Response of Antarctic benthic communities to disturbance: first results from the artificial Benthic Disturbance Experiment on the eastern Weddell Sea Shelf, Antarctica
12 pages, 4 figures, 5 tables The long-term benthic disturbance experiment (BENDEX) was started on the eastern Weddell Sea shelf off Austasen (Antarctica) during ‘Polarstern’ cruise ANT XXI/2 in December 2003 to simulate the impact of grounding icebergs on the seabed and follow the steps and timesca...
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ftcsic:oai:digital.csic.es:10261/26447 2024-02-11T09:58:50+01:00 Response of Antarctic benthic communities to disturbance: first results from the artificial Benthic Disturbance Experiment on the eastern Weddell Sea Shelf, Antarctica Gerdes, Dieter Isla, Enrique Rossi, Sergio Knust, R. Mintenbeck, K. 2008-07-26 5867 bytes application/pdf http://hdl.handle.net/10261/26447 https://doi.org/10.1007/s00300-008-0488-y en eng Springer https://doi.org/10.1007/s00300-008-0488-y Polar Biology 31(12): 1459-1480 (2008) 0722-4060 http://hdl.handle.net/10261/26447 doi:10.1007/s00300-008-0488-y 1432-2056 none Macrobenthos Demersal fish Antarctica Disturbance artículo http://purl.org/coar/resource_type/c_6501 2008 ftcsic https://doi.org/10.1007/s00300-008-0488-y 2024-01-16T09:27:45Z 12 pages, 4 figures, 5 tables The long-term benthic disturbance experiment (BENDEX) was started on the eastern Weddell Sea shelf off Austasen (Antarctica) during ‘Polarstern’ cruise ANT XXI/2 in December 2003 to simulate the impact of grounding icebergs on the seabed and follow the steps and timescales of recovery of disturbed benthos and demersal fish communities. Here, we report the basic approach and first results for this experimental field study. By means of 11 densely-placed hauls with a modified bottom trawl, a seabed area of approximately 100 × 1000 m was artificially scoured to inflict a similar damage to the benthic habitats as a grounding iceberg. Before the disturbance event and 11 days after it, the seafloor communities were sampled (invertebrate assemblages by multibox corers, the fish fauna by trawl hauls) and comparatively analyzed. Sediment texture and chemistry was not significantly altered by the heavy disturbance inflicted by repeated trawling, whereas the fauna was negatively affected. Invertebrate benthic biomass was drastically reduced by a factor of 10, while mean abundances were only slightly reduced. Demersal fish biomass and abundance were slightly but not significantly smaller after the disturbance. Effects of disturbance became more evident in the composition of the fish fauna, with Trematomus pennelli and T. hansoni being dominant at disturbed sites, whereas Chionodraco myersi was the dominant species in trawl catches from undisturbed stations Peer reviewed Article in Journal/Newspaper Antarc* Antarctic Antarctica Iceberg* Polar Biology Weddell Sea Digital.CSIC (Spanish National Research Council) Antarctic Weddell Weddell Sea Polar Biology 31 12 1469 1480 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Macrobenthos Demersal fish Antarctica Disturbance |
spellingShingle |
Macrobenthos Demersal fish Antarctica Disturbance Gerdes, Dieter Isla, Enrique Rossi, Sergio Knust, R. Mintenbeck, K. Response of Antarctic benthic communities to disturbance: first results from the artificial Benthic Disturbance Experiment on the eastern Weddell Sea Shelf, Antarctica |
topic_facet |
Macrobenthos Demersal fish Antarctica Disturbance |
description |
12 pages, 4 figures, 5 tables The long-term benthic disturbance experiment (BENDEX) was started on the eastern Weddell Sea shelf off Austasen (Antarctica) during ‘Polarstern’ cruise ANT XXI/2 in December 2003 to simulate the impact of grounding icebergs on the seabed and follow the steps and timescales of recovery of disturbed benthos and demersal fish communities. Here, we report the basic approach and first results for this experimental field study. By means of 11 densely-placed hauls with a modified bottom trawl, a seabed area of approximately 100 × 1000 m was artificially scoured to inflict a similar damage to the benthic habitats as a grounding iceberg. Before the disturbance event and 11 days after it, the seafloor communities were sampled (invertebrate assemblages by multibox corers, the fish fauna by trawl hauls) and comparatively analyzed. Sediment texture and chemistry was not significantly altered by the heavy disturbance inflicted by repeated trawling, whereas the fauna was negatively affected. Invertebrate benthic biomass was drastically reduced by a factor of 10, while mean abundances were only slightly reduced. Demersal fish biomass and abundance were slightly but not significantly smaller after the disturbance. Effects of disturbance became more evident in the composition of the fish fauna, with Trematomus pennelli and T. hansoni being dominant at disturbed sites, whereas Chionodraco myersi was the dominant species in trawl catches from undisturbed stations Peer reviewed |
format |
Article in Journal/Newspaper |
author |
Gerdes, Dieter Isla, Enrique Rossi, Sergio Knust, R. Mintenbeck, K. |
author_facet |
Gerdes, Dieter Isla, Enrique Rossi, Sergio Knust, R. Mintenbeck, K. |
author_sort |
Gerdes, Dieter |
title |
Response of Antarctic benthic communities to disturbance: first results from the artificial Benthic Disturbance Experiment on the eastern Weddell Sea Shelf, Antarctica |
title_short |
Response of Antarctic benthic communities to disturbance: first results from the artificial Benthic Disturbance Experiment on the eastern Weddell Sea Shelf, Antarctica |
title_full |
Response of Antarctic benthic communities to disturbance: first results from the artificial Benthic Disturbance Experiment on the eastern Weddell Sea Shelf, Antarctica |
title_fullStr |
Response of Antarctic benthic communities to disturbance: first results from the artificial Benthic Disturbance Experiment on the eastern Weddell Sea Shelf, Antarctica |
title_full_unstemmed |
Response of Antarctic benthic communities to disturbance: first results from the artificial Benthic Disturbance Experiment on the eastern Weddell Sea Shelf, Antarctica |
title_sort |
response of antarctic benthic communities to disturbance: first results from the artificial benthic disturbance experiment on the eastern weddell sea shelf, antarctica |
publisher |
Springer |
publishDate |
2008 |
url |
http://hdl.handle.net/10261/26447 https://doi.org/10.1007/s00300-008-0488-y |
geographic |
Antarctic Weddell Weddell Sea |
geographic_facet |
Antarctic Weddell Weddell Sea |
genre |
Antarc* Antarctic Antarctica Iceberg* Polar Biology Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctica Iceberg* Polar Biology Weddell Sea |
op_relation |
https://doi.org/10.1007/s00300-008-0488-y Polar Biology 31(12): 1459-1480 (2008) 0722-4060 http://hdl.handle.net/10261/26447 doi:10.1007/s00300-008-0488-y 1432-2056 |
op_rights |
none |
op_doi |
https://doi.org/10.1007/s00300-008-0488-y |
container_title |
Polar Biology |
container_volume |
31 |
container_issue |
12 |
container_start_page |
1469 |
op_container_end_page |
1480 |
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1790594629147557888 |