Résultats de la recherche
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Developing robust biomass estimates and advice on catch limits in research blocks
different biomass estimates be provided. In this paper, we develop a modified CPUE by seabed area method ... by the stock assessment model as the reference biomass. We demonstrate evidence of a linear ... density estimates from Shelf/Slope and North habitat types from the Ross Sea can be used to estimate a ... CPUE by seabed area biomass in designated research blocks. We also develop a Bayesian approach that ...
Meeting Document : WG-SAM-17/37 : Auteur(s): S.J. Parker, S. Mormede, A. Dunn, S.M. Hanchet and C. Marsh
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Report to the Scientific Committee for the Conservation of Antarctic Marine Living Resources on the outcomes of the EU-H2020 Project ‘Mesopelagic Southern Ocean Prey and Predators (MESOPP)’ and its utility to SC-CAMLR
EU and Australia through two implementation actions Propose a R&D roadmap to support a large ... enhancement of collaborations by eliminating various obstacles in establishing a common methodology and a ... models. It will also contribute to a better predictive understanding of the SO based on furthering the ...
Meeting Document : SC-CAMLR-38/BG/30 : Auteur(s): A.J. Constable, P. Lehodey and P. Koubbi
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Best practice seabird by-catch mitigation for Spanish-rig longline vessels with emphasis on line weighting regimes
Abstract: The Spanish system is used in a range of demersal and semi-pelagic longline fisheries ... throughout the southern hemisphere and has been the source of a large number of seabird fatalities. An ... experiment was conducted on a chartered Spanish-rig vessel to improve the sink rate of longlines to reduce ... determined by time-depth recorders attached to lines. Separately, a trial was conducted to determine ...
Meeting Document : WG-FSA-06/22 : Auteur(s): G. Robertson (Australia), C.A. Moreno (Chile), B. Wienecke (Australia), P. Gandini (Argentina), G. McPherson (Australia) and J.-P. Seco Pon (Argentina)
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Further development of pairwise tag detection performance index and its application to the stock assessment of toothfish in the Ross Sea fishery
sustainable yields. The assessment model assumes that all vessels have equal tag detection rates; as a ... -specific tag detection performance for the Ross Sea fishery using a case-control methodology which controls ... location (i.e. in the same fishing season and within a specified distance). The index was calculated as ... the matched control hauls. By iterating over all events for all vessels, we generated a relative index ...
Meeting Document : WG-SAM-13/34 : Auteur(s): S. Mormede (New Zealand)
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Comparing surface and planimetric area across multiple scales and assessing the impact of different data sources on seabed area estimation in research blocks in the CAMLR Convention Area
scientific survey designs and models of habitat use. Planimetric seabed areas (i.e. a two-dimensional ... surface) within the Convention area are commonly calculated, but surface area (i.e. a three-dimensional ... differences between surface and planimetric areas within fishable depth ranges at the scale of a research ... based on the current CPUE-analogy calculations. However, in many of the research blocks a higher ...
Meeting Document : WG-SAM-15/01 : Auteur(s): CCAMLR Secretariat
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Information on the spawning season and gonadosomatic indices of Dissostichus mawsoni from Subarea 88.1 in the 2001/02 season
season was identified as late autumn (May). A significant difference in the condition of fish between ... summer and autumn was noted, and this may be a result of migration f or spawning. The maximum GSI ... recorded for females was 26% with a 7.5 kg ovary. The maximum GSI was 43% for a stage 3 male weighing 20 kg ...
Meeting Document : WG-FSA-02/31 : Auteur(s): G.J. Patchell (New Zealand)
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REPORT ON AUSTRALIAN VMS TRIAL IN THE CCAMLR AREA
individual fishers are detailed, together with the operational costs of VMS equipment. A range of conclusions ... are drawn from the trial; notably that VMS is a cost effective measure for a flag State to monitor ... fishing activities of its vessels and that VMS offers a range of capabilities that cannot be readily ...
Meeting Document : CCAMLR-XVI/BG/7 : Auteur(s): Delegation of Australia
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The Southern Ocean Observing System (SOOS): an update
). CCAMLR are invited to appoint an ex-officio representative to the SOOS Steering Committee. A SOOS Initial ... , and an Executive Officer, Louise Newman has been appointed. Currently, a website is being developed ... and a Scientific Steering Committee is being selected. Author(s): A joint submission by SCAR and SCOR ...
Meeting Document : CCAMLR-XXX/BG/13 : Auteur(s): A joint submission by SCAR and SCOR
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Models of Antarctic marine ecosystems in support of CCAMLR and IWC: background
Abstract: Ecosystem models are being developed to explore a range of issues globally. This paper ... to the use of ecosystem models in CCAMLR and the IWC and a history of the developmental work in those ... that need to be considered in parameterising a model, providing input data for those models and for ... CCAMLR and the IWC. Author(s): Constable, A. Title: Models of Antarctic marine ecosystems in support of ...
Meeting Document : CCAMLR-IWC-WS-08/03 : Auteur(s): Constable, A.
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Incorporating climate change into CCAMLR’s decisionmaking processes
working papers, even though climate change and ocean acidification are relevant to a wide range of policy ... submission of new or revised legislation or regulations when an issue has relevance to a broad spectrum of ... decisions. ASOC therefore recommends that CCAMLR adopt a resolution urging Members to include a climate ...
Meeting Document : CCAMLR-XXXIII/BG/21 : Auteur(s): Submitted by ASOC