Effects of bottom trawling on the Ebro continental shelf sedimentary system (NW Mediterranean)

Effects of bottom trawling on the Ebro continental shelf sedimentary system (NW Mediterranean)

16 pages, 14 figures, 1 table

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Bibliographic Details
Main Authors: Palanques, Albert, Puig, Pere, Guillén, Jorge, Demestre, Montserrat, Martín, Jacobo
Format: artículo biblioteca
Language:English
Published: Pergamon Press 2014-01-01
Subjects:Turbidity, Mediterranean Sea, Anthropogenic impacts, Mud disturbance, Sediment resuspension, Trawling,
Online Access:http://hdl.handle.net/10261/90261
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spelling dig-icm-es-10261-902612020-12-09T17:46:02Z Effects of bottom trawling on the Ebro continental shelf sedimentary system (NW Mediterranean) Palanques, Albert Puig, Pere Guillén, Jorge Demestre, Montserrat Martín, Jacobo Turbidity Mediterranean Sea Anthropogenic impacts Mud disturbance Sediment resuspension Trawling 16 pages, 14 figures, 1 table A monitoring effort to address the physical effects of bottom trawling was conducted on the Ebro prodeltaic mud belt during the RESPONSE project. The monitoring was carried out for 14 months covering periods of different trawling intensities and a close season for the trawling fleet. The seabed morphology was studied by side-scan sonar and sediment texture and organic carbon content were analysed. Suspended sediment vertical distribution was recorded by CTD+turbidity hydrographic profiles and sediment transport was computed using time series from moored turbidimeters and current meters. The results show that the seabed of the fishing ground is strongly affected by scraping and ploughing induced by bottom trawling. Part of the finer fraction of the prodeltaic mud resuspended by trawling is winnowed, increasing the silt content of the settling sediment and also near-bottom turbidity. Sediment resuspended by trawling is incorporated in the bottom nepheloid layer and transported across- and along-shelf, increasing sediment fluxes. Trawling also induces an increase in the organic carbon content in the bottom sediment. All these effects induced by trawling have occurred during the last few decades, changing natural conditions in the fishing ground. © 2013 Elsevier Ltd. Data used in this work was collected in the framework of the EU Research Project RESPONSE (Q5RS-2002-00787) and the Research Project COSTEM (CTM2009-07806) funded by the Ministerio de Ciencia e Innovación. [...] A.P., P.P.J.G. and J.M.belong to CRG on Littoral and Oceanic Processes, supported by Grant 2009 SGR 899 of the Generalitat de Catalunya. J. Martín is funded through a JAE-DOC contract within the program “Junta para la Ampliaciónd e Estudios”, granted by the Consejo Superior de Investigaciones Científicas (Spanish National Research Council) and co-financed by the European Social Fund Peer Reviewed 2014-01-31T12:06:14Z 2014-01-31T12:06:14Z 2014-01-01 2014-01-31T12:06:14Z artículo http://purl.org/coar/resource_type/c_6501 doi: 10.1016/j.csr.2013.10.008 issn: 0278-4343 e-issn: 1873-6955 Continental Shelf Research 72: 83-98 (2014) http://hdl.handle.net/10261/90261 10.1016/j.csr.2013.10.008 en https://doi.org/10.1016/j.csr.2013.10.008 none Pergamon Press
institution ICM ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-icm-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del ICM España
language English
topic Turbidity
Mediterranean Sea
Anthropogenic impacts
Mud disturbance
Sediment resuspension
Trawling
Turbidity
Mediterranean Sea
Anthropogenic impacts
Mud disturbance
Sediment resuspension
Trawling
spellingShingle Turbidity
Mediterranean Sea
Anthropogenic impacts
Mud disturbance
Sediment resuspension
Trawling
Turbidity
Mediterranean Sea
Anthropogenic impacts
Mud disturbance
Sediment resuspension
Trawling
Palanques, Albert
Puig, Pere
Guillén, Jorge
Demestre, Montserrat
Martín, Jacobo
Effects of bottom trawling on the Ebro continental shelf sedimentary system (NW Mediterranean)
description 16 pages, 14 figures, 1 table
format artículo
topic_facet Turbidity
Mediterranean Sea
Anthropogenic impacts
Mud disturbance
Sediment resuspension
Trawling
author Palanques, Albert
Puig, Pere
Guillén, Jorge
Demestre, Montserrat
Martín, Jacobo
author_facet Palanques, Albert
Puig, Pere
Guillén, Jorge
Demestre, Montserrat
Martín, Jacobo
author_sort Palanques, Albert
title Effects of bottom trawling on the Ebro continental shelf sedimentary system (NW Mediterranean)
title_short Effects of bottom trawling on the Ebro continental shelf sedimentary system (NW Mediterranean)
title_full Effects of bottom trawling on the Ebro continental shelf sedimentary system (NW Mediterranean)
title_fullStr Effects of bottom trawling on the Ebro continental shelf sedimentary system (NW Mediterranean)
title_full_unstemmed Effects of bottom trawling on the Ebro continental shelf sedimentary system (NW Mediterranean)
title_sort effects of bottom trawling on the ebro continental shelf sedimentary system (nw mediterranean)
publisher Pergamon Press
publishDate 2014-01-01
url http://hdl.handle.net/10261/90261
work_keys_str_mv AT palanquesalbert effectsofbottomtrawlingontheebrocontinentalshelfsedimentarysystemnwmediterranean
AT puigpere effectsofbottomtrawlingontheebrocontinentalshelfsedimentarysystemnwmediterranean
AT guillenjorge effectsofbottomtrawlingontheebrocontinentalshelfsedimentarysystemnwmediterranean
AT demestremontserrat effectsofbottomtrawlingontheebrocontinentalshelfsedimentarysystemnwmediterranean
AT martinjacobo effectsofbottomtrawlingontheebrocontinentalshelfsedimentarysystemnwmediterranean
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