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Biological and environmental covariates of juvenile sockeye salmon distribution and abundance in the southeastern Bering Sea, 2002-2018
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  • Ellen Yasumiishi,
  • Curry Cunningham,
  • Ed Farley,
  • Lisa Eisner,
  • Wesley Strasburger,
  • John Dimond,
  • Paul Irvin
Ellen Yasumiishi
NOAA Fisheries Auke Bay Laboratories

Corresponding Author:[email protected]

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Curry Cunningham
University of Alaska Fairbanks College of Fisheries and Ocean Sciences
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Ed Farley
NOAA Fisheries Alaska Fisheries Science Center
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Lisa Eisner
NOAA Fisheries Alaska Fisheries Science Center
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Wesley Strasburger
NOAA Fisheries Alaska Fisheries Science Center
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John Dimond
NOAA Fisheries Alaska Fisheries Science Center
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Paul Irvin
NOAA Fisheries Alaska Fisheries Science Center
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Abstract

Climate change is altering the distribution and abundance of marine species, especially in Arctic and sub-Arctic regions. In the eastern Bering Sea, home of the world’s largest run of sockeye salmon (Oncorhynchus nerka), juvenile sockeye salmon abundance has increased and their migration path shifted north with warming, 2002-2018. For these sockeye salmon, we quantify environmental and biological covariate effects within spatio-temporal species distribution models. Spatio-temporally, with respect to juvenile sockeye salmon densities: 1) sea surface temperature had a nonlinear effect, 2) Calanus, a minor prey item, and age-0 pollock (Gadus chalcogrammus), a major prey item during warm years, had no significant effect, and 3) juvenile pink salmon (Oncorhynchus gorbuscha) had a positive linear effect on juvenile sockeye salmon densities. Temporally, juvenile sockeye salmon abundance was positively correlated with sea surface temperature, age-0 pollock abundances, and juvenile pink salmon abundance. Changes in population dynamics of sockeye salmon in response to environmental have potential implications for projecting specific future food securities and management of fisheries in Arctic waters.
10 Jul 2023Submitted to Ecology and Evolution
17 Jul 2023Assigned to Editor
17 Jul 2023Submission Checks Completed
21 Jul 2023Reviewer(s) Assigned
08 Aug 2023Review(s) Completed, Editorial Evaluation Pending
14 Aug 2023Editorial Decision: Revise Minor