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1. Developing integrated assessments for Dissostichus eleginoides based on the CCAMLR precautionary approach

   Abstract:  This paper describes a possible method for implementing the precautionary approach in ... assessments of Dissostichus stocks when a number of different datasets are being integrated for estimating ... this paper but the methodology is laid out in such a way that alternative software solutions could be ... third step is to use the GYM to undertake a number of projection trials, determining the median pre ...

   Meeting Document : WG-FSA-SAM-05/16 : Author(s): I. Ball and A.J. Constable (Australia)

2. Investigation of bias in the mark–recapture estimate of toothfish population size at South Georgia

   tag placements and recapture effort, on bias in the Petersen estimate. It does so by constructing a ... encountered a high CPUE box and upwards in a low CPUE box so that they were retained in high CPUE boxes. The ... model incorporates the facility for releases by box over a number of years. The model performed as ... expected with test situations. It produced a near-perfect estimate of stock size when there was an ideal ...

   Meeting Document : WG-FSA-SAM-05/6 Rev. 1 : Author(s): D.J. Agnew, G.P. Kirkwood, J. Pearce and J. Clark (United Kingdom)

3. Coordinating approaches to incidental mortality arising from fisheries

   . CCAMLR has developed a comprehensive system for mitigation of seabird incidental mortality, but ... application of approaches to minimise by-catch needs to be consistent where possible across non-target taxa. A ... that need to be addressed based on a preliminary evaluation of risks. This would facilitate agreement ... on a program of work. Such an approach could provide the basis for a comprehensive and integrated ...

   Meeting Document : WG-FSA-03/71 : Author(s): A.J. Constable, C. Davies, A.T. Williamson, R. Williams and E. van Wijk (Australia)

4. Ecosystem modelling for the Antarctic krill fishery

   Abstract:  Euphausia superba Dana (Antarctic Krill) has been recognized as a key forage species in ... well as competitors for a common resource. In this context we aim to investigate whether the krill ... fishery and the top predators are competing for krill biomass. This is a cooperative pilot project led by ... University of Concepcion, Chile with the Fisheries Centre at University of British Columbia, Canada. In a ...

   Meeting Document : WG-EMM-01/65 : Author(s): T. Antezana, J. Cornejo, E. Bredesen, P. Faundez (Chile), A.W. Trites and T. Pitcher (Canada)

5. Trends in mean lengths and selectivities for Dissostichus eleginoides taken by longliners in Subarea 48.3

   Abstract:  At its last meeting, WG-FSA noted a declining trend in the mean lengths of toothfish ... also that this trend was halted in 2000. A GLM analysis of these data shows that both area and depth ... . The combined effects of these findings were examined in a set of preliminary analyses of length ... there was a consistent tendency for fish over 90-100 cm to have a lower relative selectivity than ...

   Meeting Document : WG-FSA-01/48 : Author(s): G.P. Kirkwood and D.J. Agnew (United Kingdom)

6. Preliminary analysis of seabird by-catch using CCAMLR observer data

   birds (9.4%). Data conformed most closely to a Delta distribution (many zero values and log-normal ... distribution of non-zero values) and were analysed using two Generalised Linear Models, a binomial model for ... presence/absence of seabird catches and a Gamma model for the magnitude of non-zero catches. Sparsity of ... data precluded analysis of seabirds at a taxon level more detailed than albatrosses and petrels ...

   Meeting Document : WG-FSA-99/28 : Author(s): D.J. Agnew and J.P. Croxall (United Kingdom)

7. Assessment models for Antarctic toothfish (Dissostichus mawsoni) in Subarea 88.2 SSRU 88.2E for the years 2002–03 to 2010–11

   resulted in a 30% higher estimate of initial biomass than for the 2009 base case. The main reason for this ... this model were 484 t. SSRU 88.2E has historically been assessed and managed as a separate area because ... appropriate to carry out a combined stock assessment based on SSRUs 88.2C–G. This combined stock assessment is ... developed in a separate paper.   Author(s):  S. Mormede, A. Dunn and S.M. Hanchet (New Zealand) Title ...

   Meeting Document : WG-FSA-11/44 : Author(s): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand)

8. ALLOCATING THE PRECAUTIONARY CATCH LIMIT FOR KRILL AMONGST THE SMALL-SCALE MANAGEMENT UNITS IN AREA 48: THE IMPLICATIONS OF DATA UNCERTAINTIES

   Abstract:  Over the past few years WG-EMM has been developing a management procedure for the krill ... catch limit among a set of small-scale management units. So far the Working Group has identified six ... - subdivision based on the distribution of historical catches). In recognising the need for a “staged ... fishing) until a future date. The remaining three options propose subdividing the catch limit according to ...

   Meeting Document : WG-EMM-08/12 : Author(s): P.N. Trathan and S.L. Hill (United Kingdom)

9. GROUNDFISH SURVEY IN CCAMLR SUB-AREA 48.3 IN APRIL 2008 WITH PRELIMINARY ASSESSMENT OF MACKEREL ICEFISH

   Abstract:  In April 2008 the UK undertook a bottom trawl survey of CCAMLR Sub-Area 48.3 on the FV ... (2003), the biomass of mackerel icefish was estimated to be 80,426 tonnes, with a lower 1-sided 95% CI ... in the NW South Georgia area. A preliminary short-term projection of the mackerel icefish stock was ... was successful. The icefish appeared to be dispersed, which is amenable to a random trawl survey ...

   Meeting Document : WG-FSA-08/28 : Author(s): M.A. Collins, R.E. Mitchell, C.E. Main, J. Lawson, J. Watts, J. Slakowski, L. Featherstone and O. Rzewuski (UK)

10. Entanglement of Antarctic fur seals (Arctocephalus gazella) in man-made debris at Signy Island, South Orkney Islands 1996/97

    was estimated that the incidence of entanglement was 0.33%. Data are compared with results from a ... packaging bands were the main entangling materials at both sites, a greater proportion of fur seals was ... was seen to have a neck collar loose enough to come off. Since 1991, 47 entanglements have been ... Islands. However, it is difficult to determine if this is a site specific difference or a product of ...

    Meeting Document : SC-CAMLR-XVI/BG/07 : Author(s): Delegation of the United Kingdom

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