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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European Geosciences Union (EGU)
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ftubarcepubl:oai:diposit.ub.edu:2445/97231 2024-02-11T10:05:42+01:00 Bathymetrical distribution and size structure of cold-water coral populations in the Cap de Creus and Lacaze-Duthiers canyons (northwestern Mediterranean) Gori, Andrea Orejas, Covadonga Madurell, T. Bramanti, Lorenzo Martins, M. Quintanilla, E. Marti-Puig, P. Lo Iacono, Claudio Puig, Pere Requena, S. Greenacre, Michael J. Gili, Josep Maria, 1953- 2013-03-25 12 p. application/pdf http://hdl.handle.net/2445/97231 eng eng European Geosciences Union (EGU) Reproducció del document publicat a: http://dx.doi.org/10.5194/bg-10-2049-2013 Biogeosciences, 2013, vol. 10, p. 2049-2060 Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals) http://dx.doi.org/10.5194/bg-10-2049-2013 info:eu-repo/grantAgreement/EC/FP7/226354/EU//HERMIONE 1726-4170 http://hdl.handle.net/2445/97231 659731 cc-by (c) Gori, Andrea et al., 2013 http://creativecommons.org/licenses/by/3.0/es info:eu-repo/semantics/openAccess Coralls Creus Cap de (Catalunya) Corals Cape (Catalonia) info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2013 ftubarcepubl https://doi.org/10.5194/bg-10-2049-2013 2024-01-24T00:59:29Z 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 Dipòsit Digital de la Universitat de Barcelona 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 |
Dipòsit Digital de la Universitat de Barcelona |
op_collection_id |
ftubarcepubl |
language |
English |
topic |
Coralls Creus Cap de (Catalunya) Corals Cape (Catalonia) |
spellingShingle |
Coralls Creus Cap de (Catalunya) Corals Cape (Catalonia) Gori, Andrea Orejas, Covadonga Madurell, T. Bramanti, Lorenzo Martins, M. Quintanilla, E. Marti-Puig, P. Lo Iacono, Claudio Puig, Pere Requena, S. Greenacre, Michael J. Gili, Josep Maria, 1953- Bathymetrical distribution and size structure of cold-water coral populations in the Cap de Creus and Lacaze-Duthiers canyons (northwestern Mediterranean) |
topic_facet |
Coralls Creus Cap de (Catalunya) Corals Cape (Catalonia) |
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, Andrea Orejas, Covadonga Madurell, T. Bramanti, Lorenzo Martins, M. Quintanilla, E. Marti-Puig, P. Lo Iacono, Claudio Puig, Pere Requena, S. Greenacre, Michael J. Gili, Josep Maria, 1953- |
author_facet |
Gori, Andrea Orejas, Covadonga Madurell, T. Bramanti, Lorenzo Martins, M. Quintanilla, E. Marti-Puig, P. Lo Iacono, Claudio Puig, Pere Requena, S. Greenacre, Michael J. Gili, Josep Maria, 1953- |
author_sort |
Gori, Andrea |
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 |
European Geosciences Union (EGU) |
publishDate |
2013 |
url |
http://hdl.handle.net/2445/97231 |
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 |
Reproducció del document publicat a: http://dx.doi.org/10.5194/bg-10-2049-2013 Biogeosciences, 2013, vol. 10, p. 2049-2060 Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals) http://dx.doi.org/10.5194/bg-10-2049-2013 info:eu-repo/grantAgreement/EC/FP7/226354/EU//HERMIONE 1726-4170 http://hdl.handle.net/2445/97231 659731 |
op_rights |
cc-by (c) Gori, Andrea et al., 2013 http://creativecommons.org/licenses/by/3.0/es 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_ |
1790602835225739264 |