Stochastic population dynamics of beaked redfish (Sebastes mentella) ...
No abstracts are to be cited without prior reference to the author.The beaked redfish in the Barents Sea is at historical low abundance levels as a result of previous overexploitation and is considered as vulnerable by the Norwegian red list. The management of the population is currently based on su...
Main Authors: | , , , , , |
---|---|
Format: | Conference Object |
Language: | unknown |
Published: |
ASC 2011 - Theme session A
2024
|
Subjects: | |
Online Access: | https://dx.doi.org/10.17895/ices.pub.25028651 https://ices-library.figshare.com/articles/conference_contribution/Stochastic_population_dynamics_of_beaked_redfish_Sebastes_mentella_/25028651 |
id |
ftdatacite:10.17895/ices.pub.25028651 |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.17895/ices.pub.25028651 2024-02-27T08:39:08+00:00 Stochastic population dynamics of beaked redfish (Sebastes mentella) ... Bjørkvoll, Eirin Grøtan, Vidar Aanes, Sondre Sæther, Bernt-Erik Engen, Steinar Aanes, Ronny 2024 https://dx.doi.org/10.17895/ices.pub.25028651 https://ices-library.figshare.com/articles/conference_contribution/Stochastic_population_dynamics_of_beaked_redfish_Sebastes_mentella_/25028651 unknown ASC 2011 - Theme session A https://ices-library.figshare.com/ICES-ASC-2011/groups ICES Custom Licence https://www.ices.dk/Pages/library_policies.aspx Ecosystem observation, processes and dynamics Pressures, impacts, conservation, and management CreativeWork Conference contribution Other article 2024 ftdatacite https://doi.org/10.17895/ices.pub.25028651 2024-02-01T16:25:46Z No abstracts are to be cited without prior reference to the author.The beaked redfish in the Barents Sea is at historical low abundance levels as a result of previous overexploitation and is considered as vulnerable by the Norwegian red list. The management of the population is currently based on survey data that only indicate abundance trends, and no analytical assessment is done. Using a Bayesian modelling framework, we have fitted an agestructured stochastic population model to catch and survey data. The model accounts for observation errors, separates natural mortality from fishing mortality, estimates important population dynamical parameters, and provides age‐specific estimates of abundances for ages 6–18 years between 1992 and 2009. Our results indicate that the population increased from 317 (95% CI 188,523) to 824 (316,1723) million individuals during 1992–1997, and gradually decreased to 227 (109,433) million individuals in 2009. The last strong cohorts were born in the late 1980s and early 1990s ... Conference Object Barents Sea Sebastes mentella DataCite Metadata Store (German National Library of Science and Technology) Barents Sea |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Ecosystem observation, processes and dynamics Pressures, impacts, conservation, and management |
spellingShingle |
Ecosystem observation, processes and dynamics Pressures, impacts, conservation, and management Bjørkvoll, Eirin Grøtan, Vidar Aanes, Sondre Sæther, Bernt-Erik Engen, Steinar Aanes, Ronny Stochastic population dynamics of beaked redfish (Sebastes mentella) ... |
topic_facet |
Ecosystem observation, processes and dynamics Pressures, impacts, conservation, and management |
description |
No abstracts are to be cited without prior reference to the author.The beaked redfish in the Barents Sea is at historical low abundance levels as a result of previous overexploitation and is considered as vulnerable by the Norwegian red list. The management of the population is currently based on survey data that only indicate abundance trends, and no analytical assessment is done. Using a Bayesian modelling framework, we have fitted an agestructured stochastic population model to catch and survey data. The model accounts for observation errors, separates natural mortality from fishing mortality, estimates important population dynamical parameters, and provides age‐specific estimates of abundances for ages 6–18 years between 1992 and 2009. Our results indicate that the population increased from 317 (95% CI 188,523) to 824 (316,1723) million individuals during 1992–1997, and gradually decreased to 227 (109,433) million individuals in 2009. The last strong cohorts were born in the late 1980s and early 1990s ... |
format |
Conference Object |
author |
Bjørkvoll, Eirin Grøtan, Vidar Aanes, Sondre Sæther, Bernt-Erik Engen, Steinar Aanes, Ronny |
author_facet |
Bjørkvoll, Eirin Grøtan, Vidar Aanes, Sondre Sæther, Bernt-Erik Engen, Steinar Aanes, Ronny |
author_sort |
Bjørkvoll, Eirin |
title |
Stochastic population dynamics of beaked redfish (Sebastes mentella) ... |
title_short |
Stochastic population dynamics of beaked redfish (Sebastes mentella) ... |
title_full |
Stochastic population dynamics of beaked redfish (Sebastes mentella) ... |
title_fullStr |
Stochastic population dynamics of beaked redfish (Sebastes mentella) ... |
title_full_unstemmed |
Stochastic population dynamics of beaked redfish (Sebastes mentella) ... |
title_sort |
stochastic population dynamics of beaked redfish (sebastes mentella) ... |
publisher |
ASC 2011 - Theme session A |
publishDate |
2024 |
url |
https://dx.doi.org/10.17895/ices.pub.25028651 https://ices-library.figshare.com/articles/conference_contribution/Stochastic_population_dynamics_of_beaked_redfish_Sebastes_mentella_/25028651 |
geographic |
Barents Sea |
geographic_facet |
Barents Sea |
genre |
Barents Sea Sebastes mentella |
genre_facet |
Barents Sea Sebastes mentella |
op_relation |
https://ices-library.figshare.com/ICES-ASC-2011/groups |
op_rights |
ICES Custom Licence https://www.ices.dk/Pages/library_policies.aspx |
op_doi |
https://doi.org/10.17895/ices.pub.25028651 |
_version_ |
1792046121831366656 |