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 17 of 17 for “"Matrix Population"”.
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On the Dynamic Dichotomy between Positive Equilibria and Synchronous 2-cycles in Matrix Population Models
For matrix population models with nonnegative, irreducible and primitive inherent projection matrices, the stability of the branch of positive equilibria that bifurcates from the extinction equilibrium as the dominant eigenvalue of the inherent projection matrix increases through one is determined …
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Mark-recapture statistics and demographic analysis
Mark-recapture analysis of populations is becoming an important tool in population biology. Mark-recapture methods can be used to estimate transition probabilities among life-stages from capture histories of marked individuals for which stages can be determined at each sampling occasion. This …
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Mark-recapture statistics and demographic analysis
Mark-recapture analysis of populations is becoming an important tool in population biology. Mark-recapture methods can be used to estimate transition probabilities among life-stages from capture histories of marked individuals for which stages can be determined at each sampling occasion. This …
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A model for Arctic Charr populations in Cambridge Bay considering fluctuating environment
… an age- and stage-structured discrete-time matrix population model to describe the behaviour of an Arctic Charr population. Given the properties of the model, a weak ergodic behaviour is expected in the long run. Then, utilizing data collected in Cambridge Bay and using a generalized …
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Dynamic energy budgets and bioaccumulation : a model for marine mammals and marine mammal populations
… affects growth of organisms and, therefore, populations. Persistent lipophilic toxicants acquired with the energy can bioaccumulate and harm individuals. Marine mammals are particularly vulnerable because of their large energy requirements, and transfer of energy and toxicants from mothers to …
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Dynamic energy budgets and bioaccumulation : a model for marine mammals and marine mammal populations
… affects growth of organisms and, therefore, populations. Persistent lipophilic toxicants acquired with the energy can bioaccumulate and harm individuals. Marine mammals are particularly vulnerable because of their large energy requirements, and transfer of energy and toxicants from mothers to …
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Ornate box turtle (Terrapene ornata) demography in northern Illinois
Demographic studies of wildlife populations are needed to guide management decisions for threatened species. Without data on population vital rates, decisions are often speculative and based on general information about a species rather than at the population level. The Ornate Box Turtle (Terrapene …
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Life history traits and population processes in marine bivalve molluscs
… of the clam Mya arenaria determine the population response to chronic contaminant exposure. To predict the potential responses of a broadcast-spawning life history such as that of M. arenaria, I surveyed the literature on a variety of bivalve species. By incorporating information on …
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Transient dynamics in plant population models
… 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 …
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Transient dynamics in plant population models
… 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 …
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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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Modeling the effects of endocrine disrupting chemicals on Atlantic croaker: understanding biomarkers and predicting population responses
… results to indicators of individual and population health. First, I created a physiologically based model that simulates vitellogenesis in a female fish. The model simulates the major biochemical reactions from the secretion of gonadotropin to the production of vitellogenin. I simulated …
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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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Modelling the Impact of Climate Change on the Polar Bear Population in Western Hudson Bay
… model the impact of climate change on polar bear populations. The first model is a discrete matrix model with time-dependent parameters, which are influenced by temperature increases. Sensitivity analysis is done on the model. Numerical simulations predict there exist several scenarios that result …
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Dynamic Spatial Forecasting of Sea Lice Abundances
… challenge to both aquaculture and wild salmon populations. L. salmonis infect salmonids, feeding on mucous, skin and flesh of infected fish, reducing fitness and increasing morbidity. The management of sea lice is a key consideration for farm operators and governments. This necessitates a …
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Developing and assessing methods to census and monitor burrow-nesting seabirds in Ireland
Censusing and monitoring populations are key priorities in conservation. This is particularly challenging for seabirds, where several life history characteristics and the remote nature of breeding colonies of many species make them difficult to study. Burrow-nesting species are the most difficult …
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Population Dynamics of Piping Plovers (Charadrius melodus) on the Missouri River
… and predation are threatening many shorebird populations worldwide. While habitat preservation often is preferable, sometimes habitat needs to be restored or created in order to stave off immediate declines. The Great Plains population of piping plovers (Charadrius melodus) was listed as …