Downward fluxes of biogenic material in Bransfield Strait, Antarctica
Time-series sediment traps were deployed to investigate the temporal evolution of particle fluxes in eastern and central Bransfield Strait, from December 1999–December 2000. Particle fluxes showed large seasonal variation at both trap sites. In eastern Bransfield Strait, summer mass fluxes were two...
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2004
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Online Access: | http://dx.doi.org/10.1017/s0954102004002032 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102004002032 |
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crcambridgeupr:10.1017/s0954102004002032 2024-03-03T08:37:53+00:00 Downward fluxes of biogenic material in Bransfield Strait, Antarctica KIM, DONGSEON KIM, DONG-YUP KIM, YOUNG-JUNE KANG, YOUNG-CHUL SHIM, JEONGHEE 2004 http://dx.doi.org/10.1017/s0954102004002032 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102004002032 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 16, issue 3, page 227-237 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2004 crcambridgeupr https://doi.org/10.1017/s0954102004002032 2024-02-08T08:46:31Z Time-series sediment traps were deployed to investigate the temporal evolution of particle fluxes in eastern and central Bransfield Strait, from December 1999–December 2000. Particle fluxes showed large seasonal variation at both trap sites. In eastern Bransfield Strait, summer mass fluxes were two orders of magnitude higher than winter mass fluxes, while in central Bransfield Strait, almost 99% of the annual mass flux (33 g m −2 ) was collected in a 40-day period from December–January. Export flux also exhibited a high regional variability. This regional variability is probably due to central Bransfield Strait's strong surface current, which carries most settling particles produced in the surface waters away from the mooring site during the low summer flux period. The relatively low biogenic silica to organic carbon ratios (a range of 0.29–1.4) and high lithogenic fluxes (41% of total mass flux) indicate that the growth of phytoplankton is not limited by the micronutrient iron in eastern Bransfield Strait. The annual flux of organic carbon in eastern Bransfield Strait was 6.8 g C −2 , which is three times higher than the flux measured in central Bransfield Strait (2.2 g C −2 ). Organic carbon flux in eastern Bransfield Strait is relatively high for the Southern Ocean, possibly due to fast-sinking faecal pellets that lead to less decomposition of organic material in the water column. Calculations suggest that approximately 7.2% of the organic carbon produced at the surface in eastern Bransfield Strait is exported to a depth of 678 m. This exceeds the maximum calculated export of primary production to a depth of 1000 m in the Atlantic and Southern oceans. Article in Journal/Newspaper Antarc* Antarctic Science Antarctica Bransfield Strait Southern Ocean Cambridge University Press Bransfield Strait Southern Ocean Antarctic Science 16 3 227 237 |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
topic |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Geology Ecology, Evolution, Behavior and Systematics Oceanography KIM, DONGSEON KIM, DONG-YUP KIM, YOUNG-JUNE KANG, YOUNG-CHUL SHIM, JEONGHEE Downward fluxes of biogenic material in Bransfield Strait, Antarctica |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Time-series sediment traps were deployed to investigate the temporal evolution of particle fluxes in eastern and central Bransfield Strait, from December 1999–December 2000. Particle fluxes showed large seasonal variation at both trap sites. In eastern Bransfield Strait, summer mass fluxes were two orders of magnitude higher than winter mass fluxes, while in central Bransfield Strait, almost 99% of the annual mass flux (33 g m −2 ) was collected in a 40-day period from December–January. Export flux also exhibited a high regional variability. This regional variability is probably due to central Bransfield Strait's strong surface current, which carries most settling particles produced in the surface waters away from the mooring site during the low summer flux period. The relatively low biogenic silica to organic carbon ratios (a range of 0.29–1.4) and high lithogenic fluxes (41% of total mass flux) indicate that the growth of phytoplankton is not limited by the micronutrient iron in eastern Bransfield Strait. The annual flux of organic carbon in eastern Bransfield Strait was 6.8 g C −2 , which is three times higher than the flux measured in central Bransfield Strait (2.2 g C −2 ). Organic carbon flux in eastern Bransfield Strait is relatively high for the Southern Ocean, possibly due to fast-sinking faecal pellets that lead to less decomposition of organic material in the water column. Calculations suggest that approximately 7.2% of the organic carbon produced at the surface in eastern Bransfield Strait is exported to a depth of 678 m. This exceeds the maximum calculated export of primary production to a depth of 1000 m in the Atlantic and Southern oceans. |
format |
Article in Journal/Newspaper |
author |
KIM, DONGSEON KIM, DONG-YUP KIM, YOUNG-JUNE KANG, YOUNG-CHUL SHIM, JEONGHEE |
author_facet |
KIM, DONGSEON KIM, DONG-YUP KIM, YOUNG-JUNE KANG, YOUNG-CHUL SHIM, JEONGHEE |
author_sort |
KIM, DONGSEON |
title |
Downward fluxes of biogenic material in Bransfield Strait, Antarctica |
title_short |
Downward fluxes of biogenic material in Bransfield Strait, Antarctica |
title_full |
Downward fluxes of biogenic material in Bransfield Strait, Antarctica |
title_fullStr |
Downward fluxes of biogenic material in Bransfield Strait, Antarctica |
title_full_unstemmed |
Downward fluxes of biogenic material in Bransfield Strait, Antarctica |
title_sort |
downward fluxes of biogenic material in bransfield strait, antarctica |
publisher |
Cambridge University Press (CUP) |
publishDate |
2004 |
url |
http://dx.doi.org/10.1017/s0954102004002032 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102004002032 |
geographic |
Bransfield Strait Southern Ocean |
geographic_facet |
Bransfield Strait Southern Ocean |
genre |
Antarc* Antarctic Science Antarctica Bransfield Strait Southern Ocean |
genre_facet |
Antarc* Antarctic Science Antarctica Bransfield Strait Southern Ocean |
op_source |
Antarctic Science volume 16, issue 3, page 227-237 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102004002032 |
container_title |
Antarctic Science |
container_volume |
16 |
container_issue |
3 |
container_start_page |
227 |
op_container_end_page |
237 |
_version_ |
1792502604249432064 |