subject:(California Current System)

San Jose State University

1. Schneider, Stephanie Rianne. Reproductive Performance, Foraging Effort, and Diet of an Apex Predator, the Common Murre, at one of the Largest Nesting Colonies in the California Current System.

Degree: MS, Moss Landing Marine Laboratories, 2018, San Jose State University

URL: https://doi.org/10.31979/etd.7p63-75jz ; https://scholarworks.sjsu.edu/etd_theses/4982

► Common Murre (Uria aalge) are the most abundant avian apex predator nesting in the California Current System (CCS) and nesting is the most energetically… (more)

Subjects/Keywords: apex predator; California Current System; common murre; diet; foraging effort; reproduction

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APA (6^th Edition):

Schneider, S. R. (2018). Reproductive Performance, Foraging Effort, and Diet of an Apex Predator, the Common Murre, at one of the Largest Nesting Colonies in the California Current System. (Masters Thesis). San Jose State University. Retrieved from https://doi.org/10.31979/etd.7p63-75jz ; https://scholarworks.sjsu.edu/etd_theses/4982

Chicago Manual of Style (16^th Edition):

Schneider, Stephanie Rianne. “Reproductive Performance, Foraging Effort, and Diet of an Apex Predator, the Common Murre, at one of the Largest Nesting Colonies in the California Current System.” 2018. Masters Thesis, San Jose State University. Accessed January 22, 2021. https://doi.org/10.31979/etd.7p63-75jz ; https://scholarworks.sjsu.edu/etd_theses/4982.

MLA Handbook (7^th Edition):

Schneider, Stephanie Rianne. “Reproductive Performance, Foraging Effort, and Diet of an Apex Predator, the Common Murre, at one of the Largest Nesting Colonies in the California Current System.” 2018. Web. 22 Jan 2021.

Vancouver:

Schneider SR. Reproductive Performance, Foraging Effort, and Diet of an Apex Predator, the Common Murre, at one of the Largest Nesting Colonies in the California Current System. [Internet] [Masters thesis]. San Jose State University; 2018. [cited 2021 Jan 22]. Available from: https://doi.org/10.31979/etd.7p63-75jz ; https://scholarworks.sjsu.edu/etd_theses/4982.

Council of Science Editors:

Schneider SR. Reproductive Performance, Foraging Effort, and Diet of an Apex Predator, the Common Murre, at one of the Largest Nesting Colonies in the California Current System. [Masters Thesis]. San Jose State University; 2018. Available from: https://doi.org/10.31979/etd.7p63-75jz ; https://scholarworks.sjsu.edu/etd_theses/4982

2. McGee, Kevin. Assessing the Impacts of Greenhouse Gasses on Upwelling and Surface Temperature in the California Current System.

Degree: MS, Environmental Science & Civil Engineering, 2020, Loyola Marymount University

URL: https://digitalcommons.lmu.edu/etd/904

► The California Current system (CCS) is home to a vast and diverse marine coastal ecosystem. Upwelling is an oceanic phenomenon wind-driven displacement of surface… (more)

▼ The California Current system (CCS) is home to a vast and diverse marine coastal ecosystem. Upwelling is an oceanic phenomenon wind-driven displacement of surface water brings cold nutrient-rich water from the ocean bottom to surface waters. Along the coast in the CCS, upwelling occurs via the advection of water perpendicular to the shoreline northerly winds, a phenomenon called “Ekman Transport”. In the open ocean. Wind stress curl causes disruption of normal currents, resulting in small pockets of upwelled or downwelled water (downwelling is the movement of water downward in the ocean, the opposite of upwelling). This process is called “Ekman Pumping”, and over large swaths of ocean, it can result in a notable increase/decrease in net upwelling. Upwelling is one of the main driving forces behind the diversity and strength of the ecosystems within the CCS. The Bakun hypothesis (Bakun, 1990) suggests that with the future increase of atmospheric greenhouse gases (GHGs), Eastern Boundary Upwelling Systems (EBUSs) will experience an increase in upwelling intensity and season duration. The Bakun hypothesis has been proven to be an accurate description of the mechanisms of change expected in all major EBUSs in the world, except for the CCS, where only weak correlations have been made (Sydeman, García-Reyes, Schoeman, D. S. Rykaczewski, R. R. . Thompson, Black, & Bograd, 2014). A recent study by Wang et al. 2015 found weak correlations of decreases in upwelling intensity in the CCS, which would suggest that the Bakun Hypothesis does not accurately depict the future of the CCS. Previous climate change CCS studies have relied on atmosphere-ocean global climate models (AOGCMs), which are typically performed on a horizontal grid too coarse to accurately depict the physical changes expected in the CCS. In this study, a 10-member ensemble of high resolution regional climate model (RCM) climate change experiments driven by 10 AOGCMs is used to project changes in the timing and intensity of the upwelling season within the CCS and test the Bakun Hypothesis. We also consider Surface Temperature to extrapolate how changes, if any, compound or counteract the accuracy of the Bakun Hypothesis. We find a significant decrease of 6 m³/s/100m in mean Ekman Transport and an increase of 1.3 ⁰C in mean Surface Temperature. A 1.1×10^(-06) m/s decrease in mean Ekman Pumping is also observed, but these findings are not robust. We also find no change to the length or timing of the upwelling season. The decrease in Ekman Transport and increase in Surface Temperature could compound upon each other and cause damage to vulnerable ecosystems within the CCS, most notably in the latitudinal range of 34°-40° along the coast, as future GHGs concentrate in the atmosphere. In the shallow ocean, decreased upwelling intensity and increased stratification will inhibit the movement of nutrients that primary producers rely on, thus stifling phytoplankton and zooplankton growth. Increases in surface temperature could also create new avenues of… Advisors/Committee Members: Jeremy S. Pal, John Dorsey, Donald R. Kendall.

Subjects/Keywords: Climate Change; California Current System; Marine Biology; Civil and Environmental Engineering

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APA (6^th Edition):

McGee, K. (2020). Assessing the Impacts of Greenhouse Gasses on Upwelling and Surface Temperature in the California Current System. (Masters Thesis). Loyola Marymount University. Retrieved from https://digitalcommons.lmu.edu/etd/904

Chicago Manual of Style (16^th Edition):

McGee, Kevin. “Assessing the Impacts of Greenhouse Gasses on Upwelling and Surface Temperature in the California Current System.” 2020. Masters Thesis, Loyola Marymount University. Accessed January 22, 2021. https://digitalcommons.lmu.edu/etd/904.

MLA Handbook (7^th Edition):

McGee, Kevin. “Assessing the Impacts of Greenhouse Gasses on Upwelling and Surface Temperature in the California Current System.” 2020. Web. 22 Jan 2021.

Vancouver:

McGee K. Assessing the Impacts of Greenhouse Gasses on Upwelling and Surface Temperature in the California Current System. [Internet] [Masters thesis]. Loyola Marymount University; 2020. [cited 2021 Jan 22]. Available from: https://digitalcommons.lmu.edu/etd/904.

Council of Science Editors:

McGee K. Assessing the Impacts of Greenhouse Gasses on Upwelling and Surface Temperature in the California Current System. [Masters Thesis]. Loyola Marymount University; 2020. Available from: https://digitalcommons.lmu.edu/etd/904

Georgia Tech

3. Pozo Buil, Maria Mercedes. Exploiting subsurface ocean dynamics for decadal predictability in the upwelling systems of the Eastern North Pacific.

Degree: PhD, Earth and Atmospheric Sciences, 2017, Georgia Tech

URL: http://hdl.handle.net/1853/60704

► Given the strong recent interest in the decadal timescale variability and the potential for its predictability, it is critical to identify dynamics that carry inherent… (more)

▼ Given the strong recent interest in the decadal timescale variability and the potential for its predictability, it is critical to identify dynamics that carry inherent decadal-scale predictability. This work enhances our understanding and prediction capability of the subsurface signature of the decadal variability in the eastern North Pacific upwelling systems using reanalysis products and a set of eddy-resolving ocean model simulations. We show that subsurface temperature anomalies propagated by mean advection along the North Pacific Current significantly contribute through mean upwelling to decadal changes of surface temperature in the Gulf of Alaska. We also show that this influence is comparable to the contribution associated with variations in atmospheric winds. We find that subsurface anomalies in the core of the North Pacific Current propagate temperature, salinity, and oxygen signals downstream into the coastal California Current upwelling system, following the path of the mean gyre circulation with a time scale of 10 years. We suggest these propagation dynamics lead to potential predictability of ocean tracers, specifically oxygen and nutrients. Using reanalysis products and a set of eddy-resolving ocean model simulations, we provide evidence that supports the proposed inherent decadal predictability associated with the propagation of subsurface anomalies. We quantify the predictability of impacts associated with the arrival of the subsurface anomalies in the California Current upwelling system. We find a region of strong deterministic, predictable variance in the core of the North Pacific Current and in the sub-polar gyre region. Finally, we propose a dynamical subsurface connection between the western and eastern boundary, with subsurface anomalies generating and propagating eastward from the Kuroshio-Oyashio Extension region in the Western Pacific all the way to the California Current region in the Eastern Pacific. Advisors/Committee Members: Di Lorenzo, Emanuele (advisor), Bracco, Annalisa (committee member), Ito, Taka (committee member), Cobb, Kim (committee member), Bograd, Steven (committee member).

Subjects/Keywords: Subsurface ocean dynamics; Decadal predictability; California current system; Gulf of Alaska; ROMS ensemble

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APA (6^th Edition):

Pozo Buil, M. M. (2017). Exploiting subsurface ocean dynamics for decadal predictability in the upwelling systems of the Eastern North Pacific. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/60704

Chicago Manual of Style (16^th Edition):

Pozo Buil, Maria Mercedes. “Exploiting subsurface ocean dynamics for decadal predictability in the upwelling systems of the Eastern North Pacific.” 2017. Doctoral Dissertation, Georgia Tech. Accessed January 22, 2021. http://hdl.handle.net/1853/60704.

MLA Handbook (7^th Edition):

Pozo Buil, Maria Mercedes. “Exploiting subsurface ocean dynamics for decadal predictability in the upwelling systems of the Eastern North Pacific.” 2017. Web. 22 Jan 2021.

Vancouver:

Pozo Buil MM. Exploiting subsurface ocean dynamics for decadal predictability in the upwelling systems of the Eastern North Pacific. [Internet] [Doctoral dissertation]. Georgia Tech; 2017. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/1853/60704.

Council of Science Editors:

Pozo Buil MM. Exploiting subsurface ocean dynamics for decadal predictability in the upwelling systems of the Eastern North Pacific. [Doctoral Dissertation]. Georgia Tech; 2017. Available from: http://hdl.handle.net/1853/60704

University of Washington

4. Stone, Hally. Transport effects on coastal productivity and harmful algal blooms.

Degree: PhD, 2020, University of Washington

URL: http://hdl.handle.net/1773/46534

► This dissertation examines the effect of transport on coastal productivity and harmful algal blooms in coastal upwelling systems in three parts, using the Pacific Northwest… (more)

▼ This dissertation examines the effect of transport on coastal productivity and harmful algal blooms in coastal upwelling systems in three parts, using the Pacific Northwest coastal ocean (also referred to as the Northern California Current System) and the greater California Current System (CCS) as a case study. These three studies utilize a combination of observations and model output. Chapter 2 investigates the effects of upwelling variability and large-scale advection on slope and shelf water properties in the Northern CCS using both Eulerian and Lagrangian analyses in a 7-year ROMS hindcast model. Results suggest that variability in the depth of the California Undercurrent as well as in alongshore local and remote wind stress are responsible for about 50% of shelf bottom water variability, and that the shelf and slope experience similar large-scale alongcoast advection patterns. These results were then combined with observations of dissolved oxygen and dissolved inorganic carbon concentrations to approximate the relative effects of variability in upwelling and in large-scale advection on shelf and slope water properties. Next, in Chapter 3, we examine the relationship between phytoplankton productivity, wind patterns, and retention in the Northern and Central CCS using chlorophyll concentration and wind stress derived from satellite observations, as well as particle tracking experiments conducted in the same ROMS model. Results from this analysis suggest that while there is a dome-shaped relationship between mean chlorophyll concentration and wind stress for the whole system, the Central and Northern CCS have significantly different relationships. However, results from the particle tracking experiments suggest that the effect of wind intermittency on retention is minimal in the Northern CCS on a 1˚ latitude-wide scale. Lastly, we present a revised hypothesis to describe the relationship between chlorophyll concentration and wind stress in the CCS that includes the influence of non-upwelling-derived nutrients in the Northern CCS. Finally, in Chapter 4 we use similar particle tracking experiments combined with observations of Pseudo-nitzschia cells at Pacific Northwest coastal beaches and meridional wind stress to test whether the model reproduces the observed beaching patterns of Pseudo-nitzschia cells. With the goal of improving how the model is used to forecast beaching events, we test a suite of beaching criteria as well as two resolutions of the model. Results suggest that allowing for multiple coastal proximity events as well as using the loosest beaching criteria resulted in the most successfully simulated HAB events in the medium-resolution version of the model, and that the high-resolution version of the model performed best overall. All together, these three studies help elucidate the numerous effects that transport, both positive and negative, can have on the biology of the coastal ocean. Advisors/Committee Members: Banas, Neil S (advisor), MacCready, Parker (advisor).

Subjects/Keywords: California Current System; coastal upwelling dynamics; harmful algal blooms; phytoplankton productivity; regional oceanic modeling system; wind; Physical oceanography; Biological oceanography; Oceanography

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APA (6^th Edition):

Stone, H. (2020). Transport effects on coastal productivity and harmful algal blooms. (Doctoral Dissertation). University of Washington. Retrieved from http://hdl.handle.net/1773/46534

Chicago Manual of Style (16^th Edition):

Stone, Hally. “Transport effects on coastal productivity and harmful algal blooms.” 2020. Doctoral Dissertation, University of Washington. Accessed January 22, 2021. http://hdl.handle.net/1773/46534.

MLA Handbook (7^th Edition):

Stone, Hally. “Transport effects on coastal productivity and harmful algal blooms.” 2020. Web. 22 Jan 2021.

Vancouver:

Stone H. Transport effects on coastal productivity and harmful algal blooms. [Internet] [Doctoral dissertation]. University of Washington; 2020. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/1773/46534.

Council of Science Editors:

Stone H. Transport effects on coastal productivity and harmful algal blooms. [Doctoral Dissertation]. University of Washington; 2020. Available from: http://hdl.handle.net/1773/46534

University of California – Santa Cruz

5. Batista, Fabian. An examination of the marine nitrogen cycle: insights from novel stable nitrogen isotopic approaches.

Degree: Ocean Sciences, 2016, University of California – Santa Cruz

URL: http://www.escholarship.org/uc/item/8dg807nm

► Paleoceanographic studies typically employ stable nitrogen isotopic measurements of total combustible N (δ15NTN) from marine sediments to infer temporal changes in surface ocean marine N… (more)

▼ Paleoceanographic studies typically employ stable nitrogen isotopic measurements of total combustible N (δ15NTN) from marine sediments to infer temporal changes in surface ocean marine N dynamics. However, δ15NTN is a highly non-specific measurement, susceptible to confounding issues including non-marine N sources, and offers little, if any, information regarding degradation and/or alteration of primary δ15N signals. Recent development of novel biomarker and microfossil based proxies provide new analytical capabilities to circumvent issues with δ15NTN. Here, I explore the utility of compound specific nitrogen isotopic analysis of individual amino acids measurements (δ15NAA) of proteinaceous material isolated from marine sediments and deep-sea coral. With these data I infer past changes in nitrate δ15N fueling primary production at the base of the food web, ecosystem structure, and the extent of heterotrophic resynthesis influencing sedimentary and coral-skeletal δ15NTN records. Within sediments and corals, I demonstrate that δ15NAA based parameters reflect that of sinking particles and surface collected planktonic biomass and thus serve as a robust, albeit complex proxy to infer ecosystem and nutrient dynamic changes for at least the last few hundred years on the California Margin. In sediments I find an unexpected δ15N offset in major operational fractions and molecular compound classes. This result (1) challenges a major assumption organic nitrogen in sediments is dominated by amide functionality (i.e., proteinaceous N) and (2) highlights possible issues with standard protein hydrolysis techniques. Lastly, I analyze the δ15N composition of foraminifera-bound N (FB-δ15N) to assess the Plio-Pleistocene history of whole ocean nitrogen dynamics from the oligotrophic North Pacific for the last 5 million years. This region contains calcareous nannofossil rich sediments, ideal for preserved FB-δ15N records. These new FB-δ15N records support an expansion of suboxic regions, consistent with previous evidence, but also indicate that the whole ocean δ15N budget was stable throughout the Plio-Pleistocene. This latter result implies that kinetic isotopic fractionations of marine N transformations and the ratio of pelagic to benthic denitrification, must not have changed during the Plio-Pleistocene transition, despite drastic global scale changes in sea level, shelf area, and volume of the major oxygen deficient zones at this time.

Subjects/Keywords: Chemical oceanography; Geochemistry; Amino acids; California Current System; Foraminifera; Marine Nitrogen Cycle; Stable Nitrogen Isotopes; Western Pacific Ocean

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APA (6^th Edition):

Batista, F. (2016). An examination of the marine nitrogen cycle: insights from novel stable nitrogen isotopic approaches. (Thesis). University of California – Santa Cruz. Retrieved from http://www.escholarship.org/uc/item/8dg807nm

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Batista, Fabian. “An examination of the marine nitrogen cycle: insights from novel stable nitrogen isotopic approaches.” 2016. Thesis, University of California – Santa Cruz. Accessed January 22, 2021. http://www.escholarship.org/uc/item/8dg807nm.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Batista, Fabian. “An examination of the marine nitrogen cycle: insights from novel stable nitrogen isotopic approaches.” 2016. Web. 22 Jan 2021.

Vancouver:

Batista F. An examination of the marine nitrogen cycle: insights from novel stable nitrogen isotopic approaches. [Internet] [Thesis]. University of California – Santa Cruz; 2016. [cited 2021 Jan 22]. Available from: http://www.escholarship.org/uc/item/8dg807nm.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Batista F. An examination of the marine nitrogen cycle: insights from novel stable nitrogen isotopic approaches. [Thesis]. University of California – Santa Cruz; 2016. Available from: http://www.escholarship.org/uc/item/8dg807nm

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Washington

6. Koehlinger, Julie Ann. Temperature Anomalies in the Olympic Coast National Marine Sanctuary and the Influence of Winds and Currents during the 2013-2014 Northeast Pacific Marine Heat Wave and 2015 El Niño.

Degree: 2018, University of Washington

URL: http://hdl.handle.net/1773/42443

► The Olympic Coast National Marine Sanctuary is located in the northeast Pacific Ocean and off the northwest coast of Washington. Using spring to fall water… (more)

Subjects/Keywords: California Current System; marine heat wave; nearshore; Olympic Coast National Marine Sanctuary; temperature anomalies; upwelling; Aquatic sciences; Physical oceanography; Marine affairs

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APA (6^th Edition):

Koehlinger, J. A. (2018). Temperature Anomalies in the Olympic Coast National Marine Sanctuary and the Influence of Winds and Currents during the 2013-2014 Northeast Pacific Marine Heat Wave and 2015 El Niño. (Thesis). University of Washington. Retrieved from http://hdl.handle.net/1773/42443

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Koehlinger, Julie Ann. “Temperature Anomalies in the Olympic Coast National Marine Sanctuary and the Influence of Winds and Currents during the 2013-2014 Northeast Pacific Marine Heat Wave and 2015 El Niño.” 2018. Thesis, University of Washington. Accessed January 22, 2021. http://hdl.handle.net/1773/42443.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Koehlinger, Julie Ann. “Temperature Anomalies in the Olympic Coast National Marine Sanctuary and the Influence of Winds and Currents during the 2013-2014 Northeast Pacific Marine Heat Wave and 2015 El Niño.” 2018. Web. 22 Jan 2021.

Vancouver:

Koehlinger JA. Temperature Anomalies in the Olympic Coast National Marine Sanctuary and the Influence of Winds and Currents during the 2013-2014 Northeast Pacific Marine Heat Wave and 2015 El Niño. [Internet] [Thesis]. University of Washington; 2018. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/1773/42443.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Koehlinger JA. Temperature Anomalies in the Olympic Coast National Marine Sanctuary and the Influence of Winds and Currents during the 2013-2014 Northeast Pacific Marine Heat Wave and 2015 El Niño. [Thesis]. University of Washington; 2018. Available from: http://hdl.handle.net/1773/42443

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of South Carolina

7. Bartlett, John Thomas. Examining the Sensitivity of Surface Chlorophyll to Upwelling Events of Variable Frequency in the California Current System.

Degree: MSin Marine Science, Marine Science, 2015, University of South Carolina

URL: https://scholarcommons.sc.edu/etd/3192

► Eastern Boundary Upwelling Systems (EBUS) spatially encompass approximately 1% of the ocean surface area, but are responsible for nearly 20% of global fisheries production.… (more)

▼ Eastern Boundary Upwelling Systems (EBUS) spatially encompass approximately 1% of the ocean surface area, but are responsible for nearly 20% of global fisheries production. This significant biological production is primarily attributed to the nutrient-rich waters brought to the euphotic zone through a physical process called upwelling. In an attempt to understand the various physical and biological processes occurring on a wide range of temporal and spatial scales, the California Current System (CCS), one of the major EBUS, has been subject to a multitude of scientific studies over the past several decades. Recent modeling enhancements have enabled researchers to investigate mesoscale processes contributing to physical and biological variability within the CCS. This information could be used to improve our understanding of plankton dynamics and ultimately, be applied to higher trophic levels and coastal fisheries management. The primary focus of this study was to investigate whether high-frequency (3 – 7 days) wind events generate a positive response in surface chlorophyll-a (chl-a) within regions of the CCS. The high-frequency wind events were hypothesized to be insufficient to generate enough upwelling and subsequent lift in the nutricline to produce a significant response in surface chl-a concentrations. Rather, I expected that lowfrequency (7 – 30 days) upwelling-favorable wind events would raise the nutricline for a period long enough to sustain a phytoplankton bloom. Utilizing high-resolution climate model data, a frequency analysis was performed by conducting a correlation between vi chl-a concentrations and meridional wind stress (τy) events at lagged intervals. Highfrequency τy events are found to have a minimal impact on chl-a concentrations throughout the CCS. At low frequencies, chl-a concentrations were shown to have a positive response to τy events within 100km of the CCS coastline. These results imply that high-frequency upwelling events have little to no immediate impact on the chl-a concentrations. However, the low-frequency τy events appear to persist long enough to generate a response in surface chl-a and positively impact productivity within the CCS. Advisors/Committee Members: Ryan Rykaczewski.

Subjects/Keywords: Life Sciences; Marine Biology; Eastern Boundary Upwelling Systems; upwelling; fisheries production; euphotic zone; California Current System; chlorophyll-a

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Bartlett, J. T. (2015). Examining the Sensitivity of Surface Chlorophyll to Upwelling Events of Variable Frequency in the California Current System. (Masters Thesis). University of South Carolina. Retrieved from https://scholarcommons.sc.edu/etd/3192

Chicago Manual of Style (16^th Edition):

Bartlett, John Thomas. “Examining the Sensitivity of Surface Chlorophyll to Upwelling Events of Variable Frequency in the California Current System.” 2015. Masters Thesis, University of South Carolina. Accessed January 22, 2021. https://scholarcommons.sc.edu/etd/3192.

MLA Handbook (7^th Edition):

Bartlett, John Thomas. “Examining the Sensitivity of Surface Chlorophyll to Upwelling Events of Variable Frequency in the California Current System.” 2015. Web. 22 Jan 2021.

Vancouver:

Bartlett JT. Examining the Sensitivity of Surface Chlorophyll to Upwelling Events of Variable Frequency in the California Current System. [Internet] [Masters thesis]. University of South Carolina; 2015. [cited 2021 Jan 22]. Available from: https://scholarcommons.sc.edu/etd/3192.

Council of Science Editors:

Bartlett JT. Examining the Sensitivity of Surface Chlorophyll to Upwelling Events of Variable Frequency in the California Current System. [Masters Thesis]. University of South Carolina; 2015. Available from: https://scholarcommons.sc.edu/etd/3192

8. Abdala, Zuzanna Maria. Diatom Community Composition Shifts Driven by Coherent Cyclonic Mesoscale Eddies in the California Current System.

Degree: MS, Ocean/Earth/Atmos Sciences, 2020, Old Dominion University

URL: 9798641075563 ; https://digitalcommons.odu.edu/oeas_etds/172

► The California Current System (CCS) is characterized by an equatorward flowing eastern boundary current, as well as seasonal wind-driven coastal upwelling which supplies nutrient-rich… (more)

▼ The California Current System (CCS) is characterized by an equatorward flowing eastern boundary current, as well as seasonal wind-driven coastal upwelling which supplies nutrient-rich waters to the surface and drives high coastal productivity. Cyclonic mesoscale eddies form off the coast in the CCS where they trap the highly productive upwelled coastal waters, along with their resident planktonic communities, and transport them offshore into the more oligotrophic California Current waters. The interaction between waters within and outside of the eddies is limited, and so the eddies act as natural mesocosms, where the resident phytoplankton population undergo ecological succession as the eddy ages. Diatoms, a unicellular and eukaryotic subgroup of phytoplankton, have high sensitivities to changes in their environment, particularly temperature and nutrient distributions. In this study, I examine how diatom communities trapped within mesoscale eddies in the CCS evolve in response to environmental shifts as they travel offshore. In a transect that bisected two cyclonic eddies off the coast of northern California near Cape Mendocino, diatom samples were collected and later sequenced using high throughput sequencing. Although the eddies both originated in broadly the same location, they had formed 2 and 10 months previous to sampling, respectively. Because of this difference in the age of the eddies, I can approximate the time evolution of a single CCS eddy by comparing their biogeochemical and ecological characteristics. The older, offshore eddy was low in macronutrients, nitrate-limited, low in Fe, and lower in diversity, the last result largely driven by the relative abundance of a single Rhizosolenia species. Rhizosolenia accounted for over 50% of the diatom community in 5 out of 8 offshore eddy stations, with one of these stations characterized by nearly 75% Rhizosolenia. Our results suggest that the Rhizosolenia species present in the offshore eddy is one that bypasses nitrate limitation by forming vertically migrating mats. I also found elevated relative abundances of Pseudo-nitzschia cf. sp. and Thalassiothrix sp. in the offshore eddy. The younger, nearshore eddy was higher in macronutrients, Fe-limited, and higher in diversity. Top abundances for this eddy include Pseudo-nitzschia sp., Fragilariopsis kerguelensis, F. cf. kerguelensis, Thalassiosira ritscheri, Asteromphalus sp., and T. oestrupii. Our results show that the biogeochemistry and diatom community structure within cyclonic eddies evolve as the eddies move offshore from the coast. The high-nutrient coastal waters are initially dominated by coastal diatoms known to have higher nutrient requirements. As the nutrients within the eddy are drawn down over time, species equipped with low-nutrient adaptations can become dominant. The combined effect of transport by, and ecological succession within the eddies is likely a key factor in… Advisors/Committee Members: P. Dreux Chappell, Fred C. Dobbs, Sophie Clayton.

Subjects/Keywords: California Current System (CSS); Community composition; Diatom; Eddies; Rhizosolenia; Succession; Biogeochemistry; Ecology and Evolutionary Biology; Microbiology; Oceanography

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APA (6^th Edition):

Abdala, Z. M. (2020). Diatom Community Composition Shifts Driven by Coherent Cyclonic Mesoscale Eddies in the California Current System. (Thesis). Old Dominion University. Retrieved from 9798641075563 ; https://digitalcommons.odu.edu/oeas_etds/172

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Abdala, Zuzanna Maria. “Diatom Community Composition Shifts Driven by Coherent Cyclonic Mesoscale Eddies in the California Current System.” 2020. Thesis, Old Dominion University. Accessed January 22, 2021. 9798641075563 ; https://digitalcommons.odu.edu/oeas_etds/172.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Abdala, Zuzanna Maria. “Diatom Community Composition Shifts Driven by Coherent Cyclonic Mesoscale Eddies in the California Current System.” 2020. Web. 22 Jan 2021.

Vancouver:

Abdala ZM. Diatom Community Composition Shifts Driven by Coherent Cyclonic Mesoscale Eddies in the California Current System. [Internet] [Thesis]. Old Dominion University; 2020. [cited 2021 Jan 22]. Available from: 9798641075563 ; https://digitalcommons.odu.edu/oeas_etds/172.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Abdala ZM. Diatom Community Composition Shifts Driven by Coherent Cyclonic Mesoscale Eddies in the California Current System. [Thesis]. Old Dominion University; 2020. Available from: 9798641075563 ; https://digitalcommons.odu.edu/oeas_etds/172

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Oregon State University

9. Motley, Jennifer. Local and Regional Patterns in Eelgrass (Zostera marina L.) Communities Along an Upwelling-Productivity Gradient in Oregon Estuaries, USA.

Degree: MS, 2017, Oregon State University

URL: http://hdl.handle.net/1957/61713

► In this thesis, I investigate the organization of eelgrass (Zostera marina L.) and mesograzer communities across local and regional scales in three upwelling- influenced estuaries… (more)

▼ In this thesis, I investigate the organization of eelgrass (Zostera marina L.) and mesograzer communities across local and regional scales in three upwelling- influenced estuaries located along the Oregon coast, USA. Eelgrass ecosystems are an important source of primary production in estuarine systems, providing numerous ecosystem services, including nursery habitat for commercial fish, water quality improvement, and sediment stabilization. Community structure in eelgrass systems, i.e., the diversity, abundance, and composition of primary and secondary consumers, is influenced by a combination of local to regional scale variability in environmental and biotic factors. Thus, an important consideration in the management of these systems is to understand the organization of community structure across spatiotemporal scale and the implications for top-down (consumer) versus bottom-up (resource) control. In upwelling-influenced estuaries of the Pacific Northwest coast of the United States, eelgrass systems are exposed to latitudinal variability in oceanographic inputs, but the degree to which these regional effects versus local effects organize eelgrass community structure is poorly understood. Here I investigate the relationship between primary producers (eelgrass, ulvoid macroalgae, and epiphytes), epifauna mesograzers, and fish predators within and across three estuaries located on the Oregon Coast, USA (Netarts Bay, Yaquina Bay, and Coos Bay). Specifically, I asked: 1) What is the relative importance of local (within estuary) versus regional (across estuaries) scale patterns to eelgrass community structure (i.e., primary producers, epifaunal mesograzers, and fishes) in upwelling-influenced estuaries in Oregon?, 2) What is the potential role of regional oceanography versus trophic interactions in regulating eelgrass community structure, and is this dependent on spatial scale?, and 3) What are the management implications for eelgrass communities when regional and local scales are considered? I found that while local effects were important, regional (estuary) scale patterns strongly influenced community structure in eelgrass communities, providing support that regional oceanographic bottom-up forcing dominates eelgrass communities. Additionally, I found evidence for top-down control by the opisthobranch Phyllaplysia taylori on primary producers at one site within Netarts Bay. I suggest that eelgrass beds in these estuaries are mostly bottom-up systems, and further investigations should focus on quantifying the mechanistic relationship between mesograzers and primary producers at local to regional scales. Advisors/Committee Members: Tomas Nash, Fiona (advisor), Dewitt, Ted (committee member).

Subjects/Keywords: seagrass; ulvoid macroalgae; epiphytes; epifaunal mesograzer; fish; trophic cascade; top-down; bottom-up; context-dependent; Phyllaplysia taylori; California Current System; Netarts Bay; Yaquina Bay; Coos Bay; Oregon; Pacific Northwest coast

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APA (6^th Edition):

Motley, J. (2017). Local and Regional Patterns in Eelgrass (Zostera marina L.) Communities Along an Upwelling-Productivity Gradient in Oregon Estuaries, USA. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/61713

Chicago Manual of Style (16^th Edition):

Motley, Jennifer. “Local and Regional Patterns in Eelgrass (Zostera marina L.) Communities Along an Upwelling-Productivity Gradient in Oregon Estuaries, USA.” 2017. Masters Thesis, Oregon State University. Accessed January 22, 2021. http://hdl.handle.net/1957/61713.

MLA Handbook (7^th Edition):

Motley, Jennifer. “Local and Regional Patterns in Eelgrass (Zostera marina L.) Communities Along an Upwelling-Productivity Gradient in Oregon Estuaries, USA.” 2017. Web. 22 Jan 2021.

Vancouver:

Motley J. Local and Regional Patterns in Eelgrass (Zostera marina L.) Communities Along an Upwelling-Productivity Gradient in Oregon Estuaries, USA. [Internet] [Masters thesis]. Oregon State University; 2017. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/1957/61713.

Council of Science Editors:

Motley J. Local and Regional Patterns in Eelgrass (Zostera marina L.) Communities Along an Upwelling-Productivity Gradient in Oregon Estuaries, USA. [Masters Thesis]. Oregon State University; 2017. Available from: http://hdl.handle.net/1957/61713

10. Harrison, Cheryl S. Coherent Structures and Larval Transport in the California Current System.

Degree: Earth Science, 2012, University of California – Santa Cruz

URL: http://www.escholarship.org/uc/item/2n99c8c3

► In the California Current system (CCS), coherent structures such as jets and eddies strongly control the biological response to coastal upwelling. One of the outstanding… (more)

Subjects/Keywords: Biological oceanography; Mathematics; Ecology; California Current system; Dynamical sytems; Lagrangian coherent structures; Larval transport; Upewelling

…supported, so I now stand ix Chapter 1 Introduction Transport in the California Current system… …al. 2007). Figure 1.1 Satellite observations of the California Current system (… …Patterns and processes in the California Current System. Progress in Oceanography, 83(1-4… …A. Glatzmaier. Lagrangian coherent structures in the California Current system… …Equilibrium structure and dynamics of the California current system. Journal of Physical…

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APA (6^th Edition):

Harrison, C. S. (2012). Coherent Structures and Larval Transport in the California Current System. (Thesis). University of California – Santa Cruz. Retrieved from http://www.escholarship.org/uc/item/2n99c8c3

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Harrison, Cheryl S. “Coherent Structures and Larval Transport in the California Current System.” 2012. Thesis, University of California – Santa Cruz. Accessed January 22, 2021. http://www.escholarship.org/uc/item/2n99c8c3.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Harrison, Cheryl S. “Coherent Structures and Larval Transport in the California Current System.” 2012. Web. 22 Jan 2021.

Vancouver:

Harrison CS. Coherent Structures and Larval Transport in the California Current System. [Internet] [Thesis]. University of California – Santa Cruz; 2012. [cited 2021 Jan 22]. Available from: http://www.escholarship.org/uc/item/2n99c8c3.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Harrison CS. Coherent Structures and Larval Transport in the California Current System. [Thesis]. University of California – Santa Cruz; 2012. Available from: http://www.escholarship.org/uc/item/2n99c8c3

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

11. Osborne, Emily B. Development And Application Of Foraminiferal Carbonate System Proxies To Quantify Ocean Acidification In The California Current.

Degree: PhD, Marine Science, 2016, University of South Carolina

URL: https://scholarcommons.sc.edu/etd/3973

► The oceanic uptake of anthropogenic carbon has mitigated climate change, but has also resulted in a global average 0.1 decline in surface ocean pH… (more)

▼ The oceanic uptake of anthropogenic carbon has mitigated climate change, but has also resulted in a global average 0.1 decline in surface ocean pH over 20th century known as ocean acidification. The parallel reduction in carbonate ion concentration ([CO32-]) and the saturation state of seawater (Ω) has caused many major calcium carbonate-secreting organisms such as planktonic foraminifera to exhibit impaired calcification. We develop proxy calibrations and down core records that use calcification and geochemical characteristics of planktonic foraminifera as proxies for the marine carbonate system. This study focuses specifically on the surface ocean chemistry of the California Current Ecosystem (CCE), which has been identified as a region of rapidly progressing ocean acidification due to natural upwelling processes and the low buffering capacity of these waters. The calibration portion of this study uses marine sediments collected by the Santa Barbara Basin (SBB), California sediment-trapping program located in the central region of the CCE. We calibrate the relationships of Globigerina bulloides calcification intensity to [CO32-] and the B/Ca ratios of G. bulloides, Neogloboquadrina dutertrei and Neogloboquadrina incompta shells to Ω calcite using in situ measurements and model simulations of these independent variables. By applying these proxy methods to down core, our records from the SBB indicate a 20% reduction in foraminiferal calcification since ~1900, translating to a 35% decline in [CO32-] in the CCE over this period. Our high-resolution calcification record also reveals a substantial interannual to decadal modulation of ocean acidification in the CCE related to the sign of Pacific Decadal Oscillation and El Niño Southern Oscillation. In the future we can expect these climatic modes to both enhance and moderate anthropogenic ocean acidification. Based on our historic record, we predict that if atmospheric CO2 reaches 540 ppm by the year 2100 as predicted by a conservative CO3 pathway, [CO32-] will experience a net reduction of 55%, resulting in at least a 30% reduction in calcification of planktonic foraminifera that will likely be mirrored by other adversely affected marine calcifiers. Advisors/Committee Members: Robert C. Thunell.

Subjects/Keywords: Life Sciences; Marine Biology; Development And Application; Foraminiferal Carbonate System Proxies; Quantify Ocean Acidification; California Current

…35 CHAPTER 2: NATURAL AND ANTHROPOGENIC OCEAN ACIDIFICATION IN THE CALIFORNIA CURRENT AND… …data ...................37 Table 1.3 Down core calculations of marine carbonate system… …70 Table 2.2 Down core carbonate system calculations… …72 Table 2.3 Projected carbonate system calculations… …considerable effort has gone into developing foraminiferal geochemical proxies for carbonate system…

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Osborne, E. B. (2016). Development And Application Of Foraminiferal Carbonate System Proxies To Quantify Ocean Acidification In The California Current. (Doctoral Dissertation). University of South Carolina. Retrieved from https://scholarcommons.sc.edu/etd/3973

Chicago Manual of Style (16^th Edition):

Osborne, Emily B. “Development And Application Of Foraminiferal Carbonate System Proxies To Quantify Ocean Acidification In The California Current.” 2016. Doctoral Dissertation, University of South Carolina. Accessed January 22, 2021. https://scholarcommons.sc.edu/etd/3973.

MLA Handbook (7^th Edition):

Osborne, Emily B. “Development And Application Of Foraminiferal Carbonate System Proxies To Quantify Ocean Acidification In The California Current.” 2016. Web. 22 Jan 2021.

Vancouver:

Osborne EB. Development And Application Of Foraminiferal Carbonate System Proxies To Quantify Ocean Acidification In The California Current. [Internet] [Doctoral dissertation]. University of South Carolina; 2016. [cited 2021 Jan 22]. Available from: https://scholarcommons.sc.edu/etd/3973.

Council of Science Editors:

Osborne EB. Development And Application Of Foraminiferal Carbonate System Proxies To Quantify Ocean Acidification In The California Current. [Doctoral Dissertation]. University of South Carolina; 2016. Available from: https://scholarcommons.sc.edu/etd/3973

ETH Zürich

12. Frischknecht, Martin. New Perspectives on the Three-Dimensional Cycling of Carbon and Nutrients in the California Current System and its Response to ENSO.

Degree: 2018, ETH Zürich

URL: http://hdl.handle.net/20.500.11850/283522

Subjects/Keywords: Ocean Biogeochemistry; Ocean Carbon Cycle; Ocean Modeling; ENSO; California Current System; Pacific Ocean; Interannual Variability; Nutrients; Carbon Export; info:eu-repo/classification/ddc/550; Earth sciences

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Frischknecht, M. (2018). New Perspectives on the Three-Dimensional Cycling of Carbon and Nutrients in the California Current System and its Response to ENSO. (Doctoral Dissertation). ETH Zürich. Retrieved from http://hdl.handle.net/20.500.11850/283522

Chicago Manual of Style (16^th Edition):

Frischknecht, Martin. “New Perspectives on the Three-Dimensional Cycling of Carbon and Nutrients in the California Current System and its Response to ENSO.” 2018. Doctoral Dissertation, ETH Zürich. Accessed January 22, 2021. http://hdl.handle.net/20.500.11850/283522.

MLA Handbook (7^th Edition):

Frischknecht, Martin. “New Perspectives on the Three-Dimensional Cycling of Carbon and Nutrients in the California Current System and its Response to ENSO.” 2018. Web. 22 Jan 2021.

Vancouver:

Frischknecht M. New Perspectives on the Three-Dimensional Cycling of Carbon and Nutrients in the California Current System and its Response to ENSO. [Internet] [Doctoral dissertation]. ETH Zürich; 2018. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/20.500.11850/283522.

Council of Science Editors:

Frischknecht M. New Perspectives on the Three-Dimensional Cycling of Carbon and Nutrients in the California Current System and its Response to ENSO. [Doctoral Dissertation]. ETH Zürich; 2018. Available from: http://hdl.handle.net/20.500.11850/283522

13. Sojka, Brit. Integrating Human Wellbeing Assessment Into Marine Resource Management.

Degree: 2015, University of Washington

URL: http://hdl.handle.net/1773/27518

► Prioritizing social indicators of wellbeing and linking them to specific marine resource management contexts requires ongoing consideration of local community values, social change drivers and… (more)

Subjects/Keywords: California Current System; Indicators; Integrated Ecosystem Assessment; Marine affairs; Pacific Fishery Management Council; Wellbeing; Social research; Management; Fisheries and aquatic sciences; marine affairs

…this time, NOAA’s Integrated Ecosystem Assessment team for the California Current System has… …various conceptualizations of human and social wellbeing and discusses the current marine… …practices in current human wellbeing research as well as to identify the socioeconomic data… …the past three decades as well as on the formulation of the United Nations’ current… …values of individual citizens based on the idea that a certain belief system may contribute to…

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APA (6^th Edition):

Sojka, B. (2015). Integrating Human Wellbeing Assessment Into Marine Resource Management. (Thesis). University of Washington. Retrieved from http://hdl.handle.net/1773/27518

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Sojka, Brit. “Integrating Human Wellbeing Assessment Into Marine Resource Management.” 2015. Thesis, University of Washington. Accessed January 22, 2021. http://hdl.handle.net/1773/27518.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Sojka, Brit. “Integrating Human Wellbeing Assessment Into Marine Resource Management.” 2015. Web. 22 Jan 2021.

Vancouver:

Sojka B. Integrating Human Wellbeing Assessment Into Marine Resource Management. [Internet] [Thesis]. University of Washington; 2015. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/1773/27518.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Sojka B. Integrating Human Wellbeing Assessment Into Marine Resource Management. [Thesis]. University of Washington; 2015. Available from: http://hdl.handle.net/1773/27518

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Open Access Theses and Dissertations