Comparative study of processes controlling carbon export in Southern Ocean environments characterised by a different hydrodynamical and ecological functioning
Progress Code: completed Preliminary Metadata record for data expected from ASAC Project 1343 See the link below for public details on this project. Comparative study of the processes controlling carbon export in Southern Ocean environments characterised by a different hydrodynamical and ecological...
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Australian Ocean Data Network
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Online Access: | https://researchdata.edu.au/comparative-study-processes-ecological-functioning/2822325 |
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ftands:oai:ands.org.au::2822325 2023-12-03T10:19:47+01:00 Comparative study of processes controlling carbon export in Southern Ocean environments characterised by a different hydrodynamical and ecological functioning Spatial: westlimit=142; southlimit=-64.8833; eastlimit=142; northlimit=-46.9166 Spatial: westlimit=142; southlimit=-46.9166; eastlimit=142; northlimit=-46.9166 Spatial: westlimit=142; southlimit=-48.7833; eastlimit=142; northlimit=-48.7833 Spatial: westlimit=142; southlimit=-51.0; eastlimit=142; northlimit=-51.0 Spatial: westlimit=142; southlimit=-53.7333; eastlimit=142; northlimit=-53.7333 Spatial: westlimit=142; southlimit=-56.9; eastlimit=142; northlimit=-56.9 Spatial: westlimit=142; southlimit=-60.8333; eastlimit=142; northlimit=-60.8333 Spatial: westlimit=142; southlimit=-63.9; eastlimit=142; northlimit=-63.9 Spatial: westlimit=142; southlimit=-64.8833; eastlimit=142; northlimit=-64.8833 Spatial: uplimit=4456; downlimit=5 Spatial: uplimit=2001; downlimit=5 Spatial: uplimit=4166; downlimit=4 Spatial: uplimit=3862; downlimit=5 Spatial: uplimit=3098; downlimit=5 Spatial: uplimit=4203; downlimit=5 Spatial: uplimit=3749; downlimit=6 Spatial: uplimit=2250; downlimit=6 Temporal: From 2001-11-03 to 2001-12-04 https://researchdata.edu.au/comparative-study-processes-ecological-functioning/2822325 unknown Australian Ocean Data Network https://researchdata.edu.au/comparative-study-processes-ecological-functioning/2822325 ASAC_1343 Dataset DOI AU/AADC > Australian Antarctic Data Centre, Australia biota geoscientificInformation oceans EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > CARBON NITRATE OXYGEN PHOSPHATE SILICATE TRACE ELEMENTS OCEAN CHEMISTRY OCEAN PRESSURE > WATER PRESSURE OCEAN TEMPERATURE > WATER TEMPERATURE SALINITY/DENSITY > SALINITY BIOLOGICAL CLASSIFICATION > PROTISTS > FLAGELLATES FLAGELLATES > dataset ftands 2023-11-06T23:53:30Z Progress Code: completed Preliminary Metadata record for data expected from ASAC Project 1343 See the link below for public details on this project. Comparative study of the processes controlling carbon export in Southern Ocean environments characterised by a different hydrodynamical and ecological functioning. Work on this project was carried out on Voyage 3 of the Aurora Australis (CLIVAR) of the 2001 and 2002 season. Work at sea target sampling sites were the 8 'particle stations' along the CLIVAR SR3 repeat transect: the SAZ at 47 degrees and 49 degrees S; the SAF at 51 degrees S; the PFZ at 54 degrees S; the IPFZ at 57 degrees S; the SPZ at 59 degrees and 61 degrees S; the SACCF at 63 degrees S and the SSIZ at 64 degrees S. Some of these (64 degrees, 61 degrees and 51 degrees S) were sampled again on the way back to assess temporal evolution. All proxy studies (new production; Ba; delta30Si; 234Th-deficit) were done at each particle station but not necessarily on the same CTD casts. New production assessment Surface water (at 5, 25, 50 and 70m) was sampled with the CTD rosette at all particle stations. Different aliquots of 1L seawater were spiked with 15N-nitrate, 15N-ammonium or 15N-urea. All samples were spiked with 13C-bicarbonate; the latter in order to assess net primary production rates. Incubations (12 H) were done in a thermo stated algal cabinet, using appropriate neutral density screens for samples from depths below 5m. The samples were submitted to a constant light flux of 0.7x10power16 quanta/cm2/sec. Furthermore, samples from 5m depth were amended with increasing doses of ammonium (+0.1 micro M; +0.25 micro M; +0.5 micro M and +1 micro M) having natural 15N/14N abundance to assess susceptibility of N-uptake (ammonium, nitrate, urea) to ammonium. Similar experiments were run for three iron amended and control cultures in collaboration with Pete Sedwick, Dave Hutchins and Phil Boyd. Analysis of ammonium related to the incubation work was done on board by colorimetry. As a side product we ... Dataset aurora australis Southern Ocean Research Data Australia (Australian National Data Service - ANDS) Southern Ocean |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
biota geoscientificInformation oceans EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > CARBON NITRATE OXYGEN PHOSPHATE SILICATE TRACE ELEMENTS OCEAN CHEMISTRY OCEAN PRESSURE > WATER PRESSURE OCEAN TEMPERATURE > WATER TEMPERATURE SALINITY/DENSITY > SALINITY BIOLOGICAL CLASSIFICATION > PROTISTS > FLAGELLATES FLAGELLATES > |
spellingShingle |
biota geoscientificInformation oceans EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > CARBON NITRATE OXYGEN PHOSPHATE SILICATE TRACE ELEMENTS OCEAN CHEMISTRY OCEAN PRESSURE > WATER PRESSURE OCEAN TEMPERATURE > WATER TEMPERATURE SALINITY/DENSITY > SALINITY BIOLOGICAL CLASSIFICATION > PROTISTS > FLAGELLATES FLAGELLATES > Comparative study of processes controlling carbon export in Southern Ocean environments characterised by a different hydrodynamical and ecological functioning |
topic_facet |
biota geoscientificInformation oceans EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > CARBON NITRATE OXYGEN PHOSPHATE SILICATE TRACE ELEMENTS OCEAN CHEMISTRY OCEAN PRESSURE > WATER PRESSURE OCEAN TEMPERATURE > WATER TEMPERATURE SALINITY/DENSITY > SALINITY BIOLOGICAL CLASSIFICATION > PROTISTS > FLAGELLATES FLAGELLATES > |
description |
Progress Code: completed Preliminary Metadata record for data expected from ASAC Project 1343 See the link below for public details on this project. Comparative study of the processes controlling carbon export in Southern Ocean environments characterised by a different hydrodynamical and ecological functioning. Work on this project was carried out on Voyage 3 of the Aurora Australis (CLIVAR) of the 2001 and 2002 season. Work at sea target sampling sites were the 8 'particle stations' along the CLIVAR SR3 repeat transect: the SAZ at 47 degrees and 49 degrees S; the SAF at 51 degrees S; the PFZ at 54 degrees S; the IPFZ at 57 degrees S; the SPZ at 59 degrees and 61 degrees S; the SACCF at 63 degrees S and the SSIZ at 64 degrees S. Some of these (64 degrees, 61 degrees and 51 degrees S) were sampled again on the way back to assess temporal evolution. All proxy studies (new production; Ba; delta30Si; 234Th-deficit) were done at each particle station but not necessarily on the same CTD casts. New production assessment Surface water (at 5, 25, 50 and 70m) was sampled with the CTD rosette at all particle stations. Different aliquots of 1L seawater were spiked with 15N-nitrate, 15N-ammonium or 15N-urea. All samples were spiked with 13C-bicarbonate; the latter in order to assess net primary production rates. Incubations (12 H) were done in a thermo stated algal cabinet, using appropriate neutral density screens for samples from depths below 5m. The samples were submitted to a constant light flux of 0.7x10power16 quanta/cm2/sec. Furthermore, samples from 5m depth were amended with increasing doses of ammonium (+0.1 micro M; +0.25 micro M; +0.5 micro M and +1 micro M) having natural 15N/14N abundance to assess susceptibility of N-uptake (ammonium, nitrate, urea) to ammonium. Similar experiments were run for three iron amended and control cultures in collaboration with Pete Sedwick, Dave Hutchins and Phil Boyd. Analysis of ammonium related to the incubation work was done on board by colorimetry. As a side product we ... |
format |
Dataset |
title |
Comparative study of processes controlling carbon export in Southern Ocean environments characterised by a different hydrodynamical and ecological functioning |
title_short |
Comparative study of processes controlling carbon export in Southern Ocean environments characterised by a different hydrodynamical and ecological functioning |
title_full |
Comparative study of processes controlling carbon export in Southern Ocean environments characterised by a different hydrodynamical and ecological functioning |
title_fullStr |
Comparative study of processes controlling carbon export in Southern Ocean environments characterised by a different hydrodynamical and ecological functioning |
title_full_unstemmed |
Comparative study of processes controlling carbon export in Southern Ocean environments characterised by a different hydrodynamical and ecological functioning |
title_sort |
comparative study of processes controlling carbon export in southern ocean environments characterised by a different hydrodynamical and ecological functioning |
publisher |
Australian Ocean Data Network |
url |
https://researchdata.edu.au/comparative-study-processes-ecological-functioning/2822325 |
op_coverage |
Spatial: westlimit=142; southlimit=-64.8833; eastlimit=142; northlimit=-46.9166 Spatial: westlimit=142; southlimit=-46.9166; eastlimit=142; northlimit=-46.9166 Spatial: westlimit=142; southlimit=-48.7833; eastlimit=142; northlimit=-48.7833 Spatial: westlimit=142; southlimit=-51.0; eastlimit=142; northlimit=-51.0 Spatial: westlimit=142; southlimit=-53.7333; eastlimit=142; northlimit=-53.7333 Spatial: westlimit=142; southlimit=-56.9; eastlimit=142; northlimit=-56.9 Spatial: westlimit=142; southlimit=-60.8333; eastlimit=142; northlimit=-60.8333 Spatial: westlimit=142; southlimit=-63.9; eastlimit=142; northlimit=-63.9 Spatial: westlimit=142; southlimit=-64.8833; eastlimit=142; northlimit=-64.8833 Spatial: uplimit=4456; downlimit=5 Spatial: uplimit=2001; downlimit=5 Spatial: uplimit=4166; downlimit=4 Spatial: uplimit=3862; downlimit=5 Spatial: uplimit=3098; downlimit=5 Spatial: uplimit=4203; downlimit=5 Spatial: uplimit=3749; downlimit=6 Spatial: uplimit=2250; downlimit=6 Temporal: From 2001-11-03 to 2001-12-04 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
aurora australis Southern Ocean |
genre_facet |
aurora australis Southern Ocean |
op_source |
AU/AADC > Australian Antarctic Data Centre, Australia |
op_relation |
https://researchdata.edu.au/comparative-study-processes-ecological-functioning/2822325 ASAC_1343 Dataset DOI |
_version_ |
1784267175929839616 |