Microdistribution of Faunal Assemblages at Deep-Sea Hydrothermal Vents in the Southern Ocean
Chemosynthetic primary production by microbes supports abundant faunal assemblages at deep-sea hydrothermal vents, with zonation of invertebrate species typically occurring along physico-chemical gradients. Recently discovered vent fields on the East Scotia Ridge (ESR) in the Southern Ocean represen...
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ftsouthampton:oai:eprints.soton.ac.uk:344880 2023-07-30T04:07:01+02:00 Microdistribution of Faunal Assemblages at Deep-Sea Hydrothermal Vents in the Southern Ocean Marsh, Leigh Copley, Jonathan T. Huvenne, Veerle A.I. Linse, Katrin Reid, William D.K. Rogers, Alex D. Sweeting, Christopher J. Tyler, Paul A. 2012-10-29 application/octet-stream https://eprints.soton.ac.uk/344880/ https://eprints.soton.ac.uk/344880/1/fetchObject.action_uri%253Dinfo_doi%25252F10.1371%25252Fjournal.pone.0048348%2526representation%253DPDF en eng https://eprints.soton.ac.uk/344880/1/fetchObject.action_uri%253Dinfo_doi%25252F10.1371%25252Fjournal.pone.0048348%2526representation%253DPDF Marsh, Leigh, Copley, Jonathan T., Huvenne, Veerle A.I., Linse, Katrin, Reid, William D.K., Rogers, Alex D., Sweeting, Christopher J. and Tyler, Paul A. (2012) Microdistribution of Faunal Assemblages at Deep-Sea Hydrothermal Vents in the Southern Ocean. PLoS ONE, 7 (10), e48348. (doi:10.1371/journal.pone.0048348 <http://dx.doi.org/10.1371/journal.pone.0048348>). other Article PeerReviewed 2012 ftsouthampton https://doi.org/10.1371/journal.pone.0048348 2023-07-09T21:42:19Z Chemosynthetic primary production by microbes supports abundant faunal assemblages at deep-sea hydrothermal vents, with zonation of invertebrate species typically occurring along physico-chemical gradients. Recently discovered vent fields on the East Scotia Ridge (ESR) in the Southern Ocean represent a new province of vent biogeography, but the spatial dynamics of their distinct fauna have yet to be elucidated. This study determines patterns of faunal zonation, species associations, and relationships between faunal microdistribution and hydrothermal activity in a vent field at a depth of 2,400 m on the ESR. Remotely operated vehicle (ROV) dives obtained high-definition imagery of three chimney structures with varying levels of hydrothermal activity, and a mosaic image of >250 m2 of seafloor co-registered with temperature measurements. Analysis of faunal microdistribution within the mosaiced seafloor reveals a consistent pattern of faunal zonation with increasing distance from vent sources and peak temperatures. Assemblages closest to vent sources are visibly dominated by a new species of anomuran crab, Kiwa n. sp. (abundance >700 individuals m?2), followed by a peltospiroid gastropod (>1,500 individuals m?2), eolepadid barnacle (>1,500 individuals m?2), and carnivorous actinostolid anemone (>30 individuals m?2). Peripheral fauna are not dominated by a single taxon, but include predatory and scavenger taxa such as stichasterid seastars, pycnogonids and octopus. Variation in faunal microdistribution on chimneys with differing levels of activity suggests a possible successional sequence for vent fauna in this new biogeographic province. An increase in ?34S values of primary consumers with distance from vent sources, and variation in their ?13C values also indicate possible zonation of nutritional modes of the vent fauna. By using ROV videography to obtain a high-resolution representation of a vent environment over a greater extent than previous studies, these results provide a baseline for ... Article in Journal/Newspaper Southern Ocean University of Southampton: e-Prints Soton Southern Ocean East Scotia Ridge ENVELOPE(-29.250,-29.250,-57.917,-57.917) PLoS ONE 7 10 e48348 |
institution |
Open Polar |
collection |
University of Southampton: e-Prints Soton |
op_collection_id |
ftsouthampton |
language |
English |
description |
Chemosynthetic primary production by microbes supports abundant faunal assemblages at deep-sea hydrothermal vents, with zonation of invertebrate species typically occurring along physico-chemical gradients. Recently discovered vent fields on the East Scotia Ridge (ESR) in the Southern Ocean represent a new province of vent biogeography, but the spatial dynamics of their distinct fauna have yet to be elucidated. This study determines patterns of faunal zonation, species associations, and relationships between faunal microdistribution and hydrothermal activity in a vent field at a depth of 2,400 m on the ESR. Remotely operated vehicle (ROV) dives obtained high-definition imagery of three chimney structures with varying levels of hydrothermal activity, and a mosaic image of >250 m2 of seafloor co-registered with temperature measurements. Analysis of faunal microdistribution within the mosaiced seafloor reveals a consistent pattern of faunal zonation with increasing distance from vent sources and peak temperatures. Assemblages closest to vent sources are visibly dominated by a new species of anomuran crab, Kiwa n. sp. (abundance >700 individuals m?2), followed by a peltospiroid gastropod (>1,500 individuals m?2), eolepadid barnacle (>1,500 individuals m?2), and carnivorous actinostolid anemone (>30 individuals m?2). Peripheral fauna are not dominated by a single taxon, but include predatory and scavenger taxa such as stichasterid seastars, pycnogonids and octopus. Variation in faunal microdistribution on chimneys with differing levels of activity suggests a possible successional sequence for vent fauna in this new biogeographic province. An increase in ?34S values of primary consumers with distance from vent sources, and variation in their ?13C values also indicate possible zonation of nutritional modes of the vent fauna. By using ROV videography to obtain a high-resolution representation of a vent environment over a greater extent than previous studies, these results provide a baseline for ... |
format |
Article in Journal/Newspaper |
author |
Marsh, Leigh Copley, Jonathan T. Huvenne, Veerle A.I. Linse, Katrin Reid, William D.K. Rogers, Alex D. Sweeting, Christopher J. Tyler, Paul A. |
spellingShingle |
Marsh, Leigh Copley, Jonathan T. Huvenne, Veerle A.I. Linse, Katrin Reid, William D.K. Rogers, Alex D. Sweeting, Christopher J. Tyler, Paul A. Microdistribution of Faunal Assemblages at Deep-Sea Hydrothermal Vents in the Southern Ocean |
author_facet |
Marsh, Leigh Copley, Jonathan T. Huvenne, Veerle A.I. Linse, Katrin Reid, William D.K. Rogers, Alex D. Sweeting, Christopher J. Tyler, Paul A. |
author_sort |
Marsh, Leigh |
title |
Microdistribution of Faunal Assemblages at Deep-Sea Hydrothermal Vents in the Southern Ocean |
title_short |
Microdistribution of Faunal Assemblages at Deep-Sea Hydrothermal Vents in the Southern Ocean |
title_full |
Microdistribution of Faunal Assemblages at Deep-Sea Hydrothermal Vents in the Southern Ocean |
title_fullStr |
Microdistribution of Faunal Assemblages at Deep-Sea Hydrothermal Vents in the Southern Ocean |
title_full_unstemmed |
Microdistribution of Faunal Assemblages at Deep-Sea Hydrothermal Vents in the Southern Ocean |
title_sort |
microdistribution of faunal assemblages at deep-sea hydrothermal vents in the southern ocean |
publishDate |
2012 |
url |
https://eprints.soton.ac.uk/344880/ https://eprints.soton.ac.uk/344880/1/fetchObject.action_uri%253Dinfo_doi%25252F10.1371%25252Fjournal.pone.0048348%2526representation%253DPDF |
long_lat |
ENVELOPE(-29.250,-29.250,-57.917,-57.917) |
geographic |
Southern Ocean East Scotia Ridge |
geographic_facet |
Southern Ocean East Scotia Ridge |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
https://eprints.soton.ac.uk/344880/1/fetchObject.action_uri%253Dinfo_doi%25252F10.1371%25252Fjournal.pone.0048348%2526representation%253DPDF Marsh, Leigh, Copley, Jonathan T., Huvenne, Veerle A.I., Linse, Katrin, Reid, William D.K., Rogers, Alex D., Sweeting, Christopher J. and Tyler, Paul A. (2012) Microdistribution of Faunal Assemblages at Deep-Sea Hydrothermal Vents in the Southern Ocean. PLoS ONE, 7 (10), e48348. (doi:10.1371/journal.pone.0048348 <http://dx.doi.org/10.1371/journal.pone.0048348>). |
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other |
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https://doi.org/10.1371/journal.pone.0048348 |
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PLoS ONE |
container_volume |
7 |
container_issue |
10 |
container_start_page |
e48348 |
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1772820092417998848 |