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1. Report on bottom fisheries and vulnerable marine ecosystems: draft template and workplan

   Abstract:  The WG-FSA Subgroup on VMEs was tasked with providing a draft template of a Report on ... Vulnerable Marine Ecosystems to WG-EMM and WG-FSA in 2010. This paper provides a draft template, including ... Scientific Committee and its working groups have been embedded within this structure in order to give them a ... arise from WG-FSA. It is envisaged that, following comments by WG-EMM, a draft report will be generated ...

   Meeting Document : WG-EMM-10/15 : Author(s): WG-FSA Subgroup on VMEs

2. Using outputs from spatial population models of Antarctic toothfish in the Ross Sea region to investigate potential biases in the single population model

   Abstract:  We present a method to evaluate potential biases and uncertainty in the tagging ... were then used in a single area stock assessment model derived from the stock assessment model of ... historical footprint of the fishery. However, the results when using a similar model that allowed for fish to ... provide a useful tool to evaluate potential bias and uncertainty in our understanding of the stock ...

   Meeting Document : WG-FSA-12/45 : Author(s): S. Mormede and A. Dunn (New Zealand)

3. Physical and behavioural influences on larval fish retention: contrasting patterns in two Antarctic fishes

   retention of the planktonic stages (eggs and larvae) of marine fish can play a key role in the maintenance ... of adult stocks. Here we use a numerical modelling approach to examine the influence of oceanographic ... larvae was predicted to be 5.3%, considerably lower than that of C. gunnari (31.3%), a difference related ... contribution to overall retention from spawning sites on the southwest South Georgia shelf. In addition, a ...

   Meeting Document : WG-FSA-12/P10 : Author(s): E.F. Young, J. Rock, M.P. Meredith, M. Belchier, E.J. Murphy and G.R. Carvalho

4. New possibilities of krill-dependent indicator species monitoring – UAV survey in Subarea 48.1

   34.51 km 2. Images were taken with digital SLR Canon 700D, Nikon D5100, Canon T5i 700D with a 35mm ... objective lens. Flights altitude at 350 – 550 m AGL (Above Ground Level) allowed images to be taken with a ... software. In selected colonies a comparison with the results of measurements taken at the same time from ... distribution of krill-depended indicator species in Subarea 48.1. Author(s):  M. Korczak-Abshire, A. Zmarz, M ...

   Meeting Document : WG-EMM-17/03 : Author(s): M. Korczak-Abshire, A. Zmarz, M. Rodzewicz, R. Storvold, M. Kycko, I. Karsznia, A. Kidawa and K.J. Chwedorzewska

5. Preliminary assessment models of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea including data from the 2005/06 season

   in a similar, though slightly higher, estimate of initial and current biomass as the 2005 base case ... modifying the estimates from the models, suggesting that the new data had a similar pattern to that of ... ‘all vessels’ tagging data resulted in a much more optimistic assessment, but was due to the increased ... a more optimistic estimate of B0. However, as the changes in growth, length-weight, and M all imply ...

   Meeting Document : WG-FSA-SAM-06/11 : Author(s): Dunn, A. & Hanchet, S.M.

6. 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)

7. 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)

8. 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)

9. 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)

10. 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)

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