subject:(Population dynamics)

Addis Ababa University

1. Fanaye, Tadesse. Socio-Economic Determinants of Fertility in Urban Ethiopia .

Degree: 2008, Addis Ababa University

URL: http://etd.aau.edu.et/dspace/handle/123456789/5196

► Fertility, being a major study unit in population dynamics, should be analyzed from different perspectives as it plays a pivotal role in understanding the complex… (more)

Subjects/Keywords: Fertility; Population dynamics

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APA (6^th Edition):

Fanaye, T. (2008). Socio-Economic Determinants of Fertility in Urban Ethiopia . (Thesis). Addis Ababa University. Retrieved from http://etd.aau.edu.et/dspace/handle/123456789/5196

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):

Fanaye, Tadesse. “Socio-Economic Determinants of Fertility in Urban Ethiopia .” 2008. Thesis, Addis Ababa University. Accessed April 11, 2021. http://etd.aau.edu.et/dspace/handle/123456789/5196.

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

MLA Handbook (7^th Edition):

Fanaye, Tadesse. “Socio-Economic Determinants of Fertility in Urban Ethiopia .” 2008. Web. 11 Apr 2021.

Vancouver:

Fanaye T. Socio-Economic Determinants of Fertility in Urban Ethiopia . [Internet] [Thesis]. Addis Ababa University; 2008. [cited 2021 Apr 11]. Available from: http://etd.aau.edu.et/dspace/handle/123456789/5196.

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

Council of Science Editors:

Fanaye T. Socio-Economic Determinants of Fertility in Urban Ethiopia . [Thesis]. Addis Ababa University; 2008. Available from: http://etd.aau.edu.et/dspace/handle/123456789/5196

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

Mississippi State University

2. Colosimo, Giuliano. Natural population dynamics of rock iguanas in the Bahama Archipelago.

Degree: PhD, Biological Sciences, 2016, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-10282016-102534/ ;

► Understanding whether groups of individuals represent a single panmictic gene pool, or multiple genetically structured populations across a species range should aid in predicting… (more)

▼ Understanding whether groups of individuals represent a single panmictic gene pool, or multiple genetically structured populations across a species range should aid in predicting whether specific conservation strategies would be more or less effective for species preservation. Further, contrasting the population structures of multiple coexisting taxa could foster an even deeper understanding of evolutionary divergence among demes and potentially even suggest local adaptation in the form of tight coevolutionary relationships. Finally, the analysis of population dynamics within small and isolated populations could improve our understanding of the relative importance that different evolutionary mechanisms have in predicting population persistence in the wild. Using microsatellite markers I characterized the population genetic structure in the critically endangered Cyclura cychlura cychlura iguanas on Andros Island. I found significant differences between inferred and realized rates of gene flow. This finding demonstrates that evolutionarily independent populations can occur even with high rates of dispersal. In the second and third study I contrasted patterns of genetic variability in Cyclura cychlura cychlura iguanas, ticks in the genus Amblyomma parasitizing these iguanas, and Rickettsia spp., potential pathogens transmitted by these ticks. I determined that genetic differences among Rickettsia samples and Amblyomma samples are highly concordant with genetic divergence among iguana populations. This finding suggests largely vertical dispersal of ticks and their super-parasite, a high specificity of this reptile-tick interaction, and historically low rates of dispersal in iguanas. This finding also indicates that island populations of iguanas may be locally adapted due to tight coevolutionary relationships. Finally, I investigated the mechanisms that eliminate harmful mutations in small isolated and natural populations of the critically endangered Cyclura cychlura cychlura iguanas. Using molecular tools I found indirect evidence suggesting that small natural populations can maintain significant levels of genetic variation in spite of strong selection acting against harmful mutations. Under regimes of random mating, the buildup of harmful mutations in small populations may result in a large number of inviable young. However, harmful mutations may also be eliminated when exposed to natural selection through increased competition, as population density increases. However, quantification of the relative role of competition was not feasible in this study. Advisors/Committee Members: Mark E. Welch (chair), Lisa Wallace (committee member), Gary N. Ervin (committee member), Charles R. Knapp (committee member), Brian A. Counterman (committee member), Glenn P. Gerber (committee member).

Subjects/Keywords: microsatellites; population structure; population dynamics; conservation genetics

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APA (6^th Edition):

Colosimo, G. (2016). Natural population dynamics of rock iguanas in the Bahama Archipelago. (Doctoral Dissertation). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-10282016-102534/ ;

Chicago Manual of Style (16^th Edition):

Colosimo, Giuliano. “Natural population dynamics of rock iguanas in the Bahama Archipelago.” 2016. Doctoral Dissertation, Mississippi State University. Accessed April 11, 2021. http://sun.library.msstate.edu/ETD-db/theses/available/etd-10282016-102534/ ;.

MLA Handbook (7^th Edition):

Colosimo, Giuliano. “Natural population dynamics of rock iguanas in the Bahama Archipelago.” 2016. Web. 11 Apr 2021.

Vancouver:

Colosimo G. Natural population dynamics of rock iguanas in the Bahama Archipelago. [Internet] [Doctoral dissertation]. Mississippi State University; 2016. [cited 2021 Apr 11]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-10282016-102534/ ;.

Council of Science Editors:

Colosimo G. Natural population dynamics of rock iguanas in the Bahama Archipelago. [Doctoral Dissertation]. Mississippi State University; 2016. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-10282016-102534/ ;

University of Tasmania

3. Kuipers, MR. Growth and reproduction of a short-lived cephalopod : mechanisms that facilitate population success in a highly variable environment.

Degree: 2012, University of Tasmania

URL: https://eprints.utas.edu.au/15927/2/whole-kuipers-2012.pdf

► For short-lived species seasonal fluctuations in environmental conditions plays a major part in shaping population structure and dynamics. Cephalopods are known for their short life… (more)

▼ For short-lived species seasonal fluctuations in environmental conditions plays a major part in shaping population structure and dynamics. Cephalopods are known for their short life span, rapid growth, and early maturation. Small changes in environmental conditions have significant effects on life history characteristics, such as the timing and size at hatching, growth rates, longevity, and size and age at maturation. For cephalopods that live for less than a year annual environmental cues are not used to synchronise life events (e.g. timing of gametogenesis and spawning), instead individuals grow and reproduce throughout the majority of the year. As a result cephalopod populations are typically made up of multiple cohorts with differing life history characteristics, making it difficult to establish generalizations about the structure and dynamics of populations both within and among species. To date, both laboratory and field based studies have been useful in understanding some of the mechanisms responsible for the plastic characteristics that has allowed cephalopods to be so successful in response to the variable environmental conditions. The aim of this research was to use a small cephalopod species with a short life span, Euprymna tasmanica, to explore the relationships between growth and reproductive output from laboratory held populations alongside growth estimates from the field to explain some of the mechanisms that may be responsible for the seasonal variability found within populations of Euprymna tasmanica in northern Tasmania. In captivity E. tasmanica hatched at approximately 0.3g and the percent increase in body mass per day followed a biphasic growth pattern, starting with a fast exponential growth model followed by slower almost linear growth. Changes in temperature and ration had significant impact on the growth and reproductive characteristics, however in most the influence of temperature and ration were independent of each other. During the initial stage of growth higher water temperature was seen to significantly increase the rate of growth, while greater rations increased growth during the late phase of growth. An elevation of temperature of 5°C over the entire lifespan decreased the age and weight at first egg deposition by 16 days, and 0.89g respectively, and halved the average egg size. Females fed at a greater ration were 12 days younger at first egg deposition and produced eggs that were on average 25% larger; however, their size at first batch deposition (6.23g ± 0.19) was no different from those females fed a smaller ration. Only the number of eggs in the batch was affected by the interaction of temperature and ration, with individuals experiencing a combination of high temperature and ration producing average batch sizes of around 128 eggs which was approximately twice the size of the other treatments. Within the population of E. tasmanica sampled, it was apparent that the temperatures experienced had a significant effect on the growth, maturity and reproductive condition. Growth in…

Subjects/Keywords: cephalopod growth; reproduction; population dynamics

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APA (6^th Edition):

Kuipers, M. (2012). Growth and reproduction of a short-lived cephalopod : mechanisms that facilitate population success in a highly variable environment. (Thesis). University of Tasmania. Retrieved from https://eprints.utas.edu.au/15927/2/whole-kuipers-2012.pdf

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):

Kuipers, MR. “Growth and reproduction of a short-lived cephalopod : mechanisms that facilitate population success in a highly variable environment.” 2012. Thesis, University of Tasmania. Accessed April 11, 2021. https://eprints.utas.edu.au/15927/2/whole-kuipers-2012.pdf.

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

MLA Handbook (7^th Edition):

Kuipers, MR. “Growth and reproduction of a short-lived cephalopod : mechanisms that facilitate population success in a highly variable environment.” 2012. Web. 11 Apr 2021.

Vancouver:

Kuipers M. Growth and reproduction of a short-lived cephalopod : mechanisms that facilitate population success in a highly variable environment. [Internet] [Thesis]. University of Tasmania; 2012. [cited 2021 Apr 11]. Available from: https://eprints.utas.edu.au/15927/2/whole-kuipers-2012.pdf.

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

Council of Science Editors:

Kuipers M. Growth and reproduction of a short-lived cephalopod : mechanisms that facilitate population success in a highly variable environment. [Thesis]. University of Tasmania; 2012. Available from: https://eprints.utas.edu.au/15927/2/whole-kuipers-2012.pdf

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

Texas A&M University

4. Sun, Mengmeng. Regional Climate Effect on Population Abundance of Major Duck Species in Interior Plains of Canada.

Degree: MS, Wildlife and Fisheries Sciences, 2013, Texas A&M University

URL: http://hdl.handle.net/1969.1/149518

► Population dynamics of ducks is a complex process influenced by both biotic and abiotic factors, and good understanding about the mechanisms behind this process is… (more)

Subjects/Keywords: climate; population dynamics; duck

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APA (6^th Edition):

Sun, M. (2013). Regional Climate Effect on Population Abundance of Major Duck Species in Interior Plains of Canada. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/149518

Chicago Manual of Style (16^th Edition):

Sun, Mengmeng. “Regional Climate Effect on Population Abundance of Major Duck Species in Interior Plains of Canada.” 2013. Masters Thesis, Texas A&M University. Accessed April 11, 2021. http://hdl.handle.net/1969.1/149518.

MLA Handbook (7^th Edition):

Sun, Mengmeng. “Regional Climate Effect on Population Abundance of Major Duck Species in Interior Plains of Canada.” 2013. Web. 11 Apr 2021.

Vancouver:

Sun M. Regional Climate Effect on Population Abundance of Major Duck Species in Interior Plains of Canada. [Internet] [Masters thesis]. Texas A&M University; 2013. [cited 2021 Apr 11]. Available from: http://hdl.handle.net/1969.1/149518.

Council of Science Editors:

Sun M. Regional Climate Effect on Population Abundance of Major Duck Species in Interior Plains of Canada. [Masters Thesis]. Texas A&M University; 2013. Available from: http://hdl.handle.net/1969.1/149518

Rice University

5. Schultz, Emily. Population dynamics in a changing world: the consequences of environmental variation for species with complex life histories.

Degree: PhD, Natural Sciences, 2019, Rice University

URL: http://hdl.handle.net/1911/105348

► Despite increasing awareness of the importance of environmental variation in ecological systems, there are still many open questions about how variation affects population dynamics. I… (more)

▼ Despite increasing awareness of the importance of environmental variation in ecological systems, there are still many open questions about how variation affects population dynamics. I studied several aspects of environmental variation and the roles it plays in population dynamics, particularly for species with complex life histories. My first chapter addresses spatial variation in the effects of native insect herbivores on the population dynamics of an invasive thistle, Cirsium vulgare. It shows that while the underlying population dynamics of the thistle were predicted to vary substantially across space in the absence of herbivores, native insects were able to drive thistle populations to negative growth rates across the study region. My first chapter treats populations as isolated entities, with no dispersal between different populations. However, there is often dispersal between disjoint populations, creating metapopulations, isolated population patches connected by dispersal. Therefore, my second chapter incorporates multiple populations and dispersal to test for the importance of within-patch heterogeneity for metapopulation persistence, using a whitebark pine metapopulation as a model. I found that for whitebark pine, within-patch heterogeneity had minimal effects on metapopulation, and the metapopulation was predicted to be stable with or without the observed within-patch heterogeneity. My final chapter also used the whitebark pine system to test for shifts in elevation distributions due to climate change. Whitebark pine populations were predicted to be buffered against climate change because they do not fill their climatically-determined fundamental niche, and they can therefore tolerate warmer and drier climates than they experience in their current range. Thus, environmental variation can play an important role in population dynamics, but different sources of variation might be important at different scales of organization. Advisors/Committee Members: Miller, Tom (advisor).

Subjects/Keywords: Population dynamics; Demography; Environmental variation

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

APA (6^th Edition):

Schultz, E. (2019). Population dynamics in a changing world: the consequences of environmental variation for species with complex life histories. (Doctoral Dissertation). Rice University. Retrieved from http://hdl.handle.net/1911/105348

Chicago Manual of Style (16^th Edition):

Schultz, Emily. “Population dynamics in a changing world: the consequences of environmental variation for species with complex life histories.” 2019. Doctoral Dissertation, Rice University. Accessed April 11, 2021. http://hdl.handle.net/1911/105348.

MLA Handbook (7^th Edition):

Schultz, Emily. “Population dynamics in a changing world: the consequences of environmental variation for species with complex life histories.” 2019. Web. 11 Apr 2021.

Vancouver:

Schultz E. Population dynamics in a changing world: the consequences of environmental variation for species with complex life histories. [Internet] [Doctoral dissertation]. Rice University; 2019. [cited 2021 Apr 11]. Available from: http://hdl.handle.net/1911/105348.

Council of Science Editors:

Schultz E. Population dynamics in a changing world: the consequences of environmental variation for species with complex life histories. [Doctoral Dissertation]. Rice University; 2019. Available from: http://hdl.handle.net/1911/105348

Victoria University of Wellington

6. Neilson, Conor Stewart Bruce. There and back again: Spatial and temporal variation in the recruitment dynamics of an amphidromous fish.

Degree: 2016, Victoria University of Wellington

URL: http://hdl.handle.net/10063/6225

► A primary goal of ecology is to identify the factors underlying recruitment variability, and how they may shape population dynamics. Recruitment is driven by the… (more)

▼ A primary goal of ecology is to identify the factors underlying recruitment variability, and how they may shape population dynamics. Recruitment is driven by the input of new individuals into a population. However, these individuals often show high diversity in phenotypic traits and life histories, and the consequences of this variation are poorly understood. Phenotypic variation is widespread among the early life stages of fish, and this variation may be influenced by events occurring across multiple life stages. While many studies have investigated phenotypic variation and its effect on population dynamics, comparatively few studies use an integrated approach that evaluates patterns and processes across multiple life history stages. Here I focus on a native amphidromous fish, Galaxias maculatus, and I explore patterns and consequences of phenotypic variation during larval stages, migratory stages, and post-settlement stages of this fish. I explore variability in phenotypes and early life history traits of G. maculatus through both space and time. I use metrics derived from body size and otolith-based demographic reconstructions to quantify potentially important early life history traits. I found that cohorts of juvenile fish sampled later in the year were comprised of individuals that were older, smaller, and grew more slowly relative to fish sampled earlier in the year. I also found that two sampled sites (the Hutt River and the Wainuiomata River) showed different temporal trends, despite their close geographical proximity. I then investigated whether phenotype was related to mortality. I used otolith-based traits to characterise larval ‘quality’ for individual fish. I then calculated the average larval quality for discrete cohorts of fish, and used catch-curve analysis to estimate mortality rates for these cohorts. I investigated the overall relationship between quality and mortality, and compared the trend between two sites. My results indicate that phenotype and mortality were not significantly correlated. However, this inference may be limited by low statistical power; the non-significant trends suggest that the relationship might be negative (i.e., larvae of higher quality tend to have lower rates of mortality). This trend is typical of systems where population expansion is limited by food rather than predators. I then investigated whether phenotypic traits in the juvenile cohorts were correlated with traits in adult cohorts. I resampled the focal populations ~6 months after sampling the juvenile stages (i.e., targeting fish from sampled cohorts that had survived to adulthood), and I used data from otoliths to reconstruct life history traits (hatch dates and growth histories). I compared adult life history traits to the traits of discrete juvenile cohorts. My results suggest that fish that survived to adulthood had comparatively slower growth rates (reconstructed for a period of larval/juvenile growth) relative to the sampled juvenile cohorts (where growth rate was estimated for the same period in their… Advisors/Committee Members: Shima, Jeffrey.

Subjects/Keywords: Otolith; Recruitment; Population dynamics

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APA (6^th Edition):

Neilson, C. S. B. (2016). There and back again: Spatial and temporal variation in the recruitment dynamics of an amphidromous fish. (Masters Thesis). Victoria University of Wellington. Retrieved from http://hdl.handle.net/10063/6225

Chicago Manual of Style (16^th Edition):

Neilson, Conor Stewart Bruce. “There and back again: Spatial and temporal variation in the recruitment dynamics of an amphidromous fish.” 2016. Masters Thesis, Victoria University of Wellington. Accessed April 11, 2021. http://hdl.handle.net/10063/6225.

MLA Handbook (7^th Edition):

Neilson, Conor Stewart Bruce. “There and back again: Spatial and temporal variation in the recruitment dynamics of an amphidromous fish.” 2016. Web. 11 Apr 2021.

Vancouver:

Neilson CSB. There and back again: Spatial and temporal variation in the recruitment dynamics of an amphidromous fish. [Internet] [Masters thesis]. Victoria University of Wellington; 2016. [cited 2021 Apr 11]. Available from: http://hdl.handle.net/10063/6225.

Council of Science Editors:

Neilson CSB. There and back again: Spatial and temporal variation in the recruitment dynamics of an amphidromous fish. [Masters Thesis]. Victoria University of Wellington; 2016. Available from: http://hdl.handle.net/10063/6225

Victoria University of Wellington

7. Fischer, Johannes. Integrated conservation of the Whenua Hou Diving Petrel.

Degree: 2020, Victoria University of Wellington

URL: http://hdl.handle.net/10063/9409

► Seabirds are one of the most threatened taxa on the planet. These species are also considered ecosystem engineers. Therefore, seabirds are of particular conservation interest.… (more)

▼ Seabirds are one of the most threatened taxa on the planet. These species are also considered ecosystem engineers. Therefore, seabirds are of particular conservation interest. One of the most threatened seabirds is the critically endangered Whenua Hou Diving Petrel (Pelecanoides whenuahouensis; WHDP). The WHDP is restricted to a minute (0.018 km2) breeding colony on a single island — Whenua Hou (Codfish Island), Aotearoa (New Zealand). The WHDP population was estimated at 150 adults in 2005. The WHDP is threatened by storms and storm surges, which erode its breeding habitat (fragile foredunes), and potentially by competition for burrows with congenerics. I aimed to inform suitable conservation strategies for the WHDP. I first quantified the efficacy of past conservation actions (eradications of invasive predators). I compiled burrow counts across four decades to estimate and compare population growth before and after predator eradications. I then investigated offshore threats using tracking data to quantify WHDP offshore distribution, behaviour, and overlap with commercial fishing efforts. Subsequently, I estimated the potential impact and success of WHDP translocations. Specifically, I combined capture-recapture, nest-monitoring, and count data in an integrated population model (IPM) to predict the impact of harvesting chicks for translocations on the source population and to project the establishment of a second population. I then informed future translocation protocols using nest-monitoring data to quantify nest survival and breeding biology. Finally, I tested if WHDP presence had a positive influence on unrelated species groups. I counted two skink species at sites with and without burrows and used occupancy modelling to quantify the influence WHDP burrows had on skink occurrence. Estimates of population growth before and after predator eradications illustrated that WHDP population growth remained comparatively low and unaffected by this conservation strategy. Therefore, additional interventions are required. WHDP tracking revealed that the non-breeding distribution did not overlap with commercial fishing efforts. However, considerable fishing efforts were present within the breeding distribution. Despite these findings, onshore threats remain present and conservation strategies aimed at addressing terrestrial threats may be more feasible. Results from my IPM showed that translocations could successfully establish a second WHDP population without impacting the source excessively, provided translocation cohorts remain small and translocations are repeated over long time periods (5-10 years). Nest survival was not clearly influenced by interannual variation, distance to sea, and intra- or interspecific competition. Furthermore, I informed future translocation protocols by identifying the preferred harvest window, measurements of ideal translocation candidates, and feeding regimes. Occurrence of one skink species was 114% higher at sites with burrows than at sites without, suggesting that WHDP presence benefits… Advisors/Committee Members: Wittmer, Heiko, Armstrong, Doug, Debski, Igor.

Subjects/Keywords: Conservation Biology; Seabirds; Population dynamics

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APA (6^th Edition):

Fischer, J. (2020). Integrated conservation of the Whenua Hou Diving Petrel. (Doctoral Dissertation). Victoria University of Wellington. Retrieved from http://hdl.handle.net/10063/9409

Chicago Manual of Style (16^th Edition):

Fischer, Johannes. “Integrated conservation of the Whenua Hou Diving Petrel.” 2020. Doctoral Dissertation, Victoria University of Wellington. Accessed April 11, 2021. http://hdl.handle.net/10063/9409.

MLA Handbook (7^th Edition):

Fischer, Johannes. “Integrated conservation of the Whenua Hou Diving Petrel.” 2020. Web. 11 Apr 2021.

Vancouver:

Fischer J. Integrated conservation of the Whenua Hou Diving Petrel. [Internet] [Doctoral dissertation]. Victoria University of Wellington; 2020. [cited 2021 Apr 11]. Available from: http://hdl.handle.net/10063/9409.

Council of Science Editors:

Fischer J. Integrated conservation of the Whenua Hou Diving Petrel. [Doctoral Dissertation]. Victoria University of Wellington; 2020. Available from: http://hdl.handle.net/10063/9409

University of Illinois – Urbana-Champaign

8. Livesay, Michael Richard. Stable configurations for population and social dynamics.

Degree: PhD, Mathematics, 2019, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/104735

► This dissertation investigates global and local minima in two models: the Lotka – Volterra model for population dynamics and a tractable polarized opinion social dynamic model.… (more)

Subjects/Keywords: population dynamics; opinion dynamics; local stability

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APA (6^th Edition):

Livesay, M. R. (2019). Stable configurations for population and social dynamics. (Doctoral Dissertation). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/104735

Chicago Manual of Style (16^th Edition):

Livesay, Michael Richard. “Stable configurations for population and social dynamics.” 2019. Doctoral Dissertation, University of Illinois – Urbana-Champaign. Accessed April 11, 2021. http://hdl.handle.net/2142/104735.

MLA Handbook (7^th Edition):

Livesay, Michael Richard. “Stable configurations for population and social dynamics.” 2019. Web. 11 Apr 2021.

Vancouver:

Livesay MR. Stable configurations for population and social dynamics. [Internet] [Doctoral dissertation]. University of Illinois – Urbana-Champaign; 2019. [cited 2021 Apr 11]. Available from: http://hdl.handle.net/2142/104735.

Council of Science Editors:

Livesay MR. Stable configurations for population and social dynamics. [Doctoral Dissertation]. University of Illinois – Urbana-Champaign; 2019. Available from: http://hdl.handle.net/2142/104735

Montana Tech

9. Ellis, Martha. Transient dynamics in plant population models.

Degree: PhD, 2013, Montana Tech

URL: https://scholarworks.umt.edu/etd/1138

► Transient dynamics describe short-term responses to unstable conditions in population models. Although the theoretical potential of these short-term effects to change interpretation of model behavior… (more)

▼ Transient dynamics describe short-term responses to unstable conditions in population models. Although the theoretical potential of these short-term effects to change interpretation of model behavior has been demonstrated, it is unclear whether transient analyses will be relevant or useful in management applications. This dissertation explores the role of transient dynamics in plant populations based on long-term demographic data. Based on a survey of modeling results for plant populations in the literature, I found that theoretical indices of transient behavior greatly overemphasized the role of transient responses for the populations for which data were available. Transient indices were indicative of the variation in distance from asymptotic conditions that the models experienced; however, empirical data on long-term environmental variability was substantially closer to asymptotic conditions than theoretical measures. However, transient responses do play an important role in the variability that populations experience. Across nine perennial plant species, transient responses contributed more on average to variability in annual population growth rates than variation in vital rates alone. I also found evidence that transient responses may at times have a buffering effect on the variation that populations experience, by pushing the population in the opposite direction as demographic variation. These results demonstrate the importance of viewing transient dynamics and demographic variation as interrelated processes, with implications for both understanding population dynamics and in management applications. Finally, I explored the role of transient dynamics to assess the non-target impacts of herbicide use on population dynamics of Balsamorhiza sagittata, a native perennial forb in Montana grasslands. Using long-term monitoring data, I found that stage-specific effects of herbicide on Balsamroot demography, combined with episodic recruitment, lead to highly variable population demographic structures during the 10 year study period. My analyses suggest that timing herbicide use based on current population stage structures and mitigating changes to stage structure after spraying could help to minimize long-term impacts of herbicide use on long-lived perennial forbs like Balsamroot. More generally, my analysis demonstrated how information on current population status and specific timescales can be used to better inform management.

Subjects/Keywords: conservation; matrix population models; plant population dynamics; transient dynamics

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APA (6^th Edition):

Ellis, M. (2013). Transient dynamics in plant population models. (Doctoral Dissertation). Montana Tech. Retrieved from https://scholarworks.umt.edu/etd/1138

Chicago Manual of Style (16^th Edition):

Ellis, Martha. “Transient dynamics in plant population models.” 2013. Doctoral Dissertation, Montana Tech. Accessed April 11, 2021. https://scholarworks.umt.edu/etd/1138.

MLA Handbook (7^th Edition):

Ellis, Martha. “Transient dynamics in plant population models.” 2013. Web. 11 Apr 2021.

Vancouver:

Ellis M. Transient dynamics in plant population models. [Internet] [Doctoral dissertation]. Montana Tech; 2013. [cited 2021 Apr 11]. Available from: https://scholarworks.umt.edu/etd/1138.

Council of Science Editors:

Ellis M. Transient dynamics in plant population models. [Doctoral Dissertation]. Montana Tech; 2013. Available from: https://scholarworks.umt.edu/etd/1138

Dalhousie University

10. Campbell, Véronik. Dynamics of Species Extinction and Recovery in Multi-Trophic Aquatic Systems.

Degree: MS, Department of Biology, 2010, Dalhousie University

URL: http://hdl.handle.net/10222/13106

► The current rate of species extinction is higher than at any other time in Earth’s history. Despite our understanding of the causes and consequences of… (more)

Subjects/Keywords: Extinction; recovery; population dynamics; collapse; extinction dynamics; recovery dynamics; zooplankton; microcosm

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APA (6^th Edition):

Campbell, V. (2010). Dynamics of Species Extinction and Recovery in Multi-Trophic Aquatic Systems. (Masters Thesis). Dalhousie University. Retrieved from http://hdl.handle.net/10222/13106

Chicago Manual of Style (16^th Edition):

Campbell, Véronik. “Dynamics of Species Extinction and Recovery in Multi-Trophic Aquatic Systems.” 2010. Masters Thesis, Dalhousie University. Accessed April 11, 2021. http://hdl.handle.net/10222/13106.

MLA Handbook (7^th Edition):

Campbell, Véronik. “Dynamics of Species Extinction and Recovery in Multi-Trophic Aquatic Systems.” 2010. Web. 11 Apr 2021.

Vancouver:

Campbell V. Dynamics of Species Extinction and Recovery in Multi-Trophic Aquatic Systems. [Internet] [Masters thesis]. Dalhousie University; 2010. [cited 2021 Apr 11]. Available from: http://hdl.handle.net/10222/13106.

Council of Science Editors:

Campbell V. Dynamics of Species Extinction and Recovery in Multi-Trophic Aquatic Systems. [Masters Thesis]. Dalhousie University; 2010. Available from: http://hdl.handle.net/10222/13106

Mississippi State University

11. Shamaskin, Andrew Challen. Evaluating multisystem length limits for inland fisheries.

Degree: MS, Wildlife, Fisheries & Aquaculture, 2018, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-03162018-144239/ ;

► Multisystem length limits are a popular output control implemented to regulate harvest of many gamefishes. Evaluating the direct effects of length limits is crucial in… (more)

Subjects/Keywords: decision analysis; fisheries management; population dynamics

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APA (6^th Edition):

Shamaskin, A. C. (2018). Evaluating multisystem length limits for inland fisheries. (Masters Thesis). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-03162018-144239/ ;

Chicago Manual of Style (16^th Edition):

Shamaskin, Andrew Challen. “Evaluating multisystem length limits for inland fisheries.” 2018. Masters Thesis, Mississippi State University. Accessed April 11, 2021. http://sun.library.msstate.edu/ETD-db/theses/available/etd-03162018-144239/ ;.

MLA Handbook (7^th Edition):

Shamaskin, Andrew Challen. “Evaluating multisystem length limits for inland fisheries.” 2018. Web. 11 Apr 2021.

Vancouver:

Shamaskin AC. Evaluating multisystem length limits for inland fisheries. [Internet] [Masters thesis]. Mississippi State University; 2018. [cited 2021 Apr 11]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-03162018-144239/ ;.

Council of Science Editors:

Shamaskin AC. Evaluating multisystem length limits for inland fisheries. [Masters Thesis]. Mississippi State University; 2018. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-03162018-144239/ ;

Cornell University

12. Dalziel, Benjamin. The Influence Of Collective Animal Movement On Population Dynamics.

Degree: PhD, Ecology, 2014, Cornell University

URL: http://hdl.handle.net/1813/37026

► Many populations exhibit collective behavior, where interactions among nearby individuals scale up to cause emergent patterns in the behavior of groups, as in the coordinated… (more)

▼ Many populations exhibit collective behavior, where interactions among nearby individuals scale up to cause emergent patterns in the behavior of groups, as in the coordinated movement of a flock of birds or a school of fish. Populations influenced by collective behavior violate the assumption of mass action that underlies most ecological models, in which individuals are viewed as statistically independent. However, the ecological significance of collective behavior is not well understood, because studies have been limited to populations where high throughput ethological data is available, such as in the laboratory or in computer simulations. This dissertation tests for the signal of collective behavior in ecological data-data on the distribution patterns of organisms collected on a coarser spatial and temporal scale than the underlying processes-and examines the influence of collective behavior on population dynamics. Data on the locations of migratory caribou (collected every five days by satellite tracking collars) are shown to be generated by two distinct processes. The first process creates broad-scale spatiotemporal order in movement patterns, and is likely driven by seasonally and spatially fluctuating environmental and physiological cues. The second process creates finer-scale order that is likely due to behavioral interactions among nearby individuals. The strength of alignment in the velocities of nearby individuals varies systematically with time of year, suggesting that collective behavior can be a dynamic property of migratory populations. The dissertation then considers collective mobility patterns in humans, analyzing census data on the commuting patterns of workers in Canadian cities. The level of order in commuting patterns varies systematically among cities. In particular, in some cities a disproportionate number of workers travel to work in a few focal locations. Simulations of the spread of a respiratory infection in each city predict differences among cities in the risk of an epidemic, due to systematic variation in the level of order in the commuting patterns of workers. In particular, larger cities tend to be more highly organized and, as a result, have a disproportionately higher probability of sparking an epidemic. The dissertation then explores the role of large cities in supporting the emergence of a new strain of influenza in dogs. The analysis combines demographic data on animal shelters in the United States, molecular data from the pathogen and seroprevalence estimates from the literature to show that large animal shelters in major metropolitan areas function as endemic reservoirs for the virus, facilitating sporadic outbreaks in the wider population. In sum the dissertation research shows that collective behavior can sometimes be detected and characterized in ecological data without recourse to fine-scale behavioral observations, and that collective behavior can significantly alter population dynamics at broad spatial and temporal scales. Advisors/Committee Members: Ellner, Stephen Paul (chair), Parrish, Colin Ross (committee member), Hooker, Giles J. (committee member), Geber, Monica Ann (committee member).

Subjects/Keywords: collective behavior; population dynamics; epidemic model

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

APA (6^th Edition):

Dalziel, B. (2014). The Influence Of Collective Animal Movement On Population Dynamics. (Doctoral Dissertation). Cornell University. Retrieved from http://hdl.handle.net/1813/37026

Chicago Manual of Style (16^th Edition):

Dalziel, Benjamin. “The Influence Of Collective Animal Movement On Population Dynamics.” 2014. Doctoral Dissertation, Cornell University. Accessed April 11, 2021. http://hdl.handle.net/1813/37026.

MLA Handbook (7^th Edition):

Dalziel, Benjamin. “The Influence Of Collective Animal Movement On Population Dynamics.” 2014. Web. 11 Apr 2021.

Vancouver:

Dalziel B. The Influence Of Collective Animal Movement On Population Dynamics. [Internet] [Doctoral dissertation]. Cornell University; 2014. [cited 2021 Apr 11]. Available from: http://hdl.handle.net/1813/37026.

Council of Science Editors:

Dalziel B. The Influence Of Collective Animal Movement On Population Dynamics. [Doctoral Dissertation]. Cornell University; 2014. Available from: http://hdl.handle.net/1813/37026

McMaster University

13. Szymkiewicz, Rachelle. Pseudomonas aeruginosa Prairie Epidemic Strain Population Dynamics and Evolution of Disease in Cystic Fibrosis Airways of Adult Patients.

Degree: MSc, 2018, McMaster University

URL: http://hdl.handle.net/11375/24279

►

The lower airways of patients with chronic airway diseases including cystic fibrosis (CF) are colonized by diverse communities of microorganisms. Over-time the airways of some… (more)

▼

The lower airways of patients with chronic airway diseases including cystic fibrosis (CF) are colonized by diverse communities of microorganisms. Over-time the airways of some 60% of CF patients become permanently colonized and dominated by Pseudomonas aeruginosa. Chronic infection of P. aeruginosa has been associated with a decline in pulmonary function, worse prognosis, and eventual patient mortality. Although P. aeruginosa evolves within the CF airways resulting in complex populations, the mechanism by which these complex populations contribute to disease progression is not well understood. Here we show diversity among isolates by observed changes in genome sequences of a strain of P. aeruginosa, known as Prairie Epidemic Strain (PES). Using whole genome sequencing and comparative genomics we identified a large core genome across 195 PES isolates from 57 CF patients of the Calgary Adult Cystic Fibrosis Clinic (CACFC) where 88% of the pangenome was categorized as core genes. Single nucleotide polymorphism (SNPs) mutations were shown to be the largest contributor of diversity at the nucleotide level compared to other polymorphism types consisting of 87% of the total polymorphisms present across the 195 PES isolates. CRISPR arrays and mobile elements such as prophage and plasmids demonstrate this strain of P. aeruginosa was stable over 30 years. In a second aim, I show variation in the populations of P. aeruginosa across an exacerbation event further highlighting the complexity of the lung bacterial community. Distinct populations of P. aeruginosa at the onset and resolution of an exacerbation within a single CF patient were identified by SNPs. These results a model where adaptive radiation as well as natural mutations contribute to the heterogeneity and diversification within populations of P. aeruginosa in CF patients. Understanding the evolution and population structure of PES through the identification of important genes and mutations through the clinical course of an exacerbation can aid in identifying new targets for patient treatment of P. aeruginosa in CF.

Thesis

Master of Science (MSc)

Cystic fibrosis is a life-threatening disease characterized by cycles of stability and respiratory illness. Bacterial species within the lungs of these patients are the main contributor to disease progression. I investigated a specific transmissible epidemic strain, Pseudomonas aeruginosa Prairie Epidemic Strain, using a unique collection of samples provided by collaborators at the adult cystic fibrosis clinic in Calgary. Using these samples, I first explored the differences between patients over a period of 34 years. I hypothesized that similar changes in genome sequences will be observed in multiple patients with a possible commonality in disease progression. Second, I explored the role this bacterial pathogen may play in cycles of respiratory illness. I hypothesize that a specific bacterial subpopulation could initiate these cycles and be identified by changes at the genome…

Advisors/Committee Members: Surette, Michael, Biochemistry and Biomedical Sciences.

Subjects/Keywords: Cystic Fibrosis; Comparative genomics; Population dynamics

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

APA (6^th Edition):

Szymkiewicz, R. (2018). Pseudomonas aeruginosa Prairie Epidemic Strain Population Dynamics and Evolution of Disease in Cystic Fibrosis Airways of Adult Patients. (Masters Thesis). McMaster University. Retrieved from http://hdl.handle.net/11375/24279

Chicago Manual of Style (16^th Edition):

Szymkiewicz, Rachelle. “Pseudomonas aeruginosa Prairie Epidemic Strain Population Dynamics and Evolution of Disease in Cystic Fibrosis Airways of Adult Patients.” 2018. Masters Thesis, McMaster University. Accessed April 11, 2021. http://hdl.handle.net/11375/24279.

MLA Handbook (7^th Edition):

Szymkiewicz, Rachelle. “Pseudomonas aeruginosa Prairie Epidemic Strain Population Dynamics and Evolution of Disease in Cystic Fibrosis Airways of Adult Patients.” 2018. Web. 11 Apr 2021.

Vancouver:

Szymkiewicz R. Pseudomonas aeruginosa Prairie Epidemic Strain Population Dynamics and Evolution of Disease in Cystic Fibrosis Airways of Adult Patients. [Internet] [Masters thesis]. McMaster University; 2018. [cited 2021 Apr 11]. Available from: http://hdl.handle.net/11375/24279.

Council of Science Editors:

Szymkiewicz R. Pseudomonas aeruginosa Prairie Epidemic Strain Population Dynamics and Evolution of Disease in Cystic Fibrosis Airways of Adult Patients. [Masters Thesis]. McMaster University; 2018. Available from: http://hdl.handle.net/11375/24279

Penn State University

14. Fuller, Zach Lewis. Uncovering the Dynamics of Natural Populations: Genomic Studies in Drosophila pseudoobscura & Apis mellifera.

Degree: 2017, Penn State University

URL: https://submit-etda.libraries.psu.edu/catalog/13758zlf105

► Genetic variation can exist in a number of forms, ranging from single nucleotide changes falling in regions with no impact on fitness to large-scale structural… (more)

▼ Genetic variation can exist in a number of forms, ranging from single nucleotide changes falling in regions with no impact on fitness to large-scale structural rearrangements of chromosomes. A variety of evolutionary forces, including selection, mutation, recombination and drift, shape the structure of this genetic variation and the resulting molecular pattern can be used to infer the evolutionary dynamics of natural populations. Questions regarding the origin and maintenance of genetic traits in natural populations have historically been a central focus to the field of evolutionary biology. Traditionally however, researchers have been limited by the amount, breadth and resolution of genetic data available to address theoretical models of how variation is expected to change over time. Recent advances in high throughput sequencing technologies yield a powerful method to inexpensively generate sequence data across entire genomes, yet at the resolution of individual nucleotides. Here, a high throughput sequencing approach is used to investigate genetic variation in the model organism Drosophila pseudoobscura and the non-model organism Apis mellifera. In this work, I find that stabilizing selection acts on synonymous codon usage and shapes the nucleotide composition of gens in D. pseudoobscura. Furthermore, I develop a series of publically available tools to perform tests of positive selection in A. mellifera and identify several genes with signatures of adaptive evolution. Additionally, I demonstrate chromosomal inversions in D. pseudoobscura are likely favored because of their indirect effect of suppressed recombination. Lastly, I suggest a novel role for segregation distortion in the process of speciation and find evidence for cross-species introgression enabled by an association with a selfish genetic element. Together, this work reveals the complex interaction of different evolutionary forces that influence the structure of genetic variation across genomes and populations. Advisors/Committee Members: Stephen Schaeffer, Dissertation Advisor/Co-Advisor, Kateryna Makova, Committee Chair/Co-Chair, Paul Medvedev, Committee Member, Christina Grozinger, Committee Member, Christina Grozinger, Outside Member.

Subjects/Keywords: Genomics; drosophila; apis mellifera; selection; population dynamics

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

APA (6^th Edition):

Fuller, Z. L. (2017). Uncovering the Dynamics of Natural Populations: Genomic Studies in Drosophila pseudoobscura & Apis mellifera. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/13758zlf105

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):

Fuller, Zach Lewis. “Uncovering the Dynamics of Natural Populations: Genomic Studies in Drosophila pseudoobscura & Apis mellifera.” 2017. Thesis, Penn State University. Accessed April 11, 2021. https://submit-etda.libraries.psu.edu/catalog/13758zlf105.

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

MLA Handbook (7^th Edition):

Fuller, Zach Lewis. “Uncovering the Dynamics of Natural Populations: Genomic Studies in Drosophila pseudoobscura & Apis mellifera.” 2017. Web. 11 Apr 2021.

Vancouver:

Fuller ZL. Uncovering the Dynamics of Natural Populations: Genomic Studies in Drosophila pseudoobscura & Apis mellifera. [Internet] [Thesis]. Penn State University; 2017. [cited 2021 Apr 11]. Available from: https://submit-etda.libraries.psu.edu/catalog/13758zlf105.

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

Council of Science Editors:

Fuller ZL. Uncovering the Dynamics of Natural Populations: Genomic Studies in Drosophila pseudoobscura & Apis mellifera. [Thesis]. Penn State University; 2017. Available from: https://submit-etda.libraries.psu.edu/catalog/13758zlf105

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

Univerzitet u Beogradu

15. Jaćimović, Milica Lj., 1982-. Populaciona dinamika i ekotoksikologija crnog američkog patuljastog soma (Ameiurus melas Rafinesque, 1820) u Savskom jezeru.

Degree: Biološki fakultet, 2016, Univerzitet u Beogradu

URL: https://fedorabg.bg.ac.rs/fedora/get/o:10958/bdef:Content/get

►

Ekologija - Ekologija riba / Ecology - Fish Ecology

Crni američki patuljasti som (Ameiurus melas Rafinesque, 1820) je najzastupljenija i najuspešnija alohtona vrsta ribe koja… (more)

▼

Ekologija - Ekologija riba / Ecology - Fish Ecology

Crni američki patuljasti som (Ameiurus melas Rafinesque, 1820) je najzastupljenija i najuspešnija alohtona vrsta ribe koja naseljava kopnene vode Evrope. Istraživanja koja su sprovedena u proteklih nekoliko godina ukazuju na to da je ovo dominantna invazivna vrsta i u mnogim kopnenim vodama u Srbiji. Cilj istraživanja se odnosio na ispitivanje populacionih atributa patuljastog soma u Savskom jezeru, kao i na bioakumulaciju teških metala i mikroelemenata u različitim tkivima. Terenska istraživanja vršena su u periodu od 2009. do 2012. godine. Jedinke su uzorkovane jednom mesečno, četiri dana za redom. Laboratorijska obrada prikupljenih uzoraka obuhvatila je merenje totalne dužine tela (TL) i ukupne težine tela ulovljenih primeraka. Nakon disekcije jedinki merena je težina tela bez utrobe, kao i masa jetre i gonada.Struktura populacije utvrđena je kombinovanjem dve metode – analizom starosti jedinki i analizom dužinskih frekvencija. Starost jedinki određena je takođe uz pomoć dve metode – očitavanjem naraštajnih zona otolita i Batačarija metodom. Analiza uzrasne strukture populacije pokazala je prisustvo pet uzrasnih kategorija: od 0+ do 4+. Klasa 1+ bila je najdominatnija uzrasna klasa, kako po godinama, tako i po sezonama uzorkovanja. Prosečna totalna dužina jedinki iznosila je 13,3 cm, a prosečna težina 38,26 g. Prosečna relativna težina jedinki u Savskom jezeru, u celokupnom uzorku, iznosila je 84,78 ± 1,09 g. Utvrđeno je prisustvo ukupno 8 kohorti. Na osnovu analize dužinsko-težinskih odnosa izračunate su i vrednosti faktora alometrije b koje su se kretale od 2,93 do 3,16, dok je vrednost ovog faktora u celom poduzorku iznosila 3,00. Analizom krive dužinsko-težinskog odnosa utvrđeno je da tačka infleksije ne postoji. Ribolovni napor (CPUE) je korišćen za analizu distribucije i relativne gustine jedinki, kako po staništima, tako i po godinama uzorkovanja i sezonama. Tokom 2009, 2010. i 2012. godine CPUE vrednosti varirale su od 0,4 ± 0,5 do 41,5 ± 22,1 jedinki po vrši po danu...

Advisors/Committee Members: Krpo-Ćetković, Jasmina, 1961-.

Subjects/Keywords: black bullhead; population dynamics; ecotoxicology; Sava Lake

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APA (6^th Edition):

Jaćimović, Milica Lj., 1. (2016). Populaciona dinamika i ekotoksikologija crnog američkog patuljastog soma (Ameiurus melas Rafinesque, 1820) u Savskom jezeru. (Thesis). Univerzitet u Beogradu. Retrieved from https://fedorabg.bg.ac.rs/fedora/get/o:10958/bdef:Content/get

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):

Jaćimović, Milica Lj., 1982-. “Populaciona dinamika i ekotoksikologija crnog američkog patuljastog soma (Ameiurus melas Rafinesque, 1820) u Savskom jezeru.” 2016. Thesis, Univerzitet u Beogradu. Accessed April 11, 2021. https://fedorabg.bg.ac.rs/fedora/get/o:10958/bdef:Content/get.

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

MLA Handbook (7^th Edition):

Jaćimović, Milica Lj., 1982-. “Populaciona dinamika i ekotoksikologija crnog američkog patuljastog soma (Ameiurus melas Rafinesque, 1820) u Savskom jezeru.” 2016. Web. 11 Apr 2021.

Vancouver:

Jaćimović, Milica Lj. 1. Populaciona dinamika i ekotoksikologija crnog američkog patuljastog soma (Ameiurus melas Rafinesque, 1820) u Savskom jezeru. [Internet] [Thesis]. Univerzitet u Beogradu; 2016. [cited 2021 Apr 11]. Available from: https://fedorabg.bg.ac.rs/fedora/get/o:10958/bdef:Content/get.

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

Council of Science Editors:

Jaćimović, Milica Lj. 1. Populaciona dinamika i ekotoksikologija crnog američkog patuljastog soma (Ameiurus melas Rafinesque, 1820) u Savskom jezeru. [Thesis]. Univerzitet u Beogradu; 2016. Available from: https://fedorabg.bg.ac.rs/fedora/get/o:10958/bdef:Content/get

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

University of Manchester

16. Parra Rojas, César. Intrinsic fluctuations in discrete and continuous time models.

Degree: PhD, 2017, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/intrinsic-fluctuations-in-discrete-and-continuous-time-models(d7006a2b-1496-44f2-8423-1f2fa72be1a5).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.728013

► This thesis explores the stochastic features of models of ecological systems in discrete and in continuous time. Our interest lies in models formulated at the… (more)

▼ This thesis explores the stochastic features of models of ecological systems in discrete and in continuous time. Our interest lies in models formulated at the microscale, from which a mesoscopic description can be derived. The stochasticity present in the models, constructed in this way, is intrinsic to the systems under consideration and stems from their finite size. We start by exploring a susceptible-infectious-recovered model for epidemic spread on a network. We are interested in the case where the connectivity, or degree, of the individuals is characterised by a very broad, or heterogeneous, distribution, and in the effects of stochasticity on the dynamics, which may depart wildly from that of a homogeneous population. The model at the mesoscale corresponds to a system of stochastic differential equations with a very large number of degrees of freedom which can be reduced to a two-dimensional model in its deterministic limit. We show how this reduction can be carried over to the stochastic case by exploiting a time-scale separation in the deterministic system and carrying out a fast-variable elimination. We use simulations to show that the temporal behaviour of the epidemic obtained from the reduced stochastic model yields reasonably good agreement with the microscopic model under the condition that the maximum allowed degree that individuals can have is not too close to the population size. This is illustrated using time series, phase diagrams and the distribution of epidemic sizes. The general mesoscopic theory used in continuous-time models has only very recently been developed for discrete-time systems in one variable. Here, we explore this one-dimensional theory and find that, in contrast to the continuous-time case, large jumps can occur between successive iterates of the process, and this translates at the mesoscale into the need for specifying `boundary' conditions everywhere outside of the system. We discuss these and how to implement them in the stochastic difference equation in order to obtain results which are consistent with the microscopic model. We then extend the theoretical framework to make it applicable to systems containing an arbitrary number of degrees of freedom. In addition, we extend a number of analytical results from the one-dimensional stochastic difference equation to arbitrary dimension, for the distribution of fluctuations around fixed points, cycles and quasi-periodic attractors of the corresponding deterministic map. We also derive new expressions, describing the autocorrelation functions of the fluctuations, as well as their power spectrum. From the latter, we characterise the appearance of noise-induced oscillations in systems of dimension greater than one, which have been previously observed in continuous-time systems and are known as quasi-cycles. Finally, we explore the ability of intrinsic noise to induce chaotic behaviour in the system for parameter values for which the deterministic map presents a non-chaotic attractor; we find that this is possible for periodic, but not…

Subjects/Keywords: 576.5; Stochastic processes; Population dynamics; Mathematical epidemiology

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APA (6^th Edition):

Parra Rojas, C. (2017). Intrinsic fluctuations in discrete and continuous time models. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/intrinsic-fluctuations-in-discrete-and-continuous-time-models(d7006a2b-1496-44f2-8423-1f2fa72be1a5).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.728013

Chicago Manual of Style (16^th Edition):

Parra Rojas, César. “Intrinsic fluctuations in discrete and continuous time models.” 2017. Doctoral Dissertation, University of Manchester. Accessed April 11, 2021. https://www.research.manchester.ac.uk/portal/en/theses/intrinsic-fluctuations-in-discrete-and-continuous-time-models(d7006a2b-1496-44f2-8423-1f2fa72be1a5).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.728013.

MLA Handbook (7^th Edition):

Parra Rojas, César. “Intrinsic fluctuations in discrete and continuous time models.” 2017. Web. 11 Apr 2021.

Vancouver:

Parra Rojas C. Intrinsic fluctuations in discrete and continuous time models. [Internet] [Doctoral dissertation]. University of Manchester; 2017. [cited 2021 Apr 11]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/intrinsic-fluctuations-in-discrete-and-continuous-time-models(d7006a2b-1496-44f2-8423-1f2fa72be1a5).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.728013.

Council of Science Editors:

Parra Rojas C. Intrinsic fluctuations in discrete and continuous time models. [Doctoral Dissertation]. University of Manchester; 2017. Available from: https://www.research.manchester.ac.uk/portal/en/theses/intrinsic-fluctuations-in-discrete-and-continuous-time-models(d7006a2b-1496-44f2-8423-1f2fa72be1a5).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.728013

University of Bristol

17. Olaeta, Haritz. Pharmacokinetics, cell kinetics and pharmacodynamics : a Bayesian approach.

Degree: PhD, 2002, University of Bristol

URL: http://hdl.handle.net/1983/456ab579-a29a-4096-aeec-2a722cf9ec20

Subjects/Keywords: 519; Population dynamics

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APA (6^th Edition):

Olaeta, H. (2002). Pharmacokinetics, cell kinetics and pharmacodynamics : a Bayesian approach. (Doctoral Dissertation). University of Bristol. Retrieved from http://hdl.handle.net/1983/456ab579-a29a-4096-aeec-2a722cf9ec20

Chicago Manual of Style (16^th Edition):

Olaeta, Haritz. “Pharmacokinetics, cell kinetics and pharmacodynamics : a Bayesian approach.” 2002. Doctoral Dissertation, University of Bristol. Accessed April 11, 2021. http://hdl.handle.net/1983/456ab579-a29a-4096-aeec-2a722cf9ec20.

MLA Handbook (7^th Edition):

Olaeta, Haritz. “Pharmacokinetics, cell kinetics and pharmacodynamics : a Bayesian approach.” 2002. Web. 11 Apr 2021.

Vancouver:

Olaeta H. Pharmacokinetics, cell kinetics and pharmacodynamics : a Bayesian approach. [Internet] [Doctoral dissertation]. University of Bristol; 2002. [cited 2021 Apr 11]. Available from: http://hdl.handle.net/1983/456ab579-a29a-4096-aeec-2a722cf9ec20.

Council of Science Editors:

Olaeta H. Pharmacokinetics, cell kinetics and pharmacodynamics : a Bayesian approach. [Doctoral Dissertation]. University of Bristol; 2002. Available from: http://hdl.handle.net/1983/456ab579-a29a-4096-aeec-2a722cf9ec20

Rice University

18. Bibian, Andrew James. Population Dynamics of Heritable Symbionts when Accounting for the Life History Complexity of their Host.

Degree: MA, Natural Sciences, 2015, Rice University

URL: http://hdl.handle.net/1911/87751

► I developed theory and experiments to understand how complex life cycles of a host affect the dynamics of their heritable symbionts, important ecological and evolutionary… (more)

Subjects/Keywords: Host-symbiont dynamics; stage structured population

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APA (6^th Edition):

Bibian, A. J. (2015). Population Dynamics of Heritable Symbionts when Accounting for the Life History Complexity of their Host. (Masters Thesis). Rice University. Retrieved from http://hdl.handle.net/1911/87751

Chicago Manual of Style (16^th Edition):

Bibian, Andrew James. “Population Dynamics of Heritable Symbionts when Accounting for the Life History Complexity of their Host.” 2015. Masters Thesis, Rice University. Accessed April 11, 2021. http://hdl.handle.net/1911/87751.

MLA Handbook (7^th Edition):

Bibian, Andrew James. “Population Dynamics of Heritable Symbionts when Accounting for the Life History Complexity of their Host.” 2015. Web. 11 Apr 2021.

Vancouver:

Bibian AJ. Population Dynamics of Heritable Symbionts when Accounting for the Life History Complexity of their Host. [Internet] [Masters thesis]. Rice University; 2015. [cited 2021 Apr 11]. Available from: http://hdl.handle.net/1911/87751.

Council of Science Editors:

Bibian AJ. Population Dynamics of Heritable Symbionts when Accounting for the Life History Complexity of their Host. [Masters Thesis]. Rice University; 2015. Available from: http://hdl.handle.net/1911/87751

Virginia Tech

19. Mowlaei, Shahir. Mean Field Analysis of Generalized Cyclic Competitions.

Degree: PhD, Physics, 2015, Virginia Tech

URL: http://hdl.handle.net/10919/52962

► The mean field analysis of stochastic dynamical system allows us to gain insight into the qualitative features of their complex behavior, as well as quantitative… (more)

Subjects/Keywords: Population Dynamics; Mean Field; Cyclic Competition

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APA (6^th Edition):

Mowlaei, S. (2015). Mean Field Analysis of Generalized Cyclic Competitions. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/52962

Chicago Manual of Style (16^th Edition):

Mowlaei, Shahir. “Mean Field Analysis of Generalized Cyclic Competitions.” 2015. Doctoral Dissertation, Virginia Tech. Accessed April 11, 2021. http://hdl.handle.net/10919/52962.

MLA Handbook (7^th Edition):

Mowlaei, Shahir. “Mean Field Analysis of Generalized Cyclic Competitions.” 2015. Web. 11 Apr 2021.

Vancouver:

Mowlaei S. Mean Field Analysis of Generalized Cyclic Competitions. [Internet] [Doctoral dissertation]. Virginia Tech; 2015. [cited 2021 Apr 11]. Available from: http://hdl.handle.net/10919/52962.

Council of Science Editors:

Mowlaei S. Mean Field Analysis of Generalized Cyclic Competitions. [Doctoral Dissertation]. Virginia Tech; 2015. Available from: http://hdl.handle.net/10919/52962

Georgia Tech

20. Jover, Luis F. Infection networks, life-history traits, and dynamics in complex virus-microbe systems.

Degree: PhD, Physics, 2016, Georgia Tech

URL: http://hdl.handle.net/1853/55560

► Bacteria and their viral parasites, i.e., phages, are found in natural environments from oceans, soils to the human gut. Phages are key players in ecosystems… (more)

Subjects/Keywords: virus-bacteria; complex networks; population dynamics

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APA (6^th Edition):

Jover, L. F. (2016). Infection networks, life-history traits, and dynamics in complex virus-microbe systems. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/55560

Chicago Manual of Style (16^th Edition):

Jover, Luis F. “Infection networks, life-history traits, and dynamics in complex virus-microbe systems.” 2016. Doctoral Dissertation, Georgia Tech. Accessed April 11, 2021. http://hdl.handle.net/1853/55560.

MLA Handbook (7^th Edition):

Jover, Luis F. “Infection networks, life-history traits, and dynamics in complex virus-microbe systems.” 2016. Web. 11 Apr 2021.

Vancouver:

Jover LF. Infection networks, life-history traits, and dynamics in complex virus-microbe systems. [Internet] [Doctoral dissertation]. Georgia Tech; 2016. [cited 2021 Apr 11]. Available from: http://hdl.handle.net/1853/55560.

Council of Science Editors:

Jover LF. Infection networks, life-history traits, and dynamics in complex virus-microbe systems. [Doctoral Dissertation]. Georgia Tech; 2016. Available from: http://hdl.handle.net/1853/55560

University of South Carolina

21. Hounchell, Katrina C. Determining the Population Dynamics and Reproductive Life History of Commercially Important Tunas in the Gulf of Mexico.

Degree: MS, Biological Sciences, 2017, University of South Carolina

URL: https://scholarcommons.sc.edu/etd/4336

► The Gulf of Mexico (GOM) is an important spawning ground for many commercially important fish species including yellowfin, skipjack, and blackfin tunas. In particular,… (more)

Subjects/Keywords: Biology; Life Sciences; Population Dynamics; Tunas

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APA (6^th Edition):

Hounchell, K. C. (2017). Determining the Population Dynamics and Reproductive Life History of Commercially Important Tunas in the Gulf of Mexico. (Masters Thesis). University of South Carolina. Retrieved from https://scholarcommons.sc.edu/etd/4336

Chicago Manual of Style (16^th Edition):

Hounchell, Katrina C. “Determining the Population Dynamics and Reproductive Life History of Commercially Important Tunas in the Gulf of Mexico.” 2017. Masters Thesis, University of South Carolina. Accessed April 11, 2021. https://scholarcommons.sc.edu/etd/4336.

MLA Handbook (7^th Edition):

Hounchell, Katrina C. “Determining the Population Dynamics and Reproductive Life History of Commercially Important Tunas in the Gulf of Mexico.” 2017. Web. 11 Apr 2021.

Vancouver:

Hounchell KC. Determining the Population Dynamics and Reproductive Life History of Commercially Important Tunas in the Gulf of Mexico. [Internet] [Masters thesis]. University of South Carolina; 2017. [cited 2021 Apr 11]. Available from: https://scholarcommons.sc.edu/etd/4336.

Council of Science Editors:

Hounchell KC. Determining the Population Dynamics and Reproductive Life History of Commercially Important Tunas in the Gulf of Mexico. [Masters Thesis]. University of South Carolina; 2017. Available from: https://scholarcommons.sc.edu/etd/4336

University of Georgia

22. Wright, Alexander David. Long-term population ecology and movement patterns of gopher tortoises (Gopherus polyphemus) in southwest Georgia.

Degree: 2017, University of Georgia

URL: http://hdl.handle.net/10724/36562

► Habitat loss, fragmentation, and degradation have led to an estimated 80% range-wide decline of gopher tortoise (Gopherus polyphemus) populations across the Southeastern Coastal Plain. Recently,… (more)

Subjects/Keywords: gopher tortoise; Gopherus polyphemus; population dynamics

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APA (6^th Edition):

Wright, A. D. (2017). Long-term population ecology and movement patterns of gopher tortoises (Gopherus polyphemus) in southwest Georgia. (Thesis). University of Georgia. Retrieved from http://hdl.handle.net/10724/36562

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):

Wright, Alexander David. “Long-term population ecology and movement patterns of gopher tortoises (Gopherus polyphemus) in southwest Georgia.” 2017. Thesis, University of Georgia. Accessed April 11, 2021. http://hdl.handle.net/10724/36562.

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

MLA Handbook (7^th Edition):

Wright, Alexander David. “Long-term population ecology and movement patterns of gopher tortoises (Gopherus polyphemus) in southwest Georgia.” 2017. Web. 11 Apr 2021.

Vancouver:

Wright AD. Long-term population ecology and movement patterns of gopher tortoises (Gopherus polyphemus) in southwest Georgia. [Internet] [Thesis]. University of Georgia; 2017. [cited 2021 Apr 11]. Available from: http://hdl.handle.net/10724/36562.

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

Council of Science Editors:

Wright AD. Long-term population ecology and movement patterns of gopher tortoises (Gopherus polyphemus) in southwest Georgia. [Thesis]. University of Georgia; 2017. Available from: http://hdl.handle.net/10724/36562

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

University of Sydney

23. Chan, Matthew Ho Tong. Mathematical modelling of dispersal and evolution of life-history traits in biological populations .

Degree: 2016, University of Sydney

URL: http://hdl.handle.net/2123/14870

► This thesis explores the role of intraspecific variation in a population and how this can affect the overall population dynamics. In particular, we have focused… (more)

▼ This thesis explores the role of intraspecific variation in a population and how this can affect the overall population dynamics. In particular, we have focused on population dispersal, the evolution of life-history traits and the interface between these two aspects. Through the use of mathematical modelling, we show how intraspecific variation is important to consider for an accurate description of the qualitative and quantitative dynamics of a population. Although intraspecific variation and interaction are widely accepted as being important components affecting the growth of a population, it is only recently that there has been an emphasis on individual heterogeneities affecting dispersal, in most part due to the increasing threat of biological invasions, spread of vector-borne diseases, extinction of heavily harvested populations and the fragmentation of habitats due to climate change. Moreover, although the ecological literature on life-history characteristics, their associated tradeoffs and their evolutionary consequences has a long history, the evolutionary consequences resulting from the interplay of life-history trade-offs are not so clear. The reverse is also true, for an observed qualitative behaviour, it is usually not clear what trade-offs are responsible. This is still the case for many fundamental questions in evolutionary biology, such as "Why do we grow old?", "Why does altruistic behaviour exist?" or "Why do human females regularly live past menopause while chimpanzees do not?". Chapters 2 and 3 examine the role of individual heterogeneity in a population and its effects on the persistence and spread rate of a population. Chapter 4 analyses the stability properties of the solution for the model in Chapter 3. Chapters 5 and 6 examine the evolutionary processes associated with dispersal by including the evolution of a trait that is linked with dispersal and life-history characteristics. Lastly, in Chapter 7 we solely examine the evolution of life-history traits and the evolutionary consequences. Since the inclusion of continuous space or a continuum of heritable trait values acts as an extra dimension, we have used partial differential equations to model the populations being considered in each chapter, with the exception of Chapter 2.

Subjects/Keywords: Mathematical biology; Population dynamics; Evolutionary dymanics

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APA (6^th Edition):

Chan, M. H. T. (2016). Mathematical modelling of dispersal and evolution of life-history traits in biological populations . (Thesis). University of Sydney. Retrieved from http://hdl.handle.net/2123/14870

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):

Chan, Matthew Ho Tong. “Mathematical modelling of dispersal and evolution of life-history traits in biological populations .” 2016. Thesis, University of Sydney. Accessed April 11, 2021. http://hdl.handle.net/2123/14870.

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

MLA Handbook (7^th Edition):

Chan, Matthew Ho Tong. “Mathematical modelling of dispersal and evolution of life-history traits in biological populations .” 2016. Web. 11 Apr 2021.

Vancouver:

Chan MHT. Mathematical modelling of dispersal and evolution of life-history traits in biological populations . [Internet] [Thesis]. University of Sydney; 2016. [cited 2021 Apr 11]. Available from: http://hdl.handle.net/2123/14870.

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

Council of Science Editors:

Chan MHT. Mathematical modelling of dispersal and evolution of life-history traits in biological populations . [Thesis]. University of Sydney; 2016. Available from: http://hdl.handle.net/2123/14870

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

University of Bristol

24. Olaeta, Haritz. Pharmacokinetics, cell kinetics and pharmacodynamics : a Bayesian approach.

Degree: PhD, 2002, University of Bristol

URL: https://research-information.bris.ac.uk/en/studentTheses/456ab579-a29a-4096-aeec-2a722cf9ec20 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.247645

Subjects/Keywords: 519; Population dynamics

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APA (6^th Edition):

Olaeta, H. (2002). Pharmacokinetics, cell kinetics and pharmacodynamics : a Bayesian approach. (Doctoral Dissertation). University of Bristol. Retrieved from https://research-information.bris.ac.uk/en/studentTheses/456ab579-a29a-4096-aeec-2a722cf9ec20 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.247645

Chicago Manual of Style (16^th Edition):

Olaeta, Haritz. “Pharmacokinetics, cell kinetics and pharmacodynamics : a Bayesian approach.” 2002. Doctoral Dissertation, University of Bristol. Accessed April 11, 2021. https://research-information.bris.ac.uk/en/studentTheses/456ab579-a29a-4096-aeec-2a722cf9ec20 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.247645.

MLA Handbook (7^th Edition):

Olaeta, Haritz. “Pharmacokinetics, cell kinetics and pharmacodynamics : a Bayesian approach.” 2002. Web. 11 Apr 2021.

Vancouver:

Olaeta H. Pharmacokinetics, cell kinetics and pharmacodynamics : a Bayesian approach. [Internet] [Doctoral dissertation]. University of Bristol; 2002. [cited 2021 Apr 11]. Available from: https://research-information.bris.ac.uk/en/studentTheses/456ab579-a29a-4096-aeec-2a722cf9ec20 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.247645.

Council of Science Editors:

Olaeta H. Pharmacokinetics, cell kinetics and pharmacodynamics : a Bayesian approach. [Doctoral Dissertation]. University of Bristol; 2002. Available from: https://research-information.bris.ac.uk/en/studentTheses/456ab579-a29a-4096-aeec-2a722cf9ec20 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.247645

University of Canterbury

25. Adkins, Suzanne Craig. Population Biology and Restoration of Intertidal Cockle Beds.

Degree: PhD, Environmental Sciences, 2012, University of Canterbury

URL: http://dx.doi.org/10.26021/7353

► There is evidence that infaunal bivalves in New Zealand are not as abundant as they once were with overfishing and habitat modification contributing to the… (more)

▼ There is evidence that infaunal bivalves in New Zealand are not as abundant as they once were with overfishing and habitat modification contributing to the decline in density and health of cockles. The population biology and abundance of the bivalve Austrovenus stutchburyi (tuangi) in eight beds in four estuaries was assessed both seasonally (13 seasons) and annually (7 years) as little is known about the cockle beds in the Canterbury region of New Zealand. As with populations of similar species worldwide, there were site specific differences in population structure (density and size ranges) with the highest densities at Takamatua (>1500/m²), and the lowest at Port Levy (<350/m²). Gonad indices varied between male and female cockles. Male reproductive cycles were similar at all sites with male cockles being reproductively active year round, while females were more active in spring and summer. Temporal and spatial site specific differences occurred in cockle condition with high salinity sites having higher condition indices (CI) than low salinity sites. There were spatial and temporal variations in salinity (3-35ppt), sediment structure (fine sand through to predominantly silt), water temperature (6-20°C), nutrient supply (total volatile solids (TVS) 0.002- 0.15mg/L) and contaminant levels. Metal pollution indices (MPI) ranged between 3 and 11. Three cockle transplant trials were undertaken both within and between estuarine systems. Caged cockles survived well, and cage design needed to allow vertical movement of the bivalves within the substrate to reduce mortality. At the end of the 12 month trial, approximately 45% of the cockles remained in the plots. The condition of transplanted cockles was similar to naturally occurring cockles. Recommendations are made to optimise the success of cockle transplants. Large scale, un-caged placement of 25-30mm length cockles in the mid-low tide region of areas with stable, but not necessarily uncontaminated substrate, moderate salinity and temperature and with a reliable nutrient supply is recommended. The results from the thesis research can be applied to other infaunal bivalves in New Zealand allowing more successful restoration processes leading to increased species diversity and ecosystem functioning.

Subjects/Keywords: Austrovenus stutchburyi; population dynamics; condition; transplant trials

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APA (6^th Edition):

Adkins, S. C. (2012). Population Biology and Restoration of Intertidal Cockle Beds. (Doctoral Dissertation). University of Canterbury. Retrieved from http://dx.doi.org/10.26021/7353

Chicago Manual of Style (16^th Edition):

Adkins, Suzanne Craig. “Population Biology and Restoration of Intertidal Cockle Beds.” 2012. Doctoral Dissertation, University of Canterbury. Accessed April 11, 2021. http://dx.doi.org/10.26021/7353.

MLA Handbook (7^th Edition):

Adkins, Suzanne Craig. “Population Biology and Restoration of Intertidal Cockle Beds.” 2012. Web. 11 Apr 2021.

Vancouver:

Adkins SC. Population Biology and Restoration of Intertidal Cockle Beds. [Internet] [Doctoral dissertation]. University of Canterbury; 2012. [cited 2021 Apr 11]. Available from: http://dx.doi.org/10.26021/7353.

Council of Science Editors:

Adkins SC. Population Biology and Restoration of Intertidal Cockle Beds. [Doctoral Dissertation]. University of Canterbury; 2012. Available from: http://dx.doi.org/10.26021/7353

University of Georgia

26. Schueller, Paul Michael. Population dynamics of Atlantic sturgeon in the Altamaha River, Georgia.

Degree: 2014, University of Georgia

URL: http://hdl.handle.net/10724/25306

► The Atlantic sturgeon was commercially harvested in the United States until 1996. The current status of most populations since fishery closure is unknown as life… (more)

Subjects/Keywords: Atlantic sturgeon; population assessment; population dynamics; mark-recapture

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APA (6^th Edition):

Schueller, P. M. (2014). Population dynamics of Atlantic sturgeon in the Altamaha River, Georgia. (Thesis). University of Georgia. Retrieved from http://hdl.handle.net/10724/25306

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):

Schueller, Paul Michael. “Population dynamics of Atlantic sturgeon in the Altamaha River, Georgia.” 2014. Thesis, University of Georgia. Accessed April 11, 2021. http://hdl.handle.net/10724/25306.

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

MLA Handbook (7^th Edition):

Schueller, Paul Michael. “Population dynamics of Atlantic sturgeon in the Altamaha River, Georgia.” 2014. Web. 11 Apr 2021.

Vancouver:

Schueller PM. Population dynamics of Atlantic sturgeon in the Altamaha River, Georgia. [Internet] [Thesis]. University of Georgia; 2014. [cited 2021 Apr 11]. Available from: http://hdl.handle.net/10724/25306.

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

Council of Science Editors:

Schueller PM. Population dynamics of Atlantic sturgeon in the Altamaha River, Georgia. [Thesis]. University of Georgia; 2014. Available from: http://hdl.handle.net/10724/25306

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

University of South Africa

27. Nembudani, Madzinge Ellen. Spatio-temporal dynamics in the provision of primary school education in Vhembe District, Limpopo, South Africa .

Degree: 2014, University of South Africa

URL: http://hdl.handle.net/10500/18694

► Spatial, temporal and population dynamics have influenced learner enrolments in Vhembe District primary schools in Limpopo, South Africa. Vhembe District primary schools have in recent… (more)

▼ Spatial, temporal and population dynamics have influenced learner enrolments in Vhembe District primary schools in Limpopo, South Africa. Vhembe District primary schools have in recent years experienced closure of some of its primary schools due to declining learner enrolments. The dynamics of demographic factors such as migration, fertility and mortality cause fluctuations in the school-age population over time and across space. Poor economic development, the location of the district and the spatial distribution of primary schools make the situation in this rural-based district even more complex. The communities of Vhembe District are discontent about the state of affairs in the area regarding the provision of education and the closure of schools. The closure of schools destabilises the social cohesion amongst members of the community and disempowers them, while inadequate provision of primary school education makes them feel neglected and robbed of their constitutional right. This study investigated the causes of declining learner enrolment and the effect of the closure of schools on the communities. To achieve the objectives data came from questionnaires at household level and from interviews conducted with educators, circuit managers, officials in the Limpopo Education Department and traditional leaders. The study found that declining fertility and out-migration from the area are responsible for a declining school-age population. This is the reality and the communities of Vhembe District will have to live with it because overall learner enrolments continue to decline. Lack of a planning model in the former Venda territory led to an over-supply of primary schools thus schools in close proximity had to compete for learners. Poorly equipped schools and general development of the area exacerbate the problem and some members of the community perceive education in this district to be inferior. Younger economically active people are increasingly moving to places with better opportunities. This study offers some recommendations to alleviate the problems identified in Vhembe District. Application of a geographical approach to an adaptive strategy considers the natural environment in political, social and economic context. It suggests that education authorities could apply such a strategy to make the schools in rural areas more sustainable Advisors/Committee Members: Fairhurst, U. J. (U. Joan) (advisor).

Subjects/Keywords: Spatio-temporal; Population dynamics; Primary schools; School-age population; Learner enrolment

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APA (6^th Edition):

Nembudani, M. E. (2014). Spatio-temporal dynamics in the provision of primary school education in Vhembe District, Limpopo, South Africa . (Doctoral Dissertation). University of South Africa. Retrieved from http://hdl.handle.net/10500/18694

Chicago Manual of Style (16^th Edition):

Nembudani, Madzinge Ellen. “Spatio-temporal dynamics in the provision of primary school education in Vhembe District, Limpopo, South Africa .” 2014. Doctoral Dissertation, University of South Africa. Accessed April 11, 2021. http://hdl.handle.net/10500/18694.

MLA Handbook (7^th Edition):

Nembudani, Madzinge Ellen. “Spatio-temporal dynamics in the provision of primary school education in Vhembe District, Limpopo, South Africa .” 2014. Web. 11 Apr 2021.

Vancouver:

Nembudani ME. Spatio-temporal dynamics in the provision of primary school education in Vhembe District, Limpopo, South Africa . [Internet] [Doctoral dissertation]. University of South Africa; 2014. [cited 2021 Apr 11]. Available from: http://hdl.handle.net/10500/18694.

Council of Science Editors:

Nembudani ME. Spatio-temporal dynamics in the provision of primary school education in Vhembe District, Limpopo, South Africa . [Doctoral Dissertation]. University of South Africa; 2014. Available from: http://hdl.handle.net/10500/18694

University of Southern Mississippi

28. Dippold, David Arthur. Fishery and Population Dynamics of Mississippi’s Spotted Seatrout.

Degree: MS, Coastal Sciences, Gulf Coast Research Laboratory, 2016, University of Southern Mississippi

URL: https://aquila.usm.edu/masters_theses/174

► Spotted Seatrout (Cynoscion nebulosus) is the most popular recreational inshore fishery in Mississippi coastal waters. Because of the popularity of Spotted Seatrout in Mississippi… (more)

Subjects/Keywords: marine fisheries; population dynamics; Gulf of Mexico; tag-recapture; Population Biology

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APA (6^th Edition):

Dippold, D. A. (2016). Fishery and Population Dynamics of Mississippi’s Spotted Seatrout. (Masters Thesis). University of Southern Mississippi. Retrieved from https://aquila.usm.edu/masters_theses/174

Chicago Manual of Style (16^th Edition):

Dippold, David Arthur. “Fishery and Population Dynamics of Mississippi’s Spotted Seatrout.” 2016. Masters Thesis, University of Southern Mississippi. Accessed April 11, 2021. https://aquila.usm.edu/masters_theses/174.

MLA Handbook (7^th Edition):

Dippold, David Arthur. “Fishery and Population Dynamics of Mississippi’s Spotted Seatrout.” 2016. Web. 11 Apr 2021.

Vancouver:

Dippold DA. Fishery and Population Dynamics of Mississippi’s Spotted Seatrout. [Internet] [Masters thesis]. University of Southern Mississippi; 2016. [cited 2021 Apr 11]. Available from: https://aquila.usm.edu/masters_theses/174.

Council of Science Editors:

Dippold DA. Fishery and Population Dynamics of Mississippi’s Spotted Seatrout. [Masters Thesis]. University of Southern Mississippi; 2016. Available from: https://aquila.usm.edu/masters_theses/174

University of Miami

29. Stipek, Clinton William. Population Dynamics of Seagrass Communities in Biscayne Bay, Florida: Exploring the Influence of Salinity on Seascape Fragmentation.

Degree: MS, Marine Biology and Ecology (Marine), 2018, University of Miami

URL: https://scholarlyrepository.miami.edu/oa_theses/741

► Seagrass communities display complex population dynamics that are presently poorly understood. While most studies of disturbance on seagrass habitats have focused on changes in… (more)

▼ Seagrass communities display complex population dynamics that are presently poorly understood. While most studies of disturbance on seagrass habitats have focused on changes in biomass at small, quadrat-level scales, limited information is available on the impacts of disturbances on seagrass patch dynamics on a broad scale. In this study, a landscape approach based on remote sensing imagery and population modelling were applied to understand seagrass patch dynamics and forecast the fate of these important communities in Biscayne Bay, Miami, Florida, US. The seagrass communities of Biscayne Bay are especially influenced by the modifications of the Everglades watershed that has significantly changed the timing of freshwater deliveries and nearshore salinity patterns over the last 70 years. This research evaluated the historical influence of salinity on seagrass communities and how changes in salinity may cause seascape fragmentation by documenting the long-term population dynamics of seagrass habitats found adjacent and distant to freshwater canals. A positive outcome of this study is that the historical analysis covering > 70 years revealed remarkable persistence of seagrass cover even in habitats that were modified by the construction of freshwater canals. Fragmentation rates of the seagrass patches varied spatially and temporally but were higher in sites adjacent to canals compared to sites removed from these influences. Furthermore, there was a clear trend in mortality rates in relation to the size of seagrass patches, with the smallest patches undergoing 57% annual mortality on average. Model simulations based on observed patch dynamics suggest that seagrass meadows can persist as long as the recruitment of new patches compensates for patch fragmentation. The combination of higher fragmentation rates and the higher mortality of smaller seagrass patches in habitats exposed to pulses of low salinity raises concern for the long-term persistence of seagrass meadows in nearshore urban habitats of Biscayne Bay that are presently targets of Everglades restoration. The combined remote sensing and population modelling approach used here provide evaluation and predictive tools that can be used by managers to track seagrass status and stress-response at seascape levels not available previously for the seagrasses of South Florida. Advisors/Committee Members: Diego Lirman, Elizabeth Babcock, Rolando Santos.

Subjects/Keywords: Fragmentation; population dynamics; seagrass; landscape approach; population modelling; spatial analysis

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APA (6^th Edition):

Stipek, C. W. (2018). Population Dynamics of Seagrass Communities in Biscayne Bay, Florida: Exploring the Influence of Salinity on Seascape Fragmentation. (Thesis). University of Miami. Retrieved from https://scholarlyrepository.miami.edu/oa_theses/741

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):

Stipek, Clinton William. “Population Dynamics of Seagrass Communities in Biscayne Bay, Florida: Exploring the Influence of Salinity on Seascape Fragmentation.” 2018. Thesis, University of Miami. Accessed April 11, 2021. https://scholarlyrepository.miami.edu/oa_theses/741.

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

MLA Handbook (7^th Edition):

Stipek, Clinton William. “Population Dynamics of Seagrass Communities in Biscayne Bay, Florida: Exploring the Influence of Salinity on Seascape Fragmentation.” 2018. Web. 11 Apr 2021.

Vancouver:

Stipek CW. Population Dynamics of Seagrass Communities in Biscayne Bay, Florida: Exploring the Influence of Salinity on Seascape Fragmentation. [Internet] [Thesis]. University of Miami; 2018. [cited 2021 Apr 11]. Available from: https://scholarlyrepository.miami.edu/oa_theses/741.

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

Council of Science Editors:

Stipek CW. Population Dynamics of Seagrass Communities in Biscayne Bay, Florida: Exploring the Influence of Salinity on Seascape Fragmentation. [Thesis]. University of Miami; 2018. Available from: https://scholarlyrepository.miami.edu/oa_theses/741

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

Université Catholique de Louvain

30. Radchuk, Viktoriia. Dealing with biological complexity in Population Viability Analysis lessons from two endangered butterfly species.

Degree: 2012, Université Catholique de Louvain

URL: http://hdl.handle.net/2078.1/120897

►

Conservation biology, the science aiming at the preservation of biodiversity on Earth, uses tools and models to forecast the fate of threatened species. Being a… (more)

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Conservation biology, the science aiming at the preservation of biodiversity on Earth, uses tools and models to forecast the fate of threatened species. Being a “crisis discipline”, it must often provide management guidelines despite incomplete evidence and constant threat of species extinctions. One of the priorities of quantitative conservation biologists is to find the balance between the investment (time, money and manpower) in model development and the reliability of its predictions. This PhD thesis focussed on Population Viability Analysis (PVA) models of two threatened butterfly species: Boloria eunomia and Maculinea alcon, with a simple and a more complex life cycle, respectively. I developed a series of PVA models differing in their complexity and compared them in terms of cost/benefit ratio. Firstly, in a series of laboratory and field experiments I estimated the vital rates of B. eunomia and used them to predict the overall population fate with a simple matrix model. Next, I compared four individual-based PVA models (IBM), differing in environmental factors affecting the survival of B. eunomia, in their ability to reproduce a series of empirical patterns. I then contrasted the best IBM with its more aggregated counterpart, a yearly stage-based model, showing the latter is sufficient for ranking climate change scenarios, whereas the daily IBM can be used for asking some more specific questions about population functioning. Finally, I developed a spatially and financially explicit stage-based PVA model for M. alcon and used it to find the most cost-effective management scenario. This thesis concludes that there is no a-priori and predefined answer as to which model complexity is the most suitable in each specific situation. Furthermore, developing a set of different models rather than using a single one brings a deeper and more complete understanding of the natural system.

(BIOL 3) – UCL, 2012

Advisors/Committee Members: UCL - SST/ELI/ELIB - Biodiversity, Schtickzelle, Nicolas, De Keersmaecker, Marie-Laurence, Van Dyck, Hans, Baguette, Michel, Hovestadt, Thomas, Grimm, Volker.

Subjects/Keywords: Population dynamics; Modelling; Individual-based model; Structured population model; Butterfly; Complexity

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APA (6^th Edition):

Radchuk, V. (2012). Dealing with biological complexity in Population Viability Analysis lessons from two endangered butterfly species. (Thesis). Université Catholique de Louvain. Retrieved from http://hdl.handle.net/2078.1/120897

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):

Radchuk, Viktoriia. “Dealing with biological complexity in Population Viability Analysis lessons from two endangered butterfly species.” 2012. Thesis, Université Catholique de Louvain. Accessed April 11, 2021. http://hdl.handle.net/2078.1/120897.

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

MLA Handbook (7^th Edition):

Radchuk, Viktoriia. “Dealing with biological complexity in Population Viability Analysis lessons from two endangered butterfly species.” 2012. Web. 11 Apr 2021.

Vancouver:

Radchuk V. Dealing with biological complexity in Population Viability Analysis lessons from two endangered butterfly species. [Internet] [Thesis]. Université Catholique de Louvain; 2012. [cited 2021 Apr 11]. Available from: http://hdl.handle.net/2078.1/120897.

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

Council of Science Editors:

Radchuk V. Dealing with biological complexity in Population Viability Analysis lessons from two endangered butterfly species. [Thesis]. Université Catholique de Louvain; 2012. Available from: http://hdl.handle.net/2078.1/120897

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

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