Distribution, abundance and size of Lophelia pertusa coral reefs in mid-Norway in relation to seabed characteristics
This paper presents results on the distribution, abundance, and size of Lophelia pertusa coral reefs in mid-Norway (62°30&;–65°30&;N) as compiled from own investigations, earlier scientific reports, reports from fishery surveys and fishermen. Detailed bathymetrical mapping covering an area o...
Published in: | Journal of the Marine Biological Association of the United Kingdom |
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Cambridge University Press (CUP)
2001
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Online Access: | http://dx.doi.org/10.1017/s002531540100426x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S002531540100426X |
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crcambridgeupr:10.1017/s002531540100426x 2024-09-15T18:18:01+00:00 Distribution, abundance and size of Lophelia pertusa coral reefs in mid-Norway in relation to seabed characteristics Mortensen, Pål B. Hovland, T. Fosså, Jan Helge Furevik, Dag M. 2001 http://dx.doi.org/10.1017/s002531540100426x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S002531540100426X en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Journal of the Marine Biological Association of the United Kingdom volume 81, issue 4, page 581-597 ISSN 0025-3154 1469-7769 journal-article 2001 crcambridgeupr https://doi.org/10.1017/s002531540100426x 2024-09-04T04:04:17Z This paper presents results on the distribution, abundance, and size of Lophelia pertusa coral reefs in mid-Norway (62°30&;–65°30&;N) as compiled from own investigations, earlier scientific reports, reports from fishery surveys and fishermen. Detailed bathymetrical mapping covering an area of ∼600 km 2 along the Halten gas-pipeline, and two nearby areas across the shelf revealed 70 Lophelia reefs. In general, the reefs occurred close to breaks and escarpments. High densities of up to nine reefs per km 2 were found in areas with a rugged seabed topography and with a slope >0·6°. These seabed features have probably positive influence on the transport and concentration of food particles and thus control the local distribution of Lophelia . The area covered by individual reefs varied between 1230 m 2 and 37,310 m 2 with a mean of 5628 m 2 . The height of the reefs was positively correlated with the area. Reefs <10,000 m 2 had a circular outline, while larger reefs were elongate, aligned parallel to the depth contours. Along the pipeline the average density of Lophelia reefs was 0·09 km −2 which indicates that the total number of reefs is ∼6300, covering ∼35 km 2 within the whole study area. Article in Journal/Newspaper Lophelia pertusa Cambridge University Press Journal of the Marine Biological Association of the United Kingdom 81 4 581 597 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
This paper presents results on the distribution, abundance, and size of Lophelia pertusa coral reefs in mid-Norway (62°30&;–65°30&;N) as compiled from own investigations, earlier scientific reports, reports from fishery surveys and fishermen. Detailed bathymetrical mapping covering an area of ∼600 km 2 along the Halten gas-pipeline, and two nearby areas across the shelf revealed 70 Lophelia reefs. In general, the reefs occurred close to breaks and escarpments. High densities of up to nine reefs per km 2 were found in areas with a rugged seabed topography and with a slope >0·6°. These seabed features have probably positive influence on the transport and concentration of food particles and thus control the local distribution of Lophelia . The area covered by individual reefs varied between 1230 m 2 and 37,310 m 2 with a mean of 5628 m 2 . The height of the reefs was positively correlated with the area. Reefs <10,000 m 2 had a circular outline, while larger reefs were elongate, aligned parallel to the depth contours. Along the pipeline the average density of Lophelia reefs was 0·09 km −2 which indicates that the total number of reefs is ∼6300, covering ∼35 km 2 within the whole study area. |
format |
Article in Journal/Newspaper |
author |
Mortensen, Pål B. Hovland, T. Fosså, Jan Helge Furevik, Dag M. |
spellingShingle |
Mortensen, Pål B. Hovland, T. Fosså, Jan Helge Furevik, Dag M. Distribution, abundance and size of Lophelia pertusa coral reefs in mid-Norway in relation to seabed characteristics |
author_facet |
Mortensen, Pål B. Hovland, T. Fosså, Jan Helge Furevik, Dag M. |
author_sort |
Mortensen, Pål B. |
title |
Distribution, abundance and size of Lophelia pertusa coral reefs in mid-Norway in relation to seabed characteristics |
title_short |
Distribution, abundance and size of Lophelia pertusa coral reefs in mid-Norway in relation to seabed characteristics |
title_full |
Distribution, abundance and size of Lophelia pertusa coral reefs in mid-Norway in relation to seabed characteristics |
title_fullStr |
Distribution, abundance and size of Lophelia pertusa coral reefs in mid-Norway in relation to seabed characteristics |
title_full_unstemmed |
Distribution, abundance and size of Lophelia pertusa coral reefs in mid-Norway in relation to seabed characteristics |
title_sort |
distribution, abundance and size of lophelia pertusa coral reefs in mid-norway in relation to seabed characteristics |
publisher |
Cambridge University Press (CUP) |
publishDate |
2001 |
url |
http://dx.doi.org/10.1017/s002531540100426x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S002531540100426X |
genre |
Lophelia pertusa |
genre_facet |
Lophelia pertusa |
op_source |
Journal of the Marine Biological Association of the United Kingdom volume 81, issue 4, page 581-597 ISSN 0025-3154 1469-7769 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s002531540100426x |
container_title |
Journal of the Marine Biological Association of the United Kingdom |
container_volume |
81 |
container_issue |
4 |
container_start_page |
581 |
op_container_end_page |
597 |
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1810456146353324032 |