Search results
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Developing and applying a general abundance estimator for land-based predator surveys: Adélie penguins as a case study
Abstract: The development of a general estimator of abundance would facilitate a standardised ... approach to regional and circum-Antarctic surveys of land-based predators. Such a generalised estimator is ... abundance of Adélie penguins at regional scales in Antarctica, given a range of logistical scenarios and ... related survey designs. Author(s): C. Southwell (Australia) Title: Developing and applying a general ...
Meeting Document : WG-EMM-04/56 : Author(s): C. Southwell (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. (1991) relating potential krill yield to a pre ... on Krill. The most important of these extensions is integration over the ranges of uncertainty for a ... below various fractions of its median pre-exploitation level, as a function of the fraction of the ... biomass estimate which is set as the catch for a 20-year period. Three alternative fishing seasons are ...
Meeting Document : WG-KRILL-92/04 : Author(s): D.S. Butterworth, G.R. Gluckman and S. Chalis (South Africa)
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A brief review of information relevant to the establishment of a Krill Research Zone within the proposed Ross Sea Region Marine Protected Area
Resources meeting in 2015, New Zealand and the United States introduced a revision to the proposed Ross Sea ... Region Marine Protected Area (RSRMPA) that included the addition of a Krill Research Zone (KRZ). A ... central aim of the proposed KRZ is to enhance research opportunities within the RSRMPA. To provide a ... , focusing primarily on krill and krill-dependent predators. Here we provide a summary of that review, which ...
Meeting Document : WG-EMM-16/49 : Author(s): E.S. Klein and G.M. Watters
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A revised estimate of short-term yield for the mackerel icefish (Champsocephalus gunnari) off Heard Island based on a trawl survey in 1998
Abstract: A random stratified trawl survey of Mackerel icefish in 2 populations (Plateau and ... Shell Bank) in the vicinity of Heard Island enabled a revised estimate of yield for the coming 2 seasons ... cohorts are still sufficiently strong to provide for a yield greater than estimates of the long term ... estimate of a long term precautionary level and be maintained thereafter unless a further survey again ...
Meeting Document : WG-FSA-98/54 : Author(s): A. Constable and D. Williams (Australia)
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The error of the biomass estimate as a function of survey parameters and the statistics of a density field of krill aggregations
estimate (by means of a survey) on statistical characteristics of fish concentration density field under ... methods of calculus of probabilities; biomass estimate is determined as a product of average density for ... a posteriori estimation of error made when calculating biomass, and for survey planning on the basis ... of a priori estimates of statistical characteristics of concentration density field. They might make ...
Meeting Document : SC-CAMLR-VI/BG/39 : Author(s): Z.I. Kizner (USSR)
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A nonparametric algorithm to model movement between polygon subdomains in a spatially explicit ecosystem model
part of the modelling effort. In marine applications, a flow field grid describing the water movement ... large computational costs and difficult communication between model layers. In this paper, a simple and ... biomass distribution in comparison to a grid-scale model. A nonparametric description of inter-polygon ... both in artificial and realistic scenarios. Author(s): T. Lenser and A. Constable (Australia) Title ...
Meeting Document : WG-EMM-06/35 : Author(s): T. Lenser and A. Constable (Australia)
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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 : Author(s): R. Williams, A. Constable, T. Lamb and E. van Wijk (Australia)
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Development of a compliance evaluation procedure (DOCEP) Report of 2010/11 intersessional work and proposal for a CCAMLR compliance evaluation procedure
Abstract: The primary objective of CCAMLR’s Development of a Compliance Evaluation Procedure ... (DoCEP) is to develop a standard evaluation procedure to evaluate performance of vessels with ... intersessional working group. In the intervening period, there has been a DoCEP workshop, held in Bergen in ... proposes a compliance model for discussion in SCIC and the Commission. Author(s): Convener, DOCEP Title ...
Meeting Document : CCAMLR-XXX/31 : Author(s): Convener, DOCEP
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A proposal for a Krill Ageing Inter-laboratory Calibration Workshop
. Information on krill age is fundamental to establishing an accurate growth curve and to calculate a ... recruitment index, the parameters for a GYM to estimate a sustainable yield (γ) (WG-EMM-19 Report Para 4.27 ... ). The WG-EMM 2019 recommended that the Scientific Committee identify resources to support a workshop to ... . Author(s): Delegations of Australia, China, Japan, Norway and the USA Title: A proposal for a Krill ...
Meeting Document : SC-CAMLR-38/13 : Author(s): Delegations of Australia, China, Japan, Norway and the USA
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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 : Author(s): D.S. Butterworth, G.R. Gluckman, R.B. Thomson and S. Chalis (South Africa)