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 10 of 10 for “"habitat specificity"”.
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The butterfly community of a managed West African rainforest: patterns of habitat specificity, diversity, stratification and movement.
… charakteristisch für marginale und offene Waldhabitate sind, und am kleinsten für Schmetterlingsarten, die waldbodennah fliegen und deren Larven an Sträuchern und Kletterpflanzen des Waldunterwuchses gebunden sind. Die Vertikalstratifikation der Nymphaliden-Gemeinschaft, an 204 Fangtagen auf …
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Landscape Versus Local Determinants of Butterfly Movement Behaviors.
… contrast, and stream proximity, and two local habitat attributes: host plant cover and comprehensive vegetative structure. Across species, I tested the relative importance of organism size and habitat specificity to explain response variation. In general, butterfly responses to landscape …
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Environmental driver effects on population growth rates vary by rarity type and variation in demographic rate sensitivity
… vary by population or rarity type (range size, habitat specificity, and population density). I examined how the effects of drivers on vital rates could impact population growth due to variation of population growth sensitivity to demographic rates. I found significant variation in effects of …
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Comparative plasticity of rare Pityopsis ruthii and its common congener P. graminifolia
… understanding its constrained distribution and habitat specificity.
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Facilitation of Yucca brevifolia recruitment by Mojave Desert shrubs
… The research indicates there is strong micro-habitat specificity for Yucca brevifolia recruitment under the canopy of nurse plants. These data also suggest that the local presence of specific perennial shrubs resulted in higher levels of recruitment causing a distinct pattern of community …
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Life history biology and soil characteristics of two species of Arctomecon (Papaveraceae)
… most notably sulfur and calcium content. Due to habitat specificity, especially for Arctomecon californica, intact gypsum outcrops must be preserved in order to preserve the species.
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Spatial Variation in Basal Resources and Trophic Position of Selected Fishes of the North-Central Gulf of Mexico
… Mississippi Sound exhibited varying degrees of habitat usage, with Red Drum being the most diverse, while Gafftopsail Catfish and Atlantic Sharpnose shark had more habitat specificity. This study presented evidence that freshwater inputs influenced the isotope values of reef fish species. …
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IMPACTS OF RIVER INFLUENCE AND WAVE EXPOSURE ON THE EPIPSAMMIC DIATOMS OF THE LAKE SUPERIOR WAVE ZONE
… is known about primary productivity in wave zone habitats of very large lakes, it is presumably dominated by microalgae that attach to mineral substrates. Watershed energetics are linked with these wave zones through river mouth habitats, which provide nutrient and organismal input to lake …
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Consequences of plant population size for pollinator visitation and plant reproductive success
Habitat loss and fragmentation have a prominent role in determining the size of plant populations, and can affect plant-pollinator interactions. It is hypothesized that in small plant populations the ability to set seeds can be reduced due to limited pollination services, since individuals in small …
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Biodiversity-ecosystem service relationships in degraded and recovering ecosystems.
… traits of the species, with invasions in open habitats by woody species likely to drive a negative relationship between richness change and biomass change with the opposite true when grassy species invade woodlands. This result presents a trade-off between conservation priorities that managers …