Environmental variability and biodiversity of megabenthos on the Hebrides Terrace Seamount (Northeast Atlantic)
We present the first remotely operated vehicle investigation of megabenthic communities (1004-1695 m water depth) on the Hebrides Terrace Seamount (Northeast Atlantic). Conductivity-temperature-depth casts showed rapid light attenuation below the summit and an oceanographic regime on the flanks cons...
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2014
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ftplymouthml:oai:plymsea.ac.uk:6214 2023-05-15T17:41:10+02:00 Environmental variability and biodiversity of megabenthos on the Hebrides Terrace Seamount (Northeast Atlantic) Henry, L-A Vad, J Findlay, HS Murillo, J Milligan, R Roberts, JM 2014-07-07 text http://plymsea.ac.uk/id/eprint/6214/ http://plymsea.ac.uk/id/eprint/6214/1/Henry%20et%20al%20Scientific%20Reports%202014.pdf https://doi.org/10.1038/srep05589 en eng http://plymsea.ac.uk/id/eprint/6214/1/Henry%20et%20al%20Scientific%20Reports%202014.pdf Henry, L-A; Vad, J; Findlay, HS; Murillo, J; Milligan, R; Roberts, JM. 2014 Environmental variability and biodiversity of megabenthos on the Hebrides Terrace Seamount (Northeast Atlantic). Scientific Reports, 4. https://doi.org/10.1038/srep05589 <https://doi.org/10.1038/srep05589> cc_by_nc_nd_4 CC-BY-NC-ND Publication - Article PeerReviewed 2014 ftplymouthml https://doi.org/10.1038/srep05589 2022-09-13T05:48:35Z We present the first remotely operated vehicle investigation of megabenthic communities (1004-1695 m water depth) on the Hebrides Terrace Seamount (Northeast Atlantic). Conductivity-temperature-depth casts showed rapid light attenuation below the summit and an oceanographic regime on the flanks consistent with an internal tide, and high short-term variability in water temperature, salinity, light attenuation, aragonite and oxygen down to 1500 m deep. Minor changes in species composition (3-14%) were explained by changes in depth, substratum and oceanographic stability, whereas environmental variability explained substantially more variation in species richness (40-56%). Two peaks in species richness occurred, the first at 1300-1400 m where cooler Wyville Thomson Overflow Water (WTOW) mixes with subtropical gyre waters and the second at 1500-1600 m where WTOW mixes with subpolar mode waters. Our results suggest that internal tides, substrate heterogeneity and oceanographic interfaces may enhance biological diversity on this and adjacent seamounts in the Rockall Trough. Article in Journal/Newspaper Northeast Atlantic Plymouth Marine Science Electronic Archive (PlyMSEA - Plymouth Marine Laboratory, PML) Hebrides Terrace Seamount ENVELOPE(-10.417,-10.417,56.417,56.417) Rockall Trough ENVELOPE(-15.036,-15.036,53.825,53.825) Scientific Reports 4 1 |
institution |
Open Polar |
collection |
Plymouth Marine Science Electronic Archive (PlyMSEA - Plymouth Marine Laboratory, PML) |
op_collection_id |
ftplymouthml |
language |
English |
description |
We present the first remotely operated vehicle investigation of megabenthic communities (1004-1695 m water depth) on the Hebrides Terrace Seamount (Northeast Atlantic). Conductivity-temperature-depth casts showed rapid light attenuation below the summit and an oceanographic regime on the flanks consistent with an internal tide, and high short-term variability in water temperature, salinity, light attenuation, aragonite and oxygen down to 1500 m deep. Minor changes in species composition (3-14%) were explained by changes in depth, substratum and oceanographic stability, whereas environmental variability explained substantially more variation in species richness (40-56%). Two peaks in species richness occurred, the first at 1300-1400 m where cooler Wyville Thomson Overflow Water (WTOW) mixes with subtropical gyre waters and the second at 1500-1600 m where WTOW mixes with subpolar mode waters. Our results suggest that internal tides, substrate heterogeneity and oceanographic interfaces may enhance biological diversity on this and adjacent seamounts in the Rockall Trough. |
format |
Article in Journal/Newspaper |
author |
Henry, L-A Vad, J Findlay, HS Murillo, J Milligan, R Roberts, JM |
spellingShingle |
Henry, L-A Vad, J Findlay, HS Murillo, J Milligan, R Roberts, JM Environmental variability and biodiversity of megabenthos on the Hebrides Terrace Seamount (Northeast Atlantic) |
author_facet |
Henry, L-A Vad, J Findlay, HS Murillo, J Milligan, R Roberts, JM |
author_sort |
Henry, L-A |
title |
Environmental variability and biodiversity of megabenthos on the Hebrides Terrace Seamount (Northeast Atlantic) |
title_short |
Environmental variability and biodiversity of megabenthos on the Hebrides Terrace Seamount (Northeast Atlantic) |
title_full |
Environmental variability and biodiversity of megabenthos on the Hebrides Terrace Seamount (Northeast Atlantic) |
title_fullStr |
Environmental variability and biodiversity of megabenthos on the Hebrides Terrace Seamount (Northeast Atlantic) |
title_full_unstemmed |
Environmental variability and biodiversity of megabenthos on the Hebrides Terrace Seamount (Northeast Atlantic) |
title_sort |
environmental variability and biodiversity of megabenthos on the hebrides terrace seamount (northeast atlantic) |
publishDate |
2014 |
url |
http://plymsea.ac.uk/id/eprint/6214/ http://plymsea.ac.uk/id/eprint/6214/1/Henry%20et%20al%20Scientific%20Reports%202014.pdf https://doi.org/10.1038/srep05589 |
long_lat |
ENVELOPE(-10.417,-10.417,56.417,56.417) ENVELOPE(-15.036,-15.036,53.825,53.825) |
geographic |
Hebrides Terrace Seamount Rockall Trough |
geographic_facet |
Hebrides Terrace Seamount Rockall Trough |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_relation |
http://plymsea.ac.uk/id/eprint/6214/1/Henry%20et%20al%20Scientific%20Reports%202014.pdf Henry, L-A; Vad, J; Findlay, HS; Murillo, J; Milligan, R; Roberts, JM. 2014 Environmental variability and biodiversity of megabenthos on the Hebrides Terrace Seamount (Northeast Atlantic). Scientific Reports, 4. https://doi.org/10.1038/srep05589 <https://doi.org/10.1038/srep05589> |
op_rights |
cc_by_nc_nd_4 |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1038/srep05589 |
container_title |
Scientific Reports |
container_volume |
4 |
container_issue |
1 |
_version_ |
1766142522106576896 |