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Length-based assessments revisited – why stock status and fishing mortality of long-lived species such as toothfish cannot be inferred from length-frequency data alone
/ Description: In many of CCAMLR’s new and exploratory fisheries, stock assessment techniques are still in ... development. The failure of the tag-recapture program to provide robust assessments in many areas and doubts ... and fishing mortality from length-frequency data alone. In this paper, a number of length-based stock ... assessment methods are revisited and some limitations in their ability to draw robust inferences about stock ... (Dissostichus eleginoides) and Antarctic toothfish (D. mawsoni) in the Convention Area, a research plan, a ... abundance estimates. Tag- recapture data have been considered poor in many instances due to general ... problems with low tagging rates, insufficient overlap in the geographical loca- tion and the length ... Email – philippe.ziegler@aad.gov.au Abstract In many of CCAMLR’s new and exploratory fisheries, stock ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 57–73 : Autor(es): Ziegler, P.E., D.C. Welsford and A.J. Constable
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e-sc-xx-a4.pdf
... AND TRENDS IN THE FISHERY ...................................................... 131 Fishing ... AND TRENDS IN THE KRILL-CENTRIC ECOSYSTEM ....................... 137 CEMP Indices ... .................................................................. 185 APPENDIX D: Revised Draft Fishery Plan for the Krill Fishery in Area 48 .............. 193 ... made on the work of CCAMLR and developments since the 1990 meeting of WG-CEMP in Stockholm. It was
application/pdf attached to:WG-EMM-01Meeting Report : WG-EMM-01
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e-sc-ix.pdf
... of Antarctic Marine Living Resources held in Hobart, Australia, from 22 to 29 October 1990. Major ... Date (Annex 5, Paragraph 9) By-Catch of Fish Larvae and Juvenile Fish in the Krill Fishery (Annex 5 ... , Paragraph 95) Assessments of Individual Stocks Notothenia rossii in Subarea 48.3 (Annex 5, Paragraphs ... 96 to 98) Management Advice Champsocephalus gunnari in Subarea 48.3 (Annex 5, Paragraphs 99 to
application/pdf attached to:SC-CAMLR-IXMeeting Report : SC-CAMLR-IX
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e-sc-xxvii.pdf
... ________________________________________________________________________________________ This document is produced in the official languages of the Commission: English, French ... Committee for the Conservation of Antarctic Marine Living Resources held in Hobart, Australia, from 27 to ... annexed in Part I. The Report of the Joint CCAMLR-IWC Workshop is annexed separately in Part II ... .................................................. 4 ADVANCES IN STATISTICS, ASSESSMENTS, MODELLING AND SURVEY METHODS
application/pdf attached to:SC-CAMLR-XXVIIMeeting Report : SC-CAMLR-XXVII
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e-sc-x-a6.pdf
... in anticipation of their arrival and also to allow participants time to read all the tabled papers ... . GENERAL MATTERS AND APPOINTMENT OF RAPPORTEURS 2.1 A List of Participants is given in Appendix A. 2.2 ... Assessment Groups, Agenda Item 7; and Dr D. Agnew (Secretariat), Agenda Items 8 to 11. 2.3 In accordance ... . Gasiukov (USSR), both of whom had notified their intention to participate in the meeting, were unable to
application/pdf attached to:WG-FSA-91Meeting Report : WG-FSA-91
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e-sc-xxiii-a4-appD.pdf
... DESIRABLE ATTRIBUTES OF ECOSYSTEM MODELS .............................. 243 Attributes of models in the ... to Krill Management, which was established in the program of work for WG-EMM in 2001, was held at ... . Constable (Australia). 1.2 In 2003, the terms of reference for the workshop were agreed to be (SC-CAMLR ... and temporal characteristics of models and their potential limitations in space and time; (e
application/pdf attached to:WS-PEMTAKM-04Meeting Report : WS-PEMTAKM-04
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e-sc-40-a6.pdf
... analysis supporting spatial management approaches in CCAMLR .............. 161 Research and monitoring ... (Appendix B). 1.3 Documents submitted to the meeting are listed in Appendix C. The Working Group thanked ... advice to the Scientific Committee and other working groups are highlighted and collated in ‘Advice to ... results from the multidisciplinary large-scale survey of the eastern sector of CCAMLR Division 58.4.2 to
application/pdf attached to:WG-EMM-2021Meeting Report : WG-EMM-2021
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e-sc-xxvii-a12.pdf
... continent in eastern Antarctica. Moreover, diatom records from ocean-floor sediment cores indicate a sea ... ________________________________________________________________________________________ This document is produced in the official languages of the Commission: English, French ... mortality of marine mammals and seabirds associated with fishing in the CAMLR Convention Area ... .............................. 107 Glossary of acronyms and abbreviations used in this report ............................... 115
application/pdf attached to:CCAMLR-IWC-WS-08Meeting Report : CCAMLR-IWC-WS-08
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e-sc-xxx-a05.pdf
... joint session of WG-EMM and WG-SAM, participants paused in memory of those lost during the tragic ... progression of catch limits in data-poor fisheries .............. 218 Reports of current activities ... FINFISH STOCKS IN ESTABLISHED FISHERIES, NOTABLY DISSOSTICHUS SPP ... STRATEGIES FOR ACQUIRING DATA AND SETTING CATCH LIMITS IN DATA-POOR FISHERIES
application/pdf attached to:WG-SAM-11Meeting Report : WG-SAM-11
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e-cc-xxxiii.pdf
... ________________________________________________________________________________________ This document is produced in the official languages of the Commission: English, French ... the Commission for the Conservation of Antarctic Marine Living Resources held in Hobart, Australia ... , unreported and unregulated fishing in the Convention Area; vulnerable marine ecosystems and bottom fishing ... ; the establishment of a representative system of marine protected areas in the Convention Area
application/pdf attached to:CCAMLR-XXXIIIMeeting Report : CCAMLR-XXXIII