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Microbial mat development and production variation in relation to physio-chemical variation in 13 ponds that all originated from one greater pond near Bratina Island on the McMurdo Ice Shelf Entry ID: K081_2005_2006_NZ_1 |
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Summary
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Abstract:
Microbial mat development and production varies from pond to pond due to the physio-chemical variation amongst the ponds. To study this variation a series of 13 ponds were selected that had originated from one greater pond which had drained due to a tide crack opening up. Cores of microbial mats were collected from all 13 ponds for particulate nutrient and pigment analyses, biomass determination and species composition. Surface water samples from 13 ponds were also collected for phytoplankton, chlorophyll a, particulate nutrients and dissolved nutrient analysis. Photosynthesis and nitrogen fixation experiments were conducted on microbial mats collected from 7 ponds. Conductivity and pH measurements, coupled with gross mat morphology were used to select the most contrasting ponds. Collected samples were experimented on and the photosynthesis and respiration rates were determined by measuring the rate of evolution or consumption of oxygen using oxygen electrodes. Samples for dissolved inorganic carbon uptake were taken and injected into vacuette tubes for analysis. Nitrogen fixation was determined and gas samples from the nitrogen fixation were then collected for analysis by gas chromatography.
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Related URL
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Link:
VIEW PROJECT HOME PAGE
Description: National Institute for Water and Atmospheric Research (NIWA) |
Geographic Coverage
| N: -78.0 | S: -78.0 | E: 165.3333 | W: 165.3333 |
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Temporal Coverage
| Start Date: 2005-12-19 |
| Stop Date: 2005-12-28 |
Location Keywords
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CONTINENT
> ANTARCTICA
CONTINENT > ANTARCTICA > BRATINA ISLAND GEOGRAPHIC REGION > POLAR |
Science Keywords
| BIOSPHERE >TERRESTRIAL ECOSYSTEMS >WETLANDS [Definition] |
| TERRESTRIAL HYDROSPHERE >WATER QUALITY/WATER CHEMISTRY >CONDUCTIVITY [Definition] |
| TERRESTRIAL HYDROSPHERE >WATER QUALITY/WATER CHEMISTRY >PH [Definition] |
| BIOLOGICAL CLASSIFICATION >BACTERIA/ARCHAEA >CYANOBACTERIA (BLUE-GREEN ALGAE) [Definition] |
| BIOLOGICAL CLASSIFICATION >PLANTS >MICROALGAE [Definition] |
| BIOSPHERE >ECOLOGICAL DYNAMICS >ECOSYSTEM FUNCTIONS >NUTRIENT CYCLING [Definition] |
| BIOSPHERE >ECOLOGICAL DYNAMICS >ECOSYSTEM FUNCTIONS >PHOTOSYNTHESIS [Definition] |
| BIOSPHERE >ECOLOGICAL DYNAMICS >ECOSYSTEM FUNCTIONS [Definition] |
ISO Topic Category
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BIOTA
INLAND WATERS |
Project
| LTER >Long-Term Ecological Research [Information] |
| LGP >Latitudinal Gradient Project [Information] |
| EBA >Evolution and Biodiversity in the Antarctic [Information] |
Data Set Progress
| COMPLETE |
Data Center
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Antarctica New Zealand, New Zealand Antarctic Institute, New Zealand
[Information]
Data Center URL: http://www.antarcticanz.govt.nz/
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Personnel
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BRIAN
SORRELL Role: INVESTIGATOR Phone: +64 3 343 7802 Fax: +64 3 348 5548 Email: b.sorrell at niwa.co.nz Contact Address: NIWA PO BOX 11-115 City: Christchurch Country: New Zealand |
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IAN
HAWES Role: INVESTIGATOR Email: AquaticResearchSolutions at gmail.com Email: ian.hawes at canterbury.ac.nz Contact Address: Waterways Centre for Freshwater Management University of Canterbury City: Christchurch Country: New Zealand |
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CLIVE
HOWARD-WILLIAMS Role: INVESTIGATOR Phone: +64 3 343 7857 Fax: +64 3 348 5548 Email: c.howard-williams at niwa.co.nz Contact Address: NIWA PO BOX 8602 City: Christchurch Country: New Zealand |
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CEISHA
POIROT Role: DIF AUTHOR Phone: +64 3 358 0200 Fax: +64 3 358 0211 Email: c.poirot at antarcticanz.govt.nz Contact Address: Antarctica New Zealand Private Bag 4745 City: Christchurch Country: New Zealand |
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SHULAMIT
GORDON Role: DIF AUTHOR 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 |
Publications/References
Jungblut, A.D. and Neilan, B.A. 2010. NifH gene diversity and expression in a microbial mat community on the McMurdo Ice Shelf, Antarctica. Antarctic Science 22(2): 117-122.
Howard-Williams, C. Hawes, I. Ecological processes in Antarctic inland waters: interactions between physical processes and the nitrogen cycle. Antarctic science 19(2): 205-217, 2007.
Sutherland, D.L. Microbial mat communities in response to recent changes in the physiochemical environment of the meltwater ponds on the McMurdo Ice Shelf, Antarctica. Polar biology 32:1023-1032 2009. doi: 10.1007/s00300-009-0601-x
Howard-Williams, C. Hawes, I. Ecological processes in Antarctic inland waters: interactions between physical processes and the nitrogen cycle. Antarctic science 19(2): 205-217, 2007.
Sutherland, D.L. Microbial mat communities in response to recent changes in the physiochemical environment of the meltwater ponds on the McMurdo Ice Shelf, Antarctica. Polar biology 32:1023-1032 2009. doi: 10.1007/s00300-009-0601-x
Creation and Review Dates
DIF Creation Date:
2008-10-06
Last DIF Revision Date:
2010-08-30
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