Ecological impact of a large Antarctic iceberg

Details Ecological impact of a large Antarctic iceberg Ecological impact of a large Antarctic iceberg

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29g...8a&link_type=abstract

Geophysical Research Letters, Volume 29, Issue 7, pp. 8-1, CiteID 1104, DOI 10.1029/2001GL014160

Mathematics

Logic

18

Hydrology: Glaciology (1863), Oceanography: General: Arctic And Antarctic Oceanography, Oceanography: General: Remote Sensing And Electromagnetic Processes (0689)

Scientific paper

Satellite imagery has been used to document for the first time the potential for large icebergs to substantially alter the dynamics of a marine ecosystem. The B-15 iceberg (~10,000 km2), which calved off the Ross Ice Shelf in the biologically productive southwestern Ross Sea, Antarctica, restricted the normal drift of pack ice, resulting in heavier spring/summer pack ice cover than previously recorded. Extensive ice cover reduced both the area suitable for phytoplankton growth and the length of the algal growing season. Consequently, primary productivity throughout the region was >40% below normal, which changed both the abundance and behavior of upper trophic level organisms.

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