Maud Rise - a snapshot through the water column
The benthic fauna was investigated during the expedition ANT-XXIV/2 (2007/08) in relation to oceanographic features, biogeochemical properties and sediment characteristics, as well as the benthic, pelagic and air-breathing fauna. The results document that Maud Rise (MR) differs distinctly from surro...
Published in: | Deep Sea Research Part I: Oceanographic Research Papers |
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Online Access: | http://nora.nerc.ac.uk/id/eprint/15274/ |
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ftnerc:oai:nora.nerc.ac.uk:15274 2023-05-15T13:45:11+02:00 Maud Rise - a snapshot through the water column Brandt, A. Bathmann, U. Brix, S. Cisewski, B. Flores, H. Göcke, C. Janussen, D. Krägefsky, S. Kruse, S. Leach, H. Linse, Katrin Pakhomov, E. Peeken, I. Riehl, T. Sauter, E. Sachs, O. Schüller, M. Schrödl, M. Schwabe, E. Strass, V. van Franeker, J.A. Wilmsen, E. 2011 http://nora.nerc.ac.uk/id/eprint/15274/ unknown Elsevier Brandt, A.; Bathmann, U.; Brix, S.; Cisewski, B.; Flores, H.; Göcke, C.; Janussen, D.; Krägefsky, S.; Kruse, S.; Leach, H.; Linse, Katrin orcid:0000-0003-3477-3047 Pakhomov, E.; Peeken, I.; Riehl, T.; Sauter, E.; Sachs, O.; Schüller, M.; Schrödl, M.; Schwabe, E.; Strass, V.; van Franeker, J.A.; Wilmsen, E. 2011 Maud Rise - a snapshot through the water column. Deep Sea Research II, 58 (19-20). 1962-1982. https://doi.org/10.1016/j.dsr.2011.01.008 <https://doi.org/10.1016/j.dsr.2011.01.008> Marine Sciences Biology and Microbiology Publication - Article PeerReviewed 2011 ftnerc https://doi.org/10.1016/j.dsr.2011.01.008 2023-02-04T19:29:44Z The benthic fauna was investigated during the expedition ANT-XXIV/2 (2007/08) in relation to oceanographic features, biogeochemical properties and sediment characteristics, as well as the benthic, pelagic and air-breathing fauna. The results document that Maud Rise (MR) differs distinctly from surrounding deep-sea basins investigated during previous Southern Ocean expeditions (ANDEEP 2002, 2005). Considering all taxa, the overall similarity between MR and adjacent stations was low (∼20% Bray-Curtis-Similarity), and analyses of single taxa show obvious differences in species composition, abundances and densities. The composition and diversity of bivalves of MR are characterised by extremely high abundances of three species, especially the small sized Vesicomya spp. Exceptionally high gastropod abundance at MR is due to the single species Onoba subantarctica wilkesiana, a small brooder that may prey upon abundant benthic foraminiferas. The abundance and diversity of isopods also show that one family, Haplomunnidae, occurs with a surprisingly high number of individuals at MR while this family was not found at any of the 40 bathyal and abyssal ANDEEP stations. Similarly, polychaetes, especially the tube-dwelling, suspension-feeder fraction, are represented by species not found at the comparison stations. Sponges comprise almost exclusively small specimens in relatively high numbers, especially a few species of Polymastiidae. Water-column sampling from the surface to the seafloor, including observations of top predators, indicate the existence of a prospering pelagic food web. Local concentrations of top predators and zooplankton are associated with a rich ice-edge bloom located over the northern slope of MR. There the sea ice melts, which is probably accelerated by the advection of warm water at intermediate depth. Over the southern slope, high concentrations of Antarctic krill (Euphausia superba) occur under dense sea ice and attract Antarctic Minke Whales (Balaenoptera bonaerensis) and several seabird species. ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Balaenoptera bonaerensis Euphausia superba Sea ice Southern Ocean Natural Environment Research Council: NERC Open Research Archive Antarctic Southern Ocean Maud Rise ENVELOPE(3.000,3.000,-66.000,-66.000) Bray ENVELOPE(-114.067,-114.067,-74.833,-74.833) Deep Sea Research Part I: Oceanographic Research Papers 58 4 350 364 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
topic |
Marine Sciences Biology and Microbiology |
spellingShingle |
Marine Sciences Biology and Microbiology Brandt, A. Bathmann, U. Brix, S. Cisewski, B. Flores, H. Göcke, C. Janussen, D. Krägefsky, S. Kruse, S. Leach, H. Linse, Katrin Pakhomov, E. Peeken, I. Riehl, T. Sauter, E. Sachs, O. Schüller, M. Schrödl, M. Schwabe, E. Strass, V. van Franeker, J.A. Wilmsen, E. Maud Rise - a snapshot through the water column |
topic_facet |
Marine Sciences Biology and Microbiology |
description |
The benthic fauna was investigated during the expedition ANT-XXIV/2 (2007/08) in relation to oceanographic features, biogeochemical properties and sediment characteristics, as well as the benthic, pelagic and air-breathing fauna. The results document that Maud Rise (MR) differs distinctly from surrounding deep-sea basins investigated during previous Southern Ocean expeditions (ANDEEP 2002, 2005). Considering all taxa, the overall similarity between MR and adjacent stations was low (∼20% Bray-Curtis-Similarity), and analyses of single taxa show obvious differences in species composition, abundances and densities. The composition and diversity of bivalves of MR are characterised by extremely high abundances of three species, especially the small sized Vesicomya spp. Exceptionally high gastropod abundance at MR is due to the single species Onoba subantarctica wilkesiana, a small brooder that may prey upon abundant benthic foraminiferas. The abundance and diversity of isopods also show that one family, Haplomunnidae, occurs with a surprisingly high number of individuals at MR while this family was not found at any of the 40 bathyal and abyssal ANDEEP stations. Similarly, polychaetes, especially the tube-dwelling, suspension-feeder fraction, are represented by species not found at the comparison stations. Sponges comprise almost exclusively small specimens in relatively high numbers, especially a few species of Polymastiidae. Water-column sampling from the surface to the seafloor, including observations of top predators, indicate the existence of a prospering pelagic food web. Local concentrations of top predators and zooplankton are associated with a rich ice-edge bloom located over the northern slope of MR. There the sea ice melts, which is probably accelerated by the advection of warm water at intermediate depth. Over the southern slope, high concentrations of Antarctic krill (Euphausia superba) occur under dense sea ice and attract Antarctic Minke Whales (Balaenoptera bonaerensis) and several seabird species. ... |
format |
Article in Journal/Newspaper |
author |
Brandt, A. Bathmann, U. Brix, S. Cisewski, B. Flores, H. Göcke, C. Janussen, D. Krägefsky, S. Kruse, S. Leach, H. Linse, Katrin Pakhomov, E. Peeken, I. Riehl, T. Sauter, E. Sachs, O. Schüller, M. Schrödl, M. Schwabe, E. Strass, V. van Franeker, J.A. Wilmsen, E. |
author_facet |
Brandt, A. Bathmann, U. Brix, S. Cisewski, B. Flores, H. Göcke, C. Janussen, D. Krägefsky, S. Kruse, S. Leach, H. Linse, Katrin Pakhomov, E. Peeken, I. Riehl, T. Sauter, E. Sachs, O. Schüller, M. Schrödl, M. Schwabe, E. Strass, V. van Franeker, J.A. Wilmsen, E. |
author_sort |
Brandt, A. |
title |
Maud Rise - a snapshot through the water column |
title_short |
Maud Rise - a snapshot through the water column |
title_full |
Maud Rise - a snapshot through the water column |
title_fullStr |
Maud Rise - a snapshot through the water column |
title_full_unstemmed |
Maud Rise - a snapshot through the water column |
title_sort |
maud rise - a snapshot through the water column |
publisher |
Elsevier |
publishDate |
2011 |
url |
http://nora.nerc.ac.uk/id/eprint/15274/ |
long_lat |
ENVELOPE(3.000,3.000,-66.000,-66.000) ENVELOPE(-114.067,-114.067,-74.833,-74.833) |
geographic |
Antarctic Southern Ocean Maud Rise Bray |
geographic_facet |
Antarctic Southern Ocean Maud Rise Bray |
genre |
Antarc* Antarctic Antarctic Krill Balaenoptera bonaerensis Euphausia superba Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Krill Balaenoptera bonaerensis Euphausia superba Sea ice Southern Ocean |
op_relation |
Brandt, A.; Bathmann, U.; Brix, S.; Cisewski, B.; Flores, H.; Göcke, C.; Janussen, D.; Krägefsky, S.; Kruse, S.; Leach, H.; Linse, Katrin orcid:0000-0003-3477-3047 Pakhomov, E.; Peeken, I.; Riehl, T.; Sauter, E.; Sachs, O.; Schüller, M.; Schrödl, M.; Schwabe, E.; Strass, V.; van Franeker, J.A.; Wilmsen, E. 2011 Maud Rise - a snapshot through the water column. Deep Sea Research II, 58 (19-20). 1962-1982. https://doi.org/10.1016/j.dsr.2011.01.008 <https://doi.org/10.1016/j.dsr.2011.01.008> |
op_doi |
https://doi.org/10.1016/j.dsr.2011.01.008 |
container_title |
Deep Sea Research Part I: Oceanographic Research Papers |
container_volume |
58 |
container_issue |
4 |
container_start_page |
350 |
op_container_end_page |
364 |
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1766215841175568384 |