Risk analysis and biological knowledge
The paper adresses the question whether we fully utilize the growth in biological knowledge in fish stock assessments and risk analyses. For illustrative purposes, repeated references are made to the assessment of the Northeast Arctic cod stock. In many cases existing knowledge may allow us to estab...
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ftimr:oai:imr.brage.unit.no:11250/105145 2023-05-15T14:30:27+02:00 Risk analysis and biological knowledge Ulltang, Øyvind 1993 application/pdf http://hdl.handle.net/11250/105145 eng eng ICES ICES CM Documents;1993/D:16 This report is not to be cited without prior reference to the author http://hdl.handle.net/11250/105145 14 s. monitoring overvåkning management advice forvaltningsråd VDP::Mathematics and natural science: 400::Mathematics: 410::Analysis: 411 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923 Working paper 1993 ftimr 2021-09-23T20:15:11Z The paper adresses the question whether we fully utilize the growth in biological knowledge in fish stock assessments and risk analyses. For illustrative purposes, repeated references are made to the assessment of the Northeast Arctic cod stock. In many cases existing knowledge may allow us to establish relationships for predicting short or medium term changes in vital population parameters detennining mortality, growth and recruitment. Independent variables in such relationships, with a priori justification for being chosen, could be parameters describing the state of the fish stock in question or the state of its biological or physical environment. Long time series of biological data exist for several stocks, and these data series should be properly worked up and used for testing proposed relationships. Utilizing information on the state of the system, parts of the range of variation in vital parameters can be excluded in short and medium term predictions. This would increase the empirical or informative content of our risk assessments. Report Arctic cod Arctic Northeast Arctic cod Institute for Marine Research: Brage IMR Arctic |
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Open Polar |
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Institute for Marine Research: Brage IMR |
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ftimr |
language |
English |
topic |
monitoring overvåkning management advice forvaltningsråd VDP::Mathematics and natural science: 400::Mathematics: 410::Analysis: 411 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923 |
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monitoring overvåkning management advice forvaltningsråd VDP::Mathematics and natural science: 400::Mathematics: 410::Analysis: 411 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923 Ulltang, Øyvind Risk analysis and biological knowledge |
topic_facet |
monitoring overvåkning management advice forvaltningsråd VDP::Mathematics and natural science: 400::Mathematics: 410::Analysis: 411 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923 |
description |
The paper adresses the question whether we fully utilize the growth in biological knowledge in fish stock assessments and risk analyses. For illustrative purposes, repeated references are made to the assessment of the Northeast Arctic cod stock. In many cases existing knowledge may allow us to establish relationships for predicting short or medium term changes in vital population parameters detennining mortality, growth and recruitment. Independent variables in such relationships, with a priori justification for being chosen, could be parameters describing the state of the fish stock in question or the state of its biological or physical environment. Long time series of biological data exist for several stocks, and these data series should be properly worked up and used for testing proposed relationships. Utilizing information on the state of the system, parts of the range of variation in vital parameters can be excluded in short and medium term predictions. This would increase the empirical or informative content of our risk assessments. |
format |
Report |
author |
Ulltang, Øyvind |
author_facet |
Ulltang, Øyvind |
author_sort |
Ulltang, Øyvind |
title |
Risk analysis and biological knowledge |
title_short |
Risk analysis and biological knowledge |
title_full |
Risk analysis and biological knowledge |
title_fullStr |
Risk analysis and biological knowledge |
title_full_unstemmed |
Risk analysis and biological knowledge |
title_sort |
risk analysis and biological knowledge |
publisher |
ICES |
publishDate |
1993 |
url |
http://hdl.handle.net/11250/105145 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic cod Arctic Northeast Arctic cod |
genre_facet |
Arctic cod Arctic Northeast Arctic cod |
op_source |
14 s. |
op_relation |
ICES CM Documents;1993/D:16 This report is not to be cited without prior reference to the author http://hdl.handle.net/11250/105145 |
_version_ |
1766304295461847040 |