Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"population dynamic"”.
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A population dynamic model assessing options for managing eastern oysters (Crassostrea virginica) and triploid Suminoe oysters (Crassostrea ariakensis) in Chesapeake Bay
A demographic population simulation model was developed to examine alternative fishery management strategies and their likely effects on the probability of extirpation of local eastern oyster (Crassostrea virginica) populations in the Chesapeake Bay. Management strategies include varying the …
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A Qualitative Study of the Positioning of Emergent Bilinguals during Formal and Informal School-Based Interactions
… of emergent bilinguals in schools. The population of the school under study uniquely positioned emergent bilinguals as not only the linguistic minority but also the numeric minority, a population dynamic notably underrepresented in the literature. Using a positioning theory framework …
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Investigating the performance of process-observation-error-estimator and robust estimators in surplus production model: a simulation study
… Our study suggested that POE_N be used for population dynamic models in future stock assessment. Multiple indices from valid surveys should be incorporated into stock assessment models. OE_N can be considered when multiple indices are available.
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Climate Change, Gene Flow, and the Legendary Synchrony of Snowshoe Hares
… best-known examples of cyclic and synchronous population dynamics among boreal species. Simultaneously, some studies have predicted that as species' ranges shift poleward and southern habitats fragment in response to climate change, we will lose the southern glacial refugial populations that …
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Climate Change, Gene Flow, and the Legendary Synchrony of Snowshoe Hares
… best-known examples of cyclic and synchronous population dynamics among boreal species. Simultaneously, some studies have predicted that as species' ranges shift poleward and southern habitats fragment in response to climate change, we will lose the southern glacial refugial populations that …
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Population dynamics and diversity of Synechococcus on the New England Shelf
… tools, which have not been able to resolve population dynamics at timescales that match response times of cells (hours-days). Development of an automated flow cytometer (FlowCytobot) has enabled hourly observation of Synechococcus at the Martha’s Vineyard Coastal Observatory (MVCO) since …
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Structure, Dynamics, and Movement Patterns for Crappies in South Dakota Waters
… I sampled 22 black crappie P. nigromaculatus populations to determine the abiotic and biotic components that affect black crappie recruitment, growth, mortality, size structure, and condition in South Dakota waters. Recruitment stability index (RSI) values were best correlated with shoreline …
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An Examination of Seasonal Growth and Survivorship of <i>Sigmodon hispidus</i> in Southeastern Virginia
<p>A reexamination of specific population dynamic aspects of <em>Sigmodon hispidus</em>, the hispid cotton rat, is necessary in order to gain additional knowledge and perspective on this species in its northernmost distribution on the east coast of the United States. Previous studies of Virginia …
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Population dynamics and diversity of Synechococcus on the New England shelf
… tools, which have not been able to resolve population dynamics at timescales that match response times of cells (hours-days). Development of an automated flow cytometer (FlowCytobot) has enabled hourly observation of Synechococcus at the Martha's Vineyard Coastal Observatory (MVCO) since …
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The ecology of the lucerne flea, Sminthurus viridis, in the South-Auckland/Waikato area
… was therefore decided to study the bionomics and population dynamics of LF, and aspects related to the damage, caused by LF. The study showed that the life cycle of LF consisted of three nymphal instars, one adult male and three adult female instars with the males being smaller and lighter in …
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Influence of Gizzard Shad on Fish Community Ecology in Northeastern South Dakota Glacial Lakes
… and 2) determine the impacts gizzard shad on the population dynamic rates and seasonal diets of both walleye and yellow perch in northeastern South Dakota glacial lakes. To determine the effects that gizzard shad had on walleye and yellow perch in northeastern South Dakota glacial lakes I …
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Use of Geographic Information System and Remote Sensing Technologies to Describe Mosquito Population Dynamics in the Ray Roberts Greenbelt, Denton County, Texas
A population survey was conducted from April through September 2002 on mosquito species occurring on the Ray Roberts Greenbelt, a riparian corridor used for public recreation on the Elm Fork of the Trinity River, in Denton County, Texas. ArcGIS software was used to set up a stratified random …
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Population Ecology and Foraging Behavior of Breeding Birds in Bottomland Hardwood Forests of the Lower Roanoke River
… processes, such as nest predation. Bird populations are remarkably constant over time relative to other taxa, implying strong regulation. Avian population ecologists, however, have not studied regulatory mechanisms as often as seasonal limiting factors. Conversely, avian behavioral …
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Defining genomic drivers of evolution in the entomopathogenic Serratia spp. A thesis submitted in partial fulfilment of the requirements for the Degree of Doctor of Philosophy at Lincoln University
… to be around 44% of the S. entomophila population) in sampled field sites around New Zealand. It is yet to be elucidated why the pADAP plasmid is only found in a proportion of the population, if this is a stable population, or what benefit can be conferred by the presence or absence of …