Bathymetrical distribution and size structure of cold-water coral populations in the Cap de Creus and Lacaze-Duthiers canyons (northwestern Mediterranean)
Submarine canyons are known as one of the seafloor morphological features where living cold-water coral (CWC) communities develop in the Mediterranean Sea. We investigated the CWC community of the two westernmost submarine canyons of the Gulf of Lions canyon system: the Cap de Creus Canyon (CCC) and...
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Main Authors: | , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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Copernicus Publications (EGU)
2013
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Online Access: | https://oceanrep.geomar.de/id/eprint/38415/ https://oceanrep.geomar.de/id/eprint/38415/1/bg-10-2049-2013.pdf https://doi.org/10.5194/bg-10-2049-2013 |
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ftoceanrep:oai:oceanrep.geomar.de:38415 2023-05-15T17:08:45+02:00 Bathymetrical distribution and size structure of cold-water coral populations in the Cap de Creus and Lacaze-Duthiers canyons (northwestern Mediterranean) Gori, A. Orejas, C. Madurell, T. Bramanti, L. Martins, M. Quintanilla, E. Marti-Puig, P. Lo Iacono, C. Puig, P. Requena, S. Greenacre, M. Gili, J. M. 2013 text https://oceanrep.geomar.de/id/eprint/38415/ https://oceanrep.geomar.de/id/eprint/38415/1/bg-10-2049-2013.pdf https://doi.org/10.5194/bg-10-2049-2013 en eng Copernicus Publications (EGU) https://oceanrep.geomar.de/id/eprint/38415/1/bg-10-2049-2013.pdf Gori, A., Orejas, C., Madurell, T., Bramanti, L., Martins, M., Quintanilla, E., Marti-Puig, P., Lo Iacono, C., Puig, P., Requena, S., Greenacre, M. and Gili, J. M. (2013) Bathymetrical distribution and size structure of cold-water coral populations in the Cap de Creus and Lacaze-Duthiers canyons (northwestern Mediterranean). Open Access Biogeosciences (BG), 10 (3). pp. 2049-2060. DOI 10.5194/bg-10-2049-2013 <https://doi.org/10.5194/bg-10-2049-2013>. doi:10.5194/bg-10-2049-2013 cc_by_3.0 info:eu-repo/semantics/openAccess Article PeerReviewed 2013 ftoceanrep https://doi.org/10.5194/bg-10-2049-2013 2023-04-07T15:34:04Z Submarine canyons are known as one of the seafloor morphological features where living cold-water coral (CWC) communities develop in the Mediterranean Sea. We investigated the CWC community of the two westernmost submarine canyons of the Gulf of Lions canyon system: the Cap de Creus Canyon (CCC) and Lacaze-Duthiers Canyon (LDC). Coral associations have been studied through video material recorded by means of a manned submersible and a remotely operated vehicle. Video transects have been conducted and analyzed in order to obtain information on (1) coral bathymetric distribution and density patterns, (2) size structure of coral populations, and (3) coral colony position with respect to the substrate. Madrepora oculata was the most abundant CWC in both canyons, while Lophelia pertusa and Dendrophyllia cornigera mostly occurred as isolated colonies or in small patches. An important exception was detected in a vertical cliff in LDC where a large L. pertusa framework was documented. This is the first record of such an extended L. pertusa framework in the Mediterranean Sea. In both canyons coral populations were dominated by medium and large colonies, but the frequent presence of small-sized colonies also indicate active recruitment. The predominant coral orientation (90° and 135°) is probably driven by the current regime as well as by the sediment load transported by the current flows. In general, no clear differences were observed in the abundance and in the size structure of the CWC populations between CCC and LDC, despite large differences in particulate matter between canyons. Article in Journal/Newspaper Lophelia pertusa OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Duthiers ENVELOPE(-62.818,-62.818,-64.805,-64.805) Lacaze-Duthiers ENVELOPE(-62.817,-62.817,-64.800,-64.800) Biogeosciences 10 3 2049 2060 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Submarine canyons are known as one of the seafloor morphological features where living cold-water coral (CWC) communities develop in the Mediterranean Sea. We investigated the CWC community of the two westernmost submarine canyons of the Gulf of Lions canyon system: the Cap de Creus Canyon (CCC) and Lacaze-Duthiers Canyon (LDC). Coral associations have been studied through video material recorded by means of a manned submersible and a remotely operated vehicle. Video transects have been conducted and analyzed in order to obtain information on (1) coral bathymetric distribution and density patterns, (2) size structure of coral populations, and (3) coral colony position with respect to the substrate. Madrepora oculata was the most abundant CWC in both canyons, while Lophelia pertusa and Dendrophyllia cornigera mostly occurred as isolated colonies or in small patches. An important exception was detected in a vertical cliff in LDC where a large L. pertusa framework was documented. This is the first record of such an extended L. pertusa framework in the Mediterranean Sea. In both canyons coral populations were dominated by medium and large colonies, but the frequent presence of small-sized colonies also indicate active recruitment. The predominant coral orientation (90° and 135°) is probably driven by the current regime as well as by the sediment load transported by the current flows. In general, no clear differences were observed in the abundance and in the size structure of the CWC populations between CCC and LDC, despite large differences in particulate matter between canyons. |
format |
Article in Journal/Newspaper |
author |
Gori, A. Orejas, C. Madurell, T. Bramanti, L. Martins, M. Quintanilla, E. Marti-Puig, P. Lo Iacono, C. Puig, P. Requena, S. Greenacre, M. Gili, J. M. |
spellingShingle |
Gori, A. Orejas, C. Madurell, T. Bramanti, L. Martins, M. Quintanilla, E. Marti-Puig, P. Lo Iacono, C. Puig, P. Requena, S. Greenacre, M. Gili, J. M. Bathymetrical distribution and size structure of cold-water coral populations in the Cap de Creus and Lacaze-Duthiers canyons (northwestern Mediterranean) |
author_facet |
Gori, A. Orejas, C. Madurell, T. Bramanti, L. Martins, M. Quintanilla, E. Marti-Puig, P. Lo Iacono, C. Puig, P. Requena, S. Greenacre, M. Gili, J. M. |
author_sort |
Gori, A. |
title |
Bathymetrical distribution and size structure of cold-water coral populations in the Cap de Creus and Lacaze-Duthiers canyons (northwestern Mediterranean) |
title_short |
Bathymetrical distribution and size structure of cold-water coral populations in the Cap de Creus and Lacaze-Duthiers canyons (northwestern Mediterranean) |
title_full |
Bathymetrical distribution and size structure of cold-water coral populations in the Cap de Creus and Lacaze-Duthiers canyons (northwestern Mediterranean) |
title_fullStr |
Bathymetrical distribution and size structure of cold-water coral populations in the Cap de Creus and Lacaze-Duthiers canyons (northwestern Mediterranean) |
title_full_unstemmed |
Bathymetrical distribution and size structure of cold-water coral populations in the Cap de Creus and Lacaze-Duthiers canyons (northwestern Mediterranean) |
title_sort |
bathymetrical distribution and size structure of cold-water coral populations in the cap de creus and lacaze-duthiers canyons (northwestern mediterranean) |
publisher |
Copernicus Publications (EGU) |
publishDate |
2013 |
url |
https://oceanrep.geomar.de/id/eprint/38415/ https://oceanrep.geomar.de/id/eprint/38415/1/bg-10-2049-2013.pdf https://doi.org/10.5194/bg-10-2049-2013 |
long_lat |
ENVELOPE(-62.818,-62.818,-64.805,-64.805) ENVELOPE(-62.817,-62.817,-64.800,-64.800) |
geographic |
Duthiers Lacaze-Duthiers |
geographic_facet |
Duthiers Lacaze-Duthiers |
genre |
Lophelia pertusa |
genre_facet |
Lophelia pertusa |
op_relation |
https://oceanrep.geomar.de/id/eprint/38415/1/bg-10-2049-2013.pdf Gori, A., Orejas, C., Madurell, T., Bramanti, L., Martins, M., Quintanilla, E., Marti-Puig, P., Lo Iacono, C., Puig, P., Requena, S., Greenacre, M. and Gili, J. M. (2013) Bathymetrical distribution and size structure of cold-water coral populations in the Cap de Creus and Lacaze-Duthiers canyons (northwestern Mediterranean). Open Access Biogeosciences (BG), 10 (3). pp. 2049-2060. DOI 10.5194/bg-10-2049-2013 <https://doi.org/10.5194/bg-10-2049-2013>. doi:10.5194/bg-10-2049-2013 |
op_rights |
cc_by_3.0 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/bg-10-2049-2013 |
container_title |
Biogeosciences |
container_volume |
10 |
container_issue |
3 |
container_start_page |
2049 |
op_container_end_page |
2060 |
_version_ |
1766064608392511488 |