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The photosynthetic performance (photosynthesis response curves to light and water content at various temperatures) of the pale and dark forms of the lichen Usnea spacelata from Cape Royds
Entry ID: K024_1996_1997_NZ_4

Abstract: The photosynthetic performance of the fruticose lichen Usnea sphacelata was measured using advanced, climatised photosynthetic cuvettes at Scott Base. Individuals of the Usnea sp were identified and collected and their distribution recorded at Cape Royds. Two forms, a pale shade form and a dark sun form were identified. Specimens were removed and used for gas-exchange studies. Full photosynthetic response curves to light were obtained for the dark and pale forms at 10, 5, 0, -5 and -10C. A photosynthesis to thallus water content curve was also produced for both dark and pale forms.
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Description: Australian Antarctic Division Herbarium

Description: Australian Antarctic Division Herbarium
Geographic Coverage
Spatial coordinates   
  N: -77.56   S: -77.56   E: 166.17   W: 166.17

Data Set Citation
Version: Not provided
Temporal Coverage
Start Date: 1997-01-18
Stop Date: 1997-01-20
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Quality All data is held by the investigator. Please contact Professor Allan Green for more information.

The plant collections (~30,000 mosses, liverwort and lichens collected by Professor Rod Seppelt from Antarctica and sub-Antarctic Islands) are housed in the Australian Antarctic Division herbarium. This herbarium is being formerly transferred to the Tasmanian Herbarium. As ... View entire text
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Data Center
Antarctica New Zealand, New Zealand Antarctic Institute, New Zealand Supplemental Info
Data Center URL: http://www.antarcticanz.govt.nz/

Data Center Personnel
Phone: +64 3 358 0200
Fax: +64 3 358 0211
Email: s.gordon at antarcticanz.govt.nz
Contact Address:
Antarctica New Zealand
Private Bag 4745
City: Christchurch
Country: New Zealand
Phone: +64 7 838 4225
Fax: +64 7 838 4324
Email: greentga at waikato.ac.nz
Contact Address:
Department of Biological Sciences
University of Waikato
PO Box 3105
City: Hamilton
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Creation and Review Dates
DIF Creation Date: 2009-04-22
Last DIF Revision Date: 2018-10-04

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Responsible NASA Official:   Stephen Berrick
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