Search results
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Influence of tag numbers, size of tagged fish, duration of the tagging program, and auxiliary data on bias and precision of an integrated stock assessment
annual recruitment and year class strengths. (3) For a simulated lightly fished stock, CASAL assessments ... , however the precision of SSB status estimates in the final assessment year was relatively low. Bias ... and year class strengths. (3) For a simulated lightly fished stock, CASAL assessments with good quality ... the precision of SSB status estimates in the final assessment year was relatively low. Bias and precision ...
Meeting Document : WG-SAM-12/24 : Author(s): P.E. Ziegler (Australia)
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Results of the fourth CCAMLR sponsored research survey to monitor abundance of sub-adult Antarctic toothfish in the southern Ross Sea, February 2015 and further development of the time series
) toothfish for the core strata showed a significant decline in this fourth year of the survey series. Age ... of the core survey area, as well as the relatively weaker subsequent year classes. These results suggest ... the survey be continued to provide information on year class strength and recruitment variability ... ) toothfish for the core strata showed a significant decline in this fourth year of the survey series. Age ...
Meeting Document : WG-SAM-15/44 : Author(s): S.M. Hanchet, B.R. Sharp, S. Mormede, S.J. Parker (New Zealand) and M. Vacchi (Italy)
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Entanglement of Antarctic fur seals Arctocephalus gazella in man-made debris at Signy Island, South Orkney Islands 2000/01
Island, South Orkney Islands are reported for the 2000/2001 summer season. This is the first year ... to the previous year. The absence of entangled seals at Signy Island could be due to the relatively low numbers ... , South Orkney Islands are reported for the 2000/2001 summer season. This is the first year in which ... , these indicated that the number of entangled fur seals had increased (by57%) compared to the previous year ...
Meeting Document : SC-CAMLR-XX/BG/04 : Author(s): Delegation of the United Kingdom
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Trends of the Dissostichus eleginoides stock using the sequential population analysis (SPA) model in Subarea 48.3: 1992-1996
the last year (1996) in relation to the previous ones. This result supports the idea that the use ... of the stochastic projections adopted by consensus last year, has produced an appropriate and promising assessment ... and Spawning Biomass showed a stabilization during the last year (1996) in relation to the previous ones ... . This result supports the idea that the use of the stochastic projections adopted by consensus last year, has ...
Meeting Document : SC-CAMLR-XV/BG/14 : Author(s): Delegation of Chile
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Summary of monitoring and research activities at Svarthamaren, Dronning Maud Land
covered by the monitoring system the mean number of pairs producing a chick each year is about 132,000 ... . On average 52% of the reproductive fraction of the population breeds each year indicating that the total ... covered by the monitoring system the mean number of pairs producing a chick each year is about 132,000 ... . On average 52% of the reproductive fraction of the population breeds each year indicating that the total ...
Meeting Document : WG-EMM-97/78 : Author(s): Lorentsen, S., Tveraa, T., Røv, N.
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Analysis of observer coverage for Japanese krill fishing vessels
stage cluster sampling units (i.e., vessel, year, subarea, and haul), and examined changes ... had the largest impacts, and year coverage had moderate impacts on CV for both mean krill length ... cluster sampling units (i.e., vessel, year, subarea, and haul), and examined changes in the coefficients ... the largest impacts, and year coverage had moderate impacts on CV for both mean krill length and fish bycatch ...
Meeting Document : WG-SAM-10/17 : Author(s): T. Okuda, M. Kiyota and H. Okamura (Japan)
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Progress report on the research fishery for Dissostichus spp. in Subarea 48.6 being jointly undertaken by Japan and South Africa: 2012/13 and 2013/14
Abstract: Japan and South Africa are undertaking a multi-year research plan in Statistical ... of the Dissostichus resource in Subarea 48.6 to be undertaken next year. Concern is expressed over the rise of IUU ... Japan and South Africa are undertaking a multi-year research plan in Statistical Subarea 48.6 ... 48.6 to be undertaken next year. Concern is expressed over the rise of IUU activity in Subarea 48.6 ...
Meeting Document : WG-SAM-14/10 : Author(s): R. Leslie (South Africa), K. Taki, T. Ichii (Japan) and S. Somhlaba (South Africa)
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Changes to the Statistical Bulletin
: (1) publication of data by CCAMLR season rather than by split-year (agreed at SC-CAMLR-XXI); and (2) a revision ... data records include a reference to the split-year and month when fishing occurred. However, in a small ... : (1) publication of data by CCAMLR season rather than by split-year (agreed at SC-CAMLR-XXI); and (2) a revision ... data records include a reference to the split-year and month when fishing occurred. However, in a small ...
Meeting Document : SC-CAMLR-XXII/BG/07 : Author(s): Secretariat
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Population numbers of fur seals at Prince Edward Island, Southern Ocean
intrinsic rate of natural increase of 13.7% per year, Antarctic fur seals appear to be in the rapid ... rate of natural increase of some 9.5% per year since 1987/88. Author(s): M.N. Bester, P.G. Ryan ... intrinsic rate of natural increase of 13.7% per year, Antarctic fur seals appear to be in the rapid ... rate of natural increase of some 9.5% per year since 1987/88. ...
Meeting Document : WG-EMM-03/18 : Author(s): M.N. Bester, P.G. Ryan and B.M. Dyer (South Africa)
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Estimates of bird by-catch by IUU vessels in Subarea 48.3, 1998–2001
and Kirkwood last year (WG-FSA-02/4 & 5) are updated to take account of the comments of the working group ... . Last year we suggested that the Isabel data from 1997 were rather atypical of bird catch rates ... last year (WG-FSA-02/4 & 5) are updated to take account of the comments of the working group. Last year ...
Meeting Document : WG-FSA-03/56 : Author(s): D.J. Agnew (United Kingdom)