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1. ANALYSIS OF VARIABILITY OF KRILL SIZE AND FISH BY-CATCH IN JAPANESE KRILL FISHERY BASED ON SCIENTIFIC OBSERVER DATA

   fish, observer data sets on Japanese krill fishery from 1995 to 2008 were analyzed by using a ... hierarchical Bayesian model. The model was composed of multistage cluster units (i.e., years, subarea, vessels ... , and haul) based on a state-space model, which can separate biological process error in the population ... length and bycatch fish number, the parameters estimated by MCMC showed the variation among years ...

   Meeting Document : WG-EMM-11/39 : Autor(es): T. Okuda and M. Kiyota (Japan)

2. On the use of baited remote underwater video to study Antarctic toothfish distribution under the sea-ice: from data collection to processing

   of predictive variables, including an approach to account for bias in counting the number of ... and Italy, from 2015 to 2018 a series of BRUV samplings have been carried out from the fast ice of ... to obtain from the videos recorded information on abundance and size distribution related to a series ... individuals attracted to the bait. Because we are now focussed on developing the method, the results are ...

   Meeting Document : WG-EMM-2019/50 : Autor(es): D. Di Blasi, S. Canese, E. Carlig, L. Ghigliotti, S.J. Parker and M. Vacchi

3. Joint report on exploratory fishing in Divisions 58.4.1 and 58.4.2 between the 2011/12 and 2017/18 fishing seasons

   2018 will be submitted to WG-FSA-18. The summaries provided herein were generated using an R-Markdown ... Abstract:  Robust stock assessments and catch limits for Dissostichus mawsoni according to CCAMLR ... decision rules remain to be determined for Divisions 58.4.1 and 58.4.2, and precautionary management ... multi-member toothfish exploratory fishery research plan for these Divisions, including research ...

   Meeting Document : WG-SAM-18/35 Rev. 1 : Autor(es): Delegations of Australia, France, Japan, Republic of Korea and Spain

4. Population status of Ross Sea killer whales (Orcinus orca, Type C) in McMurdo Sound, Antarctica, based on photo-identification studies

   175 there annually. Despite high turnover of different whales between years, we used a Bayesian mark ... -recapture approach to identify a seasonal ‘resident’ population with an average annual abundance of 55 ... individuals resighted over 2-14 years. Contrary to recent reports that commercial overfishing of Antarctic ... McMurdo Sound, Antarctica, based on photo-identification studies Microsoft Word File:  emm-16-50.docx ...

   Meeting Document : WG-EMM-16/50 : Autor(es): R. Pitman, H. Fearnbach and J.W. Durban

5. Target strength studies on Antarctic silverfish (Pleuragramma antarcticum) in the Ross Sea

   Paper Title:  Target strength studies on Antarctic silverfish (Pleuragramma antarcticum) in the ... continental slope and shelf of the Ross Sea at depths from 30 to 120 m, during the Italian expeditions of 1997 ... /98, 2000 and 2004. The regression lines for estimating TS from nine experiments were: TS 38 ... main contribution to the scattering for small fish is from soft tissues and for larger sizes from hard ... . antarcticum). In situ measurements on free-swimming fish These measurements include two methods: the direct ... . With an appropriate sampling regime it can be expected that, on average, the inac- curacies of the ... coefficient m has been found to be close to 20 for a great many fish species (e.g. backscattering is ... Ancona Bay, Italy (43°37'N 13°28'E), near the RV Dallaporta, on which an acoustic laboratory was ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 75–104 : Autor(es): Azzali, M., I. Leonori, I. Biagiotti, A. De Felice, M. Angiolillo, M. Bottaro and M. Vacchi

6. Preliminary report of outcomes of the 2nd international workshop on the ICED Southern Ocean Sentinel, held in Hobart Australia 7–11 May 2012

   the discussion on strategies for measuring change in Southern Ocean marine ecosystems, including ship ... benchmarking Southern Ocean ecosystems in 2020 and for establishing routine activities for estimating change in ... Abstract:  The 2nd international workshop on the ICED Southern Ocean Sentinel was held at CCAMLR ... Headquarters on 7-11 May 2012 in Hobart, Australia, hosted by the Australian Antarctic Division and the ...

   Meeting Document : WG-EMM-12/59 : Autor(es): A. Constable (Australia)

7. Longline sink rates on a bottom autoline vessel in New Zealand: draft

   have quite noticeable effects on line sink rate for 20- 40 m either side of the attached weight. Given ... Abstract:  Longline sink rates were investigated using Time Depth Recorders on a bottom autoline ... the effect that adding weights to the line had on its sink rate. The vessel used Mustad autoline ... collected initially to give an information baseline. Further trials were then conducted using added weights ...

   Meeting Document : WG-FSA-98/51 : Autor(es): N.W. McL. Smith (New Zealand)

8. VME detection thresholds: preliminary results of a study on the case of the sea pens (Pennatulacea) of the CCAMLR sector 58.4.4b

   Abstract:  CCAMLR has defined Vulnerable Marine Ecosystems (VME) detection thresholds based on the ... CCAMLR SAM Working Group 2018. However, despite the important level of the catches, no VME detection ... threshold triggering out the establishment of an immediate fishing exclusion zone have been reached. Here ... , we present the preliminary results and some discussion elements of a study centered on the case of ...

   Meeting Document : WG-EMM-2019/52 : Autor(es): A. Martin and M. Eléaume

9. Vertical migrations of mackerel icefish (Champsocephalus gunnari) on the South Georgia shelf

   may be used for clarification of survey techniques used in stock assessment. For a number of years ... Paper Title:  Vertical migrations of mackerel icefish (Champsocephalus gunnari) on the South ... calculation of mackerel icefish biomass (Champsocephalus gunnari) from trawl survey data on the South Georgia ... shelf (Parkes et al., 1989) challenge the rationale for round-the-clock trawling and call for ... information obtained on vertical migrations of C. gunnari may be used for clarification of survey techniques ... used in stock assessment. For a number of years scientists of AtlantNIRO have been conducting trawl ... presents catch data obtained from research vessels fishing for commercial concentrations of C. gunnari on ... to the surface layers than to the bottom layers. An echo sounder was used to search for fish ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 3–14 : Autor(es): Frolkina, J.A. and V.I. Shlibanov

10. Feedback management pro forma based on WG-EMM 12/44

    and implements a negative feedback whose magnitude varies according to an observed status of two ... Abstract:  We present a candidate, Stage-2 feedback management strategy for consideration by WG ... -EMM. The strategy uses existing CEMP data and three simple decision rules for adjusting catch prior to ... on WG-EMM 12/44 Approval:  Approved Secretariat Workflow Status:  Content Approved ...

    Meeting Document : WG-EMM-15/33 : Autor(es): G. Watters and J. Hinke (USA)

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