Expected declines in recruitment of walleye pollock (Theragra chalcogramma) in the eastern Bering Sea under future climate change
نویسندگان
چکیده
Franz J. Mueter 1*, Nicholas A. Bond2, James N. Ianelli 3, and Anne B. Hollowed3 School of Fisheries and Ocean Sciences, University of Alaska Fairbanks, Juneau, AK 99801, USA Joint Institute for the Study of the Atmosphere and Oceans, University of Washington, Seattle, WA 98195, USA National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Alaska Fisheries Science Center, 7600 Sand Point Way NE, Seattle, WA 98115, USA
منابع مشابه
A multispecies virtual population analysis of the eastern Bering Sea
The eastern Bering Sea shelf supports a large biomass of several groundfish populations, particularly walleye pollock (Theragra chalcogramma). The main trophic interactions between dominant groundfish populations in this region involve walleye pollock as prey. A multispecies virtual population analysis model (MSVPA) covering the period 1979–1995 has been parameterized for the eastern Bering Sea...
متن کاملNOAA Technical Memorandum NMFS - AFSC - 37 A Bioenergetics Model of Walleye Pollock ( Theragra chalcogramma ) in the Eastern Bering Sea : Structure and Documentation
. . . . . . . . . . . . . . . Introduction . . . . . . . . . . . . . . The Bioenergetics Model . . . . . . . . . . .
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Understanding mechanisms behind variability in early life survival of marine fishes through modeling efforts can improve predictive capabilities for recruitment success under changing climate conditions. Walleye pollock (Theragra chalcogramma) support the largest single-species commercial fishery in the United States and represent an ecologically important component of the Bering Sea ecosystem....
متن کاملClassification of Ovarian Stages of Walleye Pollock (Theragra chalcogramma)
Walleye pollock, Theragra chalcogramma, is the most commercially important species in the eastern Bering Sea. Estimates of maturity are critical for setting an appropriate harvest rate for pollock spawning biomass, and correct classification of ovaries into a maturity condition is necessary for accurate estimation of maturity. Data on length, weight, and ovary weight and condition were collecte...
متن کاملComparisons of Walleye Pollock, Theragra chalcogramma, Harvest to Steller Sea Lion, Eumetopias jubatus, Abundance in the Bering Sea and Gulf of Alaska
Steller sea lion, Eumetipias jubatus, counts made on rookeries in the Gulf of Alaska, Aleutian Islands, and the Bering Sea from 1976 to 1991 were compared to annual estimates of walleye pollock, Theragra Chalcogramma, harvest to examine possible relationships between Steller sea lion abundance and commercial pollock fishing. Comparisons were made between Steller sea lion counts and pollock fish...
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