||Effects of Canopy Modification and Accumulated Sediment on Stream Communities.
Murphy, Michael L. ;
Hawkins, Charles P. ;
Anderson, N. H. ;
||Oregon State Univ., Corvallis.;Corvallis Environmental Research Lab., OR.
Animal ecology ;
Stream pollution ;
Forest land ;
Primary biological productivity ;
Ecological succession ;
Cascade Mountains ;
Trophic level ;
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Small streams differing in sediment composition were compared in logged and forested reaches to determine effects of accumulated fine sediment on stream communities under different trophic conditions. Three stages of forest community succession were studied in the Cascade Mountains: recently clear-cut area without forest canopy (5-10 years after logging); second-growth forest (30-40 years after logging); and old-growth coniferous forest (450 years old).