Photosynthetic rates of Antarctic sea-ice algae
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 measu...
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Online Access: | https://researchdata.ands.org.au/photosynthetic-rates-antarctic-ice-algae/700323 https://data.aad.gov.au/metadata/records/ASAC_854 http://nla.gov.au/nla.party-617536 |
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ftands:oai:ands.org.au::700323 2023-05-15T13:46:58+02:00 Photosynthetic rates of Antarctic sea-ice algae MCMINN, ANDREW (hasPrincipalInvestigator) MCMINN, ANDREW (processor) Australian Antarctic Data Centre (publisher) Spatial: northlimit=-68.5; southlimit=-68.7; westlimit=77.0; eastLimit=79.0; projection=WGS84 Temporal: From 1995-10-26 to 1995-12-02 https://researchdata.ands.org.au/photosynthetic-rates-antarctic-ice-algae/700323 https://data.aad.gov.au/metadata/records/ASAC_854 http://nla.gov.au/nla.party-617536 unknown Australian Antarctic Data Centre https://researchdata.ands.org.au/photosynthetic-rates-antarctic-ice-algae/700323 b3981bd4-2dfb-4331-ab28-0dae7d521c33 ASAC_854 https://data.aad.gov.au/metadata/records/ASAC_854 http://nla.gov.au/nla.party-617536 Australian Antarctic Data Centre biota oceans PACK ICE EARTH SCIENCE CRYOSPHERE SEA ICE MICROALGAE BIOLOGICAL CLASSIFICATION PLANTS CHLOROPHYLL OCEAN CHEMISTRY PIGMENTS PHOTOSYNTHESIS BIOSPHERE ECOLOGICAL DYNAMICS ECOSYSTEM FUNCTIONS ANTARCTIC ANTARCTICA DAVIS FAST ICE OXYGEN MICROELECTRODES PHOTSYNTHESIS SEA ICE ALGAE OXYGEN ANALYZERS OXYGEN METERS CONTINENT > GEOGRAPHIC REGION > POLAR dataset ftands 2020-01-05T21:17:29Z 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 ENVELOPE(77.0,79.0,-68.5,-68.7) |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
biota oceans PACK ICE EARTH SCIENCE CRYOSPHERE SEA ICE MICROALGAE BIOLOGICAL CLASSIFICATION PLANTS CHLOROPHYLL OCEAN CHEMISTRY PIGMENTS PHOTOSYNTHESIS BIOSPHERE ECOLOGICAL DYNAMICS ECOSYSTEM FUNCTIONS ANTARCTIC ANTARCTICA DAVIS FAST ICE OXYGEN MICROELECTRODES PHOTSYNTHESIS SEA ICE ALGAE OXYGEN ANALYZERS OXYGEN METERS CONTINENT > GEOGRAPHIC REGION > POLAR |
spellingShingle |
biota oceans PACK ICE EARTH SCIENCE CRYOSPHERE SEA ICE MICROALGAE BIOLOGICAL CLASSIFICATION PLANTS CHLOROPHYLL OCEAN CHEMISTRY PIGMENTS PHOTOSYNTHESIS BIOSPHERE ECOLOGICAL DYNAMICS ECOSYSTEM FUNCTIONS ANTARCTIC ANTARCTICA DAVIS FAST ICE OXYGEN MICROELECTRODES PHOTSYNTHESIS SEA ICE ALGAE OXYGEN ANALYZERS OXYGEN METERS CONTINENT > GEOGRAPHIC REGION > POLAR Photosynthetic rates of Antarctic sea-ice algae |
topic_facet |
biota oceans PACK ICE EARTH SCIENCE CRYOSPHERE SEA ICE MICROALGAE BIOLOGICAL CLASSIFICATION PLANTS CHLOROPHYLL OCEAN CHEMISTRY PIGMENTS PHOTOSYNTHESIS BIOSPHERE ECOLOGICAL DYNAMICS ECOSYSTEM FUNCTIONS ANTARCTIC ANTARCTICA DAVIS FAST ICE OXYGEN MICROELECTRODES PHOTSYNTHESIS SEA ICE ALGAE OXYGEN ANALYZERS OXYGEN METERS CONTINENT > GEOGRAPHIC REGION > POLAR |
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. |
author2 |
MCMINN, ANDREW (hasPrincipalInvestigator) MCMINN, ANDREW (processor) Australian Antarctic Data Centre (publisher) |
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 Antarctic Data Centre |
url |
https://researchdata.ands.org.au/photosynthetic-rates-antarctic-ice-algae/700323 https://data.aad.gov.au/metadata/records/ASAC_854 http://nla.gov.au/nla.party-617536 |
op_coverage |
Spatial: northlimit=-68.5; southlimit=-68.7; westlimit=77.0; eastLimit=79.0; projection=WGS84 Temporal: From 1995-10-26 to 1995-12-02 |
long_lat |
ENVELOPE(77.0,79.0,-68.5,-68.7) |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica ice algae Sea ice |
genre_facet |
Antarc* Antarctic Antarctica ice algae Sea ice |
op_source |
Australian Antarctic Data Centre |
op_relation |
https://researchdata.ands.org.au/photosynthetic-rates-antarctic-ice-algae/700323 b3981bd4-2dfb-4331-ab28-0dae7d521c33 ASAC_854 https://data.aad.gov.au/metadata/records/ASAC_854 http://nla.gov.au/nla.party-617536 |
_version_ |
1766245912484511744 |