Macroplankton communities in Antarctic surface waters: spatial changes related to hydrography.

Piatkowski, Uwe (1989) Macroplankton communities in Antarctic surface waters: spatial changes related to hydrography. Open Access Marine Ecology Progress Series, 55 . pp. 251-259.

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Abstract

During the Anglo-German Antarctic expedition in February 1982 macroplankton was collected in the waters off the Antarctic Peninsula. Macroplankton compos~tions at 36 stations were
compared and degrees of similarity submitted to hierarchical cluster analysis. Results demonstrate strong spatial heterogeneity, which could be attributed to the different water masses in this region.
These dissimilarities demarcate 4 provinces, each characterized by a distinct macroplankton community:
(l) The 'Oceanic Community' comprises the stations influenced by the Westwind Drift; oceanic forms are typical (e.g. the hyperiid amphipod Vibilia antarctica, and the polychaete Vanadis antarctica).
(2) The 'Bellingshausen Water Community' is influenced by Bellingshausen Sea water and oceanic specles are scarce; large numbers of Antarctic krill Euphausja superba occur but shallow water forms are also abundant.
(3) The 'Nentic Community' consists of stations in the shelf water of the southern Bransfield Strait; it is charactenzed by postlarvae of several fish species, and meroplanktonic larvae of benthic forms. Large krill concentrations, however, are also encountered.
(4) A 'Transitional Community' exists in environments where various water masses mingle (e.g. at shelf slopes). This community lacks typical forms.

Document Type: Article
Research affiliation: OceanRep > GEOMAR > FB3 Marine Ecology > FB3-EV Marine Evolutionary Ecology
Refereed: Yes
Open Access Journal?: No
ISSN: 0171-8630
Date Deposited: 18 Feb 2008 17:27
Last Modified: 07 May 2018 13:16
URI: http://oceanrep.geomar.de/id/eprint/835

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