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University of Washington
1.
Rohde, Jessica.
Partial Migration of Puget Sound Coho Salmon (Oncorhynchus kisutch) Individual and Population Level Patterns.
Degree: 2013, University of Washington
URL: http://hdl.handle.net/1773/24336 
► Partial migration, the behavior pattern in which a portion of a population migrates while others do not, is a widespread phenomenon with ecological and evolutionary…
(more)
▼ Partial migration, the behavior pattern in which a portion of a population migrates while others do not, is a widespread phenomenon with ecological and evolutionary consequences. Most Coho Salmon (Oncorhynchus kisutch) from streams in the Puget Sound, Washington basin rear over the continental shelf or offshore waters of the North Pacific Ocean after leaving fresh water, but some rear in the semi-estuarine waters of Puget Sound and are termed residents.The movements of residents are poorly documented and it is unclear whether they ever leave Puget Sound and move to the coast of Washington, and what factors might influence fish to adopt a resident migration pattern. To understand this migration pattern at the population level, we used coded-wire tag data to evaluate the effect of several factors on the tendency of Coho Salmon to remain resident in Puget Sound rather than migrating outside, and on catch location within Puget Sound. We found that location of origin, day of release, and year of release most strongly affected residency, with fish released later and from south Puget Sound the most likely to remain resident. These factors together indicate that environmental variation plays a strong role in resident migration pattern. Additionally, fish remaining resident were more likely to be recovered in the basin they were released from than in neighboring basins.To understand this migration pattern at the individual level, we investigated the patterns of movement by resident Coho Salmon in Puget Sound at a series of spatial scales using acoustic telemetry. Some residents were detected departing Puget Sound, though they rarely moved between the different basins of Puget Sound. Additionally there was strong evidence of movement to deep, offshore environments during day, and shallow, close to shore environments at night. Rather than a discrete behavior, we suggest that residence in Puget Sound by Coho Salmon is part of a continuum of migratory behavior patterns.
Advisors/Committee Members: Quinn, Thomas P (advisor).
Subjects/Keywords: Fisheries and aquatic sciences; fisheries
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APA (6th Edition):
Rohde, J. (2013). Partial Migration of Puget Sound Coho Salmon (Oncorhynchus kisutch) Individual and Population Level Patterns. (Thesis). University of Washington. Retrieved from http://hdl.handle.net/1773/24336
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Rohde, Jessica. “Partial Migration of Puget Sound Coho Salmon (Oncorhynchus kisutch) Individual and Population Level Patterns.” 2013. Thesis, University of Washington. Accessed February 27, 2021.
http://hdl.handle.net/1773/24336.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Rohde, Jessica. “Partial Migration of Puget Sound Coho Salmon (Oncorhynchus kisutch) Individual and Population Level Patterns.” 2013. Web. 27 Feb 2021.
Vancouver:
Rohde J. Partial Migration of Puget Sound Coho Salmon (Oncorhynchus kisutch) Individual and Population Level Patterns. [Internet] [Thesis]. University of Washington; 2013. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/1773/24336.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Rohde J. Partial Migration of Puget Sound Coho Salmon (Oncorhynchus kisutch) Individual and Population Level Patterns. [Thesis]. University of Washington; 2013. Available from: http://hdl.handle.net/1773/24336
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Washington
2.
Kasim, Kamaluddin.
Fishery Performance Indicators (FPIs) and Production Analysis: What Works Before and After the Ban of Cantrang Trawl Fishing in the Java Sea–Indonesia.
Degree: 2020, University of Washington
URL: http://hdl.handle.net/1773/45195
► The Fishery Performance Indicator (FPI) and production analysis are used to asses and evaluate the impacts of a partial ban on performance of the Cantrang…
(more)
▼ The Fishery Performance Indicator (FPI) and production analysis are used to asses and evaluate the impacts of a partial ban on performance of the Cantrang -a modified Danish seine that targets demersal species and squid- in the Java Sea. The goal of the ban was to limit ecological impacts of fishing by limiting effort. Although called a “ban”, 46% of the vessels were reissued permits to fish shortly after total prohibition. We find that there is no improvement in the ecological outcome after the implementation of the ban, as the proxy data shows declining catch per trip of almost all harvested species. The ban reduced the supply of key fish species, resulting in price increases that benefitted the fishermen, but with increased price volatility. High scores for metrics of local labor participation and involvement to the fishery, as well as the better wage of local crews, skippers, and workers compared to other similar occupations during the post-ban, indicate the ban benefited the community of the primary port. Despite the fleet reduction, employment decreases arising from the ban were much smaller, as it coincided with 30% increases in crew sizes. This was driven primarily by an increase in the portion of the fleet with onboard freezers, which require more packing and sorting labor, but facilitate longer trips. Controlling for prices, production models suggest the increase in crew size accounted for 90% of the increase in revenue, which reveal a significant revenue increased at post-ban because of the substantial effect of the crew, while the GT size and trip length contributing only 8% increase of the revenue.
Advisors/Committee Members: Anderson, Christopher M (advisor).
Subjects/Keywords:
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APA (6th Edition):
Kasim, K. (2020). Fishery Performance Indicators (FPIs) and Production Analysis: What Works Before and After the Ban of Cantrang Trawl Fishing in the Java Sea–Indonesia. (Thesis). University of Washington. Retrieved from http://hdl.handle.net/1773/45195
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Kasim, Kamaluddin. “Fishery Performance Indicators (FPIs) and Production Analysis: What Works Before and After the Ban of Cantrang Trawl Fishing in the Java Sea–Indonesia.” 2020. Thesis, University of Washington. Accessed February 27, 2021.
http://hdl.handle.net/1773/45195.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Kasim, Kamaluddin. “Fishery Performance Indicators (FPIs) and Production Analysis: What Works Before and After the Ban of Cantrang Trawl Fishing in the Java Sea–Indonesia.” 2020. Web. 27 Feb 2021.
Vancouver:
Kasim K. Fishery Performance Indicators (FPIs) and Production Analysis: What Works Before and After the Ban of Cantrang Trawl Fishing in the Java Sea–Indonesia. [Internet] [Thesis]. University of Washington; 2020. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/1773/45195.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Kasim K. Fishery Performance Indicators (FPIs) and Production Analysis: What Works Before and After the Ban of Cantrang Trawl Fishing in the Java Sea–Indonesia. [Thesis]. University of Washington; 2020. Available from: http://hdl.handle.net/1773/45195
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Washington
3.
Miller, Benjamin Lloyd.
Carbon Dynamics on Floodplains of the Yangtze and Mekong Rivers.
Degree: PhD, 2020, University of Washington
URL: http://hdl.handle.net/1773/46009
► The lateral expansion and contraction of rivers across their floodplains inextricably links aquatic and terrestrial ecosystem processes for part of each year, yet our understanding…
(more)
▼ The lateral expansion and contraction of rivers across their floodplains inextricably links
aquatic and terrestrial ecosystem processes for part of each year, yet our understanding of the ecological responses to this seasonal hydrologic forcing is distinctly incomplete. The Flood Pulse Concept (FPC) predicts how in-situ primary production and respiration respond to this forcing. Although many of its predictions remain untested, the FPC is highly-cited and continues to guide hypotheses of ecosystem studies in tropical and subtropical flood-pulse rivers. In Chapter 1 of this dissertation, I reviewed the literature published from 1989 to 2019 on tropical rivers to provide an updated narrative of how primary production and respiration change in response to the seasonal flood-pulse. The literature shows that the in-situ respiration of a combination of
aquatic and terrestrial organic carbon (C) exceeds primary production in tropical and subtropical flood-pulse rivers (i.e.,ecosystems are net heterotrophic). For the remainder of the dissertation, I propose that this net heterotrophy changes in response to flood-pulse hydrology and is sustained by both aerobic and anaerobic metabolism, contributing to the composition of dissolved C gases in water, atmospheric emissions of C gases, and the energetic base of
aquatic food webs. I further propose that such cycling of C in flood-pulse rivers is fundamentally changed by hydropower development, which alters the magnitude and timing of the seasonal flood-pulse. Net heterotrophy within inland waters sustained by terrestrial-
aquatic transfers of organic C and its subsequent, in-situ aerobic respiration constitutes one of the most significant findings by
aquatic ecologists over the past thirty years (Cole et al., 1994; del Giorgio and Peters, 1994). One of the defining features of net heterotrophy within rivers and lakes is the oversaturation of dissolved carbon dioxide (CO2) relative to atmospheric levels as a byproduct of aerobic respiration. When “plumbing” the global C cycle, Cole et al. (2007) posited a unidirectional transfer of organic C from terrestrial to
aquatic ecosystems, and assigned only three fates to this C: burial within sediments, aerobic respiration and diffusive loss of CO2 to the atmosphere, and export to the oceans. Recently, Abril and Borges (2019) proposed the bidirectional expansion and contraction of floodwaters over the terrestrial landscape as a major revision to the model presented by Cole et al. (2007). In Chapter 2, I hypothesized that the bidirectional expansion and contraction of rivers and lakes over the terrestrial landscape for months each year during the flood-pulse would create anaerobic floodplain habitat conducive to a fourth fate for organic C and additional cause of CO2 oversaturation within inland waters: methane (CH4) production and oxidation. I further hypothesized that net heterotrophy, dissolved CO2 and CH4, and their diffusive fluxes to the atmosphere would increase with water levels and floodplain inundation. I tested these…
Advisors/Committee Members: Holtgrieve, Gordon W (advisor).
Subjects/Keywords:
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APA ·
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APA (6th Edition):
Miller, B. L. (2020). Carbon Dynamics on Floodplains of the Yangtze and Mekong Rivers. (Doctoral Dissertation). University of Washington. Retrieved from http://hdl.handle.net/1773/46009
Chicago Manual of Style (16th Edition):
Miller, Benjamin Lloyd. “Carbon Dynamics on Floodplains of the Yangtze and Mekong Rivers.” 2020. Doctoral Dissertation, University of Washington. Accessed February 27, 2021.
http://hdl.handle.net/1773/46009.
MLA Handbook (7th Edition):
Miller, Benjamin Lloyd. “Carbon Dynamics on Floodplains of the Yangtze and Mekong Rivers.” 2020. Web. 27 Feb 2021.
Vancouver:
Miller BL. Carbon Dynamics on Floodplains of the Yangtze and Mekong Rivers. [Internet] [Doctoral dissertation]. University of Washington; 2020. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/1773/46009.
Council of Science Editors:
Miller BL. Carbon Dynamics on Floodplains of the Yangtze and Mekong Rivers. [Doctoral Dissertation]. University of Washington; 2020. Available from: http://hdl.handle.net/1773/46009
University of Maryland
4.
Robinson, Jason Michael.
SEA LAMPREY (PETROMYZON MARINUS) POPULATION DYNAMICS, ASSESSMENT, AND CONTROL STRATEGY EVALUATION IN THE ST. MARYS RIVER, MICHIGAN.
Degree: Marine-Estuarine-Environmental Sciences, 2013, University of Maryland
URL: http://hdl.handle.net/1903/14535
► The St. Marys River is a major producer of invasive parasitic sea lampreys (Petromyzon marinus) to Lake Huron. My dissertation seeks to inform the management…
(more)
▼ The St. Marys River is a major producer of invasive parasitic sea lampreys (Petromyzon marinus) to Lake Huron. My dissertation seeks to inform the management process for sea lamprey through a combination of statistical and simulation modeling. In Chapter 1, I developed a spatial age-structured model and applied it to the sea lamprey population in the St. Marys River. The model included a stock-recruitment function, spatial recruitment patterns, natural mortality, chemical treatment mortality, and larval metamorphosis. Recruitment was variable, and an upstream shift in recruitment location was observed over time. During 1993-2011, transformer escapement decreased by 86%. The model successfully identified areas of high larval abundance and showed that areas of low larval density contribute significantly to the population. In Chapter 2, I evaluated six methods of estimating sea lamprey density and abundance including the currently used sampling-based estimates, generalized linear and additive models, the population model from Chapter 1, and a hybrid approach. Methods were evaluated based on accuracy in matching independent validation data. The hybrid method was identified as the best method to inform sea lamprey control decisions in the St. Marys River due to its consistent performance. In Chapter 3, I used a resampling approach to estimate the effect of sampling intensity on the success of sea lamprey control and examined the economic tradeoff between assessment and control efforts. Sea lamprey control actions based on assessment outperformed those implemented with no assessment under all budget scenarios. The sampling intensity that maximized the number of larvae killed depended on the overall budget, with increased sampling intensities maximizing effectiveness under medium to large budgets. In Chapter 4, I conducted a management strategy evaluation using a stochastic simulation model to evaluate several fixed and survey-based Bayluscide-based treatment strategies for sea lamprey. The model incorporated population dynamics, sampling and assessment, and larval control actions. Treatment options with higher cost resulted in larger long-term reductions in transformer escapement, but increasing treatment effort did not result in a proportional decrease in transformer escapement. Survey-based treatment scenarios were the most desirable from both an economic and population control perspective.
Advisors/Committee Members: Wilberg, Michael J (advisor).
Subjects/Keywords: Fisheries and aquatic sciences
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APA (6th Edition):
Robinson, J. M. (2013). SEA LAMPREY (PETROMYZON MARINUS) POPULATION DYNAMICS, ASSESSMENT, AND CONTROL STRATEGY EVALUATION IN THE ST. MARYS RIVER, MICHIGAN. (Thesis). University of Maryland. Retrieved from http://hdl.handle.net/1903/14535
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Robinson, Jason Michael. “SEA LAMPREY (PETROMYZON MARINUS) POPULATION DYNAMICS, ASSESSMENT, AND CONTROL STRATEGY EVALUATION IN THE ST. MARYS RIVER, MICHIGAN.” 2013. Thesis, University of Maryland. Accessed February 27, 2021.
http://hdl.handle.net/1903/14535.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Robinson, Jason Michael. “SEA LAMPREY (PETROMYZON MARINUS) POPULATION DYNAMICS, ASSESSMENT, AND CONTROL STRATEGY EVALUATION IN THE ST. MARYS RIVER, MICHIGAN.” 2013. Web. 27 Feb 2021.
Vancouver:
Robinson JM. SEA LAMPREY (PETROMYZON MARINUS) POPULATION DYNAMICS, ASSESSMENT, AND CONTROL STRATEGY EVALUATION IN THE ST. MARYS RIVER, MICHIGAN. [Internet] [Thesis]. University of Maryland; 2013. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/1903/14535.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Robinson JM. SEA LAMPREY (PETROMYZON MARINUS) POPULATION DYNAMICS, ASSESSMENT, AND CONTROL STRATEGY EVALUATION IN THE ST. MARYS RIVER, MICHIGAN. [Thesis]. University of Maryland; 2013. Available from: http://hdl.handle.net/1903/14535
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of South Carolina
5.
Hogan, Jessica Mary.
Evaluating the Impact of Fishery-Related Claw Removal On Diet, Consumption Rate, Energetics and Reproduction In the Florida Stone Crab (Menippe Spp.).
Degree: MS, Marine Science, 2013, University of South Carolina
URL: https://scholarcommons.sc.edu/etd/1544
► Many global fisheries are overexploited and working towards the development of sustainable fishing methods. Claw based crab fisheries, such as the Florida stone crab…
(more)
▼ Many global
fisheries are overexploited and working towards the development of sustainable fishing methods. Claw based crab
fisheries, such as the Florida stone crab (Menippe mercenaria, M. adina, and hybrids) fishery, use unique fishing techniques that reduce the overall mortality of harvested organisms. For example, the Florida stone crab fishery is regulated by requiring that fisherman only harvest crab claws and requires that fishermen return the live crab to the water following harvesting. This process takes advantage of the ability of crabs to autotomize and regenerate their claws, and enables crabs to re-enter the fishery in subsequent years if they survive. Though this fishery is currently considered to be sustainable, fishery-related claw loss may negatively influence the population through multiple pathways. The objectives of this study were to demonstrate how fishery-related claw loss influences Florida stone crab diet choice, consumption over time, and energy allocation following simple dynamic energy budget theory, with the ultimate goal of determining how these factors influence the reproduction of harvested individuals. I demonstrated that one-clawed Florida stone crabs do not switch their diet to more easily managed food items, such as algae or sponge, following claw removal. However, I found that one-clawed crabs consume fewer bivalves than two-clawed crabs, and they do not improve in their ability to crack mussels over time, suggesting that decreased foraging capacity will remain until the regenerative molt. I found that one-clawed Florida stone crabs do not alter their energy storage patterns prior to the reproductive season, suggesting that the energy for both reproduction and claw removal will be derived from the same energy stores. Lastly, I found that regenerating a crusher claw has the potential to take energy away from reproduction; however, the energetic implications of decreased consumption following claw loss far outweigh the energetic costs of claw regeneration. The results of this study indicate that Florida stone crabs are likely to suffer from severe energetic constraints resulting from claw removal, which could limit growth, claw regeneration, reproduction and survival of harvested crabs.
Advisors/Committee Members: Blaine D Griffen.
Subjects/Keywords: Life Sciences; Biology; Fisheries; aquatic sciences
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APA ·
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APA (6th Edition):
Hogan, J. M. (2013). Evaluating the Impact of Fishery-Related Claw Removal On Diet, Consumption Rate, Energetics and Reproduction In the Florida Stone Crab (Menippe Spp.). (Masters Thesis). University of South Carolina. Retrieved from https://scholarcommons.sc.edu/etd/1544
Chicago Manual of Style (16th Edition):
Hogan, Jessica Mary. “Evaluating the Impact of Fishery-Related Claw Removal On Diet, Consumption Rate, Energetics and Reproduction In the Florida Stone Crab (Menippe Spp.).” 2013. Masters Thesis, University of South Carolina. Accessed February 27, 2021.
https://scholarcommons.sc.edu/etd/1544.
MLA Handbook (7th Edition):
Hogan, Jessica Mary. “Evaluating the Impact of Fishery-Related Claw Removal On Diet, Consumption Rate, Energetics and Reproduction In the Florida Stone Crab (Menippe Spp.).” 2013. Web. 27 Feb 2021.
Vancouver:
Hogan JM. Evaluating the Impact of Fishery-Related Claw Removal On Diet, Consumption Rate, Energetics and Reproduction In the Florida Stone Crab (Menippe Spp.). [Internet] [Masters thesis]. University of South Carolina; 2013. [cited 2021 Feb 27].
Available from: https://scholarcommons.sc.edu/etd/1544.
Council of Science Editors:
Hogan JM. Evaluating the Impact of Fishery-Related Claw Removal On Diet, Consumption Rate, Energetics and Reproduction In the Florida Stone Crab (Menippe Spp.). [Masters Thesis]. University of South Carolina; 2013. Available from: https://scholarcommons.sc.edu/etd/1544
University of Washington
6.
Tarpey, Carolyn.
Contemporary population genetic structure and phylogeography of pink salmon.
Degree: 2016, University of Washington
URL: http://hdl.handle.net/1773/37128
► Pink salmon Oncorhynchus gorbuscha are the most abundant Pacific salmon, ranging widely across drainages of the North Pacific Ocean and Bering Sea from Japan in…
(more)
▼ Pink salmon Oncorhynchus gorbuscha are the most abundant Pacific salmon, ranging widely across drainages of the North Pacific Ocean and Bering Sea from Japan in Asia to Washington State in North America. The species are unique in that they have an obligate two-year life cycle which leads to reproductively isolated even- and odd-year lineages. Abundance of each lineage varies by location, and relative abundance can shift from one lineage to the other through time, as has been shown in the Asian portion of the range. The existence of distinct lineages of pink salmon provides a unique opportunity to address population and evolutionary genetics questions, as the lineages can serve as replicates across the entire range of the species. For instance, population structure repeated in parallel within the lineages could help identify historical patterns of isolation due to glacial cover in the region. We used genotyping by sequencing to describe the contemporary population genetic structure of even- and odd-year lineages of pink salmon throughout their range. Our goals are twofold: to conduct a population genetic characterization of the lineages to better understand their relationship, and to describe any structure within the lineages with the intent of examining the evolution of any parallel population structure identified. We genotyped 245 individuals and incorporated genotypes from 138 previously studied individuals for 16,681 SNPs; individuals originated from seven pairs of even- and odd-year populations of pink salmon spread across their range from Japan in Asia to the Pacific Northwest of North America. It has been shown that pink salmon exhibit a complex hierarchical population structure: they possess geographic structure due to their broad species range and temporal structure due to the even- and odd-year lineages. Here, hierarchical AMOVAs reveal that a significant amount of the variation in the data was explained by differences between the lineages. The lineages show differences in the distribution of diversity with the even-year lineage populations exhibiting significantly lower observed heterozygosity than those of the odd-year lineage. Within both lineages, the pattern of population structure was consistent. The Asian and northern Alaska populations show little differentiation but differ significantly from populations in southcentral Alaska and the Pacific Northwest. We tested the partitioning of variation between Asian/northern Alaska and the southcentral Alaska/Pacific Northwest within each lineage; the proportion of variation attributed to the difference between these groups was significant in both lineages, but greater in the odd-year lineage than in the even-year. Using the contemporary population structure and known paleoecological information, we inferred patterns of shared historical refugial habitat. Our data suggest that during the last glacial maximum both lineages likely occupied a northern Beringial refugium as well as a southern North American refugium. These results highlight the…
Advisors/Committee Members: Seeb, Lisa (advisor).
Subjects/Keywords:
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APA ·
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APA (6th Edition):
Tarpey, C. (2016). Contemporary population genetic structure and phylogeography of pink salmon. (Thesis). University of Washington. Retrieved from http://hdl.handle.net/1773/37128
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Tarpey, Carolyn. “Contemporary population genetic structure and phylogeography of pink salmon.” 2016. Thesis, University of Washington. Accessed February 27, 2021.
http://hdl.handle.net/1773/37128.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Tarpey, Carolyn. “Contemporary population genetic structure and phylogeography of pink salmon.” 2016. Web. 27 Feb 2021.
Vancouver:
Tarpey C. Contemporary population genetic structure and phylogeography of pink salmon. [Internet] [Thesis]. University of Washington; 2016. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/1773/37128.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Tarpey C. Contemporary population genetic structure and phylogeography of pink salmon. [Thesis]. University of Washington; 2016. Available from: http://hdl.handle.net/1773/37128
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Michigan State University
7.
Higley, Corrine Anne.
Influence of temperature on growth and timing of emergence of four mayfly species.
Degree: 2012, Michigan State University
URL: http://etd.lib.msu.edu/islandora/object/etd:654
► Thesis M.S. Michigan State University, Fisheries and Wildlife 2012.
Individual growth rates and timing of emergence of four species of Ephemerellid mayflies were examined in…
(more)
▼ Thesis M.S. Michigan State University, Fisheries and Wildlife 2012.
Individual growth rates and timing of emergence of four species of Ephemerellid mayflies were examined in relation to temperature among six sites on the Au Sable River near Grayling, Michigan. All species showed definite reductions in specific growth rates at lower temperatures, but incremental growth in mean length was continuous until emergence. These results indicate the degree-day concept is a useful tool in relating insect growth to thermal regime at intermediate temperatures, but is less accurate at temperatures approaching upper and lower development thresholds. Mean larval size and growth rates varied unpredictably among taxa and across sites, and could not be explained by variations in temperature at different sites. Other habitat variables not estimated in this study clearly influenced patterns in growth and timing of emergence of these species.
Description based on online resource; title from PDF t.p. (ProQuest, viewed on Sept. 27, 2013)
Advisors/Committee Members: Hayes, Daniel B., Taylor, William W., Merritt, Richard W..
Subjects/Keywords: Mayflies; Temperature; Fisheries and aquatic sciences; Entomology
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APA (6th Edition):
Higley, C. A. (2012). Influence of temperature on growth and timing of emergence of four mayfly species. (Thesis). Michigan State University. Retrieved from http://etd.lib.msu.edu/islandora/object/etd:654
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Higley, Corrine Anne. “Influence of temperature on growth and timing of emergence of four mayfly species.” 2012. Thesis, Michigan State University. Accessed February 27, 2021.
http://etd.lib.msu.edu/islandora/object/etd:654.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Higley, Corrine Anne. “Influence of temperature on growth and timing of emergence of four mayfly species.” 2012. Web. 27 Feb 2021.
Vancouver:
Higley CA. Influence of temperature on growth and timing of emergence of four mayfly species. [Internet] [Thesis]. Michigan State University; 2012. [cited 2021 Feb 27].
Available from: http://etd.lib.msu.edu/islandora/object/etd:654.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Higley CA. Influence of temperature on growth and timing of emergence of four mayfly species. [Thesis]. Michigan State University; 2012. Available from: http://etd.lib.msu.edu/islandora/object/etd:654
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Washington
8.
Cline, Timothy Joseph.
Challenges and opportunities for aquatic ecosystem management with uncertain global change.
Degree: PhD, 2018, University of Washington
URL: http://hdl.handle.net/1773/40897
► Society is faced with the task of effectively managing to enable ecosystem resilience to anthropogenic stressors and future change. Ecosystems are part of complex social-ecological…
(more)
▼ Society is faced with the task of effectively managing to enable ecosystem resilience to anthropogenic stressors and future change. Ecosystems are part of complex social-ecological systems where humans impact ecosystems and anthropogenic change and natural variability feed back to impact people. Management of ecosystems also involves balancing different ecosystem services and values that people place on ecosystems. These complex challenges for the management of social-ecological systems require interdisciplinary approaches that address these challenges from multiple scales. In this dissertation, I examine patterns and processes in ecosystems and social-ecological systems that may provide opportunities for management to overcome some of the challenges for the future. In chapter one, I assess how multiple stressors impact the life cycle of a commercially important fish species and demonstrate that multiple stressors impact important life-history complexity with implications for population stability. These changes may make populations less reliable for commercial
fisheries. In the second chapter, I evaluate the interaction between two competing ecosystem services and show that common ecological processes including density-dependence and population stochasticity reduce the strength of the interaction between them and render multiple benefits from ecosystems with a relatively simple management strategy. In my third chapter, I examine how population density and stream habitat characteristics interact to influence the habitat usage of sockeye salmon on the spawning grounds, which can alter their ecological benefit to freshwater ecosystems and the effectiveness of habitat restoration. In my final chapter, I explore how human communities can exploit complexity in the natural environment to buffer against uncertainty and catastrophic shifts in social-ecological systems. This work takes an interdisciplinary approach to addressing these challenges for management. The research spans multiple scales from species to ecosystems and incorporates humans in complex social-ecological systems. Management of ecosystems is challenging due to the immense amount of complexity. However, complexity in nature can provide stability and opportunities for management to take advantage of to improve management outcomes given uncertain global change.
Advisors/Committee Members: Schindler, Daniel E (advisor).
Subjects/Keywords: climate change; complexity; ecology; fisheries; management; tradeoffs; Aquatic sciences; Fisheries
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APA (6th Edition):
Cline, T. J. (2018). Challenges and opportunities for aquatic ecosystem management with uncertain global change. (Doctoral Dissertation). University of Washington. Retrieved from http://hdl.handle.net/1773/40897
Chicago Manual of Style (16th Edition):
Cline, Timothy Joseph. “Challenges and opportunities for aquatic ecosystem management with uncertain global change.” 2018. Doctoral Dissertation, University of Washington. Accessed February 27, 2021.
http://hdl.handle.net/1773/40897.
MLA Handbook (7th Edition):
Cline, Timothy Joseph. “Challenges and opportunities for aquatic ecosystem management with uncertain global change.” 2018. Web. 27 Feb 2021.
Vancouver:
Cline TJ. Challenges and opportunities for aquatic ecosystem management with uncertain global change. [Internet] [Doctoral dissertation]. University of Washington; 2018. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/1773/40897.
Council of Science Editors:
Cline TJ. Challenges and opportunities for aquatic ecosystem management with uncertain global change. [Doctoral Dissertation]. University of Washington; 2018. Available from: http://hdl.handle.net/1773/40897
University of Washington
9.
Arnold, Rachel Joy.
Evolutionary Relationships of the Enigmatic Anglerfishes (Teleostei: Lophiiformes): Can Nuclear DNA Provide Resolution for Conflicting Morphological and Mitochondrial Phylogenies?.
Degree: PhD, 2015, University of Washington
URL: http://hdl.handle.net/1773/27481
► Anglerfishes, order Lophiiformes, are among the most spectacular fishes living today and are widely known for their modified first dorsal-fin spine that serves as a…
(more)
▼ Anglerfishes, order Lophiiformes, are among the most spectacular fishes living today and are widely known for their modified first dorsal-fin spine that serves as a luring apparatus. They comprise 351 living species placed in 73 genera, 18 families, and five suborders found world-wide from tropical near-shore habitats to the deep ocean. Previous studies using mitogenomes and morphological characters conflict, especially within the deep-sea suborder Ceratioidei, requiring that an independent line of evidence be examined to estimate the species tree. To this end, fragments from the protein coding nuclear loci ENC1, Glyt, myh6, and zic1 were analyzed from 68 species of lophiiforms representing all five suborders and 17 of the 18 families. Partitioned Bayesian and maximum likelihood analyses recovered monophyly for the order and all suborders. The concatenated nuclear genes strongly support the most basal position of the Lophiidae, supporting previous morphological and mitogenome studies. In addition, strong support for a clade comprising Chaunacoidei + Ceratioidei was also recovered, lending support to the previous mitogenome study. An unexpected relationship was recovered with regard to the Ogcocephaloidei, being recovered for the first time as basal to a clade comprising Antennarioidei + (Chaunacoidei + Ceratioidei). In addition, novel relationships were recovered within the Antennarioidei, rendering the family Antennariidae paraphyletic. While these relationships have not been recovered in previous morphological studies, some life history characters appear to lend support to these relationships. Relationships recovered within the Ceratioidei in this study conflict with both morphological and mitogenome studies and highlight the need for faster evolving nuclear loci to be analyzed to better understand these relationships. Additionally, evidence is presented to support at least three species within the Antennarias striatus complex. The results of this study are presented in a revised classification of the Lophiiformes.
Advisors/Committee Members: Pietsch, Theodore W (advisor).
Subjects/Keywords: anglerfishes; evolution; Lophiiformes; phylogenetics; systematics; Fisheries and aquatic sciences; fisheries
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APA (6th Edition):
Arnold, R. J. (2015). Evolutionary Relationships of the Enigmatic Anglerfishes (Teleostei: Lophiiformes): Can Nuclear DNA Provide Resolution for Conflicting Morphological and Mitochondrial Phylogenies?. (Doctoral Dissertation). University of Washington. Retrieved from http://hdl.handle.net/1773/27481
Chicago Manual of Style (16th Edition):
Arnold, Rachel Joy. “Evolutionary Relationships of the Enigmatic Anglerfishes (Teleostei: Lophiiformes): Can Nuclear DNA Provide Resolution for Conflicting Morphological and Mitochondrial Phylogenies?.” 2015. Doctoral Dissertation, University of Washington. Accessed February 27, 2021.
http://hdl.handle.net/1773/27481.
MLA Handbook (7th Edition):
Arnold, Rachel Joy. “Evolutionary Relationships of the Enigmatic Anglerfishes (Teleostei: Lophiiformes): Can Nuclear DNA Provide Resolution for Conflicting Morphological and Mitochondrial Phylogenies?.” 2015. Web. 27 Feb 2021.
Vancouver:
Arnold RJ. Evolutionary Relationships of the Enigmatic Anglerfishes (Teleostei: Lophiiformes): Can Nuclear DNA Provide Resolution for Conflicting Morphological and Mitochondrial Phylogenies?. [Internet] [Doctoral dissertation]. University of Washington; 2015. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/1773/27481.
Council of Science Editors:
Arnold RJ. Evolutionary Relationships of the Enigmatic Anglerfishes (Teleostei: Lophiiformes): Can Nuclear DNA Provide Resolution for Conflicting Morphological and Mitochondrial Phylogenies?. [Doctoral Dissertation]. University of Washington; 2015. Available from: http://hdl.handle.net/1773/27481
University of Washington
10.
Tillotson, Abby Elizabeth.
Temperature-induced plasticity of emergence phenotypes in Chinook salmon (Oncorhynchus tshawytscha).
Degree: 2015, University of Washington
URL: http://hdl.handle.net/1773/33172
► Dams supply services that cultivate and sustain civilization such as flood control, navigation, and electricity. Due to thermal stratification in reservoirs the water released by…
(more)
▼ Dams supply services that cultivate and sustain civilization such as flood control, navigation, and electricity. Due to thermal stratification in reservoirs the water released by dams is often a different temperature from environments further upstream on both daily and seasonal time scales. The impacts of flow regulation on temperature are important because of the influence that temperature has on development and distribution of species. Salmon are particularly vulnerable to habitat and temperature changes because their reproductive and early development life phases are spent in freshwater systems. Localized temperature regime changes caused by dams may spur local adaptation. In a common garden laboratory incubation experiment, I measured emergence timing of fry from four Spring Chinook populations originating from Northwest river systems affected by hydropower dams. Four family groups from each of four different populations were created by artificially spawning adult salmon (1 to 1 crosses) during the same week of September, 2012. Each family of eggs was exposed to four different thermal regimes from fertilization to emergence to test the following hypotheses: 1) Altered temperature regimes can cause disparity in development timing between families and across populations. 2) Reaction norms for development timing under different temperature regimes are unique depending on family and population origin. 3) The condition of fry at emergence is regulated by an interaction between genotype and thermal regime. 4) The delivery method of temperature (constant vs. variable) affects emergence phenotypes. We found that fry from warmer thermal regimes emerged earlier both in terms of calendar date and temperature units, and that warmer treatments caused fry to emerge less developed. There was also a significant effect of family on both emergence timing, and development level at emergence. The influence of daily temperature pattern was population specific, with most families from the Willamette Basin showing delayed emergence when incubated in a cold stable thermal regime. By combining measurements of physiological and behavioral traits at emergence, our research provides a better baseline for interpreting results in the context of hatchery, natural, and human-altered environments.
Advisors/Committee Members: Young, Graham (advisor).
Subjects/Keywords: Development; Emergence; Phenotype; Salmon; Temperature; Fisheries and aquatic sciences; fisheries
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APA (6th Edition):
Tillotson, A. E. (2015). Temperature-induced plasticity of emergence phenotypes in Chinook salmon (Oncorhynchus tshawytscha). (Thesis). University of Washington. Retrieved from http://hdl.handle.net/1773/33172
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Tillotson, Abby Elizabeth. “Temperature-induced plasticity of emergence phenotypes in Chinook salmon (Oncorhynchus tshawytscha).” 2015. Thesis, University of Washington. Accessed February 27, 2021.
http://hdl.handle.net/1773/33172.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Tillotson, Abby Elizabeth. “Temperature-induced plasticity of emergence phenotypes in Chinook salmon (Oncorhynchus tshawytscha).” 2015. Web. 27 Feb 2021.
Vancouver:
Tillotson AE. Temperature-induced plasticity of emergence phenotypes in Chinook salmon (Oncorhynchus tshawytscha). [Internet] [Thesis]. University of Washington; 2015. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/1773/33172.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Tillotson AE. Temperature-induced plasticity of emergence phenotypes in Chinook salmon (Oncorhynchus tshawytscha). [Thesis]. University of Washington; 2015. Available from: http://hdl.handle.net/1773/33172
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Washington
11.
Koehn, Laura Elizabeth.
Advances in Models for Assessing Interactions of Forage Fish and Their Predators and Application to Ecosystem Based Fisheries Management (EBFM).
Degree: PhD, 2019, University of Washington
URL: http://hdl.handle.net/1773/44261
► Ecosystem-based fisheries management (EBFM) involves considering tradeoffs between competing objectives in fisheries management. Forage fish world-wide are an important prey source for a wide range…
(more)
▼ Ecosystem-based
fisheries management (EBFM) involves considering tradeoffs between competing objectives in
fisheries management. Forage fish world-wide are an important prey source for a wide range of predators but also support profitable
fisheries. These two key ecosystem roles create potential tradeoffs; exemplifying a key EBFM issue. Commonly, large ecosystem models are used to explore these tradeoffs and interactions between forage fish,
fisheries, and predators. However, structural assumptions of previous models create limitations for assessing tradeoffs. In this dissertation, I advance two models of varying complexity and apply a third, for the exploration of forage fish fishery-predator interactions, and reveal insights into these interactions that previous models could not. I explore forage fish-predator interactions through a large ecosystem food-web model with high taxonomic resolution of forage fish and their predators (Chapter 1) and potential tradeoffs of
fisheries on these forage fish (Chapter 2). I also explore specific seabird-forage fish interactions through an ecological detailed seabird model (Chapter 3) and consider future avenues for EBFM implementation (Chapter 4). In the first chapter, I demonstrate that high model taxonomic resolution reveals lower ecological importance of individual forage species and lower reliance of predators on individual forage species (more generalist diets) in a large upwelling system, compared to models where species are aggregated into guilds. Though there are multiple pathways of energy flow in a system, Chapter 2 demonstrates that there are still tradeoffs to fishing forage fish, particularly large losses of non-market predators like seabirds and marine mammals. In many cases however, predator losses were only observed with increased fishing on a single forage fish species, so aggregation of forage fish species in models exaggerates tradeoffs of certain forage fish
fisheries. Based on the key tradeoffs between forage fish catch and seabird conservation, in the third chapter, I demonstrate that in order to robustly apply ecologically-complex seabird models to further explore the impacts of forage fish availability on seabirds, more empirical information is needed on relationship between prey availability across a range of seabird demographic parameters. Finally, in the fourth chapter, I demonstrate that the capacity exists to apply a structured-decision making process for implementation of EBFM that explicitly addresses fishery tradeoffs. These results demonstrate the importance of constructing models around a specific question or objective to reveal insights into ecosystems that can help direct and focus future management and research.
Advisors/Committee Members: Essington, Timothy E (advisor).
Subjects/Keywords: Ecology; Ecosystems; Fisheries; Resource management; Aquatic sciences; Fisheries
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APA ·
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Manager
APA (6th Edition):
Koehn, L. E. (2019). Advances in Models for Assessing Interactions of Forage Fish and Their Predators and Application to Ecosystem Based Fisheries Management (EBFM). (Doctoral Dissertation). University of Washington. Retrieved from http://hdl.handle.net/1773/44261
Chicago Manual of Style (16th Edition):
Koehn, Laura Elizabeth. “Advances in Models for Assessing Interactions of Forage Fish and Their Predators and Application to Ecosystem Based Fisheries Management (EBFM).” 2019. Doctoral Dissertation, University of Washington. Accessed February 27, 2021.
http://hdl.handle.net/1773/44261.
MLA Handbook (7th Edition):
Koehn, Laura Elizabeth. “Advances in Models for Assessing Interactions of Forage Fish and Their Predators and Application to Ecosystem Based Fisheries Management (EBFM).” 2019. Web. 27 Feb 2021.
Vancouver:
Koehn LE. Advances in Models for Assessing Interactions of Forage Fish and Their Predators and Application to Ecosystem Based Fisheries Management (EBFM). [Internet] [Doctoral dissertation]. University of Washington; 2019. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/1773/44261.
Council of Science Editors:
Koehn LE. Advances in Models for Assessing Interactions of Forage Fish and Their Predators and Application to Ecosystem Based Fisheries Management (EBFM). [Doctoral Dissertation]. University of Washington; 2019. Available from: http://hdl.handle.net/1773/44261
Michigan State University
12.
Stevens, Kara Jael.
Social and ecological dynamics of small-scale fisheries in the context of rapid globalization.
Degree: 2014, Michigan State University
URL: http://etd.lib.msu.edu/islandora/object/etd:2630
► Thesis Ph. D. Michigan State University. Fisheries and Wildlife 2014.
Tropical small-scale fisheries are understudied and the social and ecological feedbacks are poorly understood; yet…
(more)
▼ Thesis Ph. D. Michigan State University. Fisheries and Wildlife 2014.
Tropical small-scale fisheries are understudied and the social and ecological feedbacks are poorly understood; yet they are one of the most economically valuable systems in terms of ecosystem services, generate half of the global fish supply and employ the vast majority of the world's fishers. They are typically found in remote areas at the margins of markets, economic development and government services. However, increasing globalization and connectivity to international markets can result in profound and complex changes to the local economy, livelihoods, resources and the fundamental social norms that govern harvest practices. Social networks mediate large-scale change and shifts in social norms. Previous research has shown that networks are important in shaping institutional management of resources. Yet these studies measured structural characteristics of networks at the communal level. This dissertation builds on this foundation by examining the impact of social networks on individual behavior. Specifically, it looks at two main research questions: First, in the context of rapid globalization, what factors explain changes in fishermen's harvest and management behavior? Second, what have been the effects of market access on a remote, small-scale fishery? I conducted interviews to measure the effect of social networks on changes in three social norms in four different communities: (i) fisherman's catch and release practice, (ii) enforcement of sea tenure and (iii) seasonal use of gill nets. In addition, I conducted fisheries independent assessments of the lagoon fishery to determine changes in length-frequency, mean trophic level, and relative biomass as the fishery progressed from primarily subsistence to primarily commercial harvest over the last two decades.I found that social networks have an influence on fishermen's catch and release behavior, enforcement of sea tenure and seasonal use of gill nets. In addition to social networks, I also found that change in personal gear investment and recent harvest rates explained some of the variation in catch and release practice. Fishermen's age and food security also influenced fishermen's enforcement behavior. In assessing the impact of harvest on the fishery, I found that there were significant declines in all fishery indicators measured at the community and species level: mean trophic level, mean length and relative biomass. The economic impact of declines in fish abundance are important to note. Decline in biomass of the most economically important species, snook Centropomus undecimalis, translates to an estimated 75% decline in fishermen's income from snook over time.Markets can deliver important economic benefits to small-scale fishers of the developing world, yet rapid globalization and connectivity to markets in the presence of weak governance systems may exceed communities' ability to adapt and fail to deliver expected economic promises in the long-term. This can result in a cycle of…
Advisors/Committee Members: Kramer, Daniel, Urquhart, Gerald, Frank, Ken, Irwin, Brian.
Subjects/Keywords: Small-scale fisheries – Nicaragua; Estuarine fisheries – Nicaragua; Globalization; Estuarine fisheries; Small-scale fisheries; Conservation biology; Fisheries and aquatic sciences; Social research
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APA ·
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APA (6th Edition):
Stevens, K. J. (2014). Social and ecological dynamics of small-scale fisheries in the context of rapid globalization. (Thesis). Michigan State University. Retrieved from http://etd.lib.msu.edu/islandora/object/etd:2630
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Stevens, Kara Jael. “Social and ecological dynamics of small-scale fisheries in the context of rapid globalization.” 2014. Thesis, Michigan State University. Accessed February 27, 2021.
http://etd.lib.msu.edu/islandora/object/etd:2630.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Stevens, Kara Jael. “Social and ecological dynamics of small-scale fisheries in the context of rapid globalization.” 2014. Web. 27 Feb 2021.
Vancouver:
Stevens KJ. Social and ecological dynamics of small-scale fisheries in the context of rapid globalization. [Internet] [Thesis]. Michigan State University; 2014. [cited 2021 Feb 27].
Available from: http://etd.lib.msu.edu/islandora/object/etd:2630.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Stevens KJ. Social and ecological dynamics of small-scale fisheries in the context of rapid globalization. [Thesis]. Michigan State University; 2014. Available from: http://etd.lib.msu.edu/islandora/object/etd:2630
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Michigan State University
13.
Bals, Jason David.
The sea lamprey alarm response : field and laboratory investigations.
Degree: 2012, Michigan State University
URL: http://etd.lib.msu.edu/islandora/object/etd:37
► Thesis M.S. Michigan State University, Fisheries and Wildlife 2012.
The sea lamprey (Petromyzon marinus), a devastating invasive species within the Laurentian Great Lakes, exhibits a…
(more)
▼ Thesis M.S. Michigan State University, Fisheries and Wildlife 2012.
The sea lamprey (Petromyzon marinus), a devastating invasive species within the Laurentian Great Lakes, exhibits a spectacular alarm response to the odor emitted from dead conspecifics that may differ substantially in function from the well-characterized system in ostariophysan fishes. Here, we report the first field test and a series of laboratory experiments designed to characterize the behavioral responses of migratory-phase lampreys to a set of odors derived from conspecific and heterospecific tissues, determine whether sex or sexual maturation alters these responses, ascertain if the putative alarm substance derives from a particular region of the body, and evaluate how variation in dilution and previous exposure history influence the response. The field test clearly demonstrated that sea lampreys restrict their migration path by avoiding areas activated with conspecific alarm cues. A number of findings were consistent with prevailing predation-risk model for fishes in that dilute odors from conspecific skin elicited avoidance response, reactivity was a function of phylogenetic relatedness between species, and the response attenuated in females upon maturation but not in males. However, unlike alarm cues for other aquatic species, the sea lamprey alarm substance activates a larger space, is contained within multiple tissues, and is persistent over time (survives 96 h of decay). These features suggest a broader ecological function than the detection and avoidance of a predator. Given the strength and consistency of the response (>99% repellency at the highest concentration) these semiochemical(s) could provide a beneficial supplement to current sea lamprey management practices by redistributing the annual spawning run.
Description based on online resource; title from PDF t.p. (ProQuest, viewed on Sept. 25, 2013.
Advisors/Committee Members: Wagner, C. Michael, Miller, James, Peacor, Scott.
Subjects/Keywords: Petromyzon marinus; Aquatic ecology; Pheromones; Fishes – Effect of predation on; Fisheries and aquatic sciences
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APA (6th Edition):
Bals, J. D. (2012). The sea lamprey alarm response : field and laboratory investigations. (Thesis). Michigan State University. Retrieved from http://etd.lib.msu.edu/islandora/object/etd:37
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Bals, Jason David. “The sea lamprey alarm response : field and laboratory investigations.” 2012. Thesis, Michigan State University. Accessed February 27, 2021.
http://etd.lib.msu.edu/islandora/object/etd:37.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Bals, Jason David. “The sea lamprey alarm response : field and laboratory investigations.” 2012. Web. 27 Feb 2021.
Vancouver:
Bals JD. The sea lamprey alarm response : field and laboratory investigations. [Internet] [Thesis]. Michigan State University; 2012. [cited 2021 Feb 27].
Available from: http://etd.lib.msu.edu/islandora/object/etd:37.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Bals JD. The sea lamprey alarm response : field and laboratory investigations. [Thesis]. Michigan State University; 2012. Available from: http://etd.lib.msu.edu/islandora/object/etd:37
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
14.
Peterson, Daniel Alexander.
Local adaptation, dispersal, and gene flow in a metapopulation of sockeye salmon.
Degree: 2013, University of Washington
URL: http://hdl.handle.net/1773/22571
► Gene flow within a metapopulation depends on the reproductive success of dispersers after immigration, but few empirical studies have measured the reproductive contributions of dispersers…
(more)
▼ Gene flow within a metapopulation depends on the reproductive success of dispersers after immigration, but few empirical studies have measured the reproductive contributions of dispersers from distinct natal populations. The local adaptation frequently observed within metapopulations of anadromous salmonids could exert strong selection against immigrants with phenotypes adapted to ecologically distinct habitats. Here, we used genetic parentage analysis to directly measure the reproductive success of dispersers from multiple natal habitats relative to philopatric individuals within a group of geographically proximate but ecologically and genetically distinct subpopulations of stream- and beach-spawning sockeye salmon (Oncorhynchus nerka). Our results indicate that dispersers between stream-spawning populations and philopatric individuals experienced similar reproductive success, while immigrants from the beach habitat to the streams produced fewer returning adult offspring than either philopatric individuals or stream-to-stream dispersers. The difference in reproductive contribution between beach-to-stream dispersers and the other two dispersal categories was estimated to be one returning adult offspring per individual. Thus, the difference in reproductive success of dispersers between habitat types represents a strong barrier to gene flow between these sockeye salmon ecotypes. Experimental and observational studies of the homing and spawning behavior of hatchery-raised salmon have indicated that their search for high-quality spawning habitat can overcome their homing tendency. Nevertheless, the extent to which dispersal between populations is motivated by habitat selection versus navigational errors during the homing process is not well understood, especially in wild populations. Here we examined whether dispersing individuals exhibited more exploratory behavior than philopatric individuals within a metapopulation of wild sockeye salmon, which would suggest that dispersal may be influenced by comparisons between potential spawning areas. We tracked the daily locations of all adult salmon spawning in two proximate streams and determined the dispersal status for each individual by comparing its chosen spawning stream with that of its parents (as determined by genetic parentage reconstruction). Dispersers were often observed in their natal stream (8-11% of individuals) or at its mouth (29-58% of individuals) before spawning in the other stream, whereas philopatric individuals were rarely observed in their non-natal stream (0-2% of individuals) or at its mouth (1-7% of individuals). These results suggest either that the mechanism of dispersal encourages exploration or that individuals that explore are more likely to disperse. In either case, dispersers are exposed to multiple spawning habitats, potentially allowing annual variation in local environmental or demographic conditions to influence the patterns of gene flow within a metapopulation.
Advisors/Committee Members: Hauser, Lorenz (advisor).
Subjects/Keywords: Fisheries and aquatic sciences; fisheries
…Healthcare
Life Sciences, Piscataway, NJ, USA). To quantify genotyping error rates, 146-203…
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APA ·
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MLA ·
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CSE |
Export
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Manager
APA (6th Edition):
Peterson, D. A. (2013). Local adaptation, dispersal, and gene flow in a metapopulation of sockeye salmon. (Thesis). University of Washington. Retrieved from http://hdl.handle.net/1773/22571
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Peterson, Daniel Alexander. “Local adaptation, dispersal, and gene flow in a metapopulation of sockeye salmon.” 2013. Thesis, University of Washington. Accessed February 27, 2021.
http://hdl.handle.net/1773/22571.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Peterson, Daniel Alexander. “Local adaptation, dispersal, and gene flow in a metapopulation of sockeye salmon.” 2013. Web. 27 Feb 2021.
Vancouver:
Peterson DA. Local adaptation, dispersal, and gene flow in a metapopulation of sockeye salmon. [Internet] [Thesis]. University of Washington; 2013. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/1773/22571.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Peterson DA. Local adaptation, dispersal, and gene flow in a metapopulation of sockeye salmon. [Thesis]. University of Washington; 2013. Available from: http://hdl.handle.net/1773/22571
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Washington
15.
VERT-PRE, Katyana Aurore Angie.
Overfishing or environmental change: Establishing the frequency of changes in productivity of marine fish stocks.
Degree: 2013, University of Washington
URL: http://hdl.handle.net/1773/23491
► The relative importance of environmental conditions and stock abundance in determining the productivity of fish stocks has been a subject of an on-going debate. The…
(more)
▼ The relative importance of environmental conditions and stock abundance in determining the productivity of fish stocks has been a
subject of an on-going debate. The controversy can be formulated as four competing hypotheses: 1) productivity is driven by fishing pressure, which affects abundance, subsequent recruitment; 2) productivity is regime-driven, with periods of good and bad productivity unrelated to abundance; 3) productivity is random from year to year and unrelated to abundance and is temporally uncorrelated; and 4) both stock abundance and regimes of good and bad conditions interact to affect productivity. The goals of this study are (1) to evaluate the support for each of these hypotheses by examining the productivity of marine species using a large number of stocks, and (2) to evaluate the same hypotheses with respect to recruitment. This project uses historic data from about 230 assessments from the RAM Legacy Database. Each of the four hypotheses will be formulated as alternative models, and the support for the hypotheses evaluated using model selection via AICc and AICc weights. The specific models are (1) a biomass-dynamic model relating surplus production to stock size, (2) a regime shift model accounting for temporal shifts in productivity; (3) a model that assumes productivity to be random and (4) a biomass-dynamics model that has regime changes in productivity parameters. Then a similar analysis was performed on recruitment. I found that when considering production the Abundance Hypothesis best explains 18.3% of stocks, the Regimes Hypothesis 38.6%, the Mixed Hypothesis 30.5%, and the Random Hypothesis 12.6%. When considering recruitment, the stock-recruitment Hypothesis best explains 17% of stocks, the Regimes Hypothesis 45%, the Mixed Hypothesis 21% and the Random Hypothesis 18%. If the production of a stock is determined by periodic regimes and the assessment of the stock does not recognize the shift in regimes, then the management system with respect to sustainable yield is incorrect. I do not suggest that we should abandon the goal of maintaining fish stocks at high abundance. Rather I simply show that it is unlikely that such policies will assure high and sustained recruitment. Thus, future work should identify and evaluate management strategies that would be robust to irregular jumps in average productivity.
Advisors/Committee Members: Hilborn, Ray (advisor).
Subjects/Keywords: Environmental change; Fishing; Fish production; Productivity Regime; Recruitment; Agriculture; Fisheries and aquatic sciences; fisheries
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APA (6th Edition):
VERT-PRE, K. A. A. (2013). Overfishing or environmental change: Establishing the frequency of changes in productivity of marine fish stocks. (Thesis). University of Washington. Retrieved from http://hdl.handle.net/1773/23491
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
VERT-PRE, Katyana Aurore Angie. “Overfishing or environmental change: Establishing the frequency of changes in productivity of marine fish stocks.” 2013. Thesis, University of Washington. Accessed February 27, 2021.
http://hdl.handle.net/1773/23491.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
VERT-PRE, Katyana Aurore Angie. “Overfishing or environmental change: Establishing the frequency of changes in productivity of marine fish stocks.” 2013. Web. 27 Feb 2021.
Vancouver:
VERT-PRE KAA. Overfishing or environmental change: Establishing the frequency of changes in productivity of marine fish stocks. [Internet] [Thesis]. University of Washington; 2013. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/1773/23491.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
VERT-PRE KAA. Overfishing or environmental change: Establishing the frequency of changes in productivity of marine fish stocks. [Thesis]. University of Washington; 2013. Available from: http://hdl.handle.net/1773/23491
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
16.
Miller, Jason James.
Effect of low pH on early life stages of the decapod crustacean, Dungeness crab (Cancer magister).
Degree: 2015, University of Washington
URL: http://hdl.handle.net/1773/33170
► Dungeness crab (Cancer magister) eggs and larvae were exposed to laboratorycontrolled, low-pH seawater in an effort to assess current and predicted-future impacts of Ocean Acidification…
(more)
▼ Dungeness crab (Cancer magister) eggs and larvae were exposed to laboratorycontrolled, low-pH seawater in an effort to assess current and predicted-future impacts of Ocean Acidification (OA) on hatching success, survival and growth. Treatment levels of pH ~8.0, ~7.5 and ~7.1 represented the wide range of pH-levels relevant to current-open-ocean, currentupwelled and future-upwelled conditions associated with C. magister habitat in the northeast Pacific Ocean. For this study, pH ~8.0 represented the "control". C. magister eggs were exposed to treatment levels for 34 days. There was no effect of treatment on probability of hatching, however there was a delay in hatch-timing for eggs in pH 7.1. Newly hatched C. magister larvae were exposed to treatment levels for 45 days with 57.9%, 13.5%, and 21.1% surviving in pH 8.0, 7.5, and 7.1 respectively. Larvae in the low-pH treatments were 2.5-3 times less likely to survive than in the control. There was no effect of treatment on larval size at a particular larval stage, however, larvae in the low-pH treatments progressed through larval stages at a slower rate than the control. While some larvae survived the low-pH conditions to the end of the experiment, the lowest survivorship occurred in seawater reflective of pH-levels that can currently be experienced in estuaries and areas of upwelling. The results of this study indicate that low-pH seawater caused by OA can slow down progression through early life stages and that long-duration exposure can result in mortality.
Advisors/Committee Members: Friedman, Carolyn (advisor).
Subjects/Keywords: crustacean; decapod; Ocean acidification; pH; survival; Fisheries and aquatic sciences; Environmental science; Conservation biology; fisheries
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APA (6th Edition):
Miller, J. J. (2015). Effect of low pH on early life stages of the decapod crustacean, Dungeness crab (Cancer magister). (Thesis). University of Washington. Retrieved from http://hdl.handle.net/1773/33170
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Miller, Jason James. “Effect of low pH on early life stages of the decapod crustacean, Dungeness crab (Cancer magister).” 2015. Thesis, University of Washington. Accessed February 27, 2021.
http://hdl.handle.net/1773/33170.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Miller, Jason James. “Effect of low pH on early life stages of the decapod crustacean, Dungeness crab (Cancer magister).” 2015. Web. 27 Feb 2021.
Vancouver:
Miller JJ. Effect of low pH on early life stages of the decapod crustacean, Dungeness crab (Cancer magister). [Internet] [Thesis]. University of Washington; 2015. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/1773/33170.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Miller JJ. Effect of low pH on early life stages of the decapod crustacean, Dungeness crab (Cancer magister). [Thesis]. University of Washington; 2015. Available from: http://hdl.handle.net/1773/33170
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Washington
17.
Jasonowicz, Andrew.
Genomic signatures of natural selection and population structure in West Coast and Alaskan sablefish (Anoplopoma fimbria).
Degree: 2015, University of Washington
URL: http://hdl.handle.net/1773/33907
► Previous population genetic studies have not been able to find clear population genetic structure across the range of the sablefish (Anoplopoma fimbria) in North America.…
(more)
▼ Previous population genetic studies have not been able to find clear population genetic structure across the range of the sablefish (Anoplopoma fimbria) in North America. They have focused on using a relatively small number of genetic markers that are presumed to be neutral to the effects of natural selection. Genomic approaches enable researchers to examine variation at thousands of genetic markers throughout the genome simultaneously. This allows for the detection of markers influenced by natural selection. Many marine species have large population sizes leading to low levels of genetic drift that often cause little or no differentiation to be observed at neutral genetic markers. On the other hand, there is potential for significant adaptive variation to be present between populations even when levels of genetic differentiation at neutral markers are low. In marine fish species, studies of adaptive variation may help resolve genetic structure that is weak at neutral loci. In the present study, traditional population genetic analyses were used to examine differentiation among sablefish collected in the Bering Sea, Gulf of Alaska and off the West Coast of the United States. Individual based methods were used to investigate the possibility of cryptic population structure, and a landscape genomics approach was used to examine adaptive variation in the sablefish genome by a testing for associations between environmental conditions and SNP genotypes. Restriction site associated DNA sequencing (RAD-seq) was used to identify and genotype single nucleotide polymorphism (SNP) markers throughout the sablefish genome. Low and insignificant levels of population differentiation among survey areas were observed and the individual based methods support a single genetic cluster of sablefish across their North American range. The results are suggestive of high rates of gene flow or movement of sablefish in the northeast Pacific Ocean. The landscape genomic analyses found two SNPs to be associated with depth.
Advisors/Committee Members: Roberts, Steven (advisor).
Subjects/Keywords: genomics; natural selection; RAD seqencing; sablefish; SNP; Fisheries and aquatic sciences; Genetics; Biology; fisheries
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Export
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APA (6th Edition):
Jasonowicz, A. (2015). Genomic signatures of natural selection and population structure in West Coast and Alaskan sablefish (Anoplopoma fimbria). (Thesis). University of Washington. Retrieved from http://hdl.handle.net/1773/33907
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Jasonowicz, Andrew. “Genomic signatures of natural selection and population structure in West Coast and Alaskan sablefish (Anoplopoma fimbria).” 2015. Thesis, University of Washington. Accessed February 27, 2021.
http://hdl.handle.net/1773/33907.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Jasonowicz, Andrew. “Genomic signatures of natural selection and population structure in West Coast and Alaskan sablefish (Anoplopoma fimbria).” 2015. Web. 27 Feb 2021.
Vancouver:
Jasonowicz A. Genomic signatures of natural selection and population structure in West Coast and Alaskan sablefish (Anoplopoma fimbria). [Internet] [Thesis]. University of Washington; 2015. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/1773/33907.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Jasonowicz A. Genomic signatures of natural selection and population structure in West Coast and Alaskan sablefish (Anoplopoma fimbria). [Thesis]. University of Washington; 2015. Available from: http://hdl.handle.net/1773/33907
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Washington
18.
Saltman, Annika Nordin.
A Standardized Benchmarking Framework for RFMO Performance.
Degree: 2015, University of Washington
URL: http://hdl.handle.net/1773/34003
► Regional fisheries management organizations (RFMOs) are intergovernmental regional fishery bodies or arrangements with authority to establish binding conservation and management measures for straddling fish stocks…
(more)
▼ Regional
fisheries management organizations (RFMOs) are intergovernmental regional fishery bodies or arrangements with authority to establish binding conservation and management measures for straddling fish stocks and
fisheries on the high seas. The published literature has focused on the need for RFMOs to improve and strengthen their governance structures to promote successful management outcomes. Performance assessment has been identified as a means of achieving this objective. While some RFMOs have engaged in performance assessment, variation in the stated purpose of each assessment and in the evaluation frameworks used has led some to call for the development of a standard benchmarking framework that can be applied across all RFMOs. Notably, the utility of such a framework has been generally accepted without analysis of the potential obstacles to its creation. I explore the argument for the creation of such a standardized benchmarking framework. I find that despite expressed need for such a framework, organizational diversity across RFMOs creates barriers to development and implementation of standardized evaluations, suggesting the need for flexibility and diversity among frameworks. I conclude that obstacles to the creation of a single standard, comprehensive evaluation framework exist, and that the use of evaluation criteria appropriate for individual RFMOs may be more useful.
Advisors/Committee Members: Klinger, Terrie (advisor).
Subjects/Keywords: fisheries; framework; international; performance assessment; RFMO; Fisheries and aquatic sciences; marine affairs
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APA ·
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Export
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Manager
APA (6th Edition):
Saltman, A. N. (2015). A Standardized Benchmarking Framework for RFMO Performance. (Thesis). University of Washington. Retrieved from http://hdl.handle.net/1773/34003
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Saltman, Annika Nordin. “A Standardized Benchmarking Framework for RFMO Performance.” 2015. Thesis, University of Washington. Accessed February 27, 2021.
http://hdl.handle.net/1773/34003.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Saltman, Annika Nordin. “A Standardized Benchmarking Framework for RFMO Performance.” 2015. Web. 27 Feb 2021.
Vancouver:
Saltman AN. A Standardized Benchmarking Framework for RFMO Performance. [Internet] [Thesis]. University of Washington; 2015. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/1773/34003.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Saltman AN. A Standardized Benchmarking Framework for RFMO Performance. [Thesis]. University of Washington; 2015. Available from: http://hdl.handle.net/1773/34003
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Washington
19.
Kemp, Iris Marina.
Master of Science.
Degree: 2014, University of Washington
URL: http://hdl.handle.net/1773/25415
► This study described the distribution and feeding of juvenile salmon (Oncorhynchus spp.) and Pacific herring (Clupea pallasi) in Puget Sound to explore the potential for…
(more)
▼ This study described the distribution and feeding of juvenile salmon (Oncorhynchus spp.) and Pacific herring (Clupea pallasi) in Puget Sound to explore the potential for resource competition among these species. We used surface townets, midwater trawls, and acoustics surveys to assess distributions of fish in surface waters, among bathymetric zones, and depth strata in the water column. Seasonal and spatial variability was evident in epipelagic biomass. Occurrence of biomass generally increased progressively during the summer and shifted to deeper depths. Despite considerable variability, spatial, temporal, and dietary overlap was observed among herring and juvenile salmon, especially for Chinook and coho salmon. Crab larvae and amphipods were important prey for most salmon species and herring. Herring were present in higher abundances than salmon and had high population-level consumption demand. If food resources are limiting, there is potential for competitive interactions among salmon and herring.
Advisors/Committee Members: Beauchamp, David A (advisor).
Subjects/Keywords: competition; feeding ecology; Pacific herring; Pacific salmon; Puget Sound; Fisheries and aquatic sciences; fisheries
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APA ·
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Export
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Manager
APA (6th Edition):
Kemp, I. M. (2014). Master of Science. (Thesis). University of Washington. Retrieved from http://hdl.handle.net/1773/25415
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Kemp, Iris Marina. “Master of Science.” 2014. Thesis, University of Washington. Accessed February 27, 2021.
http://hdl.handle.net/1773/25415.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Kemp, Iris Marina. “Master of Science.” 2014. Web. 27 Feb 2021.
Vancouver:
Kemp IM. Master of Science. [Internet] [Thesis]. University of Washington; 2014. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/1773/25415.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Kemp IM. Master of Science. [Thesis]. University of Washington; 2014. Available from: http://hdl.handle.net/1773/25415
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Washington
20.
Sosik, Elizabeth Anne.
Isotopic evidence of microbial pathways in macroalgal detritus-based coastal food webs.
Degree: 2013, University of Washington
URL: http://hdl.handle.net/1773/22565
► Deep subtidal coastal food webs are increasingly a focus of interest among coastal researchers, largely due to the reliance of these systems on subsidies of…
(more)
▼ Deep subtidal coastal food webs are increasingly a focus of interest among coastal researchers, largely due to the reliance of these systems on subsidies of organic detritus donated from allochthonous sources. To better understand the dynamics of these food webs, researchers have frequently employed multiple stable isotope (MSI) analysis to gain insights on the relative importance and origins of various detritus sources. However, the role of microbial decomposition in these detritus-based food webs has been poorly quantified and frequently overlooked in MSI food web mixing models. In this study, I explicitly examine the ecological and MSI methodological effects of microbial decomposition of algal detritus. This study provides evidence that microbial decomposition of detritus may have cascading trophic effects. The results also suggest that microbial biofilms may act as a distinct trophic level, which can introduce a significant amount of error to MSI mixing models if not accounted for.
Advisors/Committee Members: Simenstad, Charles (advisor).
Subjects/Keywords: detritus; Food web; macroalgae; microbe; microbial; Stable Isotopes; Fisheries and aquatic sciences; Ecology; fisheries
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APA ·
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Export
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Manager
APA (6th Edition):
Sosik, E. A. (2013). Isotopic evidence of microbial pathways in macroalgal detritus-based coastal food webs. (Thesis). University of Washington. Retrieved from http://hdl.handle.net/1773/22565
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Sosik, Elizabeth Anne. “Isotopic evidence of microbial pathways in macroalgal detritus-based coastal food webs.” 2013. Thesis, University of Washington. Accessed February 27, 2021.
http://hdl.handle.net/1773/22565.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Sosik, Elizabeth Anne. “Isotopic evidence of microbial pathways in macroalgal detritus-based coastal food webs.” 2013. Web. 27 Feb 2021.
Vancouver:
Sosik EA. Isotopic evidence of microbial pathways in macroalgal detritus-based coastal food webs. [Internet] [Thesis]. University of Washington; 2013. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/1773/22565.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Sosik EA. Isotopic evidence of microbial pathways in macroalgal detritus-based coastal food webs. [Thesis]. University of Washington; 2013. Available from: http://hdl.handle.net/1773/22565
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Washington
21.
Howe, Emily Russell.
Detrital shadows: Evaluating landscape and species effects on detritus-based food web connectivity in Pacific Northwest estuaries.
Degree: PhD, 2013, University of Washington
URL: http://hdl.handle.net/1773/22569
► University of Washington Abstract Detrital shadows: evaluating landscape and species effects on detritus-based estuarine food web connectivity in Pacific Northwest estuaries Emily Russell Howe Chairperson…
(more)
▼ University of Washington Abstract Detrital shadows: evaluating landscape and species effects on detritus-based estuarine food web connectivity in Pacific Northwest estuaries Emily Russell Howe Chairperson of the Supervisory Committee: Charles A. Simenstad School of
Aquatic and Fishery
Sciences Estuaries are inherently open systems, linking together terrestrial,
aquatic, and marine ecosystems. With fluid, permeable transitions (ecotones) marking the boundaries between these ecosystems, estuaries subsidize coastal food web productivity through the mediation of nutrient, material, and trophic energy flux across ecosystem boundaries. Mechanisms governing the strength and scale of estuarine detritus-based food web connectivity, however, are poorly understood. Early estuarine descriptions suggest that extensive mixing and large-scale transport of organic matter occurs within estuaries, while recent evidence in estuarine detritus-based food webs has shown strong spatial gradients in the sources of organic matter assimilated by consumers across a diversity of spatial scales. This suggests food webs are spatially compartmentalized in some estuaries, but strongly connected in others possibly varying as a function of physical forces that transport organic matter across space, such as tidal action and fluvial discharge. Given the extensive structural and hydrological alterations of the coastal zone over the past century, research describing the mechanisms and scale of food web subsidies is necessary if we are to provide guidance for the conservation and restoration of estuaries and estuarine functions. In this dissertation, I describe the role of fluvial and tidal hydrodynamics, landscape context, consumer feeding mode, and consumer life histories in shaping the scale of food web connectivity in Pacific Northwest estuaries with implications for conservation and restoration strategies. Specifically, I examine detritus-based food webs using multiple stable isotopes in combination with a Bayesian stable isotope mixing model to trace food web connections among organic matter (OM) sources and estuarine consumers. Chapter 1 identifies several factors influencing the degree of food web connectivity in Pacific Northwest estuaries. Both fluvial discharge and consumer feeding mode strongly influenced the strength and spatial scale of food web linkages observed in the five estuaries examined. To a lesser degree, seasonal shifts in fluvial discharge, and other estuary-specific landscape characteristics, such as marsh area or particle transport speed, can also influence the lengths and strengths of food web linkages across space and time, often accounting for unexpected patterns in food web connectivity. Chapter 2 assesses whether passive (hydrologic) and active (organism behavior) processes are the primary mechanism by which trophic energy flows across estuarine ecotones. I specifically compared passive OM transfer by estuarine circulation to the active trophic relay of OM via nekton movement by comparing isotopic and diet…
Advisors/Committee Members: Simenstad, Charles A (advisor).
Subjects/Keywords: connectivity; detritus; estuary; food web; landscape ecology; stable isotopes; Ecology; Fisheries and aquatic sciences; fisheries
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APA ·
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MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Howe, E. R. (2013). Detrital shadows: Evaluating landscape and species effects on detritus-based food web connectivity in Pacific Northwest estuaries. (Doctoral Dissertation). University of Washington. Retrieved from http://hdl.handle.net/1773/22569
Chicago Manual of Style (16th Edition):
Howe, Emily Russell. “Detrital shadows: Evaluating landscape and species effects on detritus-based food web connectivity in Pacific Northwest estuaries.” 2013. Doctoral Dissertation, University of Washington. Accessed February 27, 2021.
http://hdl.handle.net/1773/22569.
MLA Handbook (7th Edition):
Howe, Emily Russell. “Detrital shadows: Evaluating landscape and species effects on detritus-based food web connectivity in Pacific Northwest estuaries.” 2013. Web. 27 Feb 2021.
Vancouver:
Howe ER. Detrital shadows: Evaluating landscape and species effects on detritus-based food web connectivity in Pacific Northwest estuaries. [Internet] [Doctoral dissertation]. University of Washington; 2013. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/1773/22569.
Council of Science Editors:
Howe ER. Detrital shadows: Evaluating landscape and species effects on detritus-based food web connectivity in Pacific Northwest estuaries. [Doctoral Dissertation]. University of Washington; 2013. Available from: http://hdl.handle.net/1773/22569
University of Maryland
22.
Sylvia, Andrea Lynn.
EFFECTS OF ASSESSMENT FREQUENCY AND DATA-MANAGEMENT LAG ON FISHERY MANAGMEMENT PERFORMANCE: STRATEGIES FOR IMPROVEMENT.
Degree: Marine-Estuarine-Environmental Sciences, 2015, University of Maryland
URL: http://hdl.handle.net/1903/16694
► Some challenges of using stock assessments in management decisions are data availability and the allocation of resources to conduct stock assessments in a frequent and…
(more)
▼ Some challenges of using stock assessments in management decisions are data availability and the allocation of resources to conduct stock assessments in a frequent and timely manner. We conducted a simulation evaluation that included the population dynamics, stock assessment, and management. Our objectives were to 1) determine effects of assessment interval and data-management lag and 2) test methods to reduce data lag by using partial data in the last year of the assessment. We found that increasing assessment interval and data-management lag caused a decrease in average catch and biomass across scenarios, with data-management lag having a larger effect compared to assessment interval. To reduce the effects of data-management lag, lag reduction methods that included some information about the age-composition of the catch and survey performed about as well as not having lag. Stock assessment interval, data-management lag and lag reduction methods should be considered when designing fishery management plans.
Advisors/Committee Members: Wilberg, Michael J (advisor).
Subjects/Keywords: Fisheries and aquatic sciences; Environmental studies; Data lag; Fisheries; Lag reduction methods; Stock assessmnet interval
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APA (6th Edition):
Sylvia, A. L. (2015). EFFECTS OF ASSESSMENT FREQUENCY AND DATA-MANAGEMENT LAG ON FISHERY MANAGMEMENT PERFORMANCE: STRATEGIES FOR IMPROVEMENT. (Thesis). University of Maryland. Retrieved from http://hdl.handle.net/1903/16694
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Sylvia, Andrea Lynn. “EFFECTS OF ASSESSMENT FREQUENCY AND DATA-MANAGEMENT LAG ON FISHERY MANAGMEMENT PERFORMANCE: STRATEGIES FOR IMPROVEMENT.” 2015. Thesis, University of Maryland. Accessed February 27, 2021.
http://hdl.handle.net/1903/16694.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Sylvia, Andrea Lynn. “EFFECTS OF ASSESSMENT FREQUENCY AND DATA-MANAGEMENT LAG ON FISHERY MANAGMEMENT PERFORMANCE: STRATEGIES FOR IMPROVEMENT.” 2015. Web. 27 Feb 2021.
Vancouver:
Sylvia AL. EFFECTS OF ASSESSMENT FREQUENCY AND DATA-MANAGEMENT LAG ON FISHERY MANAGMEMENT PERFORMANCE: STRATEGIES FOR IMPROVEMENT. [Internet] [Thesis]. University of Maryland; 2015. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/1903/16694.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Sylvia AL. EFFECTS OF ASSESSMENT FREQUENCY AND DATA-MANAGEMENT LAG ON FISHERY MANAGMEMENT PERFORMANCE: STRATEGIES FOR IMPROVEMENT. [Thesis]. University of Maryland; 2015. Available from: http://hdl.handle.net/1903/16694
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
York University
23.
Zuiden, Thomas Van.
Walleye Out of the Frying Pan and into the Fire: How Will Climate Change Influence Ontario Walleye (Sander Vitreus) and Small Mouth Bass (Micropterus Dolomien) Populations? Do Small Mouth Bass Invasions Negatively Influence Walleye Abundance?.
Degree: MSc -MS, Biology, 2016, York University
URL: http://hdl.handle.net/10315/32101
► Climate change will impact freshwater fish communities in Ontario. Warmwater species are expanding their ranges northward while cool and coldwater species are expected to shift…
(more)
▼ Climate change will impact freshwater fish communities in Ontario. Warmwater species are expanding their ranges northward while cool and coldwater species are expected to shift or decline under the current rates of warming. Our first objective was to examine how a warmwater predator, smallmouth bass (Micropterus dolomieu) and a coolwater predator, walleye (Sander vitreus), will respond to climate change. Our second objective was to determine if smallmouth bass expansions negatively influence Ontario walleye abundances. Data was provided by the Ontario Ministry of Natural Resources, Intergovernmental Panel on Climate Change, and Climatic Research Unit. We projected that smallmouth bass will undergo range expansions throughout Ontario while walleye will become extirpated in their southern ranges and shift into northern waters. We also observed that there were fewer walleye at the landscape scale when they share lakes with smallmouth bass. These findings underscore the importance of proactive
fisheries management and curbing climate change.
Advisors/Committee Members: Sharma, Sapna (advisor).
Subjects/Keywords: Fisheries and aquatic sciences; Climate change; Walleye; Smallmouth bass; Cisco; Fisheries; Competition; Biotic interactions; Lakes
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APA (6th Edition):
Zuiden, T. V. (2016). Walleye Out of the Frying Pan and into the Fire: How Will Climate Change Influence Ontario Walleye (Sander Vitreus) and Small Mouth Bass (Micropterus Dolomien) Populations? Do Small Mouth Bass Invasions Negatively Influence Walleye Abundance?. (Masters Thesis). York University. Retrieved from http://hdl.handle.net/10315/32101
Chicago Manual of Style (16th Edition):
Zuiden, Thomas Van. “Walleye Out of the Frying Pan and into the Fire: How Will Climate Change Influence Ontario Walleye (Sander Vitreus) and Small Mouth Bass (Micropterus Dolomien) Populations? Do Small Mouth Bass Invasions Negatively Influence Walleye Abundance?.” 2016. Masters Thesis, York University. Accessed February 27, 2021.
http://hdl.handle.net/10315/32101.
MLA Handbook (7th Edition):
Zuiden, Thomas Van. “Walleye Out of the Frying Pan and into the Fire: How Will Climate Change Influence Ontario Walleye (Sander Vitreus) and Small Mouth Bass (Micropterus Dolomien) Populations? Do Small Mouth Bass Invasions Negatively Influence Walleye Abundance?.” 2016. Web. 27 Feb 2021.
Vancouver:
Zuiden TV. Walleye Out of the Frying Pan and into the Fire: How Will Climate Change Influence Ontario Walleye (Sander Vitreus) and Small Mouth Bass (Micropterus Dolomien) Populations? Do Small Mouth Bass Invasions Negatively Influence Walleye Abundance?. [Internet] [Masters thesis]. York University; 2016. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/10315/32101.
Council of Science Editors:
Zuiden TV. Walleye Out of the Frying Pan and into the Fire: How Will Climate Change Influence Ontario Walleye (Sander Vitreus) and Small Mouth Bass (Micropterus Dolomien) Populations? Do Small Mouth Bass Invasions Negatively Influence Walleye Abundance?. [Masters Thesis]. York University; 2016. Available from: http://hdl.handle.net/10315/32101
University of Washington
24.
Austin, Catherine S.
Salmonid life history, phenology, and distribution within a large river basin.
Degree: PhD, 2020, University of Washington
URL: http://hdl.handle.net/1773/46011
► Where fishes are found, and in what temporal patterns and under which physical conditions, are basic questions of biology and management. Salmonid species occupy distinct…
(more)
▼ Where fishes are found, and in what temporal patterns and under which physical conditions, are basic questions of biology and management. Salmonid species occupy distinct habitats across their life stages, usually reproduce only once, and are
subject to intense anthropogenic pressures. Patterns of occupancy, life history, and phenology vary among and within species, which can be usefully explored at the watershed scale.
Advisors/Committee Members: Quinn, Thomas P (advisor).
Subjects/Keywords: distribution; life history; migration; salmon; spawning; temperature; Aquatic sciences; Ecology; Fisheries
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APA (6th Edition):
Austin, C. S. (2020). Salmonid life history, phenology, and distribution within a large river basin. (Doctoral Dissertation). University of Washington. Retrieved from http://hdl.handle.net/1773/46011
Chicago Manual of Style (16th Edition):
Austin, Catherine S. “Salmonid life history, phenology, and distribution within a large river basin.” 2020. Doctoral Dissertation, University of Washington. Accessed February 27, 2021.
http://hdl.handle.net/1773/46011.
MLA Handbook (7th Edition):
Austin, Catherine S. “Salmonid life history, phenology, and distribution within a large river basin.” 2020. Web. 27 Feb 2021.
Vancouver:
Austin CS. Salmonid life history, phenology, and distribution within a large river basin. [Internet] [Doctoral dissertation]. University of Washington; 2020. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/1773/46011.
Council of Science Editors:
Austin CS. Salmonid life history, phenology, and distribution within a large river basin. [Doctoral Dissertation]. University of Washington; 2020. Available from: http://hdl.handle.net/1773/46011
University of Washington
25.
Marston, Gary Wayne.
Do freshwater growth opportunities and migration barriers limit recovery of imperiled anadromous Oncorhynchus mykiss populations?.
Degree: 2017, University of Washington
URL: http://hdl.handle.net/1773/40153
► Steelhead (Oncorhynchus mykiss) populations in the Puget Sound Distinct Population Segment are far below their historic abundance and are currently listed as Threatened under the…
(more)
▼ Steelhead (Oncorhynchus mykiss) populations in the Puget Sound Distinct Population Segment are far below their historic abundance and are currently listed as Threatened under the Endangered Species Act. Despite the declines in steelhead abundance, resident O. mykiss populations appear to be relatively abundant and little is known about how resident O. mykiss above anadromous barriers interact with steelhead downstream. This study evaluated the dispersal and gene flow of above-barrier Oncorhynchus mykiss in the Duckabush and Hamma Hamma Rivers, Washington into below-barrier reaches that were accessible to anadromous salmonids. As well as the abundance, sex ratio and annual survival rate of O. mykiss above and below the barriers, and their influence on gene flow. We also evaluated the annual and summer growth potential of Oncorhynchus mykiss at various life stages (age 1-2, age 2-3 and age 3-4) above and below anadromous barriers in rivers to determine whether growth was limited by environmental conditions within the watershed, and if so, whether the greatest influence over growth was the availability of food or the thermal regime. Although a three year mark-recapture study did not detect any dispersal from the above the barrier populations into the below-barrier populations, microsatellite DNA analysis detected gene flow from the above-barrier populations into the below barrier populations. Gene flow was more pronounced in the Duckabush River, where 90% of the below-barrier fish were assigned to the above-barrier population. The Hamma Hamma River populations were more distinct, with 41% of the below-barrier population assigning to the above-barrier population. Abundance was estimated for O. mykiss ≥130 mm FL in the Duckabush River, with 150 trout per km in the lower below-barrier reach, 907 per km in the middle reach below the barrier and 1,165 per km above the barrier. Catch per unit effort in the Duckabush River above the barrier was 5.4 fish per angler hour compared to 2.0 in the Hamma Hamma River above the barrier, suggesting much lower relative abundance in the Hamma Hamma River. These results indicate that the gene flow from the above-barrier populations into the below-barrier population is strongly tied to abundance. Annual survival rates were low ranging from 5.7% to 21.4%, with 2013-2014 generally having better survival than 2014-2015. Survival declined with age in the middle (below-barrier) and above-barrier reaches, but improved with age in the lower reaches. Bioenergetic modeling was used with empirical data on growth, diet, and thermal experience to estimate the feeding rate, growth trajectory and the amount of food required to attain the growth observed between life stages in the, middle and lower reaches below the barrier and above the barrier in both watersheds. Model outputs indicated that consumption rates were low throughout the watersheds, ranging from 20% (age-2) to 32% (age-4) of their maximum consumption rate (%Cmax) annually. Food was insufficient to support adequate growth for age-2…
Advisors/Committee Members: Beauchamp, David A (advisor), Quinn, Thomas P (advisor).
Subjects/Keywords: Barrier Migration; Bioenergetics; Feeding; Gene flow; Steelhead; Survival; Aquatic sciences; Fisheries
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APA (6th Edition):
Marston, G. W. (2017). Do freshwater growth opportunities and migration barriers limit recovery of imperiled anadromous Oncorhynchus mykiss populations?. (Thesis). University of Washington. Retrieved from http://hdl.handle.net/1773/40153
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Marston, Gary Wayne. “Do freshwater growth opportunities and migration barriers limit recovery of imperiled anadromous Oncorhynchus mykiss populations?.” 2017. Thesis, University of Washington. Accessed February 27, 2021.
http://hdl.handle.net/1773/40153.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Marston, Gary Wayne. “Do freshwater growth opportunities and migration barriers limit recovery of imperiled anadromous Oncorhynchus mykiss populations?.” 2017. Web. 27 Feb 2021.
Vancouver:
Marston GW. Do freshwater growth opportunities and migration barriers limit recovery of imperiled anadromous Oncorhynchus mykiss populations?. [Internet] [Thesis]. University of Washington; 2017. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/1773/40153.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Marston GW. Do freshwater growth opportunities and migration barriers limit recovery of imperiled anadromous Oncorhynchus mykiss populations?. [Thesis]. University of Washington; 2017. Available from: http://hdl.handle.net/1773/40153
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Washington
26.
Drinan, Daniel.
Genomic and Fitness Consequences of Hybridization between Cutthroat and Rainbow Trout.
Degree: PhD, 2015, University of Washington
URL: http://hdl.handle.net/1773/33916
► Hybridization is an important and common evolutionary process that can contribute to diversification, adaptation, and speciation. When species hybridize, divergent genomes are combined through recombination…
(more)
▼ Hybridization is an important and common evolutionary process that can contribute to diversification, adaptation, and speciation. When species hybridize, divergent genomes are combined through recombination and may result in phenotypic changes. Such phenotypic changes may be the result of differences in chromosomal structure or adaptive divergence between the parental species and may ultimately affect fitness. Understanding how phenotypes change following hybridization, as well as the genetic mechanisms responsible for changes is critical for understanding divergent selection, speciation, and identifying populations that may be at risk from hybridization. Here, the effect of hybridization between cutthroat (Oncorhynchus clarkii) and rainbow trout (O. mykiss) on fitness was investigated using three techniques. In the first chapter, fitness influencing traits were compared among individuals at various hybridization levels. In the second chapter, genomic changes that could affect fitness were identified in the hybrid relative to rainbow trout. And, in the third chapter, correlations between reproductive success and hybridization were investigated in a wild population, as well as the genomic and ecological mechanisms responsible for those changes. The first chapter of this dissertation aimed to identify how traits potentially involved in fitness (embryonic survival, ova size, ova energy concentration, sperm motility, burst swimming performance, juvenile survival, and juvenile growth) changed with hybridization between cutthroat and rainbow trout and whether those changes could explain previously observed reductions in reproductive success of individuals with increased rainbow trout ancestry. Using progeny from wild caught fish, differences in phenotypes based on hybridization were observed for embryonic survival, ova energy concentration, juvenile weight, and burst swimming based on ancestry. However, the correlations differed from previously observed patterns of reproductive success and likely do not explain declines in reproductive success associated with hybridization. The second chapter of this dissertation aimed to identify how hybridization affects the genome by identifying genomic regions with changes in recombination rates in the hybrid relative to rainbow trout as well as genomic areas with excess species-specific ancestry in the hybrid. Previous studies of hybridization have observed recombination suppression in genomic regions where structural differences, such as inversions or karyotype differences, exist between parental species. Such regions may retain groups of adaptive alleles. Additionally, adaptive divergence between the parental species may result in alleles that are preferentially selected in the hybrid progeny. Identification of regions with suppressed recombination or excess species-specific ancestry would provide insight into markers that may be important to fitness and that have differentially evolved in each of the parental species. In total, eight and seven chromosomes were identified to have…
Advisors/Committee Members: Naish, Kerry A (advisor).
Subjects/Keywords: conservation; cutthroat; genetics; hybridization; rainbow; Genetics; Conservation biology; Aquatic sciences; fisheries
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APA (6th Edition):
Drinan, D. (2015). Genomic and Fitness Consequences of Hybridization between Cutthroat and Rainbow Trout. (Doctoral Dissertation). University of Washington. Retrieved from http://hdl.handle.net/1773/33916
Chicago Manual of Style (16th Edition):
Drinan, Daniel. “Genomic and Fitness Consequences of Hybridization between Cutthroat and Rainbow Trout.” 2015. Doctoral Dissertation, University of Washington. Accessed February 27, 2021.
http://hdl.handle.net/1773/33916.
MLA Handbook (7th Edition):
Drinan, Daniel. “Genomic and Fitness Consequences of Hybridization between Cutthroat and Rainbow Trout.” 2015. Web. 27 Feb 2021.
Vancouver:
Drinan D. Genomic and Fitness Consequences of Hybridization between Cutthroat and Rainbow Trout. [Internet] [Doctoral dissertation]. University of Washington; 2015. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/1773/33916.
Council of Science Editors:
Drinan D. Genomic and Fitness Consequences of Hybridization between Cutthroat and Rainbow Trout. [Doctoral Dissertation]. University of Washington; 2015. Available from: http://hdl.handle.net/1773/33916
University of Washington
27.
Matsubu, William Carson.
Tradeoffs of juvenile steelhead (Oncorhynchus mykiss) rearing in an intermittently closed estuary, northern California USA.
Degree: PhD, 2019, University of Washington
URL: http://hdl.handle.net/1773/44259
► Estuarine environments provide an essential habitat to many aquatic animals and, in some settings, can be susceptible to drastic environmental transformations caused by deviations in…
(more)
▼ Estuarine environments provide an essential habitat to many
aquatic animals and, in some settings, can be susceptible to drastic environmental transformations caused by deviations in connectivity with the ocean. In these intermittently closed estuaries (ICEs), the presence or absence of a barrier beach, naturally controlled by wave action and river flow, determines the mouth state (closed or open). Depending on the frequency and duration of closures and reopenings, ICEs can create a conundrum for inhabitants, especially diadromous fish that must transit between marine and freshwater habitats to reproduce. Changes in connectivity to the ocean not only obstructs migration between the ocean and the river but can also cause deadly conditions, especially for juvenile pacific salmonids (Oncorhynchus spp.) that have a narrow range of physiological tolerances for the abiotic variables susceptible to large fluctuations in ICEs. Despite these hurdles, ICEs constitute essential habitats for threatened populations of steelhead (Oncorhynchus mykiss). This dissertation utilizes a threatened population of juvenile steelhead in the Russian River estuary, northern California, USA as a case study to examine an array of relevant topics about the efficacy of a juvenile anadromous fish occupying an ICE. The intersection of a threatened fish with a plastic and complex life history within an understudied system provides many challenges as well as opportunities. In addition to a brief introduction (Chapter 1) and conclusion (Chapter 6), the main chapters of this dissertation (Chapters 2-5) will address knowledge gaps specific to juvenile steelhead in the Russian River estuary. The second chapter addressed uncertainties regarding what abiotic conditions juvenile steelhead are exposed to and how steelhead may avoid physiologically stressful conditions. Specifically, we answered the following questions: (1) “What are the WQ habitats used by juvenile steelhead during open and closed conditions in an ICE?” and (2) “What behavioural change is evidenced between open and closed conditions that might alter the juvenile steelhead’s risk of exposure to stressful WQ?” To answer these questions, we combined thermal sensor encoded acoustic telemetry and coincidental WQ sampling. Chapter two determined that, under open conditions, juvenile steelhead experienced primarily brackish and saline water in the lower and middle reaches and warm freshwater in the upper reach, whereas under closed conditions, they moved greater distances and were found to be aggregating near cool water refugia not used during open mouth conditions. These findings shed light on the abiotic conditions juvenile steelhead are exposed to and emphasize the importance of tributary hydrogeomorphic processes and groundwater linkages in subwatersheds that are sources of cool water refugia in ICEs. The purpose of the third chapter was to evaluate the vertical response of juvenile steelhead to the physiochemical conditions (i.e., temperature, DO, salinity) in the Russian River estuary. This…
Advisors/Committee Members: Simenstad, Charles A (advisor).
Subjects/Keywords: Estuaries; Intermittently Closed Estuary; Steelhead; Aquatic sciences; Ecology; Wildlife conservation; Fisheries
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APA (6th Edition):
Matsubu, W. C. (2019). Tradeoffs of juvenile steelhead (Oncorhynchus mykiss) rearing in an intermittently closed estuary, northern California USA. (Doctoral Dissertation). University of Washington. Retrieved from http://hdl.handle.net/1773/44259
Chicago Manual of Style (16th Edition):
Matsubu, William Carson. “Tradeoffs of juvenile steelhead (Oncorhynchus mykiss) rearing in an intermittently closed estuary, northern California USA.” 2019. Doctoral Dissertation, University of Washington. Accessed February 27, 2021.
http://hdl.handle.net/1773/44259.
MLA Handbook (7th Edition):
Matsubu, William Carson. “Tradeoffs of juvenile steelhead (Oncorhynchus mykiss) rearing in an intermittently closed estuary, northern California USA.” 2019. Web. 27 Feb 2021.
Vancouver:
Matsubu WC. Tradeoffs of juvenile steelhead (Oncorhynchus mykiss) rearing in an intermittently closed estuary, northern California USA. [Internet] [Doctoral dissertation]. University of Washington; 2019. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/1773/44259.
Council of Science Editors:
Matsubu WC. Tradeoffs of juvenile steelhead (Oncorhynchus mykiss) rearing in an intermittently closed estuary, northern California USA. [Doctoral Dissertation]. University of Washington; 2019. Available from: http://hdl.handle.net/1773/44259
University of Washington
28.
Gamble, Madilyn Marisa.
Size-selective mortality and environmental factors affecting early marine growth during early marine life stages of sub-yearling Chinook salmon in Puget Sound, Washington.
Degree: 2016, University of Washington
URL: http://hdl.handle.net/1773/37129
► Body size, mediated through biotic and abiotic factors affecting growth, is fundamental in determining survival as larger animals are usually less vulnerable to predation, starvation,…
(more)
▼ Body size, mediated through biotic and abiotic factors affecting growth, is fundamental in determining survival as larger animals are usually less vulnerable to predation, starvation, and extreme environmental conditions (Peterson & Wroblewski 1984; Sogard 1997). Size-selective mortality is a prevalent force regulating marine survival for many anadromous salmonid species, including ESA-listed Chinook salmon (Oncorhynchus tshawytscha) in Puget Sound, WA. The “critical size – critical period” hypothesis suggests that marine survival of anadromous Pacific Salmon (Oncorhynchus spp.) is controlled by two size-selective survival bottlenecks – one during the first marine summer and another during the first marine winter (Beamish and Mahnken 2001). Previous research has indicated a strong positive relationship between the size of juvenile ESA-listed Chinook salmon (O. tshawytscha) in Puget Sound and their survival to adulthood, indicating that early marine growth drives survival (Duffy 2009). Before investigating the drivers of early marine growth, however, it is imperative to understand whether size-selective mortality occurs prior to July in Puget Sound. If so, we may be able to augment marine survival by directing conservation and restoration efforts toward the habitats or regions of Puget Sound where size-selective mortality occurs. Additionally, we must account for any size-selective mortality in estimating early marine growth, as observed weight in July would reflect an artificially inflated “apparent” growth if smaller individuals were experiencing disproportionately high mortality. In this study, we repeatedly sampled nine stocks of both wild and hatchery-origin sub-yearling Chinook salmon during their outmigration into and rearing in Puget Sound. We used scale morphometrics to determine if size-selective mortality is affecting sub-yearling Chinook salmon during their first marine summer rearing in Puget Sound, and if so, where and when that size-selective mortality occurs. We found no evidence of size-selective mortality occurring between habitats or between sampling periods within habitats, suggesting that weight of juvenile Chinook as measured in July is representative of early marine growth and that size-selective mortality occurs later in the summer or outside Puget Sound during the first marine winter. We then focused on understanding differences in growth rates across time, among habitats, and among stocks of juvenile Chinook salmon, and used bioenergetic models to determine the relative influence of prey quality, prey availability, and temperature on early marine growth rates We found that sub-yearling Chinook were larger and grew faster in offshore than in nearshore habitats, and that this difference in growth rate was likely due to differences in prey availability and may have been exacerbated by higher nearshore temperatures. The results of this study can be used to direct restoration and conservation efforts aimed at supporting early marine growth of juvenile Chinook in Puget Sound, and can augment our…
Advisors/Committee Members: Beauchamp, David A (advisor).
Subjects/Keywords: Chinook salmon; early marine growth; size-selective mortality; Aquatic sciences; fisheries
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APA (6th Edition):
Gamble, M. M. (2016). Size-selective mortality and environmental factors affecting early marine growth during early marine life stages of sub-yearling Chinook salmon in Puget Sound, Washington. (Thesis). University of Washington. Retrieved from http://hdl.handle.net/1773/37129
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Gamble, Madilyn Marisa. “Size-selective mortality and environmental factors affecting early marine growth during early marine life stages of sub-yearling Chinook salmon in Puget Sound, Washington.” 2016. Thesis, University of Washington. Accessed February 27, 2021.
http://hdl.handle.net/1773/37129.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Gamble, Madilyn Marisa. “Size-selective mortality and environmental factors affecting early marine growth during early marine life stages of sub-yearling Chinook salmon in Puget Sound, Washington.” 2016. Web. 27 Feb 2021.
Vancouver:
Gamble MM. Size-selective mortality and environmental factors affecting early marine growth during early marine life stages of sub-yearling Chinook salmon in Puget Sound, Washington. [Internet] [Thesis]. University of Washington; 2016. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/1773/37129.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Gamble MM. Size-selective mortality and environmental factors affecting early marine growth during early marine life stages of sub-yearling Chinook salmon in Puget Sound, Washington. [Thesis]. University of Washington; 2016. Available from: http://hdl.handle.net/1773/37129
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Rice University
29.
WILDER, WILLIAM RAY.
AN ELECTROPHORETIC ANALYSIS OF TEXAS GULF COAST RED DRUM (SCIAENOPS OCELLATA): IDENTIFICATION OF POSSIBLE STOCKS AND IMPLICATIONS FOR FISHERIES MANAGEMENT.
Degree: PhD, Natural Sciences, 1987, Rice University
URL: http://hdl.handle.net/1911/16114
► Red drum (Sciaenops ocellata) from seven of the nine major embayments of the Texas Gulf Coast were electrophoretically analysed for genetic variability. Indices of genetic…
(more)
▼ Red drum (Sciaenops ocellata) from seven of the nine major embayments of the Texas Gulf Coast were electrophoretically analysed for genetic variability. Indices of genetic similarity and distance were derived, as well as estimates of genetic divergence between bays. Cluster analysis phenograms were developed, and possible causes for population structure were addressed.
Forty presumptive loci were screened, of which 30 proved to be of value for genetic population analysis. Percent polymorphic loci and heterozygosity/locus/individual ranged from 6.7%-13.3% and 0.025-0.042 respectively. These values were lower than those reported in similar studies, including some dealing specifically with Sciaenidae, but remained within the range reported for teleosts in general.
A total of thirteen tests of genetic similarity/distance were performed. Of these tests, no segregation below a genetic identity of 0.95 was detected in those samples large enough to statistically satisfy the analysis. Upon exclusion of the small samples, no differentiation below 0.97 was demonstrated.
Contingency chi-square tests and F-Statistics found only extremely low levels of divergence. Indeed, none of the divergence indicated was significant in terms of distinction of subpopulations among bays. This lack of differentiation in spite of apparently low levels of interbay migration was explained as a function of the dichotomus life stages. While juveniles are geographically isolated, adults occupy the open waters of the Gulf of Mexico, and have yet to be thoroughly described from either a life history or reproductive strategy viewpoint.
The indicated single stock of reproductively active red drum in the Gulf requires further investigation, in order to accurately determine migrational habits as well as breeding success. The implications for management of the fishery at present are to regulate the resource as a single stock; as well as institute a comprehensive physical and biochemical study for future policy formulation.
Subjects/Keywords: Fisheries and aquatic sciences
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APA (6th Edition):
WILDER, W. R. (1987). AN ELECTROPHORETIC ANALYSIS OF TEXAS GULF COAST RED DRUM (SCIAENOPS OCELLATA): IDENTIFICATION OF POSSIBLE STOCKS AND IMPLICATIONS FOR FISHERIES MANAGEMENT. (Doctoral Dissertation). Rice University. Retrieved from http://hdl.handle.net/1911/16114
Chicago Manual of Style (16th Edition):
WILDER, WILLIAM RAY. “AN ELECTROPHORETIC ANALYSIS OF TEXAS GULF COAST RED DRUM (SCIAENOPS OCELLATA): IDENTIFICATION OF POSSIBLE STOCKS AND IMPLICATIONS FOR FISHERIES MANAGEMENT.” 1987. Doctoral Dissertation, Rice University. Accessed February 27, 2021.
http://hdl.handle.net/1911/16114.
MLA Handbook (7th Edition):
WILDER, WILLIAM RAY. “AN ELECTROPHORETIC ANALYSIS OF TEXAS GULF COAST RED DRUM (SCIAENOPS OCELLATA): IDENTIFICATION OF POSSIBLE STOCKS AND IMPLICATIONS FOR FISHERIES MANAGEMENT.” 1987. Web. 27 Feb 2021.
Vancouver:
WILDER WR. AN ELECTROPHORETIC ANALYSIS OF TEXAS GULF COAST RED DRUM (SCIAENOPS OCELLATA): IDENTIFICATION OF POSSIBLE STOCKS AND IMPLICATIONS FOR FISHERIES MANAGEMENT. [Internet] [Doctoral dissertation]. Rice University; 1987. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/1911/16114.
Council of Science Editors:
WILDER WR. AN ELECTROPHORETIC ANALYSIS OF TEXAS GULF COAST RED DRUM (SCIAENOPS OCELLATA): IDENTIFICATION OF POSSIBLE STOCKS AND IMPLICATIONS FOR FISHERIES MANAGEMENT. [Doctoral Dissertation]. Rice University; 1987. Available from: http://hdl.handle.net/1911/16114
Michigan State University
30.
Williams, Mart Christopher.
Spatial, temporal, and cohort-related patterns in the contribution of wild Chinook salmon (Oncorhynchus tshawytscha) to total Chinook harvest in Lake Michigan.
Degree: 2012, Michigan State University
URL: http://etd.lib.msu.edu/islandora/object/etd:483
► Thesis M.S. Michigan State University. Fisheries and Wildlife 2012.
ABSTRACTSPATIAL, TEMPORAL, AND COHORT-RELATED PATTERNS IN THE CONTRIBUTION OF WILD CHINOOK SALMON (ONCORHYNCHUS TSHAWYTSCHA) TO TOTAL…
(more)
▼ Thesis M.S. Michigan State University. Fisheries and Wildlife 2012.
ABSTRACTSPATIAL, TEMPORAL, AND COHORT-RELATED PATTERNS IN THE CONTRIBUTION OF WILD CHINOOK SALMON (ONCORHYNCHUS TSHAWYTSCHA) TO TOTAL CHINOOK HARVEST IN LAKE MICHIGANByMart Christopher WilliamsDuring 2006-2010, the majority of hatchery-produced Chinook salmon (Oncorhynchus tshawytscha) stocked into Lake Michigan were marked with a combination of oxytetracycline (OTC), coded-wire-tags (CWT), and fin-clips to distinguish between hatchery and wild origin. The goals of this research were to: (1) evaluate the accuracy and reproducibility of the OTC mark, (2) examine spatial, temporal, and cohort-related patterns in the contribution of wild Chinook salmon, and (3) explore how differences in size-at-age and maturity-at-age may affect the proportion of wild Chinook salmon. OTC mark accuracy and reproducibility was determined to be adequate based on the error matrix fish, OTC mark quality distribution, and OTC mark presence/absence reader agreement was excellent. The lakewide proportion of wild age-1 Chinook salmon for four year-classes ranged from 53.52 to 56.92% with little interannual variation. The proportion of wild Chinook salmon increased as the fish became older (i.e., age-effect), suggesting differential survival between hatchery and wild fish. The proportion of wild age-1 Chinook salmon was greater in Michigan than Wisconsin, but was similar for older ages. The proportions of wild Chinook salmon for northern and southern Lake Michigan were similar for all four age-classes. The proportion of wild Chinook salmon in the northeast, northwest, and southwest regions all had an age-effect, however, the southeast region did not have an age-effect. The southeast region had the highest proportion of wild age-1 Chinook salmon.
Description based on online resource; title from PDF t.p. (ProQuest, viewed Nov. 14, 2013)
Advisors/Committee Members: Jones, Michael, Brenden, Travis, Murphy, Cheryl, Claramunt, Randy.
Subjects/Keywords: Chinook salmon – Michigan, Lake; Chinook salmon; Fisheries and aquatic sciences
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APA (6th Edition):
Williams, M. C. (2012). Spatial, temporal, and cohort-related patterns in the contribution of wild Chinook salmon (Oncorhynchus tshawytscha) to total Chinook harvest in Lake Michigan. (Thesis). Michigan State University. Retrieved from http://etd.lib.msu.edu/islandora/object/etd:483
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Williams, Mart Christopher. “Spatial, temporal, and cohort-related patterns in the contribution of wild Chinook salmon (Oncorhynchus tshawytscha) to total Chinook harvest in Lake Michigan.” 2012. Thesis, Michigan State University. Accessed February 27, 2021.
http://etd.lib.msu.edu/islandora/object/etd:483.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Williams, Mart Christopher. “Spatial, temporal, and cohort-related patterns in the contribution of wild Chinook salmon (Oncorhynchus tshawytscha) to total Chinook harvest in Lake Michigan.” 2012. Web. 27 Feb 2021.
Vancouver:
Williams MC. Spatial, temporal, and cohort-related patterns in the contribution of wild Chinook salmon (Oncorhynchus tshawytscha) to total Chinook harvest in Lake Michigan. [Internet] [Thesis]. Michigan State University; 2012. [cited 2021 Feb 27].
Available from: http://etd.lib.msu.edu/islandora/object/etd:483.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Williams MC. Spatial, temporal, and cohort-related patterns in the contribution of wild Chinook salmon (Oncorhynchus tshawytscha) to total Chinook harvest in Lake Michigan. [Thesis]. Michigan State University; 2012. Available from: http://etd.lib.msu.edu/islandora/object/etd:483
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
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