Pacific Southwest

Title: Effects of steelhead density on growth of Coho salmon in a small coastal California stream

Author: Harvey, Bret C.; Nakamoto, Rodney J.

Date: 1996

Source: Transactions, American Fisheries Society 125(2): 237-243.

Description: Abstract - Weight change in age-0 coho salmon, Oncorhynchus kisutch at about natural density was negatively related to the density of juvenile steelhead (anadromous rainbow trout O. mykiss) in a 6-week experiment conducted in July-August 1993 in the north and south forks of Caspar Creek, California. The experiment used 12 enclosed stream sections, each containing a pool and a portion of upstream riffle, with two replicates of three steelhead densities-zero, natural density (1X), and twice the natural density (2X)-on both the north and south forks. The natural density of coho salmon was about one-sixth the density of steelhead. Coho salmon survival was high (87% overall) and not related to treatments.

Keywords: PSW4351, Caspar Creek, coho salmon, steelhead density, salmonids, habitat partitioning

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Citation

Harvey, Bret C.; Nakamoto, Rodney J.  1996.  Effects of steelhead density on growth of Coho salmon in a small coastal California stream.   Transactions, American Fisheries Society 125(2): 237-243. .