Palaeolimnological investigations of coastal continental lakes in the Larsemann Hills
Progress Code: completed Statement: The dates provided in temporal coverage are approximate only, and represent the dates of field data collection rather than laboratory analysis. 1.The lakes and ponds in the Larsemann Hills and Bolingen Islands (East-Antarctica) are characterised by cyanobacteria-d...
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Australian Ocean Data Network
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Online Access: | https://researchdata.edu.au/palaeolimnological-investigations-coastal-larsemann-hills/2816802 |
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ftands:oai:ands.org.au::2816802 2023-10-09T21:47:01+02:00 Palaeolimnological investigations of coastal continental lakes in the Larsemann Hills Spatial: westlimit=75.75; southlimit=-69.5166; eastlimit=76.4; northlimit=-69.15 Spatial: uplimit=100; downlimit=5 Spatial: uplimit=34; downlimit=0.5 Temporal: From 1997-10-29 to 1998-02-04 https://researchdata.edu.au/palaeolimnological-investigations-coastal-larsemann-hills/2816802 unknown Australian Ocean Data Network https://researchdata.edu.au/palaeolimnological-investigations-coastal-larsemann-hills/2816802 ASAC_2112 AU/AADC > Australian Antarctic Data Centre, Australia biota inlandWaters oceans EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SURFACE WATER > SURFACE WATER FEATURES > LAKES/RESERVOIRS WATER QUALITY/WATER CHEMISTRY > WATER CHARACTERISTICS > CONDUCTIVITY pH BIOLOGICAL CLASSIFICATION > PROTISTS > DIATOMS BACTERIA/ARCHAEA PLANTS > MICROALGAE > BIOSPHERE > ECOLOGICAL DYNAMICS > SPECIES/POPULATION INTERACTIONS > BIOLUMINESCENCE ABSENCE ALKALINITY ALTITUDE AMMONIUM ANTARCTICA AREA BICARBONATE BOLINGEN ISLANDS CALCIUM CATCHMENT CHLORINE CYANOBACTERIA DEPTH DIATOM dataset ftands 2023-09-18T22:42:40Z Progress Code: completed Statement: The dates provided in temporal coverage are approximate only, and represent the dates of field data collection rather than laboratory analysis. 1.The lakes and ponds in the Larsemann Hills and Bolingen Islands (East-Antarctica) are characterised by cyanobacteria-dominated, benthic microbial mat communities. A 56-lake dataset representing the limnological diversity among the more than 150 lakes and ponds in the region was developed to identify the nature and quantify the effects of the abiotic conditions structuring the cyanobacterial and diatom communities. 2.Limnological diversity in the lakes of the Larsemann Hills and Bolingen Islands is primarily determined by salinity and salinity related variables (concentrations of major ions, conductivity and alkalinity), and variation in lake morphometry (depth, catchment and lake area). Low pigment, phosphate and nitrogen concentrations, and DOC and TOC levels in the water column of most lakes underscore the ecological success of benthic microbial mats in this region. 3.Benthic communities consisted of prostrate, sometimes finely laminated mats, flake mats, epilithic and interstitial microbial mats. Mat physiognomy and chlorophyll/carotenoid ratios were strongly related to lake depth, but not to salinity. 4.Morphological-taxonomic analyses revealed the presence of 27 diatom morphospecies and 34 cyanobacterial morphotypes. Mats of shallow lakes (interstitial and flake mats) and those of deeper lakes (prostrate mats) were characterized by different dominant cyanobacterial morphotypes. No relationship was found between the distribution of these morphotypes and salinity. In contrast, variation in diatom species composition was strongly related to both lake depth and salinity. Shallow ponds are mainly characterised by aerial diatoms (e.g. Diadesmis cf. perpusilla and Hantzschia spp.). In deep lakes, communities are dominated by Psammothidium abundans and Stauroforma inermis. Lakes with conductivities higher than 1.5 mS/cm become ... Dataset Antarc* Antarctica East Antarctica Research Data Australia (Australian National Data Service - ANDS) East Antarctica Larsemann Hills ENVELOPE(76.217,76.217,-69.400,-69.400) Bolingen Islands ENVELOPE(75.696,75.696,-69.532,-69.532) |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
biota inlandWaters oceans EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SURFACE WATER > SURFACE WATER FEATURES > LAKES/RESERVOIRS WATER QUALITY/WATER CHEMISTRY > WATER CHARACTERISTICS > CONDUCTIVITY pH BIOLOGICAL CLASSIFICATION > PROTISTS > DIATOMS BACTERIA/ARCHAEA PLANTS > MICROALGAE > BIOSPHERE > ECOLOGICAL DYNAMICS > SPECIES/POPULATION INTERACTIONS > BIOLUMINESCENCE ABSENCE ALKALINITY ALTITUDE AMMONIUM ANTARCTICA AREA BICARBONATE BOLINGEN ISLANDS CALCIUM CATCHMENT CHLORINE CYANOBACTERIA DEPTH DIATOM |
spellingShingle |
biota inlandWaters oceans EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SURFACE WATER > SURFACE WATER FEATURES > LAKES/RESERVOIRS WATER QUALITY/WATER CHEMISTRY > WATER CHARACTERISTICS > CONDUCTIVITY pH BIOLOGICAL CLASSIFICATION > PROTISTS > DIATOMS BACTERIA/ARCHAEA PLANTS > MICROALGAE > BIOSPHERE > ECOLOGICAL DYNAMICS > SPECIES/POPULATION INTERACTIONS > BIOLUMINESCENCE ABSENCE ALKALINITY ALTITUDE AMMONIUM ANTARCTICA AREA BICARBONATE BOLINGEN ISLANDS CALCIUM CATCHMENT CHLORINE CYANOBACTERIA DEPTH DIATOM Palaeolimnological investigations of coastal continental lakes in the Larsemann Hills |
topic_facet |
biota inlandWaters oceans EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SURFACE WATER > SURFACE WATER FEATURES > LAKES/RESERVOIRS WATER QUALITY/WATER CHEMISTRY > WATER CHARACTERISTICS > CONDUCTIVITY pH BIOLOGICAL CLASSIFICATION > PROTISTS > DIATOMS BACTERIA/ARCHAEA PLANTS > MICROALGAE > BIOSPHERE > ECOLOGICAL DYNAMICS > SPECIES/POPULATION INTERACTIONS > BIOLUMINESCENCE ABSENCE ALKALINITY ALTITUDE AMMONIUM ANTARCTICA AREA BICARBONATE BOLINGEN ISLANDS CALCIUM CATCHMENT CHLORINE CYANOBACTERIA DEPTH DIATOM |
description |
Progress Code: completed Statement: The dates provided in temporal coverage are approximate only, and represent the dates of field data collection rather than laboratory analysis. 1.The lakes and ponds in the Larsemann Hills and Bolingen Islands (East-Antarctica) are characterised by cyanobacteria-dominated, benthic microbial mat communities. A 56-lake dataset representing the limnological diversity among the more than 150 lakes and ponds in the region was developed to identify the nature and quantify the effects of the abiotic conditions structuring the cyanobacterial and diatom communities. 2.Limnological diversity in the lakes of the Larsemann Hills and Bolingen Islands is primarily determined by salinity and salinity related variables (concentrations of major ions, conductivity and alkalinity), and variation in lake morphometry (depth, catchment and lake area). Low pigment, phosphate and nitrogen concentrations, and DOC and TOC levels in the water column of most lakes underscore the ecological success of benthic microbial mats in this region. 3.Benthic communities consisted of prostrate, sometimes finely laminated mats, flake mats, epilithic and interstitial microbial mats. Mat physiognomy and chlorophyll/carotenoid ratios were strongly related to lake depth, but not to salinity. 4.Morphological-taxonomic analyses revealed the presence of 27 diatom morphospecies and 34 cyanobacterial morphotypes. Mats of shallow lakes (interstitial and flake mats) and those of deeper lakes (prostrate mats) were characterized by different dominant cyanobacterial morphotypes. No relationship was found between the distribution of these morphotypes and salinity. In contrast, variation in diatom species composition was strongly related to both lake depth and salinity. Shallow ponds are mainly characterised by aerial diatoms (e.g. Diadesmis cf. perpusilla and Hantzschia spp.). In deep lakes, communities are dominated by Psammothidium abundans and Stauroforma inermis. Lakes with conductivities higher than 1.5 mS/cm become ... |
format |
Dataset |
title |
Palaeolimnological investigations of coastal continental lakes in the Larsemann Hills |
title_short |
Palaeolimnological investigations of coastal continental lakes in the Larsemann Hills |
title_full |
Palaeolimnological investigations of coastal continental lakes in the Larsemann Hills |
title_fullStr |
Palaeolimnological investigations of coastal continental lakes in the Larsemann Hills |
title_full_unstemmed |
Palaeolimnological investigations of coastal continental lakes in the Larsemann Hills |
title_sort |
palaeolimnological investigations of coastal continental lakes in the larsemann hills |
publisher |
Australian Ocean Data Network |
url |
https://researchdata.edu.au/palaeolimnological-investigations-coastal-larsemann-hills/2816802 |
op_coverage |
Spatial: westlimit=75.75; southlimit=-69.5166; eastlimit=76.4; northlimit=-69.15 Spatial: uplimit=100; downlimit=5 Spatial: uplimit=34; downlimit=0.5 Temporal: From 1997-10-29 to 1998-02-04 |
long_lat |
ENVELOPE(76.217,76.217,-69.400,-69.400) ENVELOPE(75.696,75.696,-69.532,-69.532) |
geographic |
East Antarctica Larsemann Hills Bolingen Islands |
geographic_facet |
East Antarctica Larsemann Hills Bolingen Islands |
genre |
Antarc* Antarctica East Antarctica |
genre_facet |
Antarc* Antarctica East Antarctica |
op_source |
AU/AADC > Australian Antarctic Data Centre, Australia |
op_relation |
https://researchdata.edu.au/palaeolimnological-investigations-coastal-larsemann-hills/2816802 ASAC_2112 |
_version_ |
1779309686819913728 |