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Further development of a spatially explicit population dynamics operating model for Antarctic toothfish in the Ross Sea region
Abstract: We present an optimised spatially explicit age-structured population dynamics operating ... model for Antarctic toothfish over the entire Ross Sea region, for a medium scale spatial resolution ... population dynamics model implemented using the Spatial Population Model software (SPM), and a single sex age ... . Observations include spatially explicit commercial catch proportions-at-age, proportions mature and proportions ...
Meeting Document : WG-SAM-13/35 : Автор(ы): S. Mormede, A. Dunn, S. Parker and S. Hanchet (New Zealand)
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The efficacy of video-based electronic monitoring technology for at-sea monitoring of the halibut longline fishery
among half the species for determination of an EM species identification capability. Close agreement ... combined EM-based monitoring for the halibut fishery should be continued using two approaches: an ... on the 2002 British Columbia halibut longline fishery to evaluate the feasibility of EM as an ... groupings, and the 15 fish most abundant species accounted for 98% of the catch. Data from fishing trips ...
Meeting Document : WG-FSA-03/100
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Proposal for a New SCAR KRILL Action Group
proposal is on the 18 th June 2018 at the SCAR Open Science Conference in Davos. An update on the further ... regard a proposal was submitted on 18 th February 2018 to SCAR (see attachment). The defence of the ... . Nicol Title: Proposal for a New SCAR KRILL Action Group Approval: Approved Secretariat Workflow Status ... : Content Approved Document Release Consent: No Delegation responsibility for releasing documents: CCAMLR ...
Meeting Document : WG-EMM-18/01 Rev. 1 : Автор(ы): B. Meyer, A. Brierley, S. Kawaguchi, C. Reiss and S. Nicol
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CCAMLR and climate change: the need for urgent action
Convention Area. In this paper, ASOC highlights two major scientific articles that were published this year ... in which scientists propose scenarios for the future of Antarctica and the planet in a changing ... rapidly closing window for the world to take action. Climate change requires a coordinated global response ... . Implements an overarching climate change strategy and work program. Designates a network of marine protected ...
Meeting Document : CCAMLR-XXXVII/BG/26 : Автор(ы): Submitted by ASOC
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LENGTH-BASED ASSESSMENT FOR THE MACKEREL ICEFISH (CHAMPSOCEPHALUS GUNNARI) IN SUB-AREA 48.3
Abstract: The current assessment method for the mackerel icefish (Champsocephalus gunnari) in sub ... -area 48.3 employs the CMIX and GYM packages, deriving population numbers-at-age then projecting these ... identification of cohorts from the survey model, given the differential age structures observed in the population ... data, yield an estimate of the population numbers-at-length. A length-based population projection is ...
Meeting Document : WG-SAM-09/15 : Автор(ы): R.M. Hillary, D.J. Agnew and R. Mitchell (United Kingdom)
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Results of the fifth Ross Sea shelf survey to monitor abundance of sub-adult Antarctic toothfish in the southern Ross Sea, February 2016, and notification for continuation in 2017
rates of sub-adult (<110 cm) toothfish for the core strata showed an increase to the highest point ... from age seven in 2012 to age nine in 2014 and to age ten for females in 2015. In 2016, the survey ... observed in the time series. Age frequency data from the surveys have shown the progression of a cohort ... providing a method for monitoring recruitment and estimating recruitment variability. We notify here that ...
Meeting Document : WG-SAM-16/14 : Автор(ы): A. Dunn, C. Jones, S. Mormede and S. Parker
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Calculating effective releases and recaptures for stock assessments based on tag detection and tagging mortality indices
developed using a methodology which controls for the spatial and temporal variability of fishing operations ... included in the stock assessment for the Ross Sea region and Amundsen Sea region, with the understanding ... pairwise method utilised an index of tag detection with an arbitrary threshold to determine which tag data ... estimate effective tag releases and effective numbers of fish inspected for tags based on those indices ...
Meeting Document : WG-SAM-14/30 : Автор(ы): S. Mormede (New Zealand)
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CONTINUING CCAMLR’S FIGHT AGAINST IUU FISHING FOR TOOTHFISH EXECUTIVE SUMMARY OF THE REPORT BY TRAFFIC INTERNATIONAL AND WWF AUSTRALIA
executive summary of a recent, soon to be published report produced by TRAFFIC International in conjunction ... with WWF Australia that presents a trade-based assessment of toothfish catch for the period of 2003 ... -2007 with a view to provide an indication of the extent of the IUU catch. The report highlights that in ... underestimating IUU catch by more than 50% annually. This analysis reinforces the need for ongoing vigilance by ...
Meeting Document : CCAMLR-XXVII/BG/38 : Автор(ы): Submitted by IUCN
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Estimates of the tag loss rates for single and double tagged toothfish (Dissostichus mawsoni) fishery in the Ross Sea
periods of up to six years at liberty. The loss rate for double tags had been incorrectly derived and ... -estimated for double tagged fish in the first four years and under-estimated after that. However, the tag ... (95% C.I.s 0.027–0.052) tags per year. For double tagged fish this corresponds to 99.5% of double ... tagged fish having at least one tag remaining after one year at liberty; 98.9% after two years at liberty ...
Meeting Document : WG-SAM-11/18 : Автор(ы): A. Dunn, M.H. Smith (New Zealand), D.J. Agnew (UK) and S. Mormede (New Zealand)
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Guidelines for fisheries-directed research addressing the Ross Sea region Marine Protected Area Research and Monitoring Plan
associated Research and Monitoring Plan (SC-CAMLR XXXVI-20) requires multidisciplinary research efforts by ... monitoring to evaluate the objectives of the MPA can be best informed. We review priority research topics ... criteria for fisheries-directed research proposed to inform the Research and Monitoring Plan. Author(s): S ... . Parker and A. Dunn Title: Guidelines for fisheries-directed research addressing the Ross Sea region ...
Meeting Document : WG-SAM-18/21 : Автор(ы): S. Parker and A. Dunn
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