Weddell Sea Ecology: Results of EPOS European “Polarstern” by Hajo Eicken (auth.), Professor Dr. Gotthilf Hempel (eds.)

By Hajo Eicken (auth.), Professor Dr. Gotthilf Hempel (eds.)

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Extra resources for Weddell Sea Ecology: Results of EPOS European “Polarstern” Study

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Mar Bioi 96:93-106 Hopkins TL, Torres JJ (1988) The zooplankton community in the vicinity of the ice-edge, western Weddell Sea, March 1986. Polar Bioi 9:79-87 Hosie GW, Stolp M (1989) Krill and zooplankton in the western Prydz Bay region, September-November 1985. Proc NIPR Symp Polar Bioi 2:34-45 Hubold G, Hempel I, Meyer M (1988) Zooplankton communities in the southern Weddell Sea (Antarctica). Polar Bioi 8:225-233 Jazdzewski K, Kittel W, Lotocki K (1982) Zooplankton studies in the southern Drake Passage and in the Bransfield Strait during the austral summer (BIOMASS-FIBEX, February-March 1981).

1) 21 Table 5. 57 Evenness E5 remained very constant in all subareas and with regard to the low diversity this underlines the impact of the decreasing number of species and individuals in the zooplankton community directly under the closed packice cover. Conclusions and discussion The present investigation took place in an area where the pack-ice (Mackintosh 1972; Hopkins and Torres 1988) and the frontal zone of the Weddell Scotia Confluence WSC (Bogdanov et al. 1969; Maslennikov and Solyankin 1979; Patterson and Sievers 1980; Stein 1981; Foster and Middleton 1984) are the predominant environmental features.

A total number of 114 species was found by Hopkins and Torres (1988) in the oceanic region, while Hopkins (1985) reported 106 species for the neritic area of the Croker Passage, Antarctic Peninsula. On the other hand standing stock was only about a third to a half that measured for neritic areas such as the Peninsula (Hopkins 1985) and the Ross Sea (Hopkins 1987). Direct comparisons of absolute species and abundance data are difficult, because Hopkins and Torres (1988) integrated over 1000 m depth which encloses the mesopelagic community with high species diversity.

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