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 8 of 8 for “"niche segregation"”.
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Niche segregation among three sympatric species of swallows in southern Ontario
… ecologically, and their coexistence implies niche segregation. I investigated potential interspecific differences in nestling diet and post-fledging movements. Using DNA barcoding of nestling feces and stable isotope analysis (δ13C, δ15N, δ2H) of nestling feathers, I found evidence of …
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Can hydrological niche segregation explain species distributions in an aquifer-dependent wetland?
… influence community composition and species segregation requires further testing in fynbos but has important implications for understanding the potential impacts of groundwater abstraction in these fire-prone systems as well as identifying potentially sensitive species. Methods: I analyzed …
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Another look at the savannah conundrum : evidence of niche segregation and competition avoidance with grasses in establishing trees
… In light of this, we propose a dynamic two-niche hypothesis of savannah tree-grass co-existence.
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Assessing safety margins and hydraulic strategies in Restionaceae: evaluating xylem hydraulic traits in two Elegia species
… Many plant species have exhibited hydraulic niche segregation as a result of a trade-offs between stomatal regulation and xylem integrity, and the associated physiological adaptations. This is concerning in the face of climate change predictions of more frequent and intense drought and …
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Structure-function relationships in the water-use strategies and ecological diversity of the Bromeliaceae
… kinetics, and a case study of trait-mediated niche segregation among congeneric epiphytic bromeliad species on the Caribbean island of Trinidad. The results highlight how divergences in a range of continuous and categorical anatomical traits underpin differences in physiological capacities and …
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Food Habits of Young-of-the-Year Fishes in Abbey Pond, South Dakota
… Analysis of species food habits did not indicate niche segregation. The degree of overlapping food habits existing in Abbey Pond may be an important protection against overpopulation and may result in a more stable fish population.
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Ecological segregation inferred using chemical tracers and contamination assessment of five toothed whales in the Northwest Iberian Peninsula
… PhD was to determine the degree of ecological segregation between five sympatric species of toothed whales (i.e. common dolphin Delphinus delphis, harbour porpoise Phocoena phocoena, bottlenose dolphin Tursiops truncatus, striped dolphin Stenella coeruleoalba and long finned pilot whale …
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Consequences of drought, flooding, and insect herbivory on the distributions of closely related willow and poplar (Salicaceae) species across hydrologic gradients in Minnesota wetlands
… mediated by water stresses likely caused habitat segregation among species. Furthermore, species in the Salicaceae family are known to host a variety of insect herbivores, which makes insect herbivory another possible process influencing beta diversity among the Salicaceae communities. Chapter 1 …