Megabenthos habitats influenced by nearby hydrothermal activity on the Sandwich Plate, Southern Ocean
The Sandwich Plate is known as one of the tectonically most active regions in the Southern Ocean and Antarctica, characterised by a subsurface chain of active volcanic islands (the South Sandwich Arc), submarine volcanic features, an earthquake rich area along the South Sandwich Trench and hydrother...
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ftnerc:oai:nora.nerc.ac.uk:531090 2023-05-15T13:41:46+02:00 Megabenthos habitats influenced by nearby hydrothermal activity on the Sandwich Plate, Southern Ocean Linse, Katrin Römer, Miriam Little, Crispin T.S. Marcon, Yann Bohrmann, Gerhard 2022-04-12 http://nora.nerc.ac.uk/id/eprint/531090/ https://www.sciencedirect.com/science/article/pii/S0967064522000601 unknown Elsevier Linse, Katrin orcid:0000-0003-3477-3047 Römer, Miriam; Little, Crispin T.S.; Marcon, Yann; Bohrmann, Gerhard. 2022 Megabenthos habitats influenced by nearby hydrothermal activity on the Sandwich Plate, Southern Ocean [in special issue: South Sandwich Islands – an understudied isolated Southern Ocean archipelago] Deep Sea Research Part II: Topical Studies in Oceanography, 198, 105075. 13, pp. https://doi.org/10.1016/j.dsr2.2022.105075 <https://doi.org/10.1016/j.dsr2.2022.105075> Publication - Article PeerReviewed 2022 ftnerc https://doi.org/10.1016/j.dsr2.2022.105075 2023-02-04T19:52:36Z The Sandwich Plate is known as one of the tectonically most active regions in the Southern Ocean and Antarctica, characterised by a subsurface chain of active volcanic islands (the South Sandwich Arc), submarine volcanic features, an earthquake rich area along the South Sandwich Trench and hydrothermal vents on segments of the East Scotia Ridge. In 2013 and 2019 we investigated eight potential hydrothermally active sites in the forearc, island arc and back arc of the Sandwich Plate from shallow (60 m) to abyssal (3886 m) depths. All Protector Seamounts sites, Protector Shoal, Quest Caldera, and an unnamed submarine volcano, showed thermal anomalies, as did the East Scotia Ridge segment E5 back arc site. At Quest Caldera, chimney structures, bacterial mats and mineral precipitates were observed in a depression on the caldera rim. The investigated forearc sites showed hydroacoustic, but not temperature anomalies. None of the sites showed evidence of megafauna associated with hydrothermal venting or hydrocarbon seep sites, but did have evidence of both unexpectedly dense and sparse communities of Southern Ocean taxa in the vicinities of the anomalies. Overall, our investigations showed that the benthic habitats and communities of the Sandwich Plate are still barely known. Article in Journal/Newspaper Antarc* Antarctica Southern Ocean Natural Environment Research Council: NERC Open Research Archive Southern Ocean Protector ENVELOPE(-66.217,-66.217,-66.717,-66.717) East Scotia Ridge ENVELOPE(-29.250,-29.250,-57.917,-57.917) South Sandwich Trench ENVELOPE(-25.000,-25.000,-56.500,-56.500) Protector Shoal ENVELOPE(-28.167,-28.167,-55.983,-55.983) Deep Sea Research Part II: Topical Studies in Oceanography 105075 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
description |
The Sandwich Plate is known as one of the tectonically most active regions in the Southern Ocean and Antarctica, characterised by a subsurface chain of active volcanic islands (the South Sandwich Arc), submarine volcanic features, an earthquake rich area along the South Sandwich Trench and hydrothermal vents on segments of the East Scotia Ridge. In 2013 and 2019 we investigated eight potential hydrothermally active sites in the forearc, island arc and back arc of the Sandwich Plate from shallow (60 m) to abyssal (3886 m) depths. All Protector Seamounts sites, Protector Shoal, Quest Caldera, and an unnamed submarine volcano, showed thermal anomalies, as did the East Scotia Ridge segment E5 back arc site. At Quest Caldera, chimney structures, bacterial mats and mineral precipitates were observed in a depression on the caldera rim. The investigated forearc sites showed hydroacoustic, but not temperature anomalies. None of the sites showed evidence of megafauna associated with hydrothermal venting or hydrocarbon seep sites, but did have evidence of both unexpectedly dense and sparse communities of Southern Ocean taxa in the vicinities of the anomalies. Overall, our investigations showed that the benthic habitats and communities of the Sandwich Plate are still barely known. |
format |
Article in Journal/Newspaper |
author |
Linse, Katrin Römer, Miriam Little, Crispin T.S. Marcon, Yann Bohrmann, Gerhard |
spellingShingle |
Linse, Katrin Römer, Miriam Little, Crispin T.S. Marcon, Yann Bohrmann, Gerhard Megabenthos habitats influenced by nearby hydrothermal activity on the Sandwich Plate, Southern Ocean |
author_facet |
Linse, Katrin Römer, Miriam Little, Crispin T.S. Marcon, Yann Bohrmann, Gerhard |
author_sort |
Linse, Katrin |
title |
Megabenthos habitats influenced by nearby hydrothermal activity on the Sandwich Plate, Southern Ocean |
title_short |
Megabenthos habitats influenced by nearby hydrothermal activity on the Sandwich Plate, Southern Ocean |
title_full |
Megabenthos habitats influenced by nearby hydrothermal activity on the Sandwich Plate, Southern Ocean |
title_fullStr |
Megabenthos habitats influenced by nearby hydrothermal activity on the Sandwich Plate, Southern Ocean |
title_full_unstemmed |
Megabenthos habitats influenced by nearby hydrothermal activity on the Sandwich Plate, Southern Ocean |
title_sort |
megabenthos habitats influenced by nearby hydrothermal activity on the sandwich plate, southern ocean |
publisher |
Elsevier |
publishDate |
2022 |
url |
http://nora.nerc.ac.uk/id/eprint/531090/ https://www.sciencedirect.com/science/article/pii/S0967064522000601 |
long_lat |
ENVELOPE(-66.217,-66.217,-66.717,-66.717) ENVELOPE(-29.250,-29.250,-57.917,-57.917) ENVELOPE(-25.000,-25.000,-56.500,-56.500) ENVELOPE(-28.167,-28.167,-55.983,-55.983) |
geographic |
Southern Ocean Protector East Scotia Ridge South Sandwich Trench Protector Shoal |
geographic_facet |
Southern Ocean Protector East Scotia Ridge South Sandwich Trench Protector Shoal |
genre |
Antarc* Antarctica Southern Ocean |
genre_facet |
Antarc* Antarctica Southern Ocean |
op_relation |
Linse, Katrin orcid:0000-0003-3477-3047 Römer, Miriam; Little, Crispin T.S.; Marcon, Yann; Bohrmann, Gerhard. 2022 Megabenthos habitats influenced by nearby hydrothermal activity on the Sandwich Plate, Southern Ocean [in special issue: South Sandwich Islands – an understudied isolated Southern Ocean archipelago] Deep Sea Research Part II: Topical Studies in Oceanography, 198, 105075. 13, pp. https://doi.org/10.1016/j.dsr2.2022.105075 <https://doi.org/10.1016/j.dsr2.2022.105075> |
op_doi |
https://doi.org/10.1016/j.dsr2.2022.105075 |
container_title |
Deep Sea Research Part II: Topical Studies in Oceanography |
container_start_page |
105075 |
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1766157593918570496 |