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1. Meta-analysis of catch reporting in CCAMLR exploratory fisheries

   Abstract:  The Secretariat has prepared a meta-analysis of the target and by-catch reported in ... variation between gear type and area. However, it appears that the differences in reporting between Members ... that were identified in 2015 remain apparent in the data. Measures to improve the quality of bycatch ... data reported in CCAMLR fisheries may include the development of a detailed manual on by-catch sampling ...

   Meeting Document : WG-FSA-18/14 : Author(s): CCAMLR Secretariat

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

   model for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea (Subareas 88.1 and SSRUs 88.2A–B ... in a similar, though slightly higher, estimate of initial and current biomass as the 2005 base case ... ‘all vessels’ tagging data resulted in a much more optimistic assessment, but was due to the increased ... numbers scanned, but smaller increase in the reported numbers recaptured. It is likely that this ...

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

3. A review of rattail (Macrourus spp.) and skate by-catch and analysis of standardised CPUE, for the exploratory fishery in the Ross Sea (CCAMLR Subareas 88.1 and 88.2) from 1997/98 to 2004/05

   rattails (Macrourus spp.) and skates in the exploratory fishery for toothfish in the Ross Sea (CCAMLR ... from all vessels in the fishery from 1997/98 to 2004/05. The major factors influencing rattail bycatch ... , 88.1I, 88.1K and 88.2E) in depths from 600 to 1000 m, and there was an order of magnitude difference in ... shown a general increasing trend since 1998/99, with a peak in 2002/03. It was not possible to reliably ...

   Meeting Document : WG-FSA-05/24 : Author(s): S.L. Ballara and R.L. O’Driscoll (New Zealand)

4. Post-fledging and winter migration of Adélie penguins (Pygoscelis adeliae) in the Mawson region of east Antarctica

   chick left Magnetic Island near Davis station (68°33'S, 77°54'E) in February 1995 and was ... fast-ice or in the pack-ice. Fledglings had travelled between 536 and 1931 km to the west of their ... -set to transmit intermittently for the first five months and one day in four thereafter. Adult birds ... movements over the winter months were closely related to those of sea-ice in the region. Ice motion patterns ...

   Meeting Document : WG-EMM-02/47 : Author(s): J. Clarke and K. Kerry (Australia), C. Fowler (USA), R. Lawless, S. Eberhard and R. Murphy (Australia)

5. Annual variation in breeding biology of gentoo penguins, (Pygoscelis papua) at Bird Island, South Georgia

   later in 1987, when the breeding population decreased markedly. Factors involved in the timing of ... breeding are discussed. Within years egg-laying was highly synchronous: 95% of clutches were initiated in ... breeding population at Bird Island decreased by 20% and increased by 84% in successive years during the ... varied annually, and with age of the breeding bird, nest location and, in one year, with laying date ...

   Meeting Document : WG-CEMP-90/38 : Author(s): T.D. Williams (United Kingdom)

6. Further development of a spatially explicit population dynamics operating model for Antarctic toothfish in the Ross Sea region

   younger fish were found predominantly in southern areas of the Ross Sea shelf, mature fish on the slope ... and spawning fish in the northern areas of the Ross Sea region. Fits to the observations were ... generally good. Further investigations are recommended in order to further validate and refine this model ... data in areas not fished to date. In addition, further external validation diagnostics need to be ...

   Meeting Document : WG-SAM-13/35 : Author(s): S. Mormede, A. Dunn, S. Parker and S. Hanchet (New Zealand)

7. Spatial overlap of krill-dependent predators and krill fishery catches and a proposal for subdivision of catch limits in Subarea 48.1

   overlap in Area 48, with particular emphasis on Subarea 48.1. We used habitat utilization data for ... in Subarea 48.1. In general, overlap of summer and winter foraging habitats with krill catches in ... during the winter period, especially in the Bransfield Strait. Across years, predator distributions ... large differences in total catch in Subarea 48.1 suggests plausible local impacts on gentoo penguin ...

   Meeting Document : WG-EMM-14/36 : Author(s): J.T. Hinke, M.E. Goebel (USA), M.M. Santos (Argentina), P.N. Trathan (UK), W.Z. Trivelpiece and G.M. Watters (USA)

8. Preliminary evaluation of two feedback management strategies for the krill fishery in Subareas 48.1–48.3

   for the krill fishery will compromise the Commission’s ability to achieve the objectives in Article II ... management strategies in which the overall catch limit is dynamically redistributed among small scale ... ‑2) or (2) changes in penguin abundance. Relative to the case in which the overall catch limit is ... statically distributed among SSMUs in proportion to catches taken during 2009-2016, we found that the two ...

   Meeting Document : SC-CAMLR-XXXVII/BG/12 : Author(s): Delegation of the USA

9. Advances are urgently needed in providing regular estimates of krill stock status based on the available data

   Abstract:  CCAMLR currently manages the krill fishery in subareas 48.1 to 48.4 using an arbitrary ... measure (the trigger level) which was established in 1991 and is “not related to the status of the krill ... -species feedback loop that is widely used in fishery management elsewhere, including in other CCAMLR ... fisheries. This feedback loop regularly modifies management measures, such as catch limits, in response to ...

   Meeting Document : WG-EMM-2019/28 : Author(s): S. Hill, J. Hinke, N. Ratcliffe, P. Trathan and G. Watters

10. Revised proposal for the ongoing research plan on Patagonian toothfish (Dissostichus eleginoides) in Division 58.4.4b (2016/17–2020/21)

    this research plan in 2015 and a joint proposal was submitted for the first time in 2016 (WG-SAM-16/06 ... and improved the revised research plan presented in SC-CAMLR-XXXVII Annex 12 and redefined slightly ... the research objectives. The survey design has been amended to avoid sea pen hotspots in the eastern ... whales (O. orca) ecology and depredation ”) are addressed in two documents submitted at WG-SAM-19. We ...

    Meeting Document : WG-FSA-2019/64 : Author(s): Delegations of Japan and France

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