Bottom-trawling along submarine canyons impacts deep sedimentary regimes

Autores
Paradis, Sarah; Puig, Pere; Masqué, Pere; Juan Diáz, Xènia; Martín de Nascimento, Jacobo; Palanques, Albert
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Many studies highlight that fish trawling activities cause seafloor erosion, but the assessment of the remobilization of surface sediments and its relocation is still not well documented. These impacts were examined along the flanks and axes of three headless submarine canyons incised on the Barcelona continental margin, where trawling fleets have been operating for decades. Trawled grounds along canyon flanks presented eroded and highly reworked surface sediments resulting from the passage of heavy trawling gear. Sedimentation rates on the upper canyon axes tripled and quadrupled its natural (i.e. pre-industrialization) values after a substantial increase in total horsepower of the operating trawling fleets between 1960s and 1970s. These impacts affected the upper canyon reaches next to fishing grounds, where sediment resuspended by trawling can be transported towards the canyon axes. This study highlights that bottom trawling has the capacity to alter natural sedimentary environments by promoting sediment-starved canyon flanks, and by enhancing sedimentation rates along the contiguous axes, independently of canyons´ morphology. Considering the global mechanisation and offshore expansion of bottom trawling fisheries since the mid-20th century, these sedimentary alterations may occur in many trawled canyons worldwide, with further ecological impacts on the trophic status of these non-resilient benthic communities.
Fil: Paradis, Sarah. Universitat Autònoma de Barcelona; España
Fil: Puig, Pere. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias del Mar; España
Fil: Masqué, Pere. University of Western Australia; Australia. Universitat Autònoma de Barcelona; España. Edith Cowan University; Australia
Fil: Juan Diáz, Xènia. Universitat Autònoma de Barcelona; España
Fil: Martín de Nascimento, Jacobo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Palanques, Albert. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias del Mar; España
Materia
Continental Margins
Submarine Canyons
Trawling
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/63374
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Bottom-trawling along submarine canyons impacts deep sedimentary regimesParadis, SarahPuig, PereMasqué, PereJuan Diáz, XèniaMartín de Nascimento, JacoboPalanques, AlbertContinental MarginsSubmarine CanyonsTrawlinghttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Many studies highlight that fish trawling activities cause seafloor erosion, but the assessment of the remobilization of surface sediments and its relocation is still not well documented. These impacts were examined along the flanks and axes of three headless submarine canyons incised on the Barcelona continental margin, where trawling fleets have been operating for decades. Trawled grounds along canyon flanks presented eroded and highly reworked surface sediments resulting from the passage of heavy trawling gear. Sedimentation rates on the upper canyon axes tripled and quadrupled its natural (i.e. pre-industrialization) values after a substantial increase in total horsepower of the operating trawling fleets between 1960s and 1970s. These impacts affected the upper canyon reaches next to fishing grounds, where sediment resuspended by trawling can be transported towards the canyon axes. This study highlights that bottom trawling has the capacity to alter natural sedimentary environments by promoting sediment-starved canyon flanks, and by enhancing sedimentation rates along the contiguous axes, independently of canyons´ morphology. Considering the global mechanisation and offshore expansion of bottom trawling fisheries since the mid-20th century, these sedimentary alterations may occur in many trawled canyons worldwide, with further ecological impacts on the trophic status of these non-resilient benthic communities.Fil: Paradis, Sarah. Universitat Autònoma de Barcelona; EspañaFil: Puig, Pere. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias del Mar; EspañaFil: Masqué, Pere. University of Western Australia; Australia. Universitat Autònoma de Barcelona; España. Edith Cowan University; AustraliaFil: Juan Diáz, Xènia. Universitat Autònoma de Barcelona; EspañaFil: Martín de Nascimento, Jacobo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaFil: Palanques, Albert. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias del Mar; EspañaNature Publishing Group2017-02-24info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/63374Paradis, Sarah; Puig, Pere; Masqué, Pere; Juan Diáz, Xènia; Martín de Nascimento, Jacobo; et al.; Bottom-trawling along submarine canyons impacts deep sedimentary regimes; Nature Publishing Group; Scientific Reports; 7; 24-2-2017; 1-122045-2322CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1038/srep43332info:eu-repo/semantics/altIdentifier/url/https://www.nature.com/articles/srep43332info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-17T10:46:05Zoai:ri.conicet.gov.ar:11336/63374instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-17 10:46:05.803CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Bottom-trawling along submarine canyons impacts deep sedimentary regimes
title Bottom-trawling along submarine canyons impacts deep sedimentary regimes
spellingShingle Bottom-trawling along submarine canyons impacts deep sedimentary regimes
Paradis, Sarah
Continental Margins
Submarine Canyons
Trawling
title_short Bottom-trawling along submarine canyons impacts deep sedimentary regimes
title_full Bottom-trawling along submarine canyons impacts deep sedimentary regimes
title_fullStr Bottom-trawling along submarine canyons impacts deep sedimentary regimes
title_full_unstemmed Bottom-trawling along submarine canyons impacts deep sedimentary regimes
title_sort Bottom-trawling along submarine canyons impacts deep sedimentary regimes
dc.creator.none.fl_str_mv Paradis, Sarah
Puig, Pere
Masqué, Pere
Juan Diáz, Xènia
Martín de Nascimento, Jacobo
Palanques, Albert
author Paradis, Sarah
author_facet Paradis, Sarah
Puig, Pere
Masqué, Pere
Juan Diáz, Xènia
Martín de Nascimento, Jacobo
Palanques, Albert
author_role author
author2 Puig, Pere
Masqué, Pere
Juan Diáz, Xènia
Martín de Nascimento, Jacobo
Palanques, Albert
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Continental Margins
Submarine Canyons
Trawling
topic Continental Margins
Submarine Canyons
Trawling
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Many studies highlight that fish trawling activities cause seafloor erosion, but the assessment of the remobilization of surface sediments and its relocation is still not well documented. These impacts were examined along the flanks and axes of three headless submarine canyons incised on the Barcelona continental margin, where trawling fleets have been operating for decades. Trawled grounds along canyon flanks presented eroded and highly reworked surface sediments resulting from the passage of heavy trawling gear. Sedimentation rates on the upper canyon axes tripled and quadrupled its natural (i.e. pre-industrialization) values after a substantial increase in total horsepower of the operating trawling fleets between 1960s and 1970s. These impacts affected the upper canyon reaches next to fishing grounds, where sediment resuspended by trawling can be transported towards the canyon axes. This study highlights that bottom trawling has the capacity to alter natural sedimentary environments by promoting sediment-starved canyon flanks, and by enhancing sedimentation rates along the contiguous axes, independently of canyons´ morphology. Considering the global mechanisation and offshore expansion of bottom trawling fisheries since the mid-20th century, these sedimentary alterations may occur in many trawled canyons worldwide, with further ecological impacts on the trophic status of these non-resilient benthic communities.
Fil: Paradis, Sarah. Universitat Autònoma de Barcelona; España
Fil: Puig, Pere. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias del Mar; España
Fil: Masqué, Pere. University of Western Australia; Australia. Universitat Autònoma de Barcelona; España. Edith Cowan University; Australia
Fil: Juan Diáz, Xènia. Universitat Autònoma de Barcelona; España
Fil: Martín de Nascimento, Jacobo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Palanques, Albert. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias del Mar; España
description Many studies highlight that fish trawling activities cause seafloor erosion, but the assessment of the remobilization of surface sediments and its relocation is still not well documented. These impacts were examined along the flanks and axes of three headless submarine canyons incised on the Barcelona continental margin, where trawling fleets have been operating for decades. Trawled grounds along canyon flanks presented eroded and highly reworked surface sediments resulting from the passage of heavy trawling gear. Sedimentation rates on the upper canyon axes tripled and quadrupled its natural (i.e. pre-industrialization) values after a substantial increase in total horsepower of the operating trawling fleets between 1960s and 1970s. These impacts affected the upper canyon reaches next to fishing grounds, where sediment resuspended by trawling can be transported towards the canyon axes. This study highlights that bottom trawling has the capacity to alter natural sedimentary environments by promoting sediment-starved canyon flanks, and by enhancing sedimentation rates along the contiguous axes, independently of canyons´ morphology. Considering the global mechanisation and offshore expansion of bottom trawling fisheries since the mid-20th century, these sedimentary alterations may occur in many trawled canyons worldwide, with further ecological impacts on the trophic status of these non-resilient benthic communities.
publishDate 2017
dc.date.none.fl_str_mv 2017-02-24
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/63374
Paradis, Sarah; Puig, Pere; Masqué, Pere; Juan Diáz, Xènia; Martín de Nascimento, Jacobo; et al.; Bottom-trawling along submarine canyons impacts deep sedimentary regimes; Nature Publishing Group; Scientific Reports; 7; 24-2-2017; 1-12
2045-2322
CONICET Digital
CONICET
url http://hdl.handle.net/11336/63374
identifier_str_mv Paradis, Sarah; Puig, Pere; Masqué, Pere; Juan Diáz, Xènia; Martín de Nascimento, Jacobo; et al.; Bottom-trawling along submarine canyons impacts deep sedimentary regimes; Nature Publishing Group; Scientific Reports; 7; 24-2-2017; 1-12
2045-2322
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1038/srep43332
info:eu-repo/semantics/altIdentifier/url/https://www.nature.com/articles/srep43332
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Nature Publishing Group
publisher.none.fl_str_mv Nature Publishing Group
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.001348

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