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 pelagic, benthic pelagic and air-breathing fauna. The results document that Maud Rise (MR) differs distinctly fr...
Published in: | Deep Sea Research Part II: Topical Studies in Oceanography |
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Language: | English |
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Online Access: | https://research.wur.nl/en/publications/maud-rise-a-snapshot-through-the-water-column https://doi.org/10.1016/j.dsr2.2011.01.008 |
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ftunivwagenin:oai:library.wur.nl:wurpubs/410280 2024-01-14T10:01:56+01:00 Maud Rise - a snapshot through the water column Brandt, A. Bathmann, U. Brix, S. Florentino De Souza Silva, A.P. van Franeker, J.A. 2011 application/pdf https://research.wur.nl/en/publications/maud-rise-a-snapshot-through-the-water-column https://doi.org/10.1016/j.dsr2.2011.01.008 en eng https://edepot.wur.nl/179787 https://research.wur.nl/en/publications/maud-rise-a-snapshot-through-the-water-column doi:10.1016/j.dsr2.2011.01.008 info:eu-repo/semantics/restrictedAccess Wageningen University & Research Deep-Sea Research. Part II, tropical studies in oceanography 58 (2011) 19-20 ISSN: 0967-0645 1st insights antarctic krill atlantic sector carbon fluxes deep-sea drake passage eastern weddell gyre pack-ice pore-water southern-ocean info:eu-repo/semantics/article Article/Letter to editor info:eu-repo/semantics/publishedVersion 2011 ftunivwagenin https://doi.org/10.1016/j.dsr2.2011.01.008 2023-12-20T23:18:54Z 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 pelagic, 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 ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Balaenoptera bonaerensis Drake Passage Euphausia superba Sea ice Southern Ocean Wageningen UR (University & Research Centre): Digital Library Antarctic Southern Ocean Drake Passage Weddell 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 II: Topical Studies in Oceanography 58 19-20 1962 1982 |
institution |
Open Polar |
collection |
Wageningen UR (University & Research Centre): Digital Library |
op_collection_id |
ftunivwagenin |
language |
English |
topic |
1st insights antarctic krill atlantic sector carbon fluxes deep-sea drake passage eastern weddell gyre pack-ice pore-water southern-ocean |
spellingShingle |
1st insights antarctic krill atlantic sector carbon fluxes deep-sea drake passage eastern weddell gyre pack-ice pore-water southern-ocean Brandt, A. Bathmann, U. Brix, S. Florentino De Souza Silva, A.P. van Franeker, J.A. Maud Rise - a snapshot through the water column |
topic_facet |
1st insights antarctic krill atlantic sector carbon fluxes deep-sea drake passage eastern weddell gyre pack-ice pore-water southern-ocean |
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 pelagic, 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 ... |
format |
Article in Journal/Newspaper |
author |
Brandt, A. Bathmann, U. Brix, S. Florentino De Souza Silva, A.P. van Franeker, J.A. |
author_facet |
Brandt, A. Bathmann, U. Brix, S. Florentino De Souza Silva, A.P. van Franeker, J.A. |
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 |
publishDate |
2011 |
url |
https://research.wur.nl/en/publications/maud-rise-a-snapshot-through-the-water-column https://doi.org/10.1016/j.dsr2.2011.01.008 |
long_lat |
ENVELOPE(3.000,3.000,-66.000,-66.000) ENVELOPE(-114.067,-114.067,-74.833,-74.833) |
geographic |
Antarctic Southern Ocean Drake Passage Weddell Maud Rise Bray |
geographic_facet |
Antarctic Southern Ocean Drake Passage Weddell Maud Rise Bray |
genre |
Antarc* Antarctic Antarctic Krill Balaenoptera bonaerensis Drake Passage Euphausia superba Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Krill Balaenoptera bonaerensis Drake Passage Euphausia superba Sea ice Southern Ocean |
op_source |
Deep-Sea Research. Part II, tropical studies in oceanography 58 (2011) 19-20 ISSN: 0967-0645 |
op_relation |
https://edepot.wur.nl/179787 https://research.wur.nl/en/publications/maud-rise-a-snapshot-through-the-water-column doi:10.1016/j.dsr2.2011.01.008 |
op_rights |
info:eu-repo/semantics/restrictedAccess Wageningen University & Research |
op_doi |
https://doi.org/10.1016/j.dsr2.2011.01.008 |
container_title |
Deep Sea Research Part II: Topical Studies in Oceanography |
container_volume |
58 |
container_issue |
19-20 |
container_start_page |
1962 |
op_container_end_page |
1982 |
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1788056744619933696 |