Effect of commercial trawling on the deep sedimentation in a Mediterranean submarine canyon
6 pages, 5 figures
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| Format: | artículo biblioteca |
| Language: | English |
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Elsevier
2008-07-07
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| Subjects: | Continental margins, Submarine canyons, Submarine canyon, Sediment accumulation rates, Trawling, Northwestern Mediterranean, Palamós Canyon, |
| Online Access: | http://hdl.handle.net/10261/25498 |
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dig-icm-es-10261-254982020-11-19T07:40:38Z Effect of commercial trawling on the deep sedimentation in a Mediterranean submarine canyon Martín, Jacobo Puig, Pere Palanques, Albert Masqué, Pere García-Orellana, Jordi Continental margins Submarine canyons Submarine canyon Sediment accumulation rates Trawling Northwestern Mediterranean Palamós Canyon 6 pages, 5 figures In order to study sediment accumulation rates in the Palamós submarine canyon (Northwestern Mediterranean) during the last century, three sediment cores were extracted from the canyon axis at depths of 450, 1200 and 1750 m respectively, where instrumented moorings were previously located. Estimated sedimentation rates based on 210Pb and 137Cs profiles suggest that the contemporary trends of sediment transfer and accumulation in the canyon may be different from secular trends. During the seventies, a two-fold increase of the sediment accumulation rate took place at the 1750 m depth site. This change has been associated to trawling activities and is attributed to the rapid technical development that the local trawling fleet underwent during the seventies. The surroundings and rims of submarine canyons are frequently targeted by commercial trawling fisheries, an activity that may enhance the input of resuspended particles into canyons, and eventually trigger sediment gravity flows. Our results suggest that the effects of trawling over the dynamics of the seafloor may extend further and deeper from the fishing grounds, eventually extending to bathyal depths. Hence the anthropogenic influence on the sedimentary budget of some deep submarine environments may be more important than previously thought This study was conducted within the CANYONS project, funded by “Dirección General de Enseñanza Superior e Investigación Científica” (MAR99-1060-CO3-01, 02 and 03). J. Martín was funded by the Spanish Ministry of Education and Science (MEC) through a FPI scholarship and later by the HERMES Project (Contract no.: 511234-2, EU Sixth Framework Programme: Global Change and Ecosystems). 210Pb analysis of sediment samples was conducted at the School of Oceanography (University of Washington) by kind invitation of C.A. Nittrouer. C. Bas, J.B. Company and F. Maynou from ICM-CSIC provided important clues in the quest for fisheries data Peer reviewed 2010-06-22T10:25:52Z 2010-06-22T10:25:52Z 2008-07-07 artículo http://purl.org/coar/resource_type/c_6501 Marine Geology 252(3-4): 150-155 (2008) 0025-3227 http://hdl.handle.net/10261/25498 10.1016/j.margeo.2008.03.012 en https://doi.org/10.1016/j.margeo.2008.03.012 open 5867 bytes application/pdf Elsevier |
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biblioteca |
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Biblioteca del ICM España |
| language |
English |
| topic |
Continental margins Submarine canyons Submarine canyon Sediment accumulation rates Trawling Northwestern Mediterranean Palamós Canyon Continental margins Submarine canyons Submarine canyon Sediment accumulation rates Trawling Northwestern Mediterranean Palamós Canyon |
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Continental margins Submarine canyons Submarine canyon Sediment accumulation rates Trawling Northwestern Mediterranean Palamós Canyon Continental margins Submarine canyons Submarine canyon Sediment accumulation rates Trawling Northwestern Mediterranean Palamós Canyon Martín, Jacobo Puig, Pere Palanques, Albert Masqué, Pere García-Orellana, Jordi Effect of commercial trawling on the deep sedimentation in a Mediterranean submarine canyon |
| description |
6 pages, 5 figures |
| format |
artículo |
| topic_facet |
Continental margins Submarine canyons Submarine canyon Sediment accumulation rates Trawling Northwestern Mediterranean Palamós Canyon |
| author |
Martín, Jacobo Puig, Pere Palanques, Albert Masqué, Pere García-Orellana, Jordi |
| author_facet |
Martín, Jacobo Puig, Pere Palanques, Albert Masqué, Pere García-Orellana, Jordi |
| author_sort |
Martín, Jacobo |
| title |
Effect of commercial trawling on the deep sedimentation in a Mediterranean submarine canyon |
| title_short |
Effect of commercial trawling on the deep sedimentation in a Mediterranean submarine canyon |
| title_full |
Effect of commercial trawling on the deep sedimentation in a Mediterranean submarine canyon |
| title_fullStr |
Effect of commercial trawling on the deep sedimentation in a Mediterranean submarine canyon |
| title_full_unstemmed |
Effect of commercial trawling on the deep sedimentation in a Mediterranean submarine canyon |
| title_sort |
effect of commercial trawling on the deep sedimentation in a mediterranean submarine canyon |
| publisher |
Elsevier |
| publishDate |
2008-07-07 |
| url |
http://hdl.handle.net/10261/25498 |
| work_keys_str_mv |
AT martinjacobo effectofcommercialtrawlingonthedeepsedimentationinamediterraneansubmarinecanyon AT puigpere effectofcommercialtrawlingonthedeepsedimentationinamediterraneansubmarinecanyon AT palanquesalbert effectofcommercialtrawlingonthedeepsedimentationinamediterraneansubmarinecanyon AT masquepere effectofcommercialtrawlingonthedeepsedimentationinamediterraneansubmarinecanyon AT garciaorellanajordi effectofcommercialtrawlingonthedeepsedimentationinamediterraneansubmarinecanyon |
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1777665738330341376 |