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1. Development of the Patagonian toothfish (Dissostichus eleginoides) tagging program in Division 58.5.2, 1997–2014

   toothfish tagged and released, and 4925 recaptures. The data derived from this program has been valuable in ... estimating key population parameters for toothfish in this region, and have been used in the 2014 stock ... assessment (Ziegler, et al, 2014) in various ways including:  local abundance estimators;  natural mortality ... currently be used in an unbiased manner to estimate stock abundance. Developing spatially explicit models ...

   Meeting Document : WG-FSA-14/43 : Autor(es): D.C. Welsford, C. Péron, P.E. Ziegler and T.D. Lamb (Australia)

2. Progress by WG-EMM-STAPP in estimating krill consumption by air-breathing predators within CCAMLR areas

   Abstract:  This paper summarises progress by WG-EMM-STAPP in estimating krill consumption by air ... -breathing predators in CCAMLR management units. There have been significant advances in estimating krill ... consumption by pack-ice seals and penguins since the last update in 2011. Estimates of pack-ice seal abundance ... krill-consuming seal species, has been estimated in Areas 48 and 58. Large-scale estimates of breeding ...

   Meeting Document : WG-EMM-16/68 : Autor(es): C. Southwell and P. Trathan

3. Research plan for the 2017/18 toothfish fishery in Division 58.4.4b by Japan and France

   Abstract:  Japan and France made the next season’s (2017/18) research plan in research blocks ... 58.4.4b_1 and 58.4.4b_2 using the latest CCAMLR C2 and Observer data. The estimated median stock size in ... block 58.4.4b_1 and 58.4.4b_2 was 855.39 and 1120.40, tonnes respectively, in Chapman method considering ... tags released in the last three years as effective for the biomass estimation. The estimated median ...

   Meeting Document : WG-SAM-17/02 Rev. 1 : Autor(es): Delegations of Japan and France

4. Research plan for the 2017/18 exploratory longline fishery of D. mawsoni in Subarea 48.6 by South Africa and Japan

   Abstract:  South Africa and Japan made the next season’s (2017/18) research plan in Subarea 48.6 ... on 10 th May, 2017. The estimated median stock size in research block 48.6_2, 48.6_3, and 48.6_4 was ... 5657.54, 5162.26, and 8211.25 tonnes, respectively, in Chapman method considering tags released in the ... . The estimated median stock size in block 48.6_2, 48.6_3, and 48.6_4 was 801.17, 124.71, and 981.91 ...

   Meeting Document : WG-SAM-17/03 : Autor(es): Delegations of Japan and South Africa

5. Simulating performance of trend analysis for setting catch limits in exploratory toothfish research plans

   Abstract:  Catch limits for toothfish in research blocks were set for the 2017/18 season using a ... qualitative analysis of trends in biomass estimated in each research block and a series of simple decision ... high or low abundance, high or low uncertainty in biomass estimates, and for populations with ... increasing, stable, or decreasing trends in abundance. The trend analysis rules performed well given the ...

   Meeting Document : WG-SAM-18/23 : Autor(es): S. Hoyle, S. Parker, A. Dunn and S. Mormede

6. Pygoscelid penguins vulnerabilities to spatio-temporal changes of the krill fisheries in the Antarctic Peninsula

   Abstract:  Fast climate changes in the Antarctic Peninsula are reducing krill density, which, by ... its turn, is reflected in penguin population dynamics. The increased concentration of fishing ... activities in this area in the last two to three decades is believed to have feedbacked the impacts of ... penguin population monitoring to test this assumption. We found that fisheries in Antarctic Peninsula are ...

   Meeting Document : WG-EMM-2019/10 : Autor(es): L. Krüger, F. Santacruz, L. Rebolledo and C. Cárdenas

7. Revised input parameters and implications for the Antarctic toothfish (Dissostichus mawsoni) stock assessment in Subareas 88.1 and 88.2

   Abstract:  In this paper, we address a number of aspects of the model inputs and parameters of the ... Antarctic toothfish stock assessment for the Ross Sea fishery. In particular we review catch history, length ... -weight relationships, catch-at-length and catch-at age. In addition, we report some preliminary model ... runs that investigate the sensitivity of the 2006 stock assessment to changes in these model inputs and ...

   Meeting Document : WG-SAM-07/6 : Autor(es): A. Dunn and S.M. Hanchet (New Zealand)

8. Preliminary analyses of an ectoparasite Eubrachiella antarctica as a marker for stock discrimination of Antarctic toothfish in the Ross Sea

   antarctica as a marker for stock discrimination of Antarctic toothfish in the Ross Sea. New Zealand Ministry ... fins and in the buccal cavity of 621 large D. mawsoni (mostly 120-150 cm). Up to five D. mawsoni per ... set were examined for parasites in Small Scale Research Units (SSRUs) 88.1C, 88.2E and 88.2F; and two ... fish per set in SSRUs 88.1H- 88.1J. Up to 15 E. antarctica, one from each of the first fifteen sets in ...

   Meeting Document : WG-FSA-06/28 : Autor(es): P.J. Smith, A. McKenzie and L. Tubbs (New Zealand)

9. Proposal for a mark–recapture experiment to estimate toothfish population size in Subarea 48.4

   Abstract:  One UK vessel fished around the South Sandwich Islands (Subarea 48.4) in in July, 2005 ... in accordance with CM 41-03. During this time fish were tagged in order to start a mark-recapture ... programme to assess the toothfish population. Catch rates were similar to those experienced in Subarea 48.3 ... . The UK proposes to undertake a more extensive mark-recapture experiment in Subarea 48.4 over the 2006 ...

   Meeting Document : WG-FSA-05/57 : Autor(es): Delegation of the United Kingdom

10. Physical forcing in the southwest Atlantic: ecosystem control

    Abstract:  In the southwest Atlantic sector of the Southern Ocean, temporal variability in the ... temperature at South Georgia shows the presence of high levels of autocorrelation, with periodicity evident in ... anomaly data for the El Niño 4 region in the Pacific show that variability at South Georgia also reflects ... temperature fluctuations in the Pacific, with the Pacific leading South Georgia by approximately 3 years ...

    Meeting Document : WG-EMM-04/34 : Autor(es): P.N. Trathan, E.J. Murphy, J. Forcada, J.P. Croxall, K. Reid and S.E. Thorpe (United Kingdom)

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