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Effects of Fine Sediments on Growth of Juvenile Coho Salmon in Laboratory Streams
Author(s) -
Crouse M. R.,
Callahan C. A.,
Malueg K. W.,
Dominguez S. E.
Publication year - 1981
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/1548-8659(1981)110<281:eofsog>2.0.co;2
Subject(s) - oncorhynchus , streams , juvenile , substrate (aquarium) , sedimentation , replicate , fish <actinopterygii> , fishery , environmental science , biology , ecology , sediment , computer network , paleontology , statistics , mathematics , computer science
Juvenile coho salmon (Oncorhynchus kisutch) production (tissue elaboration) was monitored in 12 laboratory streams under six replicate treatment levels of fine sedimentation. Increasing sedimentation suppressed fish production. Our data confirm that habitats of salmonid juveniles, as well as spawning areas, should be protected against fine sediments. Substrate Score, a visual technique for evaluating stream substrate quality, correlated closely with both the geometric mean particle size of the substrate and fish production, and can be easily applied in the field.