Seven U.S. Fish and Wildlife Stream Channelization Studies

摘要

This report synthesizes information developed in studies on the effects of stream channelization on fish and wildlife populations and habitats conducted in Iowa, Vermont, Montana, North Carolina, Ohio, Indiana, Wisconsin and Mississippi from 1973 to 1977. The studies were developed for use in impact assessment and for the development of mitigation methods. Major physical effects-of-channelization found were: decreases in sinuosity and stream length; increases in gradient and flow rates, and decreases in particle sizes in stream bottom substrates. Effects on macroinvertebrate abundance and diversity, fish numbers and biomass, mammal and bird populations, reptile and amphibian abundance and diversity are all discussed.