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1. Theoretical considerations for estimating the density of cohorts and mean recruitment of Patagonian toothfish (Dissostichus eleginoides) based on research trawl survey data

   assessing the long-term yield for toothfish fisheries in CCAMLR uses estimates of density of juvenile ... toothfish derived from research trawl surveys as an estimate of absolute abundance of recruitment to the ... fishery. At the 2003 meeting of WG-FSA a number of inconsistencies were identified in the estimation of ... the recruitment series for Subarea 48.3. In light of this, the Scientific Committee agreed that there ...

   Meeting Document : WG-FSA-04/92 : Автор(ы): C.R. Davies, E.M. van Wijk and A.J. Constable (Australia)

2. Maximum entropy reconstruction of stock distribution and inference of stock density from line-transect acoustic survey data

   distribution from acoustic line-transect data. MaxEnt is founded on the bedrock of probability theory and ... allows the most efficient possible use of known data in the inference process. The method takes explicit ... account of spatial correlation in the observed data and seeks to reconstruct a distribution of density ... maximized. The method is iterative and uses the Bayesian approach of evaluating the posterior probability of ...

   Meeting Document : WG-EMM-02/35 : Автор(ы): A.S. Brierley, S.F. Gull and M.H. Wafy (United Kingdom)

3. Utilising data from ecosystem monitoring for managing fisheries: development of statistical summaries of indices arising from the CCAMLR Ecosystem Monitoring Program

   parameters. The paper is divided into four main parts. The first part develops the proposed method of forming ... Abstract:  A potential method is presented for combining data collected as part of the CCAMLR ... ecosystem monitoring program (CEMP) into a single index for each of predator, prey and environmental ... summary indices, which is based on the usual theory of multivariate statistics and takes into account the ...

   Meeting Document : WG-EMM-00/14 Rev. 1 : Автор(ы): W. de la Mare and A. Constable (Australia)

4. A model at the level of the foraging trip for the indirect effects of krill (Euphausia superba) fisheries on krill predators

   Abstract:  We present a model at the level of the foraging trip for the effects of a fishery on ... . The model involves: (i) the description of the biomass and spatial distribution of krill; (ii) the ... effects of the fishery on the krill; (iii) the description of penguin breeding; and (iv) the indirect ... effects of the fishery on penguin reproduction and survival. The objective is to make relative comparisons ...

   Meeting Document : WG-EMM-98/48 : Автор(ы): M. Mangel and P.V. Switzer (USA)

5. OTOLITH-BASED AGEING OF THE PATAGONIAN TOOTHFISH (DISSOSTICHUS ELEGINOIDES) FOR THE HEARD AND MCDONALD ISLANDS: MODELLING FIXED AND RANDOM READER ERROR USING MULTIPLE READINGS OF A REFERENCE COLLECTION

   resulting from the imprecision of age determination using annual ring counts from otoliths. This paper ... assessment using repeat readings by 4 readers of a set of 203 reference otoliths sampled from the HIMI ... fishery. The methods of sampling, preparing, reading, and modelling random reader error for this reference ... set of otoliths is described. A total of 933 readings were taken and errors were defined as the ...

   Meeting Document : WG-FSA-09/21 : Автор(ы): S.G. Candy, G.B. Nowara, D.C. Welsford and J.P. McKinlay (Australia)

6. OTOLITH-BASED AGEING OF THE PATAGONIAN TOOTHFISH (DISSOSTICHUS ELEGINOIDES) FOR THE HEARD AND MCDONALD ISLANDS: MODELLING FIXED AND RANDOM READER ERROR USING MULTIPLE READINGS OF A REFERENCE COLLECTION

   resulting from the imprecision of age determination using annual ring counts from otoliths. This paper ... assessment using repeat readings by 4 readers of a set of 203 reference otoliths sampled from the HIMI ... fishery. The methods of sampling, preparing, reading, and modelling random reader error for this reference ... set of otoliths are described. A total of 933 readings were taken and errors were defined as the ...

   Meeting Document : WG-SAM-09/07 : Автор(ы): S.G. Candy, G.B. Nowara, D.C. Welsford and J.P. McKinlay (Australia)

7. Some specific characteristics of Dissostichus eleginoides biology in the vicinity of the Kerguelen Islands (Division 58.5.1)

   present paper. Regular direct distribution of size groups D. eleginoides in depth range within the fishing ... Abstract:  For recent years Dissostichus eleginoids is the main target species of trawling and ... long-line fisheries in the vicinity of the Kerguelen Islands. Results of research made by the author on ... area on the northern slope of shelf was revealed. Difference in feeding spectrum of these groups was ...

   Meeting Document : WG-FSA-96/16 : Автор(ы): Pshenichnov, L.K.

8. Preliminary analyses of data collected during experimental phases of the 1994/95 and 1995/96 Antarctic crab fishing seasons

   Abstract:  Data collected from the FN American Champion during Phases 1 and 2 of the experimental ... generalized additive models show that the density of fishable P. spinosissima is highest off the northern ... coast of South Georgia and at depths between about 100 and 300 fathoms. The Phase 1 results suggest that ... it would not be appropriate to extrapolate local estimates of abundance to the whole of Subarea 48.3 ...

   Meeting Document : WG-FSA-96/34 : Автор(ы): Watters, G.

9. CCAMLR ecosystem monitoring program standard methods: determination of sex of Adelie penguins

   Abstract:  The suggestion that sex of Adélie penguins, Pygoscelis adeliae, might be assigned by ... observing which member of the pair (the male) takes the first long incubation shift (Anon. 1991) was ... examined for each of the 1990–91, 1991–92 and 1992–93 breeding seasons. There was an 8- or 9-day period ... when more than 90% of the incubating birds were male and a 6- or 7-day period when more than 90% of the ...

   Meeting Document : WG-CEMP-94/08 : Автор(ы): K.R. Kerry, J.R. Clarke and G.D. Else (Australia)

10. Development of a fine-scale model of land-based predator foraging demands in the Antarctic

    Abstract:  The CCAMLR Secretariat has been requested to provide annual calculations of the catch ... of krill within the critical period-distance of land-based predators in Subareas 48.1 and 48.2 (100km ... from colonies, December- March). This index of the overlap of predators and the fishery is unsuitable ... for a number of reasons. An alternative method of calculating an index of fishery-predator interaction ...

    Meeting Document : WG-Joint-94/08 : Автор(ы): D.J. Agnew and G. Phegan (Secretariat)

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