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Composition and succession of dinoflagellates and chrysophytes in the upper fast ice of Davis Station, East Antarctica

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Thompson, PG and McMinn, A and Kiesling, I and Watson, M and Goldsworthy, PM (2006) Composition and succession of dinoflagellates and chrysophytes in the upper fast ice of Davis Station, East Antarctica. Polar Biology, 29. pp. 337-345. ISSN 0722-4060 (Print) 1432-2056 (Online)

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Abstract

Little is known of the wider Antarctic distribution of the upper fast ice community now comprehensivelydescribed from McMurdo Sound. We determined the fast ice protist community at Davis Station, East Antarctica and compared it with that of McMurdo Sound. As at McMurdo Sound, Davis fast ice is characterised by extreme and transitory salinities (96–2.5 psu) and temperatures (4.5 to 0.1C) during the spring/summer transition. Both communities are dominated by Polarella glacialis (an autotrophic dinoflagellate), chrysophytes and their life cycle stages. Furthermore, the physical parameters of brine temperature and salinity at which these successions occurred approximated those of McMurdo Sound. The high degree of similarity between the communities from the geographically disparate locations indicates that this community type has a circum-Antarctic distribution. Confirming the areal extent and seasonality of this community type will assist in future predictions of sea ice productivity.

Item Type: Article
Journal or Publication Title: Polar Biology
Page Range: pp. 337-345
ISSN: 0722-4060 (Print) 1432-2056 (Online)
Identification Number - DOI: 10.1007/s00300-005-0060-y
Additional Information: The final publication is available at http://www.springerlink.com
Date Deposited: 24 Nov 2011 23:49
Last Modified: 18 Nov 2014 04:24
URI: http://eprints.utas.edu.au/id/eprint/12253
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