Résultats de la recherche
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AN ECOSYSTEM-BASED MANAGEMENT PROCEDURE FOR KRILL FISHERIES: A METHOD FOR DETERMINING SPATIALLY-STRUCTURED CATCH LIMITS TO MANAGE RISK OF SIGNIFICANT LOCALISED FISHERIES IMPACTS ON PREDATORS.
assessment model, a decision rule for determining local scale catch limits based on a harvest strategy and a ... single-species assessment of yield, and a method for implementing the procedure. The decision rule for ... setting catch limits for a given harvest strategy has a straight forward expression of the target ... of predator-prey dynamics beyond that evident in the data. It is a natural extension of the current ...
Meeting Document : WG-SAM-08/16 : Auteur(s): A. Constable and S. Candy (Australia)
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An ecosystem-based management procedure for krill fisheries: a method for determining spatially-structured catch limits to manage risk of significant localised fisheries impacts on predators
assessment model, a decision rule for determining local scale catch limits based on a harvest strategy and a ... single-species assessment of yield, and a method for implementing the procedure. The decision rule for ... setting catch limits for a given harvest strategy has a straight forward expression of the target ... of predator-prey dynamics beyond that evident in the data. It is a natural extension of the current ...
Meeting Document : WG-EMM-15/36 : Auteur(s): A. Constable and S. Candy (Australia)
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A simulation study of krill fishing by an individual Japanese trawler
Abstract: A model is set up for the operation (which includes both searching and fishing) of a ... Japanese krill trawler over a half-month period, and the output is compared to statistics from a sample of ... biomass in a 600 n. mile square oceanic sector might decline by 50%. In most cases there is essentially no ... response of the index, or a response rather smaller in relative magnitude than the biomass decline. Catch ...
Meeting Document : SC-CAMLR-VI/BG/38 : Auteur(s): D.S. Butterworth (United Kingdom)
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Developing a penguin tracking database to help determine their most important foraging areas
Abstract: In late 2012 SCAR, BirdLife and BAS developed a successful proposal (to the UK Darwin ... . The database will have a web-based user interface that will allow data holders to submit data and ... attach a range of access levels; access may be granted only to the data holder, to a wider group, or to a ... general public domain. A penguin database (built along analogous lines and interoperable with the BirdLife ...
Meeting Document : WG-EMM-13/18 : Auteur(s): M. Hindell (SCAR), B. Lascelles (BirdLife) and P. Trathan (United Kingdom)
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A proposal for compiling information, assessments and science that underpin established CCAMLR Marine Protected Areas and provide the basis for ongoing management, science and review: an MPA Report
Conservation Measure 91-04 provides the necessary guidance to the Commission for formulating a conservation ... measure for a CCAMLR Marine Protected Area and indicates a number of elements where advice may be given by ... the Scientific Committee. We propose that a method is needed for consolidating and maintaining that ... advice in a readily accessible document, which can then form the basis for review, refinement and ...
Meeting Document : WG-EMM-12/49 : Auteur(s): A. Constable, M. Guest, D. Welsford (Australia), P. Koubbi (France) and L. Weragoda (Australia)
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Model-based mapping of assemblages for ecology and conservation management: A case study of demersal fish on the Kerguelen Plateau
Abstract: Quantifying biological assemblages and their environment is a fundamental, yet ... statistically challenging task in conservation ecology. Here we use a recently-developed approach called Regions ... ecologically significant region of the Southern Ocean to a) gain ecological and management insights and b ... ) evaluate the utility of the new method for ecoregionalisation. The RCP approach is a multi-species, model ...
Meeting Document : WS-SM-18/P02 : Auteur(s): N.A. Hill, S.D. Foster, G. Duhamel, D. Welsford, P. Koubbi and C.R. Johnson
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An overview of a large ecosystem survey of the southwest Indian Ocean sector of the Southern Ocean (CCAMLR Division 58.4.2)
, which was designed around an acoustic biomass survey for krill and a large-scale oceanographic survey ... . The survey is intended to produce a new estimate of krill biomass (B0) for this Division so that a ... revised precautionary catch limit can be established by CCAMLR. The survey utilised a standardised design ... adjacent CCAMLR Division 58.4.1 which collected information on a wide range of ecological parameters. The ...
Meeting Document : WG-EMM-06/15 : Auteur(s): S. Nicol, S. Kawaguchi, T. Jarvis, G. Williams, N. Bindoff, D. Thiele (Australia), J. Schwarz (Germany), A. Davidson, S. Wright, J. Gedamke and P. Thompson (Australia)
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Detection of systematic change in Adélie penguin foraging trip duration: consequences of high inter-annual variability and usefulness of ice cover as a covariate
Abstract: Power analyses were carried out using a 12 year data set from the Béchervaise Island ... change were investigated: 1) change occurring at a constant rate after a certain point in time and 2) a ... the latter form could be more quickly and powerfully detected at a range of effect sizes than could ... three foraging trips each were required to detect a 35% step increase in foraging trip duration after ...
Meeting Document : WG-EMM-05/22 : Auteur(s): J. Clarke, C. Southwell and L.M. Emmerson (Australia)
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A possible framework in which to consider plausible models of the Antarctic marine ecosystem for evaluating krill management procedures
Abstract: CCAMLR requires an assessment method for recommending a subdivision of the krill catch ... agreed workplan for developing a management procedure includes the evaluation of candidate management ... procedures in a simulation framework, using plausible models of the Antarctic marine ecosystem. This paper ... develops a framework for erecting such models. It is divided into three main parts, addressing different ...
Meeting Document : WG-EMM-04/24 : Auteur(s): A. Constable (Australia)
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Research plan for the exploratory longline fishery for Dissostichus spp. in 2012/13 in Division 58.4.3a (this is a revision of WG-SAM-12/14)
Abstract: In 2011/2012, a French vessel conducted its first exploratory fishing campaign in ... division 58.4.3a. In order to achieve a robust stock assessment that would provide advice on catch limits ... years. This paper is a revised proposal of WG-SAM-12/14 encouraged by 2012 SAM working group for a ... detailed catch, effort and biological data with a nearly same survey design as in the 2012. It will include ...
Meeting Document : WG-FSA-12/29 : Auteur(s): A. Rélot-Stirnemann (France)