Relationships between Antarctic coastal and deep-sea particle fluxes: implications for the deep-sea benthos
8 pages, 3 figures Downward particle fluxes measured by means of sediment traps to a shallow semi-closed bay (Johnson’s Dock, Livingston Island) and to a deep basin in the western Bransfield Strait (Antarctic Peninsula) showed the important role of glaciers as sediment carriers and suppliers to the...
Published in: | Polar Biology |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Springer
2006
|
Subjects: | |
Online Access: | http://hdl.handle.net/10261/27424 https://doi.org/10.1007/s00300-005-0046-9 |
id |
ftcsic:oai:digital.csic.es:10261/27424 |
---|---|
record_format |
openpolar |
spelling |
ftcsic:oai:digital.csic.es:10261/27424 2024-02-11T09:57:23+01:00 Relationships between Antarctic coastal and deep-sea particle fluxes: implications for the deep-sea benthos Isla, Enrique Gerdes, Dieter Palanques, Albert Teixidó, Nuria Arntz, Wolf E. Puig, Pere 2006-03 5867 bytes application/pdf http://hdl.handle.net/10261/27424 https://doi.org/10.1007/s00300-005-0046-9 en eng Springer https://doi.org/10.1007/s00300-005-0046-9 Polar Biology 29(4): 249-256 (2006) 0722-4060 http://hdl.handle.net/10261/27424 doi:10.1007/s00300-005-0046-9 1432-2056 none artículo http://purl.org/coar/resource_type/c_6501 2006 ftcsic https://doi.org/10.1007/s00300-005-0046-9 2024-01-16T09:28:11Z 8 pages, 3 figures Downward particle fluxes measured by means of sediment traps to a shallow semi-closed bay (Johnson’s Dock, Livingston Island) and to a deep basin in the western Bransfield Strait (Antarctic Peninsula) showed the important role of glaciers as sediment carriers and suppliers to the ocean in a continent without major rivers such as Antarctica. The trap moored in Johnson’s Dock collected coarse sediment (>1 mm mesh) not observed in the offshore traps, which mainly received fine sediment and faecal pellets. The annual total mass flux (TMF) to the coastal zone (15 m) was 900- and three times that to mid-depth (500 m) and near-bottom (1,000 m) traps, respectively. The fine sediment flux was especially important due to its biogenic particle contents. Despite the differences in TMF to the coastal zone and near the bottom in the deep basin, the organic carbon (OC) flux was similar in both environments (16 and 18 g m−2, respectively), whereas biogenic silica (BSi) flux increased three times with depth (75 and 201 g m−2, respectively). These fluxes imply that an important part of the particulate organic matter deposited in the coastal zone is advected basinward within the fine-particle flux. Thus, benthos in deep areas depends largely on the lateral transport of biogenic material produced in shallow environments near the coast. It is also proposed that the disintegration of Antarctic ice shelves and the consequent increment of ice calving may produce local devastations of ecological importance not only on the shallow but also on the rich Antarctic deep-sea benthic communities due to an increment of iceberg scouring and reduction of the organic matter supply Peer reviewed Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Bransfield Strait Ice Shelves Iceberg* Livingston Island Polar Biology Digital.CSIC (Spanish National Research Council) Antarctic Antarctic Peninsula Bransfield Strait Livingston Island ENVELOPE(-60.500,-60.500,-62.600,-62.600) Polar Biology 29 4 249 256 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
description |
8 pages, 3 figures Downward particle fluxes measured by means of sediment traps to a shallow semi-closed bay (Johnson’s Dock, Livingston Island) and to a deep basin in the western Bransfield Strait (Antarctic Peninsula) showed the important role of glaciers as sediment carriers and suppliers to the ocean in a continent without major rivers such as Antarctica. The trap moored in Johnson’s Dock collected coarse sediment (>1 mm mesh) not observed in the offshore traps, which mainly received fine sediment and faecal pellets. The annual total mass flux (TMF) to the coastal zone (15 m) was 900- and three times that to mid-depth (500 m) and near-bottom (1,000 m) traps, respectively. The fine sediment flux was especially important due to its biogenic particle contents. Despite the differences in TMF to the coastal zone and near the bottom in the deep basin, the organic carbon (OC) flux was similar in both environments (16 and 18 g m−2, respectively), whereas biogenic silica (BSi) flux increased three times with depth (75 and 201 g m−2, respectively). These fluxes imply that an important part of the particulate organic matter deposited in the coastal zone is advected basinward within the fine-particle flux. Thus, benthos in deep areas depends largely on the lateral transport of biogenic material produced in shallow environments near the coast. It is also proposed that the disintegration of Antarctic ice shelves and the consequent increment of ice calving may produce local devastations of ecological importance not only on the shallow but also on the rich Antarctic deep-sea benthic communities due to an increment of iceberg scouring and reduction of the organic matter supply Peer reviewed |
format |
Article in Journal/Newspaper |
author |
Isla, Enrique Gerdes, Dieter Palanques, Albert Teixidó, Nuria Arntz, Wolf E. Puig, Pere |
spellingShingle |
Isla, Enrique Gerdes, Dieter Palanques, Albert Teixidó, Nuria Arntz, Wolf E. Puig, Pere Relationships between Antarctic coastal and deep-sea particle fluxes: implications for the deep-sea benthos |
author_facet |
Isla, Enrique Gerdes, Dieter Palanques, Albert Teixidó, Nuria Arntz, Wolf E. Puig, Pere |
author_sort |
Isla, Enrique |
title |
Relationships between Antarctic coastal and deep-sea particle fluxes: implications for the deep-sea benthos |
title_short |
Relationships between Antarctic coastal and deep-sea particle fluxes: implications for the deep-sea benthos |
title_full |
Relationships between Antarctic coastal and deep-sea particle fluxes: implications for the deep-sea benthos |
title_fullStr |
Relationships between Antarctic coastal and deep-sea particle fluxes: implications for the deep-sea benthos |
title_full_unstemmed |
Relationships between Antarctic coastal and deep-sea particle fluxes: implications for the deep-sea benthos |
title_sort |
relationships between antarctic coastal and deep-sea particle fluxes: implications for the deep-sea benthos |
publisher |
Springer |
publishDate |
2006 |
url |
http://hdl.handle.net/10261/27424 https://doi.org/10.1007/s00300-005-0046-9 |
long_lat |
ENVELOPE(-60.500,-60.500,-62.600,-62.600) |
geographic |
Antarctic Antarctic Peninsula Bransfield Strait Livingston Island |
geographic_facet |
Antarctic Antarctic Peninsula Bransfield Strait Livingston Island |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Bransfield Strait Ice Shelves Iceberg* Livingston Island Polar Biology |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Bransfield Strait Ice Shelves Iceberg* Livingston Island Polar Biology |
op_relation |
https://doi.org/10.1007/s00300-005-0046-9 Polar Biology 29(4): 249-256 (2006) 0722-4060 http://hdl.handle.net/10261/27424 doi:10.1007/s00300-005-0046-9 1432-2056 |
op_rights |
none |
op_doi |
https://doi.org/10.1007/s00300-005-0046-9 |
container_title |
Polar Biology |
container_volume |
29 |
container_issue |
4 |
container_start_page |
249 |
op_container_end_page |
256 |
_version_ |
1790609677470400512 |