Phytoplankton and hydrological succession in Omega and Taynaya Bays, eastern Antarctica
Progress Code: completed Metadata record for data from ASAC Project 2146 See the link below for public details on this project. From the abstracts of the referenced papers: Early season phytoplankton communities in both Omega and Taynaya Bays are characterised by diatoms sedimenting out of the overl...
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ftands:oai:ands.org.au::2821002 2023-12-03T10:13:51+01:00 Phytoplankton and hydrological succession in Omega and Taynaya Bays, eastern Antarctica Spatial: westlimit=77; southlimit=-68.0; eastlimit=78; northlimit=-67.0 Temporal: From 1997-11-13 to 1998-03-02 https://researchdata.edu.au/phytoplankton-hydrological-succession-eastern-antarctica/2821002 unknown Australian Ocean Data Network https://researchdata.edu.au/phytoplankton-hydrological-succession-eastern-antarctica/2821002 ASAC_2146 Dataset DOI AU/AADC > Australian Antarctic Data Centre, Australia biota oceans EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NUTRIENTS PIGMENTS OCEAN TEMPERATURE > WATER TEMPERATURE SALINITY/DENSITY > SALINITY BIOSPHERE > ECOSYSTEMS > AQUATIC ECOSYSTEMS > PLANKTON > PHYTOPLANKTON PIGMENTS > CHLOROPHYLL ECOLOGICAL DYNAMICS > COMMUNITY DYNAMICS > PLANT SUCCESSION ABS ACETONE CHLOROPHYLL A DATE DIATOMS JULIAN DAY SAMPLE SUCCESSION TEMPERATURE SEDIMENT CORERS FIELD INVESTIGATION dataset ftands 2023-11-06T23:51:52Z Progress Code: completed Metadata record for data from ASAC Project 2146 See the link below for public details on this project. From the abstracts of the referenced papers: Early season phytoplankton communities in both Omega and Taynaya Bays are characterised by diatoms sedimenting out of the overlying sea ice. Initial nitrate, phosphate and silicate levels are high and the bay waters are covered with ice and well mixed. In Taynaya Bay the ice cover is retained throughout the season while Omega Bay is free for 6-8 weeks. After ice break out in Omega Bay, the phytoplankton community changes from one dominated by diatoms to one dominated by the phtyoflagellates, Pyramimonas spp., Cryptomonas sp. and Gymnodinium sp. In Taynaya Bay the ice remained and even though phtyoflagellates became more common, diatoms still dominated. These differences in community composition result from differences in light climate, extent of stratification and nutrient levels. Sediment cores from Abel and Platcha Bays, in the Vestfold Hills, east Antarctica, contain evidence for a local late Holocene increase in fast ice extent and a possible ice cap retreat at approximately 1750 yr BP, a similar time to the Chelnock Glaciation. Prior to this time both bays experienced periods of isolation that lead to changes in their diatom flora, C:N ratio, percentage of biogenic silica and total organic carbon. Three new diatom indices are proposed; the fast ice index, based on the proportion of benthic taxa and the snow index, based on the proportion of Berkelaya adeliense and Thalassiosira australis. These indices show strong relationships with the percentage of biogenic silica, total organic carbon and percentage sand. A weak relationship exists between the fast ice index and delta 13 C and no relationship with the C:N ratio. The fields in these datasets are: Date Julian Day Sample Volume filtered (L) Acetone Volume (ml) Abs Chlorophyll Phytoplankton Dataset Antarc* Antarctica East Antarctica Sea ice Research Data Australia (Australian National Data Service - ANDS) East Antarctica Vestfold Hills Vestfold Taynaya Bay ENVELOPE(78.292,78.292,-68.453,-68.453) Platcha ENVELOPE(78.512,78.512,-68.512,-68.512) Omega Bay ENVELOPE(-74.865,-74.865,71.451,71.451) |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
biota oceans EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NUTRIENTS PIGMENTS OCEAN TEMPERATURE > WATER TEMPERATURE SALINITY/DENSITY > SALINITY BIOSPHERE > ECOSYSTEMS > AQUATIC ECOSYSTEMS > PLANKTON > PHYTOPLANKTON PIGMENTS > CHLOROPHYLL ECOLOGICAL DYNAMICS > COMMUNITY DYNAMICS > PLANT SUCCESSION ABS ACETONE CHLOROPHYLL A DATE DIATOMS JULIAN DAY SAMPLE SUCCESSION TEMPERATURE SEDIMENT CORERS FIELD INVESTIGATION |
spellingShingle |
biota oceans EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NUTRIENTS PIGMENTS OCEAN TEMPERATURE > WATER TEMPERATURE SALINITY/DENSITY > SALINITY BIOSPHERE > ECOSYSTEMS > AQUATIC ECOSYSTEMS > PLANKTON > PHYTOPLANKTON PIGMENTS > CHLOROPHYLL ECOLOGICAL DYNAMICS > COMMUNITY DYNAMICS > PLANT SUCCESSION ABS ACETONE CHLOROPHYLL A DATE DIATOMS JULIAN DAY SAMPLE SUCCESSION TEMPERATURE SEDIMENT CORERS FIELD INVESTIGATION Phytoplankton and hydrological succession in Omega and Taynaya Bays, eastern Antarctica |
topic_facet |
biota oceans EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NUTRIENTS PIGMENTS OCEAN TEMPERATURE > WATER TEMPERATURE SALINITY/DENSITY > SALINITY BIOSPHERE > ECOSYSTEMS > AQUATIC ECOSYSTEMS > PLANKTON > PHYTOPLANKTON PIGMENTS > CHLOROPHYLL ECOLOGICAL DYNAMICS > COMMUNITY DYNAMICS > PLANT SUCCESSION ABS ACETONE CHLOROPHYLL A DATE DIATOMS JULIAN DAY SAMPLE SUCCESSION TEMPERATURE SEDIMENT CORERS FIELD INVESTIGATION |
description |
Progress Code: completed Metadata record for data from ASAC Project 2146 See the link below for public details on this project. From the abstracts of the referenced papers: Early season phytoplankton communities in both Omega and Taynaya Bays are characterised by diatoms sedimenting out of the overlying sea ice. Initial nitrate, phosphate and silicate levels are high and the bay waters are covered with ice and well mixed. In Taynaya Bay the ice cover is retained throughout the season while Omega Bay is free for 6-8 weeks. After ice break out in Omega Bay, the phytoplankton community changes from one dominated by diatoms to one dominated by the phtyoflagellates, Pyramimonas spp., Cryptomonas sp. and Gymnodinium sp. In Taynaya Bay the ice remained and even though phtyoflagellates became more common, diatoms still dominated. These differences in community composition result from differences in light climate, extent of stratification and nutrient levels. Sediment cores from Abel and Platcha Bays, in the Vestfold Hills, east Antarctica, contain evidence for a local late Holocene increase in fast ice extent and a possible ice cap retreat at approximately 1750 yr BP, a similar time to the Chelnock Glaciation. Prior to this time both bays experienced periods of isolation that lead to changes in their diatom flora, C:N ratio, percentage of biogenic silica and total organic carbon. Three new diatom indices are proposed; the fast ice index, based on the proportion of benthic taxa and the snow index, based on the proportion of Berkelaya adeliense and Thalassiosira australis. These indices show strong relationships with the percentage of biogenic silica, total organic carbon and percentage sand. A weak relationship exists between the fast ice index and delta 13 C and no relationship with the C:N ratio. The fields in these datasets are: Date Julian Day Sample Volume filtered (L) Acetone Volume (ml) Abs Chlorophyll Phytoplankton |
format |
Dataset |
title |
Phytoplankton and hydrological succession in Omega and Taynaya Bays, eastern Antarctica |
title_short |
Phytoplankton and hydrological succession in Omega and Taynaya Bays, eastern Antarctica |
title_full |
Phytoplankton and hydrological succession in Omega and Taynaya Bays, eastern Antarctica |
title_fullStr |
Phytoplankton and hydrological succession in Omega and Taynaya Bays, eastern Antarctica |
title_full_unstemmed |
Phytoplankton and hydrological succession in Omega and Taynaya Bays, eastern Antarctica |
title_sort |
phytoplankton and hydrological succession in omega and taynaya bays, eastern antarctica |
publisher |
Australian Ocean Data Network |
url |
https://researchdata.edu.au/phytoplankton-hydrological-succession-eastern-antarctica/2821002 |
op_coverage |
Spatial: westlimit=77; southlimit=-68.0; eastlimit=78; northlimit=-67.0 Temporal: From 1997-11-13 to 1998-03-02 |
long_lat |
ENVELOPE(78.292,78.292,-68.453,-68.453) ENVELOPE(78.512,78.512,-68.512,-68.512) ENVELOPE(-74.865,-74.865,71.451,71.451) |
geographic |
East Antarctica Vestfold Hills Vestfold Taynaya Bay Platcha Omega Bay |
geographic_facet |
East Antarctica Vestfold Hills Vestfold Taynaya Bay Platcha Omega Bay |
genre |
Antarc* Antarctica East Antarctica Sea ice |
genre_facet |
Antarc* Antarctica East Antarctica Sea ice |
op_source |
AU/AADC > Australian Antarctic Data Centre, Australia |
op_relation |
https://researchdata.edu.au/phytoplankton-hydrological-succession-eastern-antarctica/2821002 ASAC_2146 Dataset DOI |
_version_ |
1784260798996021248 |