Proceedings of the Maritimes Regional Advisory Process Meeting on the Assessment Framework for 4T Herring PDF Download
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Languages : en
Pages : 23
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These proceedings review working paper presentations & discussions at a meeting held to review the virtual population analysis (VPA) assessment model for use on the spring & fall herring stocks in the southern Gulf of St. Lawrence. The meeting focussed on the VPA model, and in particular the resolution of the problems encountered in the spring 2002 assessment and the retrospective patterns seen in the fall spawning component. Other topics covered include issues in VPA formulation, data collection requirements, and acoustic indices as part of an alternate decision rule system.
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Category :
Languages : en
Pages : 23
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Book Description
These proceedings review working paper presentations & discussions at a meeting held to review the virtual population analysis (VPA) assessment model for use on the spring & fall herring stocks in the southern Gulf of St. Lawrence. The meeting focussed on the VPA model, and in particular the resolution of the problems encountered in the spring 2002 assessment and the retrospective patterns seen in the fall spawning component. Other topics covered include issues in VPA formulation, data collection requirements, and acoustic indices as part of an alternate decision rule system.
Author:
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Category :
Languages : en
Pages :
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Author:
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Category :
Languages : en
Pages : 23
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Author:
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Category :
Languages : en
Pages : 0
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It was pointed out that the fall component of the resource is larger than 1 Gulf and Maritimes Regions 4T Herring Framework that of the spring, with the approximately 50,000t landed from the fall component being about double that of the spring. [...] There was a comment that the difference in the spring and fall CPUE series might be due to the differing catchability in the spring and fall of the four year olds. [...] The analysis then focused on the treatment of the CPUE indices in the VPA as the source of the retrospective patterns. [...] VPA FORMULATION This section summarizes the discussion of the group that considered the VPA formulation on the Wednesday morning of the meeting along with the subsequent discussion in plenary. [...] This might be overly influencing the trend in the series and might be an underlying reason for the difference between the trends in the CPUE and acoustic indices.
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Languages : en
Pages :
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Category :
Languages : en
Pages : 33
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The purpose of these proceedings is to record the activities and discussions that took place during a review of the status of herring in NAFO zones 4T and 4VWX. It summarizes presentations made by herring assessment teams as well as other presentations on related topics, including a description of a new acoustic calibration method, management rules in several Scotian Shelf gillnet fisheries, and the development of a method to estimate herring biomass and exploitation rate using acoustic receivers deployed on commercial fishing vessels.
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Category :
Languages : en
Pages : 68
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These proceedings summarize the discussions that took place during a Regional Advisory Process meeting to review the status of 2 herring populations in the Maritimes and Gulf regions. In addition to the population assessments a number of supporting documents that presented fishery information collected and analysed by industry-funded participants were reviewed, as well as a proposal for a new approach to managing the fisheries using decision rules based on acoustic estimates of local proven stocks. The annex contains the draft stock status reports that resulted from the meeting.
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Languages : en
Pages :
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Category : Atlantic herring
Languages : en
Pages : 30
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Author: Bedford Institute of Oceanography
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Category : Oceanography
Languages : en
Pages : 104
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