Palaeoclimate Analysis of Sediment Cores from the Fjords and Lakes of the Vestfold Hills
From the abstracts of some of the referenced papers: The relationship between surface sediment diatom assemblages and measured limnological variables in 33 coastal Antarctic lakes was examined by constructing a diatom-water chemistry dataset. Canonical correspondence analysis revealed that salinity...
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Format: | Dataset |
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Australian Antarctic Data Centre
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Online Access: | https://researchdata.edu.au/palaeoclimate-analysis-sediment-vestfold-hills/700306 https://doi.org/10.4225/15/58464d7d6d3f6 https://data.aad.gov.au/metadata/records/ASAC_784 http://nla.gov.au/nla.party-617536 |
id |
ftands:oai:ands.org.au::700306 |
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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 |
climatologyMeteorologyAtmosphere geoscientificInformation oceans EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SURFACE WATER > SURFACE WATER FEATURES > LAKES/RESERVOIRS BIOSPHERE > ECOSYSTEMS > FRESHWATER ECOSYSTEMS > LAKE/POND SALINE LAKES EARTH SCIENCE BIOSPHERE AQUATIC ECOSYSTEMS LAKES BIOMASS DYNAMICS ECOLOGICAL DYNAMICS ECOSYSTEM FUNCTIONS DIATOMS BIOLOGICAL CLASSIFICATION PLANTS MICROALGAE SEDIMENTS PALEOCLIMATE OCEAN/LAKE RECORDS WATER QUALITY/WATER CHEMISTRY TERRESTRIAL HYDROSPHERE WATER QUALITY/WATER CHEMISTRY > SOLIDS > TOTAL DISSOLVED SOLIDS DISSOLVED GASES ALKALINITY ABUNDANCE ACE LAKE ANTARCTIC CALCIUM ANTARCTICA CALCIUM CARBONATE CHLORINE ELEVATION HYPERSALINE FRESH HOLOMICTIC MAGNESIUM MEROMICTIC HYPOSALINE LATITUDE POTASSIUM SILICA SULPHUR LONGITUDE MARINE NITRATE PHOSPHATE SALINITY SPECIES SODIUM VESTFOLD HILLS SEDIMENT CORERS FIELD SURVEYS CONTINENT > ANTARCTICA > GEOGRAPHIC REGION > POLAR |
spellingShingle |
climatologyMeteorologyAtmosphere geoscientificInformation oceans EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SURFACE WATER > SURFACE WATER FEATURES > LAKES/RESERVOIRS BIOSPHERE > ECOSYSTEMS > FRESHWATER ECOSYSTEMS > LAKE/POND SALINE LAKES EARTH SCIENCE BIOSPHERE AQUATIC ECOSYSTEMS LAKES BIOMASS DYNAMICS ECOLOGICAL DYNAMICS ECOSYSTEM FUNCTIONS DIATOMS BIOLOGICAL CLASSIFICATION PLANTS MICROALGAE SEDIMENTS PALEOCLIMATE OCEAN/LAKE RECORDS WATER QUALITY/WATER CHEMISTRY TERRESTRIAL HYDROSPHERE WATER QUALITY/WATER CHEMISTRY > SOLIDS > TOTAL DISSOLVED SOLIDS DISSOLVED GASES ALKALINITY ABUNDANCE ACE LAKE ANTARCTIC CALCIUM ANTARCTICA CALCIUM CARBONATE CHLORINE ELEVATION HYPERSALINE FRESH HOLOMICTIC MAGNESIUM MEROMICTIC HYPOSALINE LATITUDE POTASSIUM SILICA SULPHUR LONGITUDE MARINE NITRATE PHOSPHATE SALINITY SPECIES SODIUM VESTFOLD HILLS SEDIMENT CORERS FIELD SURVEYS CONTINENT > ANTARCTICA > GEOGRAPHIC REGION > POLAR Palaeoclimate Analysis of Sediment Cores from the Fjords and Lakes of the Vestfold Hills |
topic_facet |
climatologyMeteorologyAtmosphere geoscientificInformation oceans EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SURFACE WATER > SURFACE WATER FEATURES > LAKES/RESERVOIRS BIOSPHERE > ECOSYSTEMS > FRESHWATER ECOSYSTEMS > LAKE/POND SALINE LAKES EARTH SCIENCE BIOSPHERE AQUATIC ECOSYSTEMS LAKES BIOMASS DYNAMICS ECOLOGICAL DYNAMICS ECOSYSTEM FUNCTIONS DIATOMS BIOLOGICAL CLASSIFICATION PLANTS MICROALGAE SEDIMENTS PALEOCLIMATE OCEAN/LAKE RECORDS WATER QUALITY/WATER CHEMISTRY TERRESTRIAL HYDROSPHERE WATER QUALITY/WATER CHEMISTRY > SOLIDS > TOTAL DISSOLVED SOLIDS DISSOLVED GASES ALKALINITY ABUNDANCE ACE LAKE ANTARCTIC CALCIUM ANTARCTICA CALCIUM CARBONATE CHLORINE ELEVATION HYPERSALINE FRESH HOLOMICTIC MAGNESIUM MEROMICTIC HYPOSALINE LATITUDE POTASSIUM SILICA SULPHUR LONGITUDE MARINE NITRATE PHOSPHATE SALINITY SPECIES SODIUM VESTFOLD HILLS SEDIMENT CORERS FIELD SURVEYS CONTINENT > ANTARCTICA > GEOGRAPHIC REGION > POLAR |
description |
From the abstracts of some of the referenced papers: The relationship between surface sediment diatom assemblages and measured limnological variables in 33 coastal Antarctic lakes was examined by constructing a diatom-water chemistry dataset. Canonical correspondence analysis revealed that salinity and silicate each explain significant amounts of variation in the distribution and abundance of the surface sediment diatom taxa. Salinity has the strongest influence, revealing its value for limnological inference models in this coastal Antarctic region. A comprehensive diatom stratigraphy is used to calculate a palaeosalinity history for an Antarctic lake via an established diatom-salinity transfer function for the Vestfold Hills, Antarctica. A sediment core taken from Ace Lake in 1995 shows three distinct changes in diatom assemblage constituents: initial benthic hyposaline - freshwater taxa are replaced by marine planktonic and sea-ice taxa with these taxa in turn replaced by the benthic hypersaline taxa dominant in the lake today. These changes in assemblage composition enable the lakewater salininty of each stage to be determined, and the Holocene evolution of the lake to be refined. Deglaciation of the Vestfold Hills at the beginning of the Holocene exposed Ace Lake basin; following this, fresh lacustrine diatoms were deposited from ~11 380 to ~8110 corrected 14C yrBP. Relative sea-level rise after this time led to the progressive marine inundation of the lake and the deposition of marine diatom taxa. Marine taxa were dominant in the sediment for more than 6000 years. Isostatic rebound and stabilisation of the sea-level isolated Ace Lake and at ~1480 corrected 14C yrBP saline lacustrine diatoms became the dominant taxa, indicative of the concentration of dissolved salts through evaporation after isolation. |
author2 |
MCMINN, ANDREW (hasPrincipalInvestigator) MCMINN, ANDREW (processor) ROBERTS, DONNA (hasPrincipalInvestigator) ROBERTS, DONNA (processor) Australian Antarctic Data Centre (publisher) |
format |
Dataset |
title |
Palaeoclimate Analysis of Sediment Cores from the Fjords and Lakes of the Vestfold Hills |
title_short |
Palaeoclimate Analysis of Sediment Cores from the Fjords and Lakes of the Vestfold Hills |
title_full |
Palaeoclimate Analysis of Sediment Cores from the Fjords and Lakes of the Vestfold Hills |
title_fullStr |
Palaeoclimate Analysis of Sediment Cores from the Fjords and Lakes of the Vestfold Hills |
title_full_unstemmed |
Palaeoclimate Analysis of Sediment Cores from the Fjords and Lakes of the Vestfold Hills |
title_sort |
palaeoclimate analysis of sediment cores from the fjords and lakes of the vestfold hills |
publisher |
Australian Antarctic Data Centre |
url |
https://researchdata.edu.au/palaeoclimate-analysis-sediment-vestfold-hills/700306 https://doi.org/10.4225/15/58464d7d6d3f6 https://data.aad.gov.au/metadata/records/ASAC_784 http://nla.gov.au/nla.party-617536 |
op_coverage |
Spatial: northlimit=-68.37895; southlimit=-68.76214; westlimit=77.86548; eastLimit=78.8269; projection=WGS84 Temporal: From 1995-10-01 to 1996-03-31 |
long_lat |
ENVELOPE(78.188,78.188,-68.472,-68.472) ENVELOPE(77.86548,78.8269,-68.37895,-68.76214) |
geographic |
Ace Lake Antarctic Vestfold Vestfold Hills |
geographic_facet |
Ace Lake Antarctic Vestfold Vestfold Hills |
genre |
Antarc* Antarctic Antarctica Sea ice |
genre_facet |
Antarc* Antarctic Antarctica Sea ice |
op_source |
Australian Antarctic Data Centre |
op_relation |
https://researchdata.edu.au/palaeoclimate-analysis-sediment-vestfold-hills/700306 9ab4ed6f-a96a-4e92-b156-57dd3178a749 doi:10.4225/15/58464d7d6d3f6 ASAC_784 https://data.aad.gov.au/metadata/records/ASAC_784 http://nla.gov.au/nla.party-617536 |
op_doi |
https://doi.org/10.4225/15/58464d7d6d3f6 |
_version_ |
1766146899049447424 |
spelling |
ftands:oai:ands.org.au::700306 2023-05-15T13:41:12+02:00 Palaeoclimate Analysis of Sediment Cores from the Fjords and Lakes of the Vestfold Hills MCMINN, ANDREW (hasPrincipalInvestigator) MCMINN, ANDREW (processor) ROBERTS, DONNA (hasPrincipalInvestigator) ROBERTS, DONNA (processor) Australian Antarctic Data Centre (publisher) Spatial: northlimit=-68.37895; southlimit=-68.76214; westlimit=77.86548; eastLimit=78.8269; projection=WGS84 Temporal: From 1995-10-01 to 1996-03-31 https://researchdata.edu.au/palaeoclimate-analysis-sediment-vestfold-hills/700306 https://doi.org/10.4225/15/58464d7d6d3f6 https://data.aad.gov.au/metadata/records/ASAC_784 http://nla.gov.au/nla.party-617536 unknown Australian Antarctic Data Centre https://researchdata.edu.au/palaeoclimate-analysis-sediment-vestfold-hills/700306 9ab4ed6f-a96a-4e92-b156-57dd3178a749 doi:10.4225/15/58464d7d6d3f6 ASAC_784 https://data.aad.gov.au/metadata/records/ASAC_784 http://nla.gov.au/nla.party-617536 Australian Antarctic Data Centre climatologyMeteorologyAtmosphere geoscientificInformation oceans EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SURFACE WATER > SURFACE WATER FEATURES > LAKES/RESERVOIRS BIOSPHERE > ECOSYSTEMS > FRESHWATER ECOSYSTEMS > LAKE/POND SALINE LAKES EARTH SCIENCE BIOSPHERE AQUATIC ECOSYSTEMS LAKES BIOMASS DYNAMICS ECOLOGICAL DYNAMICS ECOSYSTEM FUNCTIONS DIATOMS BIOLOGICAL CLASSIFICATION PLANTS MICROALGAE SEDIMENTS PALEOCLIMATE OCEAN/LAKE RECORDS WATER QUALITY/WATER CHEMISTRY TERRESTRIAL HYDROSPHERE WATER QUALITY/WATER CHEMISTRY > SOLIDS > TOTAL DISSOLVED SOLIDS DISSOLVED GASES ALKALINITY ABUNDANCE ACE LAKE ANTARCTIC CALCIUM ANTARCTICA CALCIUM CARBONATE CHLORINE ELEVATION HYPERSALINE FRESH HOLOMICTIC MAGNESIUM MEROMICTIC HYPOSALINE LATITUDE POTASSIUM SILICA SULPHUR LONGITUDE MARINE NITRATE PHOSPHATE SALINITY SPECIES SODIUM VESTFOLD HILLS SEDIMENT CORERS FIELD SURVEYS CONTINENT > ANTARCTICA > GEOGRAPHIC REGION > POLAR dataset ftands https://doi.org/10.4225/15/58464d7d6d3f6 2021-12-06T23:22:46Z From the abstracts of some of the referenced papers: The relationship between surface sediment diatom assemblages and measured limnological variables in 33 coastal Antarctic lakes was examined by constructing a diatom-water chemistry dataset. Canonical correspondence analysis revealed that salinity and silicate each explain significant amounts of variation in the distribution and abundance of the surface sediment diatom taxa. Salinity has the strongest influence, revealing its value for limnological inference models in this coastal Antarctic region. A comprehensive diatom stratigraphy is used to calculate a palaeosalinity history for an Antarctic lake via an established diatom-salinity transfer function for the Vestfold Hills, Antarctica. A sediment core taken from Ace Lake in 1995 shows three distinct changes in diatom assemblage constituents: initial benthic hyposaline - freshwater taxa are replaced by marine planktonic and sea-ice taxa with these taxa in turn replaced by the benthic hypersaline taxa dominant in the lake today. These changes in assemblage composition enable the lakewater salininty of each stage to be determined, and the Holocene evolution of the lake to be refined. Deglaciation of the Vestfold Hills at the beginning of the Holocene exposed Ace Lake basin; following this, fresh lacustrine diatoms were deposited from ~11 380 to ~8110 corrected 14C yrBP. Relative sea-level rise after this time led to the progressive marine inundation of the lake and the deposition of marine diatom taxa. Marine taxa were dominant in the sediment for more than 6000 years. Isostatic rebound and stabilisation of the sea-level isolated Ace Lake and at ~1480 corrected 14C yrBP saline lacustrine diatoms became the dominant taxa, indicative of the concentration of dissolved salts through evaporation after isolation. Dataset Antarc* Antarctic Antarctica Sea ice Research Data Australia (Australian National Data Service - ANDS) Ace Lake ENVELOPE(78.188,78.188,-68.472,-68.472) Antarctic Vestfold Vestfold Hills ENVELOPE(77.86548,78.8269,-68.37895,-68.76214) |