. The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder. Oceanography Bering 1252 Benthic biology 180' 175' 170° 165° 160° 155°. 175 170° 165° 160° Figure 69-13. Quantitative distribution of the cockle Clinocardium ciliatum in the southeastern Bering Sea, 1975-76. Many studies have been conducted on predator- prey interactions in marine ecosystems, but such studies have seldom been directly used to interpret the effect of human harvest of ocean products. Management of meirine fisheries is typically predi- cated on the use of such tools as
. The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder. Oceanography Bering 1252 Benthic biology 180' 175' 170° 165° 160° 155°. 175 170° 165° 160° Figure 69-13. Quantitative distribution of the cockle Clinocardium ciliatum in the southeastern Bering Sea, 1975-76. Many studies have been conducted on predator- prey interactions in marine ecosystems, but such studies have seldom been directly used to interpret the effect of human harvest of ocean products. Management of meirine fisheries is typically predi- cated on the use of such tools as recruitment, growth, stock assessment, and catch-per-unit-effort. The resolution and improvement of these management tools may, in part, be brought about as we increase our understanding of the dynamics of c£irbon flow in the Bering Sea. Humans, the top consumers in the Bering Sea food web, play a significant role in the welfare of many species. The overexploitation and decline of pink shrimp, yellowfin sole, Pacific ocean perch. Pacific herring, and Pacific halibut have been documented (Pruter 1973, 1976). The recent trend of decline in the average size of walleye pollock is also directly attributable to fishing pressures (Pereyra et al. 1976). Stocks of at least four species of marine mammals (Pacific walrus, ribbon seal, fur seal, and sea otter) have been significantly reduced in the past by over- harvesting (Fay 1957, Chapman 1961, Shustov 1967, Schneider, Chapter 51, this volume). It is expected that competition between humans and marine mammals for resources of commercial importance will continue to intensify. The Marine Mammal Protection Act and the Fishery Conservation and Management Act were passed in an effort to achieve a balanced management plan for marine mammals and fisheries Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrati
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