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- W2793978049 abstract "MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 590:171-185 (2018) - DOI: https://doi.org/10.3354/meps12494 Spatial variation in potential and realized growth of juvenile Pacific cod in the southeastern Bering Sea Thomas P. Hurst1,*, Jessica A. Miller2, Nissa Ferm3, Ron A. Heintz4, Edward V. Farley4 1Fisheries Behavioral Ecology Program, Resource Assessment and Conservation Engineering Division, Alaska Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Hatfield Marine Science Center, Newport, OR 97165, USA 2Department of Fisheries and Wildlife, Coastal Oregon Marine Experiment Station, Hatfield Marine Science Center, Oregon State University, 2030 SE Marine Science Drive, Newport, OR 97365, USA 3Recruitment Processes Program, Resource Assessment and Conservation Engineering Division, Alaska Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, 7600 Sand Point Way NE, Seattle, WA 98115, USA 4Auke Bay Laboratories, Alaska Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, 17109 Point Lena Loop Road, Juneau, AK 99801, USA *Corresponding author: thomas.hurst@noaa.gov ABSTRACT: In the southeast Bering Sea, age-0 Pacific cod Gadus macrocephalus primarily occupy 2 distinct habitat types: shallow, coastal waters along the central Alaska Peninsula and surface waters over the broad continental shelf. We examined functional aspects of habitat use by describing regional and habitat-specific variation in feeding and growth energetics based on sampling conducted in late summer 2012. Diets varied among regions, with more benthic copepods, amphipods, and shrimps consumed in coastal regions and more pelagic copepods, krill, and pteropods consumed in surface waters over the shelf. Growth rates measured from otolith edge increments were highest along the Alaska Peninsula, the region supporting the highest density of age-0 cod. Interestingly, fish energetic condition was comparatively low in the region with the highest growth rates, suggesting a tradeoff between growth and energy storage. Water temperatures and prey energy densities were used with a bioenergetic model to derive spatially explicit estimates of growth potential. Growth potential was correlated with observed station-specific growth rates, providing an independent, empirical validation of the model. We also contrasted patterns of growth potential in 2012, a cold year in the Bering Sea, with those for 2005, a representative warm year. Growth potential was reduced in the warm year by up to 27%, and there was a shift in the region offering the highest growth potential. The observed thermally induced changes in growth potential, as well as the location of highest growth potential, may have significant implications for the recruitment of this important resource species under episodic or prolonged warming. KEY WORDS: Bering Sea · Growth rate · Bioenergetics · Nursery habitat · Diet Full text in pdf format Supplementary material PreviousNextCite this article as: Hurst TP, Miller JA, Ferm N, Heintz RA, Farley EV (2018) Spatial variation in potential and realized growth of juvenile Pacific cod in the southeastern Bering Sea. Mar Ecol Prog Ser 590:171-185. https://doi.org/10.3354/meps12494 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 590. Online publication date: March 12, 2018 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2018 Inter-Research." @default.
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- W2793978049 title "Spatial variation in potential and realized growth of juvenile Pacific cod in the southeastern Bering Sea" @default.
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