Cold-water coral reef frameworks, megafaunal communities and evidence for coral carbonate mounds on the Hatton Bank, north east Atlantic
Offshore banks and seamounts sustain diverse megafaunal communities, including framework reefs formed by cold-water corals. Few studies have quantified environmental effects on the alpha or beta diversity of these communities. We adopted an interdisciplinary approach that used historical geophysical...
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ftnerc:oai:nora.nerc.ac.uk:4437 2024-06-09T07:48:25+00:00 Cold-water coral reef frameworks, megafaunal communities and evidence for coral carbonate mounds on the Hatton Bank, north east Atlantic Roberts, J.M. Henry, L.-A. Long, David Hartley, J.P. 2008 text http://nora.nerc.ac.uk/id/eprint/4437/ https://nora.nerc.ac.uk/id/eprint/4437/1/Roberts_et_al_text_post_referee_final.pdf http://www.springerlink.com/content/0172-9179 en eng Springer https://nora.nerc.ac.uk/id/eprint/4437/1/Roberts_et_al_text_post_referee_final.pdf Roberts, J.M.; Henry, L.-A.; Long, David; Hartley, J.P. 2008 Cold-water coral reef frameworks, megafaunal communities and evidence for coral carbonate mounds on the Hatton Bank, north east Atlantic. Facies, 54 (3). 297-316. https://doi.org/10.1007/s10347-008-0140-x <https://doi.org/10.1007/s10347-008-0140-x> Earth Sciences Publication - Article PeerReviewed 2008 ftnerc https://doi.org/10.1007/s10347-008-0140-x 2024-05-15T08:46:53Z Offshore banks and seamounts sustain diverse megafaunal communities, including framework reefs formed by cold-water corals. Few studies have quantified environmental effects on the alpha or beta diversity of these communities. We adopted an interdisciplinary approach that used historical geophysical data to identify topographic highs on Hatton Bank, which were surveyed visually. The resulting photographic data were used to examine relationships between megafaunal communities and macrohabitat, the latter defined into six categories (mud, sand, cobbles, coral rubble, coral framework, rock). The survey stations revealed considerable small-scale variability in macrohabitat from exposed Late Palaeocene lava flows to quiescent muddy habitats and coral-built carbonate mounds. The first reported evidence for coral carbonate mound development in UK waters is presented, which was most pronounced near present-day or former sites of topographic change, suggesting that local current acceleration favoured coral framework growth and mound initiation. Alpha diversity varied significantly across macrohabitats, but not between rock and coral rubble, or between smaller grain sized categories of cobbles, sand and mud. Community composition differed between most macrohabitats, and variation in beta diversity across Hatton Bank was largely explained by fine-scale substratum. Certain megafauna were clearly associated with particular macrohabitats, with stylasterid corals notably associated with cobble and rock habitats and coral habitats characterized by a diverse community of suspension-feeders. The visual surveys also produced novel images of deep-water megafauna including a new photographic record of the gorgonian coral Paragorgia arborea, a species not previously reported from Rockall Plateau. Further interdisciplinary studies are needed to interpret beta diversity across these and other environmental gradients on Hatton Bank. It is clear that efforts are also needed to improve our understanding of the genetic connectivity and ... Article in Journal/Newspaper North East Atlantic Paragorgia arborea Natural Environment Research Council: NERC Open Research Archive Hatton Bank ENVELOPE(-18.000,-18.000,58.583,58.583) Rockall Plateau ENVELOPE(-18.833,-18.833,56.333,56.333) Facies 54 3 297 316 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
topic |
Earth Sciences |
spellingShingle |
Earth Sciences Roberts, J.M. Henry, L.-A. Long, David Hartley, J.P. Cold-water coral reef frameworks, megafaunal communities and evidence for coral carbonate mounds on the Hatton Bank, north east Atlantic |
topic_facet |
Earth Sciences |
description |
Offshore banks and seamounts sustain diverse megafaunal communities, including framework reefs formed by cold-water corals. Few studies have quantified environmental effects on the alpha or beta diversity of these communities. We adopted an interdisciplinary approach that used historical geophysical data to identify topographic highs on Hatton Bank, which were surveyed visually. The resulting photographic data were used to examine relationships between megafaunal communities and macrohabitat, the latter defined into six categories (mud, sand, cobbles, coral rubble, coral framework, rock). The survey stations revealed considerable small-scale variability in macrohabitat from exposed Late Palaeocene lava flows to quiescent muddy habitats and coral-built carbonate mounds. The first reported evidence for coral carbonate mound development in UK waters is presented, which was most pronounced near present-day or former sites of topographic change, suggesting that local current acceleration favoured coral framework growth and mound initiation. Alpha diversity varied significantly across macrohabitats, but not between rock and coral rubble, or between smaller grain sized categories of cobbles, sand and mud. Community composition differed between most macrohabitats, and variation in beta diversity across Hatton Bank was largely explained by fine-scale substratum. Certain megafauna were clearly associated with particular macrohabitats, with stylasterid corals notably associated with cobble and rock habitats and coral habitats characterized by a diverse community of suspension-feeders. The visual surveys also produced novel images of deep-water megafauna including a new photographic record of the gorgonian coral Paragorgia arborea, a species not previously reported from Rockall Plateau. Further interdisciplinary studies are needed to interpret beta diversity across these and other environmental gradients on Hatton Bank. It is clear that efforts are also needed to improve our understanding of the genetic connectivity and ... |
format |
Article in Journal/Newspaper |
author |
Roberts, J.M. Henry, L.-A. Long, David Hartley, J.P. |
author_facet |
Roberts, J.M. Henry, L.-A. Long, David Hartley, J.P. |
author_sort |
Roberts, J.M. |
title |
Cold-water coral reef frameworks, megafaunal communities and evidence for coral carbonate mounds on the Hatton Bank, north east Atlantic |
title_short |
Cold-water coral reef frameworks, megafaunal communities and evidence for coral carbonate mounds on the Hatton Bank, north east Atlantic |
title_full |
Cold-water coral reef frameworks, megafaunal communities and evidence for coral carbonate mounds on the Hatton Bank, north east Atlantic |
title_fullStr |
Cold-water coral reef frameworks, megafaunal communities and evidence for coral carbonate mounds on the Hatton Bank, north east Atlantic |
title_full_unstemmed |
Cold-water coral reef frameworks, megafaunal communities and evidence for coral carbonate mounds on the Hatton Bank, north east Atlantic |
title_sort |
cold-water coral reef frameworks, megafaunal communities and evidence for coral carbonate mounds on the hatton bank, north east atlantic |
publisher |
Springer |
publishDate |
2008 |
url |
http://nora.nerc.ac.uk/id/eprint/4437/ https://nora.nerc.ac.uk/id/eprint/4437/1/Roberts_et_al_text_post_referee_final.pdf http://www.springerlink.com/content/0172-9179 |
long_lat |
ENVELOPE(-18.000,-18.000,58.583,58.583) ENVELOPE(-18.833,-18.833,56.333,56.333) |
geographic |
Hatton Bank Rockall Plateau |
geographic_facet |
Hatton Bank Rockall Plateau |
genre |
North East Atlantic Paragorgia arborea |
genre_facet |
North East Atlantic Paragorgia arborea |
op_relation |
https://nora.nerc.ac.uk/id/eprint/4437/1/Roberts_et_al_text_post_referee_final.pdf Roberts, J.M.; Henry, L.-A.; Long, David; Hartley, J.P. 2008 Cold-water coral reef frameworks, megafaunal communities and evidence for coral carbonate mounds on the Hatton Bank, north east Atlantic. Facies, 54 (3). 297-316. https://doi.org/10.1007/s10347-008-0140-x <https://doi.org/10.1007/s10347-008-0140-x> |
op_doi |
https://doi.org/10.1007/s10347-008-0140-x |
container_title |
Facies |
container_volume |
54 |
container_issue |
3 |
container_start_page |
297 |
op_container_end_page |
316 |
_version_ |
1801380133678874624 |