The Eastern Bering Sea Shelf The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder easternberingsea00hood Year: 1981 948 Plankton ecology 170°W - 60° N - 50° N Figure 57-1. Large-scale distributions of copepod indicator species in tiie Bering Sea (from Motoda and Minoda 1974). Geynrikh (1968) and Vinogradov and Arashkevich (1969) describe the role of the large herbivorous oceanic copepods in the northeast and northwest Pacific Ocean. The reproductive strategy of these species is cited as the principal mechanism promoting close interaction b
The Eastern Bering Sea Shelf The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder easternberingsea00hood Year: 1981 948 Plankton ecology 170°W - 60° N - 50° N Figure 57-1. Large-scale distributions of copepod indicator species in tiie Bering Sea (from Motoda and Minoda 1974). Geynrikh (1968) and Vinogradov and Arashkevich (1969) describe the role of the large herbivorous oceanic copepods in the northeast and northwest Pacific Ocean. The reproductive strategy of these species is cited as the principal mechanism promoting close interaction between the grazing community and the early spring plant stocks. Indeed, Parsons (1965) notes that because of the efficiency of this strategy (adults overwintering and reproducing in late winter without first having to feed), grazers in the form of young copepodids are present in great numbers at the time conditions become stabilized for the spring phytoplankton bloom, or before. In the resulting closely coordinated system, the bloom manifests itself at the level of primary con- sumers rather than producers. It is assumed that a similar relationship holds in the Bering Sea for the oceanic community composed of these same species. Even though the Bering Sea is the most productive region in the North Pacific Ocean (Bakkala and Smith 1978), there is little information on zoo- plankton production here. Ikeda and Motoda (1978) report respiratory, grazing, and growth requirements for zooplankton in four large areas of the Bering Sea and in waters south of the Aleutian chain, but only for summer stocks. The most recent studies of zooplankton and micronekton have been undertaken either in areas proposed for offshore petroleum development or those presently under heavy fishery exploitation, or both (Cooney 1976, 1977, 1978, 1979; Alexander and Cooney 1979). The oil-related investigations were funded by BLM/NOAA as simple baseline characterizations, whereas Processes and Resources
Size: 1759px × 1137px
Photo credit: © Bookworm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: archive, book, drawing, historical, history, illustration, image, page, picture, print, reference, vintage
