Search results
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Preliminary assessment of Patagonian toothfish, Dissostichus eleginoides, in the vicinity of Heard Island and McDonald Islands (Division 58.5.2), based on a survey in May–June 2006 using the Generalised Yield Model
Abstract: A survey of Patagonian toothfish, Dissostichus eleginoides, was undertaken in Division ... 58.5.2 in the vicinity of Heard Island in May-June 2006 to provide the information for an assessment of ... short-term annual yield in the 2006/2007 CCAMLR season. This paper provides a preliminary assessment of ... length density data from the 1999 survey ii) the exclusion of year classes 6+ which have been included in ...
Meeting Document : WG-FSA-06/45 Rev. 1 : Author(s): D.C. Welsford, A.J. Constable, T. Lamb and T. Robertson (Australia)
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On the future revision of the Conservation Measure 51-07 (2009) Interim distribution of the trigger level in the krill fishery in Statistical Subareas 48.1, 48.2, 48.3 and 48.4
subdivision in Area 48. These uncertainties are enhanced by inconsistent state of exact krill catch data in ... catch limit in Statistical Area 48 so as to ensure that land-based predators are not affected by fishing ... comprehensive consideration and revision CM51-07(2009) in the 2011 CCAMLR Meeting the Commission should remind ... predators in Statistical Area 48. Author(s): Delegation of Ukraine Title: On the future revision of the ...
Meeting Document : CCAMLR-XXIX/47 : Author(s): Delegation of Ukraine
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Estimates of local biomass with uncertainty for Antarctic (Dissostichus mawsoni) and Patagonian (D. eleginoides) toothfish in research blocks in Subareas 48.6 and 58.4
Abstract: Local biomass of toothfish in research blocks in Subareas 48.6 and 58.4 have been ... limits for 2018/19. The only research blocks in which there were adequate recaptures were 486_2, 486_3 ... and 486_4. However, as the trend in all three of these research blocks was declining the revised catch ... the research blocks was determined by the requirement that the absolute change in the existing catch ...
Meeting Document : WG-FSA-18/12 : Author(s): CCAMLR Secretariat
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A development of catch per unit effort (CPUE) trends that may be useful in stock assessment for Dissostichus mawsoni in Subarea 48.6
these data to extract annual time series trends that may be of use in the fitting of stock assessment ... models for Dissostichus mawsoni (D. mawsoni) in the area. The entire fishing area in 48.6 which is ... subarea. The trends from these models reflect stable to a slight increase in CPUE since 2013 which might ... be reflection better management since research block were introduced in 2012/2013 fishing season ...
Meeting Document : WG-SAM-2019/37 : Author(s): S. Somhlaba, K. Leach, M. Bergh, T. Okuda, T, IIchi, R. Sarralde and T. Namba
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Fishes in pelagic catches in the vicinity of the South Shetland Island during the 6th Antarctic expedition of rv Kaiyo Maru, 1990/1991
occurrence and abundance of fishes in a total of 102 pelagic hauls for the Antarctic krill were made. Of the ... 102 net hauls, a total of 104 fishes belonging to 4 families and 16 species were captured in 25 tows ... . Juvenile Lepidonotothen larseni was the most abundant (46 individuals; 44.2% in number) and post-larval ... Cryodraco antarcticus was the next (14 individuals; 13.5% in number). The standard length of L. larseni ...
Meeting Document : WG-KRILL-93/50 : Author(s): T. Iwami, T. Ichii, H. Ishii and M. Naganobu (Japan)
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Results of scientific observation in Antarctic krill fishery in 2010/11: I. state of observer deployment and data collection
protocol and data collection in krill fisheries in 2010/11. All the 12 krill fishing vessels that operated ... in 2010/11 deployed scientific observers in accordance with the agreed systematic coverage. The ... observer allocation covered all the months and Subareas in which fishing operations were conducted. However ... current state of data collection, mere extension of the observer coverage may not result in the ...
Meeting Document : WG-EMM-12/65 : Author(s): M. Kiyota and T. Okuda (Japan)
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Estimation of tag-loss rates for tagged fish in the Patagonian toothfish (Dissostichus eleginoides) fisheries at Heard Island and McDonald Islands in Division 58.5.2
Abstract: Tag-loss or tag-shedding rates for tagged fish in the Patagonian toothfish ... (Dissostichus eleginoides) fisheries at Heard Island and McDonald Islands (HIMI) in Division 58.5.2 were ... fish. With an initial tag-loss proportion of 2.8% and ongoing tag-loss rate of 0.056 in the longline ... . The parameter of annual tag-loss rate in CASAL’s single-tag model was approximated, for a maximum time ...
Meeting Document : WG-FSA-17/21 : Author(s): P. Ziegler
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Possibility of predicting sea-ice concentration (SIC) in research block (RB) 48.6-5 (Southern part of Subarea 48.6) using sea surface temperature (SST) in RB 48.6-2 (Northern part of 48.6)
48.6-5 corresponded well with the dynamics of monthly sea surface temperature (SST) anomaly in RB ... 48.6-5. However, in the prediction of SIC in RB 48.6-5 using the monthly SST anomaly ... be used to predict the SIC in 48.6- 5. There is not a strong correlation of SST between ... 48.6-2 and 48.6-5. However there are similar SST positive spikes both in 48.6-2 and 48.6-5 and it is ...
Meeting Document : WG-FSA-2019/49 : Author(s): T. Namba, R. Sarralde, S. Somhlaba and J. Pompert
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Results from the groundfish survey conducted in CCAMLR Subarea 48.3 in January/February 2011
dominated at Shag Rocks, however 1+ and 2+ sized fish were present in larger proportions at South Georgia. A ... tonnes. Euphausiidae was the dominant prey item in the mackerel icefish diet with increased dietary ... bottom and very few acoustic marks were observed in the water column. Themisto sp. was the only other ... prey that made a substantial contribution to the diet, occurring in 39.47% of stomachs. Catches of ...
Meeting Document : WG-FSA-11/29 : Author(s): J. Brown, S. Gregory, K. Brigden, R. Benedet, O. Hogg, P. Brewin and L. Featherstone (United Kingdom)
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Scientific background document in support of the development of a CCAMLR MPA in the Weddell Sea (Antarctica) – Version 2017 – Reflection of the recommendations by WG-EMM-16 and SC-CAMLR-XXXV
Abstract: The CAMLR Scientific Committee in 2016 reviewed three scientific background documents ... in support of the development of a CCAMLR MPA in the Weddell Sea. Germany was asked to carry out ... further work, in particular regarding the issues and questions raised at WG-EMM-16 and SC-CAMLR-XXXV. Here ... scenarios. In this context, we show how the cost layer works. Subsequently, a revised Marxan approach based ...
Meeting Document : WG-SAM-17/30 : Author(s): K. Teschke, H. Pehlke and T. Brey on behalf of the German Weddell Sea MPA (WSMPA) project team