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1. A potential feedback approach to ecosystem-based management: Model Predictive Control of the Antarctic krill fishery

   Control (MPC) to achieve objectives for a harvested species, its predators and the fishery, in a ... also useful for assessing the feasibility of candidate management policies or objectives, and ... area‐specific carrying capacity for these two areas, and the influx of the harvested species from the ... source of the harvested species for the remaining two areas. The biomass dynamics of the harvested ... based on the decision rule for the krill stock suggested by Butterworth et al. (1991) and later ... probability, Xp . The constraints imposed by the limits on uk and Δuk specify an allowable range and ...

   Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 119–137 : Autor(es): Hill, S.L. and M. Cannon

2. CCAMLR-XXX

   catch estimate for Patagonian toothfish Delegation of Australia CCAMLR-XXX/BG/19 30 years of krill ... forecast budget for 2013 Executive Secretary CCAMLR-XXX/05 Report on the independent review of CCAMLR’s ... CCAMLR-XXX/19 Notifications of South Africa’s intention to conduct an exploratory longline fisheries for ... the CCAMLR Financial Regulations Convener, SCAF-CG CCAMLR-XXX/30 Proposal for a general conservation ...

   Meeting

3. Revised proposal to continue the time series of research surveys to monitor abundance of Antarctic toothfish in the southern Ross Sea, 2016 and 2017

   the next two years, 2016 and 2017, is presented. The survey will continue to focus primarily on ... methods will remain the same as in previous years, and the number of sets will be retained at 45 sets for ... Abstract:  A research proposal to continue the southern Ross Sea sub-adult toothfish survey for ... . Following the recommendations of WG-FSA and WG-EMM, an additional secondary survey objective has been ...

   Meeting Document : WG-FSA-15/34 : Autor(es): S.M. Hanchet, S.J. Parker, S. Mormede and R.J.C. Currey (New Zealand)

4. Proposal to continue the time series of research surveys to monitor abundance of Antarctic toothfish in the southern Ross Sea, 2016–2017

   the next two years, 2016–2017, is presented. The survey will continue to focus primarily on estimating ... 2015 survey. As it is less critical to survey these larger sub-adult and adult toothfish on an annual ... basis, it is proposed that these two areas be surveyed in alternate years. Therefore, it is proposed to ... the same as in previous years, and the number of sets will be retained at 45 sets for the core strata ...

   Meeting Document : WG-SAM-15/45 : Autor(es): S.M. Hanchet, S.J. Parker, S. Mormede and R.J.C. Currey (New Zealand)

5. e-sc-xxviii-a10.pdf

   ... not occur over a time scale of 20–30 years. Therefore, where estimates of maximum longevity for the ... been observed 20 or 30 years post impact (Clark et al., in press). 3.10 The Workshop agreed that ... Article II of the CAMLR Convention provided the basis for Conservation Measure 22-06. 2.3 The Workshop ... the FAO International Guidelines for Management of Deep Sea Fisheries on the High Seas (2009) to application/pdf attached to:WS-VME-09

   Meeting Report : WS-VME-09

6. Length- and age-at-spawning of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea

   maturation stage by approximately May each year. The age at 50% spawning for females on the Ross Sea slope ... region is 16.6 years (95% CI 16.0–17.3) or 133.2 cm (95% CI 130.9–135.7) by length. On average, males ... spawn at a younger age with an A 50% of 12.8 years (95% CI 11.9–14.0) or 120.4 cm (95% CI 114.8–126.7 ... stage for at least one year. Individual oocytes are then recruited into the vitellogenic phase over at ... age at 50% spawning for females on the Ross Sea slope region is 16.6 years (95% CI 16.0–17.3) or ... assessment for D. mawsoni assumed an A50% of 9 years, corresponding to an L50% of 100 cm (95% range of ±15 ... for females (16.6 years) on the Ross Sea slope and at (12.8 years) for males in the Ross Sea. The ... L50% for the hindcast ogive. 0 10 20 30 40 0. 0 0. 2 0. 4 0. 6 0. 8 1. 0 Age (y) P ro po rti ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 53–73 : Autor(es): Parker, S.J. and P.J. Grimes

7. Preliminary appraisal of Antarctic fish selection by the 32/36 bottom trawl combined with various codends

   of both tape codends were much better. It was found that an optimum mesh size of this codend for ... material used for their construction, incorrectly chosen mesh size, and certain morphological features of ... some Antarctic fish, which make it difficult for them to escape from the codend. Selectivity properties ... selection of Antarctic icefish and bumphead notothenia ranges from 60 to 100 mm. For other Antarctic fish ... were much better. It was found that an optimum mesh size of this codend for selection of Antarctic ... calculated as a mean from 30 measurements. For investigations, only those tows were selected which ... , separately for various codends. On the basis of measurements of the length of all fish, separately for the ... - slightly over 50%. On South Georgia fishing grounds, the same was true for fish of up to 35 cm in length ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 1-48 : Autor(es): Zaucha, J.

8. e-sc-xx-a5-appH.pdf

   ... criterion is based on two themes, i.e. the relatively high abundance of split zones in the early years of ... that preparation method has an effect on precision, an analysis of bias plots (Figure 8) for each ... phenomenon, that has an effect on the extent of the sea-ice with a 4~5 year periodicity. Other examples ... APPENDIX H REPORT OF THE WORKSHOP ON ESTIMATING AGE IN PATAGONIAN TOOTHFISH (Center for Quantitative application/pdf attached to:WEAPT-01

   Meeting Report : WEAPT-01

9. Remotely-sensed vessel positioning and data reporting systemsApplication to the CCAMLR Convention Area

   use of data on vessel position and movement are also mentioned. A possible configuration for a CCAMLR ... Abstract:  This paper summarises the utility of transponders for fisheries management and compares ... the two most commonly used satellite-linked systems, with particular reference to their costs and ... vessel-tracking system is proposed, based on the use Immarsat-C transponders linked with Global ...

   Meeting Document : CCAMLR-XIII/11 : Autor(es): Secretariat

10. New CCAMLR SISO Observer Manuals and updated longline logbook

    Abstract:  This paper presents two new observer manuals for finfish and krill fisheries. The ... data collection for a focussed skate tagging programme in the Ross Sea, beginning in the 2020 season ... manuals include updated information on identifying and sexing target catch species, provide guidance on ... standard tasks and requirements for observers as well as supplementary information to aid data collection ...

    Meeting Document : WG-EMM-2019/75 : Autor(es): CCAMLR Secretariat

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