In situ net primary productivity and photosynthesis of Antarctic sea ice algal, phytoplankton and benthic algal communities
Primary production at Antarctic coastal sites iscontributed from sea ice algae, phytoplankton and benthicalgae. Oxygen microelectrodes were used to estimate seaice and benthic primary production at several sites aroundCasey, a coastal area in eastern Antarctica. Maximumoxygen export from sea ice was...
| Published in: | Marine Biology |
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| Main Authors: | , , , , , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Springer-Verlag
2010
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| Subjects: | |
| Online Access: | http://www.springerlink.com/content/ https://doi.org/10.1007/s00227-010-1414-8 http://ecite.utas.edu.au/67962 |
| Summary: | Primary production at Antarctic coastal sites iscontributed from sea ice algae, phytoplankton and benthicalgae. Oxygen microelectrodes were used to estimate seaice and benthic primary production at several sites aroundCasey, a coastal area in eastern Antarctica. Maximumoxygen export from sea ice was 0.95 mmol O2 m-2 h-1(*11.7 mg C m-2 h-1) while from the sediment it was6.08 mmol O2 m-2 h-1 (*70.8 mg C m-2 h-1). Whenthe ice was present O2 export from the benthos was eitherlow or negative. Sea ice algae assimilation rates were up to3.77 mg C (mg Chl-a)-1 h-1 while those from the benthoswere up to 1.53 mg C (mg Chl-a)-1 h-1. The contributionof the major components of primary productivity wasassessed using fluorometric techniques. When the ice waspresent approximately 5565% of total daily primary productionoccurred in the sea ice with the remainderunequally partitioned between the sediment and the watercolumn. When the ice was absent, the benthos contributednearly 90% of the primary production. |
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