Feeding Habits, Food Requirements, and Status of Bering Sea Marine Mammals
FEEDING HABITS, FOOD REQUIREMENTS, AND STATUS OF BERING SEA MARINE MAMMALS NORTH PACIFIC FISHERY MANAGEMENT COUNCIL P. 0. Box 103136 ANCHORAGE, ALASKA 99510 November 1, 1982 Cotmcil Document 1119 Prepared By Alaska Department of Fish and Game Fairbanks, Alaska Alaska Department of Fish and Gaine Anchorage, Alaska and University of Washington Seattle, Washington Ftmded by NOAA/NMFS 1.0 TITLE PAGE FINAL REPORT TO; North Pacific Fishery Management Co1mcil P.O. Box 3136 DT Anchorage, Alaska 99510 CONTRACT NO.: 81-4 TITLE: FEEDING HABITS, FOOD REQUIREMENTS, AND STATUS OF BERING SEA MARINE MAMMALS PRINCIPAL INVESTIGATORS: Lloyd F. Lowryl, Kathryn J. Frostl, Donald G. Calkins2i Gordon L. Swartzman3, and Susan Hills 1 November 1982 1 Alaska Department of Fish and Game, 1300 College Road, Fairbanks, Alaska 99701 2 Alaska Department of Fish and Game, 333 Raspberry Road, Anchorage Alaska 99502 3 University of Washington, Center for Quantitative Science, Seattle, Washington 98195 2 2 .O PREFACE The history of human interaction with marine resources shows a consistent pattern of discovery and overexploitation, usually followed by programs of conservation or protection which often result in recovery of depleted stocks. This pattern applies equally well to populations of fishes, shellfishes, and marine mammals. Although many aspects of population ecology of exploited species are poorly known, there is little doubt that human intervention has been a major factor in most population declines. Observations made during exploitation and subsequent recovery of stocks have provided a considerable body of empirical information which has formed the basis for management programs applied to commercial marine resources. Such single-species management, although preferable to unregulated exploitation, has limited utility since each species obviously interacts with many other organisms and environmental factors.
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