Working Group on Elasmobranch Fishes (WGEF)
ICES WGEF meets annually and is responsible for providing assessments and advice on the state of the stocks of sharks, skates, and rays throughout the ICES area. In 2021, WGEF provided advice for 16 stocks of rays and skates distributed the North Sea ecoregion, the Azores and MAR; catsharks (Scylior...
Main Authors: | , , , , , , , , , , , , , , , , , , , , , |
---|---|
Format: | Text |
Language: | English |
Published: |
ICES
2022
|
Subjects: | |
Online Access: | https://doi.org/10.17895/ices.pub.21089833 https://www.openagrar.de/receive/openagrar_mods_00085609 https://www.openagrar.de/servlets/MCRFileNodeServlet/openagrar_derivate_00051641/dn065836.pdf |
id |
ftopenagrar:oai:www.openagrar.de:openagrar_mods_00085609 |
---|---|
record_format |
openpolar |
spelling |
ftopenagrar:oai:www.openagrar.de:openagrar_mods_00085609 2023-05-15T17:41:24+02:00 Working Group on Elasmobranch Fishes (WGEF) Barreau, Thomas Batsleer, Jurgen Baulier, Loic Biais, Gérard Bleeker, Katinka De Olivera, José A. A. Ellis, Jim Griffiths, Christopher Jakobsdottir, Klara Johnston, Graham Junge, Claudia Lemey, Laura Lleal, Wendel Miethe, Tanja Moura, Teresa Knutsen Myrlund, Marlén Phillips, Sophy Rodriguez-Cabello, Cristina Santos, Régis Schaber, Matthias Silva, Joana Walker, Paddy 2022 xix, 848 Seiten https://doi.org/10.17895/ices.pub.21089833 https://www.openagrar.de/receive/openagrar_mods_00085609 https://www.openagrar.de/servlets/MCRFileNodeServlet/openagrar_derivate_00051641/dn065836.pdf eng eng ICES https://doi.org/10.17895/ices.pub.21089833 https://www.openagrar.de/receive/openagrar_mods_00085609 https://www.openagrar.de/servlets/MCRFileNodeServlet/openagrar_derivate_00051641/dn065836.pdf public https://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess CC-BY Text ddc:590 ddc:310 Elasmobranch -- sharks -- skates -- rays -- basking shark -- dogfish -- spurdog -- WGEF collection Text 2022 ftopenagrar https://doi.org/10.17895/ices.pub.21089833 2023-02-13T00:03:17Z ICES WGEF meets annually and is responsible for providing assessments and advice on the state of the stocks of sharks, skates, and rays throughout the ICES area. In 2021, WGEF provided advice for 16 stocks of rays and skates distributed the North Sea ecoregion, the Azores and MAR; catsharks (Scyliorhinidae) in the Greater North Sea, Celtic Seas and Bay of Biscay and Iberian Coast ecoregions; smooth-hounds in the Northeast Atlantic; and tope shark in the Northeast Atlantic. Despite improvements of reported landings in the past decade, quality check and error corrections, reliable time-series of landings do not span more than 10–12 years for most stocks. Estimated discards are uncertain because elasmobranchs are mostly bycatch in all types of fisheries and national sampling effort might be insufficient for estimating precise and unbiased discards for elasmobranchs. Further, survival of discarded elasmobranchs is thought to be high but quantitative estimates are scarce so that the relationship between discards and dead catches is unknown. As a consequence, for numerous stocks it is not possible to provide catch advice. For those stocks, advice on landings is formulated. The majority of WGEF stocks are assessed as Category 3 stocks, i.e. the advice is based on trends derived from scientific surveys. In November 2020, a workshop (WKSKATE) was held to evaluate criteria for the representativeness of surveys as well as to standardize and revise methods for calculating stock size indicators. Recommendations from WKSKATE were reviewed by the group and applied to the assessments where deemed appropriate. Consequently, for three stocks i.e. thornback ray and lesser spotted dogfish in the greater North Sea (rjc.27.3a47d and syc.27.3a47d) and smooth-hound in the ICES area (sdv.27.nea) surveys were added to the assessment, while for spotted ray in the North Sea (rjm.27.3a47d) the UK(E&W)–BTS–Q3 was excluded. For those stocks classified as ICES category 5 and 6 stocks, i.e. for which even survey data are lacking and only ... Text Northeast Atlantic OpenAgrar (OA) |
institution |
Open Polar |
collection |
OpenAgrar (OA) |
op_collection_id |
ftopenagrar |
language |
English |
topic |
Text ddc:590 ddc:310 Elasmobranch -- sharks -- skates -- rays -- basking shark -- dogfish -- spurdog -- WGEF |
spellingShingle |
Text ddc:590 ddc:310 Elasmobranch -- sharks -- skates -- rays -- basking shark -- dogfish -- spurdog -- WGEF Barreau, Thomas Batsleer, Jurgen Baulier, Loic Biais, Gérard Bleeker, Katinka De Olivera, José A. A. Ellis, Jim Griffiths, Christopher Jakobsdottir, Klara Johnston, Graham Junge, Claudia Lemey, Laura Lleal, Wendel Miethe, Tanja Moura, Teresa Knutsen Myrlund, Marlén Phillips, Sophy Rodriguez-Cabello, Cristina Santos, Régis Schaber, Matthias Silva, Joana Walker, Paddy Working Group on Elasmobranch Fishes (WGEF) |
topic_facet |
Text ddc:590 ddc:310 Elasmobranch -- sharks -- skates -- rays -- basking shark -- dogfish -- spurdog -- WGEF |
description |
ICES WGEF meets annually and is responsible for providing assessments and advice on the state of the stocks of sharks, skates, and rays throughout the ICES area. In 2021, WGEF provided advice for 16 stocks of rays and skates distributed the North Sea ecoregion, the Azores and MAR; catsharks (Scyliorhinidae) in the Greater North Sea, Celtic Seas and Bay of Biscay and Iberian Coast ecoregions; smooth-hounds in the Northeast Atlantic; and tope shark in the Northeast Atlantic. Despite improvements of reported landings in the past decade, quality check and error corrections, reliable time-series of landings do not span more than 10–12 years for most stocks. Estimated discards are uncertain because elasmobranchs are mostly bycatch in all types of fisheries and national sampling effort might be insufficient for estimating precise and unbiased discards for elasmobranchs. Further, survival of discarded elasmobranchs is thought to be high but quantitative estimates are scarce so that the relationship between discards and dead catches is unknown. As a consequence, for numerous stocks it is not possible to provide catch advice. For those stocks, advice on landings is formulated. The majority of WGEF stocks are assessed as Category 3 stocks, i.e. the advice is based on trends derived from scientific surveys. In November 2020, a workshop (WKSKATE) was held to evaluate criteria for the representativeness of surveys as well as to standardize and revise methods for calculating stock size indicators. Recommendations from WKSKATE were reviewed by the group and applied to the assessments where deemed appropriate. Consequently, for three stocks i.e. thornback ray and lesser spotted dogfish in the greater North Sea (rjc.27.3a47d and syc.27.3a47d) and smooth-hound in the ICES area (sdv.27.nea) surveys were added to the assessment, while for spotted ray in the North Sea (rjm.27.3a47d) the UK(E&W)–BTS–Q3 was excluded. For those stocks classified as ICES category 5 and 6 stocks, i.e. for which even survey data are lacking and only ... |
format |
Text |
author |
Barreau, Thomas Batsleer, Jurgen Baulier, Loic Biais, Gérard Bleeker, Katinka De Olivera, José A. A. Ellis, Jim Griffiths, Christopher Jakobsdottir, Klara Johnston, Graham Junge, Claudia Lemey, Laura Lleal, Wendel Miethe, Tanja Moura, Teresa Knutsen Myrlund, Marlén Phillips, Sophy Rodriguez-Cabello, Cristina Santos, Régis Schaber, Matthias Silva, Joana Walker, Paddy |
author_facet |
Barreau, Thomas Batsleer, Jurgen Baulier, Loic Biais, Gérard Bleeker, Katinka De Olivera, José A. A. Ellis, Jim Griffiths, Christopher Jakobsdottir, Klara Johnston, Graham Junge, Claudia Lemey, Laura Lleal, Wendel Miethe, Tanja Moura, Teresa Knutsen Myrlund, Marlén Phillips, Sophy Rodriguez-Cabello, Cristina Santos, Régis Schaber, Matthias Silva, Joana Walker, Paddy |
author_sort |
Barreau, Thomas |
title |
Working Group on Elasmobranch Fishes (WGEF) |
title_short |
Working Group on Elasmobranch Fishes (WGEF) |
title_full |
Working Group on Elasmobranch Fishes (WGEF) |
title_fullStr |
Working Group on Elasmobranch Fishes (WGEF) |
title_full_unstemmed |
Working Group on Elasmobranch Fishes (WGEF) |
title_sort |
working group on elasmobranch fishes (wgef) |
publisher |
ICES |
publishDate |
2022 |
url |
https://doi.org/10.17895/ices.pub.21089833 https://www.openagrar.de/receive/openagrar_mods_00085609 https://www.openagrar.de/servlets/MCRFileNodeServlet/openagrar_derivate_00051641/dn065836.pdf |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_relation |
https://doi.org/10.17895/ices.pub.21089833 https://www.openagrar.de/receive/openagrar_mods_00085609 https://www.openagrar.de/servlets/MCRFileNodeServlet/openagrar_derivate_00051641/dn065836.pdf |
op_rights |
public https://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.17895/ices.pub.21089833 |
_version_ |
1766142933882372096 |