Title

Effects of river flow on abundance of young Chinook salmon, American shad, longfin smelt, and delta smelt in the Sacramento-San Joaquin River system

Publication Date

1983

Keywords

chinook, salmon, American shad, shad, smelt, flow rates, flow rate, spawning

Journal or Book Title

North American Journal of Fisheries Management

Abstract

Annual abundance indices for young fall-run Chinook salmon (Oncorhynchustshawytscha), American shad (Alosa sapidissima), and longfin smelt (Spirinchus thaleichthys)increased directly with river flow rates during the spawning and nursery periods. Annualabundance of young delta smelt (Hypomesus transpacificus) did not vary with river flow. Severalfactors associated with flow could explain the relationships described for Chinook salmon,American shad, and longfin smelt. The one factor common to all affected species was thatdispersal of young increases when flows increase, which probably results in decreased densitydependentmortality.

Pages

425-437

Volume

3

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