Search results
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Proposal for a CCAMLR-sponsored research survey to monitor abundance of pre-recruit Antarctic toothfish in the southern Ross Sea
locations in different years, making it impossible to develop a consistent time series that would monitor ... that a time series of recruitments from a well designed longline survey could be a useful input into a ... stock assessment model and requested members develop a pre-recruit survey design (SC-CAMLR-XXIX, para ... . 3.185). This paper presents a proposal for a CCAMLR sponsored research survey in response to the ...
Meeting Document : SC-CAMLR-XXX/07 : Author(s): Delegation of New Zealand
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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 : Author(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 : Author(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 : Author(s): A. Constable, M. Guest, D. Welsford (Australia), P. Koubbi (France) and L. Weragoda (Australia)
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Proposal for a CCAMLR Compliance Evaluation Procedure
the Development of a Compliance Evaluation Procedure Group, Australia coordinated intersessional work ... on developing a compliance evaluation procedure. Australia has developed a draft conservation measure ... proposing a CCAMLR Compliance Evaluation Procedure (CEP), presented at Attachment A. The purpose of the ... proposed CCAMLR CEP is to provide a formal mechanism for the assessment of Members' compliance against ...
Meeting Document : CCAMLR-XXXI/29 : Author(s): Delegation of Australia
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A generalised model for evaluating yield and the long term status of fish stocks under conditions of uncertainty
Abstract: This paper presents a flexible structure for a general yield model, which provides ... fishing on the estimates of yield per recruit. Also, it can be used to evaluate the performance of a stock ... under a specified catch regime. The model uses an adaptive Runge-Kutta procedure to evaluate stock ... trajectories and catch rates over a simulation period. In particular, this procedure calculates catches over ...
Meeting Document : WG-FSA-95/41 : Author(s): de la Mare, W.K., Constable, A.J.
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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 : Author(s): N.A. Hill, S.D. Foster, G. Duhamel, D. Welsford, P. Koubbi and C.R. Johnson
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Fish Heaven: a Monte Carlo, spatially explicit single species fishery model for the testing of parameter estimation methods
Abstract: Fish Heaven is a simple spatially explicit age structured fish model, containing the ... basic features of standard fish modeling with a number of optional extras. It was designed within an ... object oriented framework to allow for the possible extension in a number of directions. In particular it ... various plausible spatial structures of fish stock. The model has a simple age and space structured ...
Meeting Document : WG-FSA-00/36 : Author(s): I. Ball and A. Constable (Australia)
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Reduced bait loss and bycatch of seabirds in longlining by using a seabird scarer
Abstract: Although longlining is regarded as a highly conservation oriented method of fishing ... , bycatch of seabirds on longlines is a problem in certain seasons and areas. Birds feeding on the bait ... eventually give high mortalities considering the large amounts of hooks used. Both from a fishery and bird ... conservation point of view there is a strong incentive to solve this problem. This paper describes trials with ...
Meeting Document : WG-IMALF-94/09 : Author(s): S. Løkkeborg and Å. Bjordal (Norway)
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Results of a CCAMLR sponsored research survey to monitor abundance of subadult Antarctic toothfish in the southern Ross Sea, February 2013
Abstract: At its 2011 meeting, the Scientific Committee agreed that a time series of relative ... abundance from a well-designed survey could be a useful input into the Ross Sea stock assessment model. The ... second survey in the time series. The objectives of this second survey were: To carry out a longline ... survey to monitor subadult toothfish in the southern Ross Sea (strata A–C) using standardised gear in a ...
Meeting Document : WG-SAM-13/32 : Author(s): S.J. Parker, S.M. Hanchet, S. Mormede, A. Dunn (New Zealand) and R. Sarralde (Spain)