Global ETD Search
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Showing 1 to 3 of 3 for “"imperilment"”.
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Habitat and Imperilment of the Candy Darter <i>Etheostoma osburni</i> in the New River Drainage, USA
… both hotspots for biodiversity and centers of imperilment. The specific spatiotemporal scales at which stressors impact biota are often unknown, partly due to inadequate knowledge about many species' life-histories. I conducted two complementary studies to investigate the habitat associations …
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Defining rarity and determining the mechanisms of rarity for North American freshwater fishes
… between these dimensions of rarity and imperilment. Imperiled fishes were most often rare by all three dimensions, whereas undesignated species were most often common by all three dimensions. Next, I examined the effect of sampling intensity on observed rarity of stream fish using …
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Rapid Quantitative Assessment to Assist in Identification of Imperiled Fishes
Methodologies for ranking conservation status of fishes range from a rapid qualitative method (e.g., expert opinion) commonly used by state agencies to time-consuming quantitative method (i.e., Species Status Assessment; SSA) currently used by US Fish and Wildlife Service. Purpose of this study was …