Biological observations in the marginal ice zone of the East Greenland Sea.

S. L. Smith, W. O. Smith, L. A. Codispoti, D. L. Wilson

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83 Scopus citations

Abstract

During summer, 1983, nutrient levels, especially inorganic N, were extremely low, and probably limited the growth of phytoplankton. An ammonium maximum at the base of the euphotic zone, generally around 50 m, appeared to be controlled by active N regeneration and decreased ammonium uptake at low light levels. Chlorophyll a levels were elevated at the ice-edge, but were even higher in an area influenced by an eddy. Species of zooplankton were accurate indicators of the origin of the 2 major water masses in this area; zooplanktonic biomass was similar to other polar regions. Grazing losses resulting from ingestion by large copepods may have been small. The dynamics associated with mesoscale eddies appear to be important in introducing new nitrogen into the euphotic zone and structuring the distribution of plant biomass.-from Authors

Original languageEnglish (US)
Pages (from-to)693-717
Number of pages25
JournalJournal of Marine Research
Volume43
Issue number3
DOIs
StatePublished - Jan 1 1985

ASJC Scopus subject areas

  • Oceanography

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