Effects of Hydropeaking on Nearshore Habitat Use and Growth of Age-0 Rainbow Trout in a Large Regulated River
作者： Josh Korman , Steven E. Campana
DOI: 10.1577/T08-026.1
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摘要: Abstract We evaluated the effects of hourly variation in flow caused by power load following at Glen Canyon Dam (“hydropeaking”) on nearshore habitat use and growth age-0 rainbow trout Oncorhynchus mykiss downstream from dam Colorado River, Arizona. Reduction extent hydropeaking is a common element restoration efforts regulated rivers, but empirical support for such practice limited. Our assessment was based comparison abundance shoreline areas determined electrofishing different flows as well analysis otolith microstructure. The catch rates were least two- to fourfold higher daily minimum than maximum, indicating that most do not maintain their position within immediate when are high. A striping pattern, identified presence atypical increments formed every 7 d, evident over 50% 259 otoliths examined 2...
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