Résultats de la recherche
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THE RISKS OF NOT DECIDING TO ALLOCATE THE PRECAUTIONARY KRILL CATCH LIMIT AMONG SSMUS AND ALLOWING UNCONTROLLED EXPANSION OF THE KRILL FISHERY UP TO THE TRIGGER LEVEL
might be incurred by not deciding on such an allocation (i.e., a risk assessment of status quo ... management) be undertaken. We used the same methods applied by the WG-EMM in 2008, including averaging ... until a feedback approach to management of the krill fishery can be implemented; ii) agree a new trigger ... allocation has met the "burden of proof" that would be required for decision making. Author(s ...
Meeting Document : WG-EMM-09/12 : Auteur(s): G.M. Watters (USA), S. Hill (United Kingdom), J.T. Hinke (USA) and P. Trathan (United Kingdom)
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Escapement of elephant seal prey in the Heard Island fishery for Dissostichus eleginoides
could be reliably identified as being from toothfish. There appeared to be three pairs among the seven ... is unclear given the small number of otoliths that are of sufficient quality to be identified ... 2-6 years are likely to be vulnerable, to some extent, to predation by Elephant seals. The ...
Meeting Document : WG-EMM-97/42 : Auteur(s): Slip, D., Constable, A.J., de la Mare, W.K., Williams, R.
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Review of the use of survey data and length-at-age models in the assessment of Dissostichus eleginoides in the vicinity of Heard Island and McDonald Islands (Division 58.5.2)
cohorts assumed to be represented in the length density data. Assuming survey design produces unbiased ... estimates of length density, we suggest that best estimates of cohort abundance will be achieved when ... abundance of cohorts present in any survey year such as could be derived through an age length key, and ... estimates were found to be most sensitive to the estimated recruitment series interacting with the estimate ...
Meeting Document : WG-FSA-SAM-06/15 : Auteur(s): D.C. Welsford, A.J. Constable and G.B. Nowara (Australia)
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Developing research on Antarctic krill to facilitate the development and updating of feedback management procedures
Abstract: Antarctic krill fisheries have the potential to be in the top 10 fisheries of the world ... types of data that can be realistically obtained and monitored on the productivity of the ecosystem and ... (www.iced.ac.uk). Here we report on planned and proposed ICED activities that are relevant to krill that will be ... of interest to CCAMLR scientists and suggest that development of future joint activities would be of ...
Meeting Document : WG-EMM-13/12 : Auteur(s): E.J. Murphy, R.D. Cavanagh (United Kingdom), A. Constable (Australia), E.H. Hofmann (USA), S.L. Hill, N.M. Johnston, P.N. Trathan and J.L. Watkins (United Kingdom)
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Revised research plan for the 2013/14 exploratory longline fishery of Dissostichus spp. in Division 58.4.3a
sizes turned out to be larger in many blocks and smaller in a few blocks over the data poor-fisheries ... this reason, we propose the mitigation rule so that 50% of lines are required to be separated by not ... less than 3 n miles from each other but the rest of lines can be set freely between the separated lines ... . In this way, over-concentration of catch and effort can be avoided while reducing the inconveniences ...
Meeting Document : WG-FSA-13/40 : Auteur(s): Delegation of Japan
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Establishing time-limited Special Areas for Scientific Study in newly exposed marine areas following ice shelf retreat or collapse in Subarea 48.1, Subarea 48.5 and Subarea 88.3 – Clarifications and options to further develop the 2015 proposal
would be a moratorium on all fishing activities, except for scientific research fishing activities ... agreed by most Members to be an appropriate and practicable response to an important issue. However, a ... Scientific Study could be established, taking into account the points raised by the Scientific Committee and ... advice received from the Working Group, a revised Conservation Measure will be developed and submitted to ...
Meeting Document : WG-EMM-16/27 : Auteur(s): S. Grant and P. Trathan
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Joint research proposal for the Dissostichus spp. exploratory fishery in East Antarctica (Divisions 58.4.1 and 58.4.2) by Australia, France, Japan, Republic of Korea and Spain
rules remain to be determined for these Divisions. Multiple research plans are currently in place by ... plan to be presented by all proponents of research in Divisions 58.4.1 and 58.4.2 to WG-FSA-16 (WG-SAM ... -16 para. 3.12). The Working Group also requested that measurable research milestones be developed to ... and genetic approaches will be used to develop stock assessments and inform the necessary ...
Meeting Document : WG-FSA-16/29 : Auteur(s): Delegations of Australia, France, Japan, Republic of Korea and Spain
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Scientific contribution to the 2016 review of Conservation Measure 51-07: Part 2 – outcomes from the application of the risk assessment framework for distributing the krill trigger level in Area 48
risks of disproportionate local effects of the krill fishery. It can be used to readily explore the ... here provide the input needed for the review of CM51-07 and the means by which further scenarios may be ... fishing, which may be occurring at present because of the much larger catch possible under CM51-07 than ... the baseline would indicate would be appropriate. This is consistent with the earlier findings of ...
Meeting Document : WG-FSA-16/48 Rev. 1 : Auteur(s): A. Constable (on behalf of the e-group on CM 51-07 WG-EMM review)
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Demersal finfish distribution, abundance and their biological characteristics in Statistical Subareas 48.1 (northern part) and 48.2 (2018–2020)
-16 and WF-FSA-16, a revised proposal for a random, stratified trawl survey to be undertaken in ... -380 m, 381-440, and 441-500 m). Sampling will be conducted using bottom trawl nets, with stations in ... standing stock biomass of fish resources will be determined using the delta-lognormal maximum likelihood ... estimator. Also, demersal habitats and biological data will be collected routinely on each station: total ...
Meeting Document : WG-SAM-17/18 : Auteur(s): Delegation of Chile
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Demersal finfish distribution, abundance and their biological characteristics in Statistical Subareas 48.1 (northern part) and 48.2 (2018–2020)
-16 and WF-FSA-16, a revised proposal for a random, stratified trawl survey to be undertaken in ... -380 m, 381-440, and 441-500 m). Sampling will be conducted using bottom trawl nets, with stations in ... standing stock biomass of fish resources will be determined using the delta-lognormal maximum likelihood ... estimator. Also, demersal habitats and biological data will be collected routinely on each station: total ...
Meeting Document : WG-FSA-17/28 : Auteur(s): Delegation of Chile