Avoidance of Suspended Sediment by Juvenile Coho Salmon
- 1 October 1982
- journal article
- Published by Oxford University Press (OUP) in North American Journal of Fisheries Management
- Vol. 2 (4) , 371-374
- https://doi.org/10.1577/1548-8659(1982)2<371:aossbj>2.0.co;2
Abstract
Some water quality standards established by the states permit only minor increases in suspended sediment when background turbidity is low, allow greater absolute increases as background levels rise, and do not consider acclimation of stream biota to high turbidity. Juvenile coho salmon (Oncorhynchus kisutch) were subjected to experimentally elevated concentrations of suspended sediment and did not avoid moderate turbidity increases when background levels were low, but exhibited significant avoidance when turbidity exceeded a threshold that was relatively high (>70 NTU) and was varied according to previous suspended sediment exposure.Keywords
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