The potential of passive stream restoration to improve stream habitat and minimize the impact of fish disease: a short-term assessment

Autor:	Phaedra Budy, E. S. Hansen
Rok vydání:	2011
Předmět:	geography education.field_of_study geography.geographical_feature_category Ecology Population Introduced species Aquatic Science Biology Habitat destruction Habitat Exclosure education Stream restoration Restoration ecology Ecology Evolution Behavior and Systematics Riparian zone
Zdroj:	Journal of the North American Benthological Society. 30:573-588
ISSN:	1937-237X 0887-3593
DOI:	10.1899/10-018.1
Popis:	We evaluated the potential of habitat restoration to improve stream and riparian habitat and to minimize the prevalence of whirling disease in a population of native cutthroat trout in northern Utah. We fenced 67 ha of riparian habitat to exclude livestock and measured key response variables at impact and control sites before and after the completion of the exclosure. Total N concentrations decreased in response to the exclusion. Over this short time period (1–2 y postrestoration), the combination of natural variability and exclusion of livestock grazing appeared to alter the vegetation and riparian conditions through increased bank stability and decreased % cover of exotic plant species. The effect of the exclosure on whirling disease was confounded by climatic variation. However, restoration appeared to reduce the prevalence of whirling disease during a nondrought year, but not during a drought year. Therefore, in the short term, these beneficial effects of restoration on trout appeared to hinge...
Databáze:	OpenAIRE
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