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Microdistributions, food resources and feeding habits of filter-feeding Trichoptera in the Upper Colorado River

Citation

Voelz, Neal J, and Ward, James V, Microdistributions, food resources and feeding habits of filter-feeding Trichoptera in the Upper Colorado River: .

Summary

A year-round study was conducted to examine feeding habits and food resources of the filter-feeding Trichoptera Arctopsyche grandis and Brachycentrus occidentalis along a regulated mountain stream gradient. There was a well defined longitudinal species replacement with A. grandis reaching maximum densities 2.3 kilometers below the impoundment, and concomitant with its decline downstream was an increase in B. occidentalis. At all sampling sites the < 75="" �m="" organic="" seston="" fraction="" usually="" consisted="" primarily="" of="" diatoms="" (="">70%, by areal estimate on microscope slides), whereas the 75?250 �m and > 250 �m seston fractions were predominantly composed of detritus (> 80 %). B. occidentalis larvae consumed primarily [...]

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  • Upper Colorado River Basin

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From Source - Mendeley RIS Export <br> On - Wed Sep 19 08:08:31 MDT 2012

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Title Citation Microdistributions, food resources and feeding habits of filter-feeding Trichoptera in the Upper Colorado River

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