Data

Photosynthetic rates of Antarctic sea-ice algae

Australian Ocean Data Network
McMinn, A. ; MCMINN, ANDREW
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=http://catalogue-aodn.prod.aodn.org.au/geonetwork/srv/eng/search?uuid=ASAC_854&rft.title=Photosynthetic rates of Antarctic sea-ice algae&rft.identifier=http://catalogue-aodn.prod.aodn.org.au/geonetwork/srv/eng/search?uuid=ASAC_854&rft.publisher=Australian Antarctic Data Centre&rft.description=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.Progress Code: completed&rft.creator=McMinn, A. &rft.creator=MCMINN, ANDREW &rft.date=2000&rft.coverage=westlimit=77; southlimit=-68.7; eastlimit=79; northlimit=-68.5&rft.coverage=westlimit=77; southlimit=-68.7; eastlimit=79; northlimit=-68.5&rft_rights=This metadata record is publicly available.&rft_rights=A PDF copy of the referenced paper is available for download from the provided URL to AAD staff only.&rft_rights= https://creativecommons.org/licenses/by/4.0/legalcode&rft_rights=This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). 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. http://creativecommons.org/licenses/by/4.0/).&rft_rights=Portable Network Graphic&rft_rights=https://i.creativecommons.org/l/by/3.0/88x31.png&rft_rights=Creative Commons by Attribution logo&rft_rights=Attribution 4.0 International (CC BY 4.0)&rft_rights=Legal code for Creative Commons by Attribution 4.0 International license&rft_rights=Attribution 4.0 International (CC BY 4.0)&rft_rights= https://creativecommons.org/licenses/by/4.0/legalcode&rft_subject=biota&rft_subject=oceans&rft_subject=EARTH SCIENCE > CRYOSPHERE > SEA ICE > PACK ICE&rft_subject=EARTH SCIENCE > OCEANS > SEA ICE > PACK ICE&rft_subject=EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > PLANTS > MICROALGAE&rft_subject=EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > PLANTS&rft_subject=EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PIGMENTS > CHLOROPHYLL&rft_subject=EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > ECOSYSTEM FUNCTIONS > PHOTOSYNTHESIS&rft_subject=ANTARCTIC&rft_subject=ANTARCTICA&rft_subject=DAVIS&rft_subject=FAST ICE&rft_subject=OXYGEN MICROELECTRODES&rft_subject=PHOTSYNTHESIS&rft_subject=SEA ICE ALGAE&rft_subject=OXYGEN ANALYZERS&rft_subject=OXYGEN METERS&rft_subject=AMD/AU&rft_subject=CEOS&rft_subject=AMD&rft_subject=CONTINENT > ANTARCTICA&rft_subject=GEOGRAPHIC REGION > POLAR&rft.type=dataset&rft.language=English Access the data
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This data set conforms to the CCBY Attribution License
(http://creativecommons.org/licenses/by/4.0/).

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.
http://creativecommons.org/licenses/by/4.0/).

Attribution 4.0 International (CC BY 4.0)

https://creativecommons.org/licenses/by/4.0/legalcode

This metadata record is publicly available.

A PDF copy of the referenced paper is available for download from the provided URL to AAD staff only.

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Brief description

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.

Lineage

Progress Code: completed

Data time period: 1995-10-26 to 1995-12-02

79,-68.5 79,-68.7 77,-68.7 77,-68.5 79,-68.5

78,-68.6

text: westlimit=77; southlimit=-68.7; eastlimit=79; northlimit=-68.5

Subjects
AMD | AMD/AU | ANTARCTIC | ANTARCTICA | CEOS | CONTINENT > ANTARCTICA | DAVIS | EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > PLANTS | EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > PLANTS > MICROALGAE | EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > ECOSYSTEM FUNCTIONS > PHOTOSYNTHESIS | EARTH SCIENCE > CRYOSPHERE > SEA ICE > PACK ICE | EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PIGMENTS > CHLOROPHYLL | EARTH SCIENCE > OCEANS > SEA ICE > PACK ICE | FAST ICE | GEOGRAPHIC REGION > POLAR | OXYGEN ANALYZERS | OXYGEN METERS | OXYGEN MICROELECTRODES | PHOTSYNTHESIS | SEA ICE ALGAE | biota | oceans |

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  • global : ASAC_854
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