Document Type

Article

Journal/Book Title/Conference

Fisheries

Volume

21

Issue

6

Publisher

American Fisheries Society

Publication Date

1996

Keywords

simulated, growth, production, endangered, Snake River, sockeye salmon, assessing, lake management strategies, nursery lakes

First Page

18

Last Page

25

Abstract

We examined the potential of employing a series of lake management strategies to enhance production of endangered Snake River sockeye salmon (Oncorhynchus nerka) in its historical nursery lakes in central Idaho. We used a combination of limnological sampling, experimentation, and simulation modeling to assess effects of lake fertilization and kokanee reduction on growth and survival of juvenile sockeye salmon. Juvenile sockeye salmon from a broodstock of this endangered species are being introduced into the lakes from 1995 to 1998. Results of our analyses indicated that several lakes were suitable for receiving broodstock progeny. Field experimentation and simulation modeling indicated that lake fertilization, coupled with a program of kokanee reduction, provided the management option most likely to enhance the survival of stocked juvenile sockeye salmon. Simulation models that encompass physiological requirements, ecological interactions, and life-history consequences could be used as templates to help develop recovery plans for other endangered fishes.

Comments

Originally published by the American Fisheries Society. Posted here with permission. Note: Article originally appeared in Fisheries journal.

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