Résultats de la recherche
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A survey of fish stocks in the Heard Island and McDonald Islands region in the 1999/2000 season and a comparison of the abundances of selected species with those obtained in previous surveys
Abstract: A random stratified trawl survey was conducted in May 2000 to assess the abundance of ... stratum. A total of seven surveys have been conducted in the Heard Island and McDonald Islands region ... , varying by a factor of 2-3 between years, but C. gunnari abundance can vary by a factor of about 20 ... . Author(s): R. Williams, A. Constable, T. Lamb and E. van Wijk (Australia) Title: A survey of fish ...
Meeting Document : WG-FSA-00/40 : Auteur(s): R. Williams, A. Constable, T. Lamb and E. van Wijk (Australia)
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Further computations of the consequences of setting the annual krill catch limit to a fixed fraction of the estimate of krill biomass from a survey
Abstract: The results of Butterworth et al. (1992) relating potential krill yield to a pre ... integration over the ranges of uncertainty for a number of the model parameters. Results are provided for the ... a function of the fraction of the biomass estimate which is set as the catch for a 20-year period ... preferable to a summer harvest. However, the imposition of an upper-bound of 1.5 yr-1 on the effective annual ...
Meeting Document : WG-KRILL-93/42 : Auteur(s): D.S. Butterworth, G.R. Gluckman, R.B. Thomson and S. Chalis (South Africa)
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New research consistent with a proposed draft Research and Monitoring Plan for a Ross Sea region MPA
Abstract: In 2013 New Zealand and the USA submitted a draft research and monitoring plan to ... accompany a proposal for a Marine Protected Area in the Ross Sea region. In this paper we describe new ... in multi-Member collaboration toward the implementation of a genuinely multi-Member ecosystem ... the USA Title: New research consistent with a proposed draft Research and Monitoring Plan for a Ross ...
Meeting Document : SC-CAMLR-XXXIII/BG/24 : Auteur(s): Delegations of New Zealand and the USA
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Reflection Paper on a Proposal for a CCAMLR Weddell Sea Marine Protected Area (WSMPA)
Abstract: This paper follows-up on a number of consultations undertaken during 2015 with CCAMLR ... Members on a proposal for the establishment of a marine protected area in the Weddell Sea (Weddell Sea ... , especially on management and research and monitoring (R&M) measures before a WSMPA proposal could to be ... ): Delegation of the European Union and its Member States Title: Reflection Paper on a Proposal for a CCAMLR ...
Meeting Document : CCAMLR-XXXIV/BG/37 : Auteur(s): Delegation of the European Union and its Member States
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Acquiring a ‘base datum of normality’ for a marine ecosystem: the Ross Sea, Antarctica
processes in a system where both top-down and bottom-up forcing are still intact. Elsewhere in Earth’s ... significant, natural top-down forcing for such a long time that it is a concept rarely considered by ... opportunity to understand the processes that take place in a healthy, complete marine ecosystem. Author(s): D ... . Ainley (USA) Title: Acquiring a ‘base datum of normality’ for a marine ecosystem: the Ross Sea ...
Meeting Document : WG-EMM-04/20 : Auteur(s): D. Ainley (USA)
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A feasibility study for stock assessment of D. mawsoni in the Ross Sea (Subares 88.1 and 88.2) using a tag and recapture experiment
Abstract: This paper reports on a feasibility study into a tag and recapture experiment for the ... fishery during the last 3 seasons. A good number of tag recoveries have been reported, mainly within the ... Jolly-Seber or variant estimators. The utility of this approach is investigated here by applying a Jolly ... -Seber estimator to simulated tagging data generated by an operating model over a range of assumed ...
Meeting Document : WG-FSA-SAM 03/10 : Auteur(s): K.J. Sullivan, N.W.McL. Smith, J. McKenzie and S.M. Hanchet (New Zealand)
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Preliminary assessment of mackerel icefish (Champsocephalus gunnari) in the vicinity of Heard Island and McDonald Islands (Division 58.5.2), based on a survey in March–April 2010, including a revised growth model
Abstract: A survey of mackerel icefish, Champsocephalus gunnari, was undertaken in Division ... of short-term annual yield in the 2010/2011 CCAMLR season. This paper provides a preliminary ... fishery in 2010/11. A new 2+ cohort has been detected, and it is expected that the fishery in 2010/11 will ... focus on this cohort. A new growth model is also estimated which shows an improved fit to observed sizes ...
Meeting Document : WG-FSA-10/12 : Auteur(s): D.C. Welsford (Australia)
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A proposal for a standardised survey for Antarctic toothfish in McMurdo Sound
Abstract: We propose to implement a random, depth-stratified vertical longline survey conducted ... abundance of Antarctic toothfish. A pilot season was carried out in 2014, where sampling gear and ... methodology for a standardised hook and line survey were trialled in McMurdo Sound. Data collected will be ... (number of stations sampled per season) needed to detect a moderate change in the abundance index is ...
Meeting Document : WG-FSA-15/33 : Auteur(s): S.J. Parker, S.M. Hanchet and S. Mormede (New Zealand)
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A critical re-examination of the evidence for a possible dependence of Weddell seals (Leptonychotes weddellii) on Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea, Antarctica
Weddell seals (Leptonychotes weddellii), but available evidence remains inconclusive as a result of both ... . As a new approach, we also estimate Weddell seal food requirements by considering nutritional quality ... energy requirements. The energy density of potential prey items (fish and invertebrates) covers a four ... -fold range. Nutritional analysis of Ross Sea prey suggests that toothfish may represent a unique high ...
Meeting Document : WG-EMM-13/28 : Auteur(s): R. Eisert, M.H. Pinkerton (New Zealand), S.D. Newsome and O.T. Oftedal (USA)
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Outline of a research program to investigate the abundance, abundance trends and stock structure of large whales in the Indo-Pacific region of the Antarctic, including a survey plan for the 2019/20 austral summer season
of a new non-lethal research program on whales and the ecosystem in the Indo-Pacific region of the ... Antarctic (JASS-A= Japanese Abundance and Stock structure Surveys in the Antarctic). The main research ... large whale species. JASS-A also has several secondary research objectives related to oceanographic ... two specialized vessels, during a tentative period of eight austral summer seasons. Analyses related ...
Meeting Document : WG-EMM-2019/68 : Auteur(s): Delegation of Japan