The Biochemistry, Ecology and Organic Geochemistry of Phaeocystis pouchetii communities of Davis Base, Antarctica
Progress Code: completed This metadata record covers ASAC projects 113, 191 and 625. (ASAC_113, ASAC_191, ASAC_625). The total lipid, fatty acid, sterol and pigment composition of water column particulates collected near the Australian Antarctic Base, Davis Station, were analysed over five summer se...
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ftands:oai:ands.org.au::2820063 2024-09-15T17:47:01+00:00 The Biochemistry, Ecology and Organic Geochemistry of Phaeocystis pouchetii communities of Davis Base, Antarctica AADC (owner) AADC, DATA OFFICER (distributor) AADC, DATA OFFICER (custodian) AU/AADC > Australian Antarctic Data Centre, Australia (hasAssociationWith) Australian Antarctic Data Centre (publisher) Australian Antarctic Division (sponsor) Nichols. P. and Skerratt, J.H. (originator) SKERRATT, JENNIFER HELEN (hasPrincipalInvestigator) SKERRATT, JENNIFER HELEN (author) Spatial: westlimit=77.87497; southlimit=-68.61744; eastlimit=78.06497; northlimit=-68.53744 Spatial: uplimit=10; downlimit=10 Temporal: From 1988-02-02 to 1989-02-14 https://researchdata.edu.au/the-biochemistry-ecology-base-antarctica/2820063 unknown Australian Ocean Data Network https://researchdata.edu.au/the-biochemistry-ecology-base-antarctica/2820063 ASAC_113 AU/AADC > Australian Antarctic Data Centre, Australia biota geoscientificInformation oceans EARTH SCIENCE > CRYOSPHERE > SEA ICE > SEA ICE AGE OCEANS > OCEAN CHEMISTRY > BIOGEOCHEMICAL CYCLES PIGMENTS BIOLOGICAL CLASSIFICATION > PROTISTS > DIATOMS BACTERIA/ARCHAEA PLANTS > MICROALGAE MICROALGAE > BIOSPHERE > ECOSYSTEMS > AQUATIC ECOSYSTEMS > PLANKTON > PHYTOPLANKTON PLANKTON MARINE ECOSYSTEMS > COASTAL dataset ftands 2024-08-06T01:58:58Z Progress Code: completed This metadata record covers ASAC projects 113, 191 and 625. (ASAC_113, ASAC_191, ASAC_625). The total lipid, fatty acid, sterol and pigment composition of water column particulates collected near the Australian Antarctic Base, Davis Station, were analysed over five summer seasons (1988-93) using capillary GC, GC-MS, TLC-FID and HPLC. Polar lipids were the dominant lipid class. Maximum lipid concentrations usually occurred in samples collected in December and January and corresponded with increased algal biomass. Both lipid profiles and microscopic observations showed significant variation in algal biomass and community structure in the water column during each season and on an interannual basis. During the period of diatom blooms (predominantly Nitzschia species) the dominant sterol and fatty acid were trans-22-dehydrocholesterol and 20:5w3, accompanied by a high 16:1w7 to 16:0 ratio. Very high polyunsaturated fatty acid and total lipid concentrations were associated with diatom blooms in the area. Bacterial markers increased late in all seasons after the summer algal blooms. Long chain C30 sterols also increased during the latter half of all seasons. Fjord samples collected in the area reflected greater biomass and diversity in algal and bacterial makers than coastal sites. Signature lipids for the alga Phaeocystis pouchetii, thought to be a major alga in Antarctic waters, were identified in field samples over the five summer seasons studied. Methods Study site Davis Base is situated on the Vestfold Hills, Antarctica and incorporates numerous lakes and fjords (Fig. 1). Samples of water column particulate matter were collected during five summer seasons (1988-93), 500 meters off-shore from Magnetic Island, situated 5 km NW of Davis. Three other sampling areas were situated in the fjords of the Vestfold hills and include two sites in Ellis Fjord, one midway along Ellis Fjord and one near Ellis Fjord mouth and one sample midway along Long Fjord (Fig. 1). These fjords are protected from ... Dataset Antarc* Antarctic Antarctica Sea ice Magnetic Island Research Data Australia (Australian National Data Service - ANDS) |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
biota geoscientificInformation oceans EARTH SCIENCE > CRYOSPHERE > SEA ICE > SEA ICE AGE OCEANS > OCEAN CHEMISTRY > BIOGEOCHEMICAL CYCLES PIGMENTS BIOLOGICAL CLASSIFICATION > PROTISTS > DIATOMS BACTERIA/ARCHAEA PLANTS > MICROALGAE MICROALGAE > BIOSPHERE > ECOSYSTEMS > AQUATIC ECOSYSTEMS > PLANKTON > PHYTOPLANKTON PLANKTON MARINE ECOSYSTEMS > COASTAL |
spellingShingle |
biota geoscientificInformation oceans EARTH SCIENCE > CRYOSPHERE > SEA ICE > SEA ICE AGE OCEANS > OCEAN CHEMISTRY > BIOGEOCHEMICAL CYCLES PIGMENTS BIOLOGICAL CLASSIFICATION > PROTISTS > DIATOMS BACTERIA/ARCHAEA PLANTS > MICROALGAE MICROALGAE > BIOSPHERE > ECOSYSTEMS > AQUATIC ECOSYSTEMS > PLANKTON > PHYTOPLANKTON PLANKTON MARINE ECOSYSTEMS > COASTAL The Biochemistry, Ecology and Organic Geochemistry of Phaeocystis pouchetii communities of Davis Base, Antarctica |
topic_facet |
biota geoscientificInformation oceans EARTH SCIENCE > CRYOSPHERE > SEA ICE > SEA ICE AGE OCEANS > OCEAN CHEMISTRY > BIOGEOCHEMICAL CYCLES PIGMENTS BIOLOGICAL CLASSIFICATION > PROTISTS > DIATOMS BACTERIA/ARCHAEA PLANTS > MICROALGAE MICROALGAE > BIOSPHERE > ECOSYSTEMS > AQUATIC ECOSYSTEMS > PLANKTON > PHYTOPLANKTON PLANKTON MARINE ECOSYSTEMS > COASTAL |
description |
Progress Code: completed This metadata record covers ASAC projects 113, 191 and 625. (ASAC_113, ASAC_191, ASAC_625). The total lipid, fatty acid, sterol and pigment composition of water column particulates collected near the Australian Antarctic Base, Davis Station, were analysed over five summer seasons (1988-93) using capillary GC, GC-MS, TLC-FID and HPLC. Polar lipids were the dominant lipid class. Maximum lipid concentrations usually occurred in samples collected in December and January and corresponded with increased algal biomass. Both lipid profiles and microscopic observations showed significant variation in algal biomass and community structure in the water column during each season and on an interannual basis. During the period of diatom blooms (predominantly Nitzschia species) the dominant sterol and fatty acid were trans-22-dehydrocholesterol and 20:5w3, accompanied by a high 16:1w7 to 16:0 ratio. Very high polyunsaturated fatty acid and total lipid concentrations were associated with diatom blooms in the area. Bacterial markers increased late in all seasons after the summer algal blooms. Long chain C30 sterols also increased during the latter half of all seasons. Fjord samples collected in the area reflected greater biomass and diversity in algal and bacterial makers than coastal sites. Signature lipids for the alga Phaeocystis pouchetii, thought to be a major alga in Antarctic waters, were identified in field samples over the five summer seasons studied. Methods Study site Davis Base is situated on the Vestfold Hills, Antarctica and incorporates numerous lakes and fjords (Fig. 1). Samples of water column particulate matter were collected during five summer seasons (1988-93), 500 meters off-shore from Magnetic Island, situated 5 km NW of Davis. Three other sampling areas were situated in the fjords of the Vestfold hills and include two sites in Ellis Fjord, one midway along Ellis Fjord and one near Ellis Fjord mouth and one sample midway along Long Fjord (Fig. 1). These fjords are protected from ... |
author2 |
AADC (owner) AADC, DATA OFFICER (distributor) AADC, DATA OFFICER (custodian) AU/AADC > Australian Antarctic Data Centre, Australia (hasAssociationWith) Australian Antarctic Data Centre (publisher) Australian Antarctic Division (sponsor) Nichols. P. and Skerratt, J.H. (originator) SKERRATT, JENNIFER HELEN (hasPrincipalInvestigator) SKERRATT, JENNIFER HELEN (author) |
format |
Dataset |
title |
The Biochemistry, Ecology and Organic Geochemistry of Phaeocystis pouchetii communities of Davis Base, Antarctica |
title_short |
The Biochemistry, Ecology and Organic Geochemistry of Phaeocystis pouchetii communities of Davis Base, Antarctica |
title_full |
The Biochemistry, Ecology and Organic Geochemistry of Phaeocystis pouchetii communities of Davis Base, Antarctica |
title_fullStr |
The Biochemistry, Ecology and Organic Geochemistry of Phaeocystis pouchetii communities of Davis Base, Antarctica |
title_full_unstemmed |
The Biochemistry, Ecology and Organic Geochemistry of Phaeocystis pouchetii communities of Davis Base, Antarctica |
title_sort |
biochemistry, ecology and organic geochemistry of phaeocystis pouchetii communities of davis base, antarctica |
publisher |
Australian Ocean Data Network |
url |
https://researchdata.edu.au/the-biochemistry-ecology-base-antarctica/2820063 |
op_coverage |
Spatial: westlimit=77.87497; southlimit=-68.61744; eastlimit=78.06497; northlimit=-68.53744 Spatial: uplimit=10; downlimit=10 Temporal: From 1988-02-02 to 1989-02-14 |
genre |
Antarc* Antarctic Antarctica Sea ice Magnetic Island |
genre_facet |
Antarc* Antarctic Antarctica Sea ice Magnetic Island |
op_source |
AU/AADC > Australian Antarctic Data Centre, Australia |
op_relation |
https://researchdata.edu.au/the-biochemistry-ecology-base-antarctica/2820063 ASAC_113 |
_version_ |
1810495496199864320 |