Comparisons of Walleye Pollock, 'Theragra chalcogramma', Harvest to Steller SeaLion, 'Eumetopias jubatus', Abundance in the Bering Sea and Gulf of Alaska

摘要

Steller sea lion, Eumetopias jubatus, counts made on rookeries in the Gulf ofAlaska, 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 fishery data from the same year and from 1 to 5 years prior.