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 9 of 9 for “"Ecological Specialization"”.
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Responses of raptors to habitat fragmentation : from individual responses to population susceptibility
… extinction risk. For example, body size, rarity, ecological specialization, matrix use, range size and turnover rate have all been linked with species extinction risk. Few studies have, however, attempted to explore the traits that predispose raptors to vulnerability from fragmentation. In this …
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Experimental Evolution with Escherichia coli in Diverse Resource Environments: are 'Jacks of all Trades' truly 'Masters' of None?
… none? This question is relevant to theories of ecological specialization, the maintenance of genetic variation, and sympatric speciation, yet its answer remains uncertain, despite a wealth of experiments aimed at elucidating the limits of adaptation. To test whether bacterial jacks of all trades …
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Integrated analysis of relationships between 3D-structure, leaf photosynthesis, and branch transpiration of mature Fagus sylvatica and Quercus petraea trees in a mixed forest stand
… that is interpreted in terms of species-specific ecological specialization.
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The influence of vicariance and dispersal on the diversification and evolution of springtails (collembola)
… diversity is essential for understanding ecological patterns and for the development and implementation of management strategies intended to conserve biodiversity. My dissertation research is focused on the historical, ecological and evolutionary underpinnings driving the origin, …
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An Evaluation of Relative Weight as an Indicator of Body Composition and Nutritional Status in Wild Fish
… explanatory power (adjusted R2 = 0.13 and 0.14). Ecological specialization affected correlations to Wr. Theoretically, condition index values are determined by resource acquisition versus expenditure. Exact physiological expression is determined by life history and performance. Condition indices …
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The double life of an insect pathogen: Metarhizium as a plant symbiont and its genetic diversity in coffee agroecosystems
… However, these fungi are poorly considered in an ecological context and data about their diversity and abundance in agricultural soils and in association with plant rhizosphere are very sparse, especially in tropical ecosystems. Also, considering the ability to form mutualistic association with …
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From brain development to reproductive axis: an integrated study of the nervous system in cartilaginous fish
… exceeding 400 million years. Despite their ecological importance and key phylogenetic position, major gaps persist in our understanding of their neurobiology, particularly regarding postnatal brain development, habitat-related brain organization, and the neuroendocrine control of …
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Illuminating the Drivers of Genomic Diversification in Lamprologine Cichlids of the Lower Congo River
… biodiversity, endemicity, and morphological and ecological specialization. This system is thus an excellent natural laboratory for understanding complex speciation and population diversification processes. In my research, I explore various drivers of diversification, and adaptive evolution in …
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Molecular phylogenetics, taxonomy and niche-based conservation risk assessment of Thesium L. (Santalaceae)
… regional endemics. The GCFR Thesium, including ecologicalspecialists and generalists, offers an appropriate system for evaluating both the correlates of range extent, specialisation and the relative extinction risks associated with both ecological strategies. Here, it is predicted that a …