Modelling Of Age-Dependent Instantaneous Coefficients Of Natural Mortality For Northeast Arctic Cod ...
No abstracts are to be cited without prior reference to the author.Natural mortality coefficients used to assess the commercial cod stock are presently taken to be identical (M=0.20) for almost all age groups of this stock. The paper describes a model suggesting that instantaneous coefficients of na...
Main Author: | |
---|---|
Format: | Conference Object |
Language: | unknown |
Published: |
ASC 2000 - V - Theme session
2024
|
Subjects: | |
Online Access: | https://dx.doi.org/10.17895/ices.pub.25636968.v1 https://ices-library.figshare.com/articles/conference_contribution/Modelling_Of_Age-Dependent_Instantaneous_Coefficients_Of_Natural_Mortality_For_Northeast_Arctic_Cod/25636968/1 |
id |
ftdatacite:10.17895/ices.pub.25636968.v1 |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.17895/ices.pub.25636968.v1 2024-06-09T07:42:45+00:00 Modelling Of Age-Dependent Instantaneous Coefficients Of Natural Mortality For Northeast Arctic Cod ... Tretyak, V. L. 2024 https://dx.doi.org/10.17895/ices.pub.25636968.v1 https://ices-library.figshare.com/articles/conference_contribution/Modelling_Of_Age-Dependent_Instantaneous_Coefficients_Of_Natural_Mortality_For_Northeast_Arctic_Cod/25636968/1 unknown ASC 2000 - V - Theme session https://ices-library.figshare.com/ICES-ASC-2000/groups https://dx.doi.org/10.17895/ices.pub.25636968 https://ices-library.figshare.com/ICES-ASC-2000/groups ICES Custom Licence https://www.ices.dk/Pages/library_policies.aspx Fisheries and aquaculture Other CreativeWork Conference contribution article 2024 ftdatacite https://doi.org/10.17895/ices.pub.25636968.v110.17895/ices.pub.25636968 2024-05-13T14:08:28Z No abstracts are to be cited without prior reference to the author.Natural mortality coefficients used to assess the commercial cod stock are presently taken to be identical (M=0.20) for almost all age groups of this stock. The paper describes a model suggesting that instantaneous coefficients of natural mortality change with age increasing from 3 years and further. The model explicitly reflects a conceptual relationship between natural mortality of cod, maturity age and theoretical maximum possible lifetime, and implicitly between natural mortality, linear and weight growth. Theoretical premises of the model are formulated and a method of estimating its parameters is suggested. Natural mortality coefficients are calculated for cod from 1946-1991 yearclasses at the age of 3 years and older. To calculate terminal values of coefficients mean weight of one fish at a particular age and the mean of average yearly water temperature in the main branch of the Murman Current in the O-200 m layer in the first three ... Conference Object Arctic cod Arctic Northeast Arctic cod DataCite Metadata Store (German National Library of Science and Technology) Arctic |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Fisheries and aquaculture |
spellingShingle |
Fisheries and aquaculture Tretyak, V. L. Modelling Of Age-Dependent Instantaneous Coefficients Of Natural Mortality For Northeast Arctic Cod ... |
topic_facet |
Fisheries and aquaculture |
description |
No abstracts are to be cited without prior reference to the author.Natural mortality coefficients used to assess the commercial cod stock are presently taken to be identical (M=0.20) for almost all age groups of this stock. The paper describes a model suggesting that instantaneous coefficients of natural mortality change with age increasing from 3 years and further. The model explicitly reflects a conceptual relationship between natural mortality of cod, maturity age and theoretical maximum possible lifetime, and implicitly between natural mortality, linear and weight growth. Theoretical premises of the model are formulated and a method of estimating its parameters is suggested. Natural mortality coefficients are calculated for cod from 1946-1991 yearclasses at the age of 3 years and older. To calculate terminal values of coefficients mean weight of one fish at a particular age and the mean of average yearly water temperature in the main branch of the Murman Current in the O-200 m layer in the first three ... |
format |
Conference Object |
author |
Tretyak, V. L. |
author_facet |
Tretyak, V. L. |
author_sort |
Tretyak, V. L. |
title |
Modelling Of Age-Dependent Instantaneous Coefficients Of Natural Mortality For Northeast Arctic Cod ... |
title_short |
Modelling Of Age-Dependent Instantaneous Coefficients Of Natural Mortality For Northeast Arctic Cod ... |
title_full |
Modelling Of Age-Dependent Instantaneous Coefficients Of Natural Mortality For Northeast Arctic Cod ... |
title_fullStr |
Modelling Of Age-Dependent Instantaneous Coefficients Of Natural Mortality For Northeast Arctic Cod ... |
title_full_unstemmed |
Modelling Of Age-Dependent Instantaneous Coefficients Of Natural Mortality For Northeast Arctic Cod ... |
title_sort |
modelling of age-dependent instantaneous coefficients of natural mortality for northeast arctic cod ... |
publisher |
ASC 2000 - V - Theme session |
publishDate |
2024 |
url |
https://dx.doi.org/10.17895/ices.pub.25636968.v1 https://ices-library.figshare.com/articles/conference_contribution/Modelling_Of_Age-Dependent_Instantaneous_Coefficients_Of_Natural_Mortality_For_Northeast_Arctic_Cod/25636968/1 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic cod Arctic Northeast Arctic cod |
genre_facet |
Arctic cod Arctic Northeast Arctic cod |
op_relation |
https://ices-library.figshare.com/ICES-ASC-2000/groups https://dx.doi.org/10.17895/ices.pub.25636968 https://ices-library.figshare.com/ICES-ASC-2000/groups |
op_rights |
ICES Custom Licence https://www.ices.dk/Pages/library_policies.aspx |
op_doi |
https://doi.org/10.17895/ices.pub.25636968.v110.17895/ices.pub.25636968 |
_version_ |
1801371469940260864 |