Sea Ice Biota of Coastal Eastern Antarctica
The distribution and abundance of ice-associated copepods in the fast ice of the Australian Antarctic Territory were investigated over a distance of approximately 650 km between October and December 1995. The six sites where collections were made were: offshore from Mawson station, Larsemann Hills (...
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Format: | Dataset |
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Australian Antarctic Data Centre
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Online Access: | https://researchdata.ands.org.au/sea-ice-biota-eastern-antarctica/700333 https://doi.org/10.4225/15/584a08bc413e3 https://data.aad.gov.au/metadata/records/ASAC_875 http://nla.gov.au/nla.party-617536 |
id |
ftands:oai:ands.org.au::700333 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
biota oceans ICE TYPES EARTH SCIENCE SEA ICE CHLOROPHYLL OCEAN CHEMISTRY PIGMENTS BIOMASS DYNAMICS BIOSPHERE ECOLOGICAL DYNAMICS ECOSYSTEM FUNCTIONS CHLOROPHYLL A COPEPODS DRESCHERIELLA GLACIALIS FAST ICE PARALABIDOCERA ANTARCTICA STEPHOS LONGIPES SPECTROPHOTOMETERS FIELD INVESTIGATION FIELD SURVEYS CONTINENT > ANTARCTICA ANTARCTICA > Mawson Larsemann Hills Rauer Islands O'Gorman Rocks Bluff Island Murphy Rocks GEOGRAPHIC REGION > POLAR |
spellingShingle |
biota oceans ICE TYPES EARTH SCIENCE SEA ICE CHLOROPHYLL OCEAN CHEMISTRY PIGMENTS BIOMASS DYNAMICS BIOSPHERE ECOLOGICAL DYNAMICS ECOSYSTEM FUNCTIONS CHLOROPHYLL A COPEPODS DRESCHERIELLA GLACIALIS FAST ICE PARALABIDOCERA ANTARCTICA STEPHOS LONGIPES SPECTROPHOTOMETERS FIELD INVESTIGATION FIELD SURVEYS CONTINENT > ANTARCTICA ANTARCTICA > Mawson Larsemann Hills Rauer Islands O'Gorman Rocks Bluff Island Murphy Rocks GEOGRAPHIC REGION > POLAR Sea Ice Biota of Coastal Eastern Antarctica |
topic_facet |
biota oceans ICE TYPES EARTH SCIENCE SEA ICE CHLOROPHYLL OCEAN CHEMISTRY PIGMENTS BIOMASS DYNAMICS BIOSPHERE ECOLOGICAL DYNAMICS ECOSYSTEM FUNCTIONS CHLOROPHYLL A COPEPODS DRESCHERIELLA GLACIALIS FAST ICE PARALABIDOCERA ANTARCTICA STEPHOS LONGIPES SPECTROPHOTOMETERS FIELD INVESTIGATION FIELD SURVEYS CONTINENT > ANTARCTICA ANTARCTICA > Mawson Larsemann Hills Rauer Islands O'Gorman Rocks Bluff Island Murphy Rocks GEOGRAPHIC REGION > POLAR |
description |
The distribution and abundance of ice-associated copepods in the fast ice of the Australian Antarctic Territory were investigated over a distance of approximately 650 km between October and December 1995. The six sites where collections were made were: offshore from Mawson station, Larsemann Hills (including Nella Bay), Rauer Islands (ice edge near Filla Is), O'Gorman Rocks and Bluff Island near Davis Station, and Murphy Rocks in the northern Vestfold Hills. Ice cores were obtained using SIPRE ice augers. Five to ten cores were collected along transects several km in length. Thickness of sea ice and snow cover were measured at each sampling site. Chlorophyll a concentrations were determined for each core. Copepods were isolated from the melted core water and identified and counted. Zooplankton tows were also made at each site where cores were collected. Nine species of copepods were identified from the cores. However, of these, only three were recorded regularly: Paralabidocera antarctica, Drescheriella glacialis and Stephos longipes. The abundance of copepods ranged between 0 and 147/L. The highest densities were recorded at the Larsemann Hills and the lowest at Murphy Rocks. Within the cores, the highest abundances were found in the bottom 10 cm of ice, irrespective of the species. Chlorophyll a concentrations ranged between 0.9 and 373 mg/m3. Data available: excel files containing sampling dates, sampling sites and abundances (number per L) of three dominant sea ice copepods, Paralabidocera antarctica, Drescheriella glacialis, Stephos longipes. Data are presented for developmental stages (nauplii, copepodites and adults) where available. Totals are also provided. Vertical distribution in some cores is also provided. Chlorophyll a concentrations (ug/L) provided for most sites. Detailed information about each of the spreadsheets is provided below: The chlorophyll spreadsheet shows chlorophyll concentrations for 5 sites in the AAT. The column headings are: core - reference number of the core collected subsection - depth in the core in cm volume - vol of melted core water volume added - 1 L of filtered seawater for melting % original - amount of total that core water represents (i.e. minus the 1L added) aliquot - volume subsampled for chlorophyll analysis acetone - amount added (mL) for extraction 750, 664, 647, 630 - wavelengths where absorbance was measured chloro a - amount of chlorophyll a in the sample ug/L - chloro a expressed as a concentration The spatial spreadsheet shows species abundances of three copepods at 4 sites N1 to NVI - nauplius stage 1 to 6 of a species CI to CVI - copepodite stage 1 to 6 of a species F or M - female or male of copepodite stage 5 or 6 1,1 etc - cores 1 and 2 from site 1 within a major location (e.g. 2 cores close together in the Larsemann Hills) The temporal spreadsheet shows abundances over time at 2 sites (O'Gorman Rocks, Bluff Is) near Davis and two species (Paralabidocera antarctica and Drescheriella glacialis) on several sampling dates N1 to N3 - total nauplii in each of three cores (i.e. not separated into stages as above) C1 to C3 - total copepodites A1 to A3 - total adults Then at the bottom are the means of each three cores. |
author2 |
SWADLING, KERRIE (hasPrincipalInvestigator) SWADLING, KERRIE (processor) Australian Antarctic Data Centre (publisher) |
format |
Dataset |
title |
Sea Ice Biota of Coastal Eastern Antarctica |
title_short |
Sea Ice Biota of Coastal Eastern Antarctica |
title_full |
Sea Ice Biota of Coastal Eastern Antarctica |
title_fullStr |
Sea Ice Biota of Coastal Eastern Antarctica |
title_full_unstemmed |
Sea Ice Biota of Coastal Eastern Antarctica |
title_sort |
sea ice biota of coastal eastern antarctica |
publisher |
Australian Antarctic Data Centre |
url |
https://researchdata.ands.org.au/sea-ice-biota-eastern-antarctica/700333 https://doi.org/10.4225/15/584a08bc413e3 https://data.aad.gov.au/metadata/records/ASAC_875 http://nla.gov.au/nla.party-617536 |
op_coverage |
Spatial: northlimit=-67.6027; southlimit=-67.6027; westlimit=62.8738; eastLimit=62.8738; projection=WGS84 Spatial: northlimit=-68.2333; southlimit=-68.2333; westlimit=78.7333; eastLimit=78.7333; projection=WGS84 Spatial: northlimit=-68.5538; southlimit=-68.5538; westlimit=77.9082; eastLimit=77.9082; projection=WGS84 Spatial: northlimit=-68.571; southlimit=-68.571; westlimit=77.9502; eastLimit=77.9502; projection=WGS84 Spatial: northlimit=-68.85; southlimit=-68.85; westlimit=77.8333; eastLimit=77.8333; projection=WGS84 Spatial: northlimit=-69.4; southlimit=-69.4; westlimit=76.2167; eastLimit=76.2167; projection=WGS84 Temporal: From 1995-10-01 to 1995-12-31 |
long_lat |
ENVELOPE(77.908,77.908,-68.554,-68.554) ENVELOPE(77.968,77.968,-68.576,-68.576) ENVELOPE(77.968,77.968,-68.576,-68.576) ENVELOPE(76.217,76.217,-69.400,-69.400) ENVELOPE(62.874,62.874,-67.603,-67.603) ENVELOPE(78.733,78.733,-68.233,-68.233) ENVELOPE(77.950,77.950,-68.571,-68.571) ENVELOPE(77.833,77.833,-68.850,-68.850) ENVELOPE(62.8738,62.8738,-67.6027,-67.6027) ENVELOPE(78.7333,78.7333,-68.2333,-68.2333) ENVELOPE(77.9082,77.9082,-68.5538,-68.5538) ENVELOPE(77.9502,77.9502,-68.571,-68.571) ENVELOPE(77.8333,77.8333,-68.85,-68.85) ENVELOPE(76.2167,76.2167,-69.4,-69.4) |
geographic |
Antarctic Australian Antarctic Territory Bluff Island Davis Station Davis-Station Larsemann Hills Mawson Station Murphy Rocks O'Gorman Rocks Rauer Islands Vestfold Vestfold Hills |
geographic_facet |
Antarctic Australian Antarctic Territory Bluff Island Davis Station Davis-Station Larsemann Hills Mawson Station Murphy Rocks O'Gorman Rocks Rauer Islands Vestfold Vestfold Hills |
genre |
Antarc* Antarctic Antarctica Bluff Island Murphy Rocks Rauer Islands Sea ice Copepods |
genre_facet |
Antarc* Antarctic Antarctica Bluff Island Murphy Rocks Rauer Islands Sea ice Copepods |
op_source |
Australian Antarctic Data Centre |
op_relation |
https://researchdata.ands.org.au/sea-ice-biota-eastern-antarctica/700333 52e30542-59f6-40e3-9a2e-b6696408f02d doi:10.4225/15/584a08bc413e3 ASAC_875 https://data.aad.gov.au/metadata/records/ASAC_875 http://nla.gov.au/nla.party-617536 |
op_doi |
https://doi.org/10.4225/15/584a08bc413e3 |
_version_ |
1766245913651576832 |
spelling |
ftands:oai:ands.org.au::700333 2023-05-15T13:46:58+02:00 Sea Ice Biota of Coastal Eastern Antarctica SWADLING, KERRIE (hasPrincipalInvestigator) SWADLING, KERRIE (processor) Australian Antarctic Data Centre (publisher) Spatial: northlimit=-67.6027; southlimit=-67.6027; westlimit=62.8738; eastLimit=62.8738; projection=WGS84 Spatial: northlimit=-68.2333; southlimit=-68.2333; westlimit=78.7333; eastLimit=78.7333; projection=WGS84 Spatial: northlimit=-68.5538; southlimit=-68.5538; westlimit=77.9082; eastLimit=77.9082; projection=WGS84 Spatial: northlimit=-68.571; southlimit=-68.571; westlimit=77.9502; eastLimit=77.9502; projection=WGS84 Spatial: northlimit=-68.85; southlimit=-68.85; westlimit=77.8333; eastLimit=77.8333; projection=WGS84 Spatial: northlimit=-69.4; southlimit=-69.4; westlimit=76.2167; eastLimit=76.2167; projection=WGS84 Temporal: From 1995-10-01 to 1995-12-31 https://researchdata.ands.org.au/sea-ice-biota-eastern-antarctica/700333 https://doi.org/10.4225/15/584a08bc413e3 https://data.aad.gov.au/metadata/records/ASAC_875 http://nla.gov.au/nla.party-617536 unknown Australian Antarctic Data Centre https://researchdata.ands.org.au/sea-ice-biota-eastern-antarctica/700333 52e30542-59f6-40e3-9a2e-b6696408f02d doi:10.4225/15/584a08bc413e3 ASAC_875 https://data.aad.gov.au/metadata/records/ASAC_875 http://nla.gov.au/nla.party-617536 Australian Antarctic Data Centre biota oceans ICE TYPES EARTH SCIENCE SEA ICE CHLOROPHYLL OCEAN CHEMISTRY PIGMENTS BIOMASS DYNAMICS BIOSPHERE ECOLOGICAL DYNAMICS ECOSYSTEM FUNCTIONS CHLOROPHYLL A COPEPODS DRESCHERIELLA GLACIALIS FAST ICE PARALABIDOCERA ANTARCTICA STEPHOS LONGIPES SPECTROPHOTOMETERS FIELD INVESTIGATION FIELD SURVEYS CONTINENT > ANTARCTICA ANTARCTICA > Mawson Larsemann Hills Rauer Islands O'Gorman Rocks Bluff Island Murphy Rocks GEOGRAPHIC REGION > POLAR dataset ftands https://doi.org/10.4225/15/584a08bc413e3 2020-01-05T21:17:29Z The distribution and abundance of ice-associated copepods in the fast ice of the Australian Antarctic Territory were investigated over a distance of approximately 650 km between October and December 1995. The six sites where collections were made were: offshore from Mawson station, Larsemann Hills (including Nella Bay), Rauer Islands (ice edge near Filla Is), O'Gorman Rocks and Bluff Island near Davis Station, and Murphy Rocks in the northern Vestfold Hills. Ice cores were obtained using SIPRE ice augers. Five to ten cores were collected along transects several km in length. Thickness of sea ice and snow cover were measured at each sampling site. Chlorophyll a concentrations were determined for each core. Copepods were isolated from the melted core water and identified and counted. Zooplankton tows were also made at each site where cores were collected. Nine species of copepods were identified from the cores. However, of these, only three were recorded regularly: Paralabidocera antarctica, Drescheriella glacialis and Stephos longipes. The abundance of copepods ranged between 0 and 147/L. The highest densities were recorded at the Larsemann Hills and the lowest at Murphy Rocks. Within the cores, the highest abundances were found in the bottom 10 cm of ice, irrespective of the species. Chlorophyll a concentrations ranged between 0.9 and 373 mg/m3. Data available: excel files containing sampling dates, sampling sites and abundances (number per L) of three dominant sea ice copepods, Paralabidocera antarctica, Drescheriella glacialis, Stephos longipes. Data are presented for developmental stages (nauplii, copepodites and adults) where available. Totals are also provided. Vertical distribution in some cores is also provided. Chlorophyll a concentrations (ug/L) provided for most sites. Detailed information about each of the spreadsheets is provided below: The chlorophyll spreadsheet shows chlorophyll concentrations for 5 sites in the AAT. The column headings are: core - reference number of the core collected subsection - depth in the core in cm volume - vol of melted core water volume added - 1 L of filtered seawater for melting % original - amount of total that core water represents (i.e. minus the 1L added) aliquot - volume subsampled for chlorophyll analysis acetone - amount added (mL) for extraction 750, 664, 647, 630 - wavelengths where absorbance was measured chloro a - amount of chlorophyll a in the sample ug/L - chloro a expressed as a concentration The spatial spreadsheet shows species abundances of three copepods at 4 sites N1 to NVI - nauplius stage 1 to 6 of a species CI to CVI - copepodite stage 1 to 6 of a species F or M - female or male of copepodite stage 5 or 6 1,1 etc - cores 1 and 2 from site 1 within a major location (e.g. 2 cores close together in the Larsemann Hills) The temporal spreadsheet shows abundances over time at 2 sites (O'Gorman Rocks, Bluff Is) near Davis and two species (Paralabidocera antarctica and Drescheriella glacialis) on several sampling dates N1 to N3 - total nauplii in each of three cores (i.e. not separated into stages as above) C1 to C3 - total copepodites A1 to A3 - total adults Then at the bottom are the means of each three cores. Dataset Antarc* Antarctic Antarctica Bluff Island Murphy Rocks Rauer Islands Sea ice Copepods Research Data Australia (Australian National Data Service - ANDS) Antarctic Australian Antarctic Territory Bluff Island ENVELOPE(77.908,77.908,-68.554,-68.554) Davis Station ENVELOPE(77.968,77.968,-68.576,-68.576) Davis-Station ENVELOPE(77.968,77.968,-68.576,-68.576) Larsemann Hills ENVELOPE(76.217,76.217,-69.400,-69.400) Mawson Station ENVELOPE(62.874,62.874,-67.603,-67.603) Murphy Rocks ENVELOPE(78.733,78.733,-68.233,-68.233) O'Gorman Rocks ENVELOPE(77.950,77.950,-68.571,-68.571) Rauer Islands ENVELOPE(77.833,77.833,-68.850,-68.850) Vestfold Vestfold Hills ENVELOPE(62.8738,62.8738,-67.6027,-67.6027) ENVELOPE(78.7333,78.7333,-68.2333,-68.2333) ENVELOPE(77.9082,77.9082,-68.5538,-68.5538) ENVELOPE(77.9502,77.9502,-68.571,-68.571) ENVELOPE(77.8333,77.8333,-68.85,-68.85) ENVELOPE(76.2167,76.2167,-69.4,-69.4) |