Rainbow Trout in a Regulated River below Glen Canyon Dam, Arizona, following Increased Minimum Flows and Reduced Discharge Variability
作者： Ted McKinney , David W. Speas , Roland S. Rogers , William R. Persons
DOI: 10.1577/1548-8675(2001)021<0216:RTIARR>2.0.CO;2
关键词: Tailwater 、 Environmental science 、 Fishery 、 Canyon 、 Relative species abundance 、 Water temperature 、 Animal science 、 Rainbow trout 、 Trout 、 Electrofishing
摘要: Abstract We examined the effects of dam operation on relative abundance and condition rainbow trout Oncorhynchus mykiss captured by electrofishing between 1991 1997 in Lee's Ferry tailwater below Glen Canyon Dam, Arizona. Higher minimum, higher mean, more stable flow releases from after provided conditions that supported greater trout. Though most length-classes increased following onset a stabilized regime, declined, particularly large (≥305 mm). Correlation analyses suggested small (<305 mm) were strongly influenced physical factors (flow variation, mean discharge, water temperature) than However, was negatively correlated with all trout, 305–405 mm length within ...
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