Photosynthetic rates of Antarctic sea-ice algae
Progress Code: completed 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...
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ftands:oai:ands.org.au::2821101 2023-12-03T10:11:22+01:00 Photosynthetic rates of Antarctic sea-ice algae Spatial: westlimit=77; southlimit=-68.7; eastlimit=79; northlimit=-68.5 Temporal: From 1995-10-26 to 1995-12-02 https://researchdata.edu.au/photosynthetic-rates-antarctic-ice-algae/2821101 unknown Australian Ocean Data Network https://researchdata.edu.au/photosynthetic-rates-antarctic-ice-algae/2821101 ASAC_854 AU/AADC > Australian Antarctic Data Centre, Australia biota oceans EARTH SCIENCE > CRYOSPHERE > SEA ICE > PACK ICE OCEANS > BIOLOGICAL CLASSIFICATION > PLANTS > MICROALGAE PLANTS OCEAN CHEMISTRY > PIGMENTS > CHLOROPHYLL BIOSPHERE > ECOLOGICAL DYNAMICS > ECOSYSTEM FUNCTIONS > PHOTOSYNTHESIS ANTARCTIC ANTARCTICA DAVIS FAST ICE OXYGEN MICROELECTRODES PHOTSYNTHESIS SEA ICE ALGAE OXYGEN ANALYZERS OXYGEN METERS AMD/AU CEOS AMD CONTINENT > GEOGRAPHIC REGION > POLAR dataset ftands 2023-11-06T23:51:52Z Progress Code: completed 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. Dataset Antarc* Antarctic Antarctica ice algae Sea ice Research Data Australia (Australian National Data Service - ANDS) Antarctic |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
biota oceans EARTH SCIENCE > CRYOSPHERE > SEA ICE > PACK ICE OCEANS > BIOLOGICAL CLASSIFICATION > PLANTS > MICROALGAE PLANTS OCEAN CHEMISTRY > PIGMENTS > CHLOROPHYLL BIOSPHERE > ECOLOGICAL DYNAMICS > ECOSYSTEM FUNCTIONS > PHOTOSYNTHESIS ANTARCTIC ANTARCTICA DAVIS FAST ICE OXYGEN MICROELECTRODES PHOTSYNTHESIS SEA ICE ALGAE OXYGEN ANALYZERS OXYGEN METERS AMD/AU CEOS AMD CONTINENT > GEOGRAPHIC REGION > POLAR |
spellingShingle |
biota oceans EARTH SCIENCE > CRYOSPHERE > SEA ICE > PACK ICE OCEANS > BIOLOGICAL CLASSIFICATION > PLANTS > MICROALGAE PLANTS OCEAN CHEMISTRY > PIGMENTS > CHLOROPHYLL BIOSPHERE > ECOLOGICAL DYNAMICS > ECOSYSTEM FUNCTIONS > PHOTOSYNTHESIS ANTARCTIC ANTARCTICA DAVIS FAST ICE OXYGEN MICROELECTRODES PHOTSYNTHESIS SEA ICE ALGAE OXYGEN ANALYZERS OXYGEN METERS AMD/AU CEOS AMD CONTINENT > GEOGRAPHIC REGION > POLAR Photosynthetic rates of Antarctic sea-ice algae |
topic_facet |
biota oceans EARTH SCIENCE > CRYOSPHERE > SEA ICE > PACK ICE OCEANS > BIOLOGICAL CLASSIFICATION > PLANTS > MICROALGAE PLANTS OCEAN CHEMISTRY > PIGMENTS > CHLOROPHYLL BIOSPHERE > ECOLOGICAL DYNAMICS > ECOSYSTEM FUNCTIONS > PHOTOSYNTHESIS ANTARCTIC ANTARCTICA DAVIS FAST ICE OXYGEN MICROELECTRODES PHOTSYNTHESIS SEA ICE ALGAE OXYGEN ANALYZERS OXYGEN METERS AMD/AU CEOS AMD CONTINENT > GEOGRAPHIC REGION > POLAR |
description |
Progress Code: completed 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. |
format |
Dataset |
title |
Photosynthetic rates of Antarctic sea-ice algae |
title_short |
Photosynthetic rates of Antarctic sea-ice algae |
title_full |
Photosynthetic rates of Antarctic sea-ice algae |
title_fullStr |
Photosynthetic rates of Antarctic sea-ice algae |
title_full_unstemmed |
Photosynthetic rates of Antarctic sea-ice algae |
title_sort |
photosynthetic rates of antarctic sea-ice algae |
publisher |
Australian Ocean Data Network |
url |
https://researchdata.edu.au/photosynthetic-rates-antarctic-ice-algae/2821101 |
op_coverage |
Spatial: westlimit=77; southlimit=-68.7; eastlimit=79; northlimit=-68.5 Temporal: From 1995-10-26 to 1995-12-02 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica ice algae Sea ice |
genre_facet |
Antarc* Antarctic Antarctica ice algae Sea ice |
op_source |
AU/AADC > Australian Antarctic Data Centre, Australia |
op_relation |
https://researchdata.edu.au/photosynthetic-rates-antarctic-ice-algae/2821101 ASAC_854 |
_version_ |
1784277616370384896 |