Distribution of particulate organic matter (POM) in the Southern Ocean during BROKE-West (30 degrees E-80 degrees E)
The distribution of particulate organic carbon (POC), nitrogen (PON) and biogenic silica (BSi) in the south Indian sector of the Southern Ocean was investigated during summer 2006 as part of the BROKE-West survey. Differences in the distribution of particulate organic matter (POM) were attributed to...
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ftunivtasecite:oai:ecite.utas.edu.au:71305 2023-05-15T14:02:30+02:00 Distribution of particulate organic matter (POM) in the Southern Ocean during BROKE-West (30 degrees E-80 degrees E) Pasquer, B Mongin, M Johnston, N Wright, SW 2010 https://doi.org/10.1016/j.dsr2.2008.12.040 http://ecite.utas.edu.au/71305 en eng Pergamon-Elsevier Science Ltd http://dx.doi.org/10.1016/j.dsr2.2008.12.040 Pasquer, B and Mongin, M and Johnston, N and Wright, SW, Distribution of particulate organic matter (POM) in the Southern Ocean during BROKE-West (30 degrees E-80 degrees E), Deep-Sea Research. Part 2: Topical Studies in Oceanography, 57, (9-10) pp. 779-793. ISSN 0967-0645 (2010) [Refereed Article] http://ecite.utas.edu.au/71305 Earth Sciences Oceanography Chemical Oceanography Refereed Article PeerReviewed 2010 ftunivtasecite https://doi.org/10.1016/j.dsr2.2008.12.040 2019-12-13T21:38:51Z The distribution of particulate organic carbon (POC), nitrogen (PON) and biogenic silica (BSi) in the south Indian sector of the Southern Ocean was investigated during summer 2006 as part of the BROKE-West survey. Differences in the distribution of particulate organic matter (POM) were attributed to spatial pattern related to the influence of regional hydrography and sea-ice retreat pattern. Offshore to the west, low NCP and POM accumulation were observed in a region influenced by the Weddell gyre, whereas to the east higher NCP and POM were found in a region influenced by the southern Boundary of the ACC and the southern Antarctic Circumpolar Front circulation (SB-sACCf). The highest NCP (5.4 molC m(-2)), POC (1.6 molC m(-2)) and BSi stocks (0.5 molSi m(-2)) were observed in the coastal/Marginal Ice Zone (MIZ). Spatial differences were also found in particulate elemental composition, with lower POC:PON found in the coastal zone, illustrating the presence of an active autotrophic community. Analysis of elemental ratios also showed a strong decoupling between silica and nitrogen cycling over the whole survey region, particularly in association with the circulation of SB-sACCf. Estimates of silica and nitrogen export production illustrate this decoupling with BSi exported production. BSi export ranged between 54 and 94% of BSi production whereas PON ranged between 4 and 70%, suggesting that organic matter was actively recycled in the surface water, hence illustrating the efficiency of the silicate pump in this region. Article in Journal/Newspaper Antarc* Antarctic Sea ice Southern Ocean eCite UTAS (University of Tasmania) Antarctic Indian Southern Ocean Weddell Deep Sea Research Part II: Topical Studies in Oceanography 57 9-10 779 793 |
institution |
Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Earth Sciences Oceanography Chemical Oceanography |
spellingShingle |
Earth Sciences Oceanography Chemical Oceanography Pasquer, B Mongin, M Johnston, N Wright, SW Distribution of particulate organic matter (POM) in the Southern Ocean during BROKE-West (30 degrees E-80 degrees E) |
topic_facet |
Earth Sciences Oceanography Chemical Oceanography |
description |
The distribution of particulate organic carbon (POC), nitrogen (PON) and biogenic silica (BSi) in the south Indian sector of the Southern Ocean was investigated during summer 2006 as part of the BROKE-West survey. Differences in the distribution of particulate organic matter (POM) were attributed to spatial pattern related to the influence of regional hydrography and sea-ice retreat pattern. Offshore to the west, low NCP and POM accumulation were observed in a region influenced by the Weddell gyre, whereas to the east higher NCP and POM were found in a region influenced by the southern Boundary of the ACC and the southern Antarctic Circumpolar Front circulation (SB-sACCf). The highest NCP (5.4 molC m(-2)), POC (1.6 molC m(-2)) and BSi stocks (0.5 molSi m(-2)) were observed in the coastal/Marginal Ice Zone (MIZ). Spatial differences were also found in particulate elemental composition, with lower POC:PON found in the coastal zone, illustrating the presence of an active autotrophic community. Analysis of elemental ratios also showed a strong decoupling between silica and nitrogen cycling over the whole survey region, particularly in association with the circulation of SB-sACCf. Estimates of silica and nitrogen export production illustrate this decoupling with BSi exported production. BSi export ranged between 54 and 94% of BSi production whereas PON ranged between 4 and 70%, suggesting that organic matter was actively recycled in the surface water, hence illustrating the efficiency of the silicate pump in this region. |
format |
Article in Journal/Newspaper |
author |
Pasquer, B Mongin, M Johnston, N Wright, SW |
author_facet |
Pasquer, B Mongin, M Johnston, N Wright, SW |
author_sort |
Pasquer, B |
title |
Distribution of particulate organic matter (POM) in the Southern Ocean during BROKE-West (30 degrees E-80 degrees E) |
title_short |
Distribution of particulate organic matter (POM) in the Southern Ocean during BROKE-West (30 degrees E-80 degrees E) |
title_full |
Distribution of particulate organic matter (POM) in the Southern Ocean during BROKE-West (30 degrees E-80 degrees E) |
title_fullStr |
Distribution of particulate organic matter (POM) in the Southern Ocean during BROKE-West (30 degrees E-80 degrees E) |
title_full_unstemmed |
Distribution of particulate organic matter (POM) in the Southern Ocean during BROKE-West (30 degrees E-80 degrees E) |
title_sort |
distribution of particulate organic matter (pom) in the southern ocean during broke-west (30 degrees e-80 degrees e) |
publisher |
Pergamon-Elsevier Science Ltd |
publishDate |
2010 |
url |
https://doi.org/10.1016/j.dsr2.2008.12.040 http://ecite.utas.edu.au/71305 |
geographic |
Antarctic Indian Southern Ocean Weddell |
geographic_facet |
Antarctic Indian Southern Ocean Weddell |
genre |
Antarc* Antarctic Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Sea ice Southern Ocean |
op_relation |
http://dx.doi.org/10.1016/j.dsr2.2008.12.040 Pasquer, B and Mongin, M and Johnston, N and Wright, SW, Distribution of particulate organic matter (POM) in the Southern Ocean during BROKE-West (30 degrees E-80 degrees E), Deep-Sea Research. Part 2: Topical Studies in Oceanography, 57, (9-10) pp. 779-793. ISSN 0967-0645 (2010) [Refereed Article] http://ecite.utas.edu.au/71305 |
op_doi |
https://doi.org/10.1016/j.dsr2.2008.12.040 |
container_title |
Deep Sea Research Part II: Topical Studies in Oceanography |
container_volume |
57 |
container_issue |
9-10 |
container_start_page |
779 |
op_container_end_page |
793 |
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