Résultats de la recherche

1. Long-term observations from Antarctica demonstrate that mismatched scales of fisheries management and predator–prey interaction lead to erroneous conclusions about precaution

   hierarchical model and 30+ years of monitoring data, we show that expected penguin performance was reduced when ... Abstract:  Low catch limits for forage species are often considered to be precautionary measures ... Ocean and are key forage for numerous predators. Current krill removals are considered precautionary and ... limits that are considered precautionary for forage species simply because the limit is a small ...

   Meeting Document : WG-EMM-2019/11 : Auteur(s): G.M. Watters, J.T. Hinke and C.S. Reiss

2. Estimating toothfish biomass in Subarea 48.3 using local depletions

   out some possibility of potential as an alternative assessment method for toothfish. Author(s ... CPUE over the four years and multiplying by the total fishable area in Subarea 48.3 we arrived at an ... of 12’ by 12’ where there had been forty or more hauls in any particular year. There were 62 ... means of estimating toothfish density at South Georgia. Over the four years 2000-2003, we found 25 areas ...

   Meeting Document : WG-FSA-SAM-04/18 : Auteur(s): Pearce, J., Agnew, D.

3. Monitoring and managing the effects of environmental change on toothfish assessments

   Abstract:  This paper presents a ‘first-step’ proposal for CCAMLR to consider the effects of ... productivity and environmental conditions are not required for this understanding to be useful. We propose that ... assessment would reduce uncertainty in management advice. The parameters that could be evaluated to for the ... variability (σ R), mean length at age, mean weight at length, natural mortality (m), and maturation ogives ...

   Meeting Document : WG-SAM-18/22 : Auteur(s): M. Pinkerton, A. Dunn, S. Mormede and S. Parker

4. Assessment of the Patagonian Toothfish (D. eleginoides) in Subarea 48.3

   35 years with 50% probability, with less than 1% probability declining below 20% of B0 and would ... . The 2008 year class is estimated to be well above average. Provisional projections indicate that a ... the current status of the stock is at 52% of B0. Spawning biomass has been increasing in recent years ...

   Meeting Document : WG-FSA-15/59 : Auteur(s): T. Earl, M. Soeffker and C. Darby (United Kingdom)

5. Integrating Climate and Ecosystem Dynamics in the Southern Ocean (ICED) programme: a report on recent joint activities and links between ICED and CCAMLR

   Abstract:  ICED is an international multidisciplinary programme undertaking integrated circumpolar ... analyses to improve understanding of Southern Ocean change, the implications for ecosystems and for ... interest to CCAMLR. The 2018 ICED Projections Workshop, undertaken in collaboration with CCAMLR, provided ... an initial, mainly qualitative, assessment of the potential impacts of climate change on krill, their ...

   Meeting Document : WG-EMM-2019/02 : Auteur(s): R.D. Cavanagh, N.M. Johnston and E.J. Murphy

6. NOTIFICATION OF VULNERABLE MARINE ECOSYSTEMS IN STATISTICAL AREA 58.4.1

   a simple pro-forma. Two VMEs identified during the Australian CEAMARC-CASO cruise are notified using ... Approved Document Release Consent:  Yes Delegation responsibility for releasing documents:  CCAMLR ...

   Meeting Document : SC-CAMLR-XXVII/13 : Auteur(s): Delegation of Australia

7. Bycatch of fishes captured by the krill fishing vessel Chiyo Maru No. 2 in Statistical Area 58 (January to March 1995)

   ). In numbers, an average of about 20 fish were caught per ton of krill, and an average of about 23 fish ... krill, and an average of about 2 kg of fish were caught per hour of towing. Confidence intervals for ... noted that the results for reporting fish bycatch were not presented in CCAMLR's standard format ... were caught per hour of towing. In weight, an average of about 1.5 kg of fish were caught per ton of ...

   Meeting Document : WG-FSA-95/40 Rev. 1 : Auteur(s): Watters, G.

8. Is current management of the Antarctic krill fishery in the Atlantic sector of the Southern Ocean precautionary?

   subarea, derived from the subarea catch limit, appears to exceed this level in up to 20% of years due to ... (or “trigger level”), established in 1991, is 0.62 million tonnes year-1, equivalent to ~1% of the ... evidence for a decline in the abundance of krill in the 1980s, but no evidence of further decline over more ... % level considered precautionary for Antarctic krill. However, the permitted exploitation rate in each ...

   Meeting Document : WG-EMM-16/21 : Auteur(s): S. Hill, A. Atkinson, C. Darby, S. Fielding, B. Krafft, O.R. Godø, G. Skaret, P. Trathan and J. Watkins

9. Biology, distribution and abundance of Antarctic krill (Euphausia superba) and by-catch

   'S to 61°13'S and long.30°02'E to 40°05'E. These were analysed onboard FORV Sagar ... Sampada for the study of biology, distribution and abundance. The samples were collected for a period of ... trawl. The length frequency analysis indicated a bimodel distribution with 19-20 mm and 53-54mm as the ...

   Meeting Document : WG-EMM-98/37 : Auteur(s): A. Anrose, Z. Klusek, M.K.R. Nair and M. R. Bhoopendranath (India)

10. Metabarcoding analysis of the stomach contents of the Antarctic toothfish (Dissostichus mawsoni) collected in the Antarctic Ocean

    , indicating the quality of the DNA barcode database for the Antarctic Ocean was sufficient for molecular ... analysis, especially for fish species. A total of 19 species was identified from the stomach of D. mawsoni ... in this study, which included 14 fish species and 5 mollusks. More than 90 % of contigs belonged to ... that of previous studies). We also obtained genotypes of prey items by NGS analysis, identifying an ...

    Meeting Document : WG-FSA-17/P03 : Auteur(s): T.-H. Yoon, H.-E. Kang, S. R. Lee, J.-B. Lee, G. W. Baeck, H. Park and H.-W. Kim

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