Advances in the Assessment of Habitat Fragmentation and Protection in the NAFO Regulatory Area

NAFO has used kernel density analyses to identify VMEs dominated by large-sized sponges, sea pens, small and large gorgonian corals, erect bryozoans, sea squirts (Boltenia ovifera), and black corals. That analysis generates polygons of significant concentrations of biomass for each VME indicator whi...

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Detalles Bibliográficos
Autores: Sacau-Cuadrado, María del Mar, Wang, Shuangqiang, Kenchington, Ellen, Murillo, Francisco Javier, Lirette, C., Koen-Alonso, Mariano, Kenny, Andrew
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2022
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/327276
Acceso en línea:http://hdl.handle.net/10261/327276
Access Level:acceso abierto
Palabra clave:Centro Oceanográfico de Vigo
NAFO
Pesquerías
VMEs
Fragmentation
Kernel Analysis
fish
oceanography
density
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spelling Advances in the Assessment of Habitat Fragmentation and Protection in the NAFO Regulatory AreaSacau-Cuadrado, María del MarWang, ShuangqiangKenchington, EllenMurillo, Francisco JavierLirette, C.Koen-Alonso, MarianoKenny, AndrewCentro Oceanográfico de VigoNAFOPesqueríasVMEsFragmentationKernel AnalysisfishoceanographydensityNAFO has used kernel density analyses to identify VMEs dominated by large-sized sponges, sea pens, small and large gorgonian corals, erect bryozoans, sea squirts (Boltenia ovifera), and black corals. That analysis generates polygons of significant concentrations of biomass for each VME indicator which are spread across the spatial domain of the NAFO fishing footprint. There is potential for bottom contact fishing to induce changes in both the amount and configuration of habitat (e.g., decreased polygon size, increased polygon isolation, and increased edge area) through direct and indirect impacts, and it is unknown to what degree such changes may already have taken place given the long fishing history of the area. In the Report of the 13th Meeting of the NAFO Scientific Council Working Group on Ecosystem Science and Assessment (WGE-ESA), preliminary work on assessing and monitoring habitat fragmentation was presented. Here we continue that work by recalculating the indices after removing connections that are not identified through particle tracking models. We have reanalyzed the nearest neighbour distances and PX, a proximity index, for the VME polygons noted above, and for the new closed areas that will come into effect 1 January 2022. We show that PX when applied to the new closures appears sensitive to their spatial configuration which bodes will for the ability of this index to identify habitat fragmentation in the future, brought about through fishing activities and/or natural disturbances.NOConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202320232022info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/327276reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésCentro Oceanográfico de Vigohttps://www.nafo.int/Portals/0/PDFs/sc/2021/scr21-049.pdfSíinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3272762026-05-22T06:33:51Z
dc.title.none.fl_str_mv Advances in the Assessment of Habitat Fragmentation and Protection in the NAFO Regulatory Area
title Advances in the Assessment of Habitat Fragmentation and Protection in the NAFO Regulatory Area
spellingShingle Advances in the Assessment of Habitat Fragmentation and Protection in the NAFO Regulatory Area
Sacau-Cuadrado, María del Mar
Centro Oceanográfico de Vigo
NAFO
Pesquerías
VMEs
Fragmentation
Kernel Analysis
fish
oceanography
density
title_short Advances in the Assessment of Habitat Fragmentation and Protection in the NAFO Regulatory Area
title_full Advances in the Assessment of Habitat Fragmentation and Protection in the NAFO Regulatory Area
title_fullStr Advances in the Assessment of Habitat Fragmentation and Protection in the NAFO Regulatory Area
title_full_unstemmed Advances in the Assessment of Habitat Fragmentation and Protection in the NAFO Regulatory Area
title_sort Advances in the Assessment of Habitat Fragmentation and Protection in the NAFO Regulatory Area
dc.creator.none.fl_str_mv Sacau-Cuadrado, María del Mar
Wang, Shuangqiang
Kenchington, Ellen
Murillo, Francisco Javier
Lirette, C.
Koen-Alonso, Mariano
Kenny, Andrew
author Sacau-Cuadrado, María del Mar
author_facet Sacau-Cuadrado, María del Mar
Wang, Shuangqiang
Kenchington, Ellen
Murillo, Francisco Javier
Lirette, C.
Koen-Alonso, Mariano
Kenny, Andrew
author_role author
author2 Wang, Shuangqiang
Kenchington, Ellen
Murillo, Francisco Javier
Lirette, C.
Koen-Alonso, Mariano
Kenny, Andrew
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Centro Oceanográfico de Vigo
NAFO
Pesquerías
VMEs
Fragmentation
Kernel Analysis
fish
oceanography
density
topic Centro Oceanográfico de Vigo
NAFO
Pesquerías
VMEs
Fragmentation
Kernel Analysis
fish
oceanography
density
description NAFO has used kernel density analyses to identify VMEs dominated by large-sized sponges, sea pens, small and large gorgonian corals, erect bryozoans, sea squirts (Boltenia ovifera), and black corals. That analysis generates polygons of significant concentrations of biomass for each VME indicator which are spread across the spatial domain of the NAFO fishing footprint. There is potential for bottom contact fishing to induce changes in both the amount and configuration of habitat (e.g., decreased polygon size, increased polygon isolation, and increased edge area) through direct and indirect impacts, and it is unknown to what degree such changes may already have taken place given the long fishing history of the area. In the Report of the 13th Meeting of the NAFO Scientific Council Working Group on Ecosystem Science and Assessment (WGE-ESA), preliminary work on assessing and monitoring habitat fragmentation was presented. Here we continue that work by recalculating the indices after removing connections that are not identified through particle tracking models. We have reanalyzed the nearest neighbour distances and PX, a proximity index, for the VME polygons noted above, and for the new closed areas that will come into effect 1 January 2022. We show that PX when applied to the new closures appears sensitive to their spatial configuration which bodes will for the ability of this index to identify habitat fragmentation in the future, brought about through fishing activities and/or natural disturbances.
publishDate 2022
dc.date.none.fl_str_mv 2022
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/327276
url http://hdl.handle.net/10261/327276
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Centro Oceanográfico de Vigo
https://www.nafo.int/Portals/0/PDFs/sc/2021/scr21-049.pdf
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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