Northwest Fisheries Science Center

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Document Type: Journal Article
Center: NWFSC
Document ID: 7440
Title: Linking recruitment synchrony to environmental variability
Author: Megan M. Stachura, T. E. Essington, Nathan Mantua, A. B. Hollowed, M. A. Haltuch, Paul Spencer, Trevor A. Branch, M. J. Doyle
Publication Year: 2014
Journal: Fisheries Oceanography
Volume: 23
Issue: 5
Pages: Pages 389457
DOI: DOI: 10.1111/fog.12066
Keywords: recruitment,synchrony,environment,Bayesian,Northeast Pacific Ocean,

We investigated the hypothesis that synchronous recruitment is due to a shared susceptibility to environmental processes using stock-recruitment residuals for 52 marine fish stocks within three Northeast Pacific large marine ecosystems: the Eastern Bering Sea and Aleutian Islands (BSAI), Gulf of Alaska, and California Current. There was moderate coherence in terms of exceptionally strong and weak year classes and significant distributions of across stock correlation. Based on evidence of synchrony from these analyses, we used Bayesian hierarchical models to relate recruitment to environmental covariates for groups of stocks with similar susceptibility to environmental processes.

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Theme: Ecosystem approach to improve management of marine resources
Foci: Understand how climate influences ecosystem variability.