Photosynthetic rates of Antarctic sea-ice algaeEntry ID: ASAC_854
Abstract: From the abstract of one of the papers:
Oxygen microelectrodes were used to measure the photosynthetic rates of Antarctic fast ice algal mats. Using the oxygen flux across the diffusive boundary layer below the fast ice at Davis, a productivity range of 0-1.78mg C per square metre per hour was measured. This is at the lower end of fast ice productivity estimates and suggests that conventional ... carbon 14 techniques may overestimate sea ice algal mat productivity. Photosynthetic capacity (P max) approached 0.05 mg per C.(mg chlorophyl a) per hr. Onset of photosynthesis saturation, E k, was found at about 14 micromol photons per square metre per second. The irradiance of photoinhibition onset, E inh, was about 20 micromol photons per square metre per second and the irradiance at the compensation point, E c, was 4 micromol photons per square metre per second.
(Click for Interactive Map)
Start Date: 1995-10-26Stop Date: 1995-12-02
Access Constraints A PDF copy of the referenced paper is available for download from the provided URL to AAD staff only.
Use Constraints This data set conforms to the PICCCBY Attribution License
Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_854 when using these data.
Data Set Progress
Distribution Media: HTTP
Distribution Size: 1647 KB
Distribution Format: PDF
Role: TECHNICAL CONTACT
Role: DIF AUTHOR
Phone: +61 3 6266 2980
Fax: +61 3 6226 2973
Email: Andrew.McMinn at utas.edu.au
Institute of Antarctic and Southern Ocean Studies University of Tasmania Private Bag 77
Province or State: Tasmania
Postal Code: 7001
McMinn, A. and Ashworth, C. (1998), The use of oxygen microelectrodes to determine the net production by an Antarctic sea ice algal community., Antarctic Science, 10, 30-35
Creation and Review Dates
DIF Creation Date: 2000-08-08
Last DIF Revision Date: 2011-11-22