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Science 11 January 1985:
Vol. 227. no. 4683, pp. 163 - 166
DOI: 10.1126/science.227.4683.163
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Articles
Phytoplankton Bloom Produced by a Receding Ice Edge in the Ross Sea: Spatial Coherence with the Density Field
WALKER O. SMITH 1 and
DAVID M. NELSON 2
1 Botany Department and Graduate Program in Ecology, University of Tennessee, Knoxville-37996
2 College of Oceanography, Oregon State University, Corvallis 97331
Measurements of chlorophyll, particulate carbon, and biogenic silica concentrations near a receding ice edge off the coast of Victoria Land, Antarctica, indicated the presence of a dense phytoplankton bloom. The bloom extended 250 kilometers from the ice edge and was restricted to waters where the melting of ice had resulted in reduced salinity. The region involved was one of enhanced vertical stability, which may have favored phytoplankton growth, accumulation, or both. Epontic algae released from melting ice may have served as an inoculum for the bloom. Ratios of organic carbon to chlorophyll and biogenic silica to carbon were unusually high, resulting in high biogenic silica concentrations despite only moderately high chlorophyll levels.
Submitted on June 13, 1984
Accepted on October 11, 1984
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