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- Title
Surface-associated diatoms from marine habitats at Cape Evans, Antarctica, including the first record of living Eunotogramma marginopunctatum.
- Authors
Sutherland, Donna L.
- Abstract
The diversity of diatom communities found epiphytically on red macroalgae collected under the sea ice at Cape Evans, Antarctica, was studied microscopically. Comparison of communities along a depth profile showed that species diversity decreased as depth below sea ice increased. Dominant taxa also changed with depth, with Cocconeis fasciolata dominant at 10 and 15 m, Porosira glacialis at 20 m and Eunotogramma marginopunctatum at 25 m. Epiphytic communities were also compared to sympagic and sediment-associated communities collected from a single depth. Species richness was greatest for communities associated with surface sediments while the poorest was found in sympagic, or sea-ice, communities. E. marginopunctatum, previously only described from fossil material, was found associated epiphytically on macroalgae from 20 to 25 m below sea ice.
- Subjects
ANTARCTICA; DIATOMS; PHYTOPLANKTON; ALGAE; DIATOMACEOUS earth; CENTRALES; PENNALES; NAVICULALES; OCEANOGRAPHY
- Publication
Polar Biology, 2008, Vol 31, Issue 7, p879
- ISSN
0722-4060
- Publication type
Article
- DOI
10.1007/s00300-008-0426-z