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 20 of 22 for “"population processes"”.
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Population processes and patterns across scales
… at one scale are generated by a multitude of processes operating at various scales. Two approaches are especially powerful at linking these processes to patterns: mathematical modeling and using a citizen science dataset. This dissertation uses these two approaches to detect unobservable …
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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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Life history traits and population processes in marine bivalve molluscs
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Biology, 1998.
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Predictability studies of coastal marine ecosystem behavior
… from the simple superposition of separate processes. These concepts entered marine ecology in the last 25 years, when “Systems Ecology” became an important branch of biological oceanography since the fundamental text of Odum (1983). Since then, the holistic view on the ecosystem behavior …
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Scale dependent genetic structure of Idaho Giant salamanders (Dicamptodon aterrimus) in stream networks
Stream network structure constrains population processes of freshwater organisms, with individual, population and community level consequences. This consistent structure provides a framework in which examination of life-history influences on population genetic structure may provide general insight. …
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Scale dependent genetic structure of Idaho Giant salamanders (Dicamptodon aterrimus) in stream networks
Stream network structure constrains population processes of freshwater organisms, with individual, population and community level consequences. This consistent structure provides a framework in which examination of life-history influences on population genetic structure may provide general insight. …
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A Comparison of Coalescent Estimation Software
Coalescent theory is a method often used by population geneticists in order to make inferences about evolutionary parameters. The coalescent is a stochastic model that approximates ancestral relationships among genes. An understanding of the coalescent pattern of a sample of sequences, along with …
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Mathematical and Computational Applications in Disease and Landscape Ecology
… models to simulate the actions of ecosystem and population processes in complex environments.</p> <p>My specific research focus is in the development of mathematical and computational models to synthesize environmental data for describing and predicting the characteristics of population and …
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Mathematical and Computational Applications in Disease and Landscape Ecology
… models to simulate the actions of ecosystem and population processes in complex environments.</p> <p>My specific research focus is in the development of mathematical and computational models to synthesize environmental data for describing and predicting the characteristics of population and …
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Chromosomal inversions as a mechanism for sympatric differentiation in common quails
… This thesis assess how this rearrangement shapes population processes and contributes to divergence in sympatry. In Chapter 1, quails wintering in southern Iberia are analysed to determine the genetic composition of the wintering population and to test whether the presence of overwintering …
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Historical and Geographic Context for the Evolution of Climate Niche Breadth in Temperate Plants
… range of environmental conditions necessary for population growth. Among these conditions, climate is especially important. Climate niche breadth in turn may reflect a confluence of different forces. This dissertation presents a series of projects that assess the relative roles of historical, …
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The Impact of Global Climate Change on Tropical Forest Biodiversity in Amazonia
… and by dispersal barriers. A sizestructured population is simulated for each cell, to enable modelling of lags in response to climate change. In the standard impact scenario (SIS), future population processes are simulated over 100 years, with changes in the variables governing cell …
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Mitochondrial DNA in ancient human populations of Europe.
… of thousand years of human evolutionary and population history. Geographical variation in the nonrecombining maternally inherited mitochondrial DNA has been studied in a wide array of modern populations in order to reconstruct the migrations that have participated in the spread of our …
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Connectivity, metapopulation dynamics, and genetic structure of tiger salamanders in a heterogeneous landscape
Metapopulation biology has been integral for understanding the impact of spatial habitat structure on ecological and evolutionary processes. In fragmented landscapes, theory predicts that species occupancy and turnover dynamics depend on habitat area and isolation, and isolation has historically …
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Ecology of the eastern quoll dasyurus viverrinus, (Dasyrudae: Marsupialia)
… July 1978 to June 1981. Most of the research on population processes and social organization was conducted on a population in the Huon peninsula. Qualls had one breeding season each year. Although females were seasonally polyoestrous (May-August), the high synchrony of births indicated tl1a t …
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Ecology of the eastern quoll dasyurus viverrinus, (Dasyrudae: Marsupialia)
… July 1978 to June 1981. Most of the research on population processes and social organization was conducted on a population in the Huon peninsula. Qualls had one breeding season each year. Although females were seasonally polyoestrous (May-August), the high synchrony of births indicated tl1a t …
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The impacts of rural-to-urban labor migration on the rural environment in Chongqing municipality, southwest China: Mediating roles of rural household livelihoods and community development
The relationship between population and the environment holds an important role in research on the linkages between human society and ecological systems. Recent studies on population and the environment have turned research focus toward the more dynamic factor of population processes – migration. …
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Smelt (Retropinna retropinna) population dynamics and predation by rainbow trout (Salmo gairdneri) in Lake Taupo
This study examines smelt (Retropinna retropinna) population biology in Lake Taupo, New Zealand, and describes the development of a model which simulated their population dynamics and interactions with rainbow trout (Salmo gairdneri), their principal predator. The model was used to predict the …
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Modelling and inference in active systems
… all disciplines of science. While the underlying processes driving these systems out of equilibrium (may that be thermal, chemical or another type of equilibrium) may be entirely unrelated, it is often the case that the same or a similar mathematical model is capable of describing either of the …
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