Effects of fine sediments and substrate size on growth of juvenile coho salmon in laboratory streams

Content Provider	Semantic Scholar
Author	Crouse, M. R.
Copyright Year	1981
Abstract	approved: Charles E. Warren The production (tissue elaboration) of juvenile coho salmon' (Oncorhyncus kisutch) was monitored in 12 laboratory streams having six treatment levels of fine sediments and in six laboratory streams having six different substrate particle sizes. Fish production decreased with increases in sedimentation and with decreases in substrate size. Lower fish production in streams with high sediment levels was apparently caused by lower levels of food organisms. Lower fish production in the substrate experiments was related to water velocity and food supply. Substrate Score, based on a visual technique for evaluating stream substrate quality, was found to be highly correlated with geometric mean particle size of the substrate and with fish production. Substrate Score may be useful for assessing substrate quality of salmonid rearing Redacted for privacy and spawning areas. The results of the sedimentation experiments suggest that protection against fine sediments should be considered for juvenile habitat as well as for spawning areas. The results of the substrate experiments indicate that the use of cobble sized gravel in artificial rearing channels may optimize juvenile fish production. Effects of Fine Sediments and Substrate Size on Growth of Juvenile Coho Salmon in Laboratory Streams
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://ir.library.oregonstate.edu/downloads/2r36v1296?locale=en
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article