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A simulated Antarctic fast ice ecosystemA 2D numerical ecosystem model of Antarctic land fast ice is developed to elucidate the primary production with the Antarctic sea ice zone. The physical component employs atmospheric data to simulate congelation ice growth, initial brine entrapment, desalination, and nutrient flux. The biological component is based on the concept of a maximum temperature-dependent algal growth rate which is reduced by limitations imposed from insufficient light or nutrients, as well as suboptimal salinity. Preliminary simulations indicate that, during a bloom, microalgae are able to maintain their vertical position relative to the lower congelation ice margin and are not incorporated into the crystal matrix as the ice sheet thickens. It is inferred that land fast sea ice contains numerous microhabitats that are functionally distinct based upon the unique set of processes that control microalgal growth and accumulation within each.
Document ID
19930051760
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Arrigo, Kevin R.
(Southern California Univ., Los Angeles, CA; NASA, Goddard Space Flight Center Greenbelt, MD, United States)
Kremer, James N.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Sullivan, Cornelius W.
(Southern California Univ. Los Angeles, CA, United States)
Date Acquired
August 16, 2013
Publication Date
April 15, 1993
Publication Information
Publication: Journal of Geophysical Research
Volume: 98
Issue: C4
ISSN: 0148-0227
Subject Category
Oceanography
Accession Number
93A35757
Funding Number(s)
CONTRACT_GRANT: NSF DPP-81-7237
CONTRACT_GRANT: NSF DPP-87-17692
Distribution Limits
Public
Copyright
Other

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