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Комиссия по сохранению морских живых ресурсов Антарктики

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  1. The effect of temporal variability on power analysis predictions for Adélie penguin CEMP parameters at Béchervaise Island

    Abstract:  There are unresolved issues surrounding the use of power analyses for examining the ... ability of CEMP data to detect change. The effect size that should prompt a response if observed in a ... parameter and the likely response of parameters such as arrival or fledgling weights are two of these issues ... . Understanding the source of the variability required to generate ‘noise’ for the power analysis simulations is ...

    Meeting Document : WG-EMM-03/49 : Автор(ы): L.M. Emmerson and C. Southwell (Australia)

  2. The krill fishery observer manual – points to be revised

    Abstract:  This document lists up the current form to be filled in the observer manual for the ... krill fishery. I raise the underlying problem to be clarified or modified. This includes technical ... problems, workload limit, and also the problem of the commercial confidentiality. The current manual ... consists of nine forms and some of them were developed independent from other forms. Once the observer at ...

    Meeting Document : WG-EMM-02/29 : Автор(ы): S. Kawaguchi (Japan)

  3. DEPREDATION AROUND SOUTH GEORGIA AND THE IMPLICATIONS ON STOCK ASSESSMENT OF D. ELEGINOIDES

    Abstract:  Observer data collected on longliners between 2003 and 2009 was analysed to look at the ... %) with killer whales present on 562 lines (3.8%) and sperm whales on 2588 lines (17.7%). By comparing the ... catch per unit efforts (CPUEs) with and without the presence if cetaceans, the amounts lost were also ... examined and varied from 0.9% to 5.8% of the TAC per year over the time period. Additional work was also ...

    Meeting Document : WG-FSA-09/16 : Автор(ы): J. Moir Clark, D.A. Agnew, P. McCarthy and M. Unwin (United Kingdom)

  4. Revised estimates of yield for Electrona carlsbergi based on a generalised version of the CCAMLR krill yield model

    widely varying recruitment patterns, overestimation of the abundance of the stock and age of the most ... recent survey. These problems are addressed in this paper by using stock projections to assess the ... probabilities of the stock of Electrona carlsbergi becoming depleted over a 20 year period. These projections ... have been undertaken using a generalised version of the CCAMLR Krill Yield Model. This is appropriate ...

    Meeting Document : WG-FSA-94/21 : Автор(ы): A.J. Constable and W.K. de la Mare (Australia)

  5. A simple approach for calculating the potential yield of krill from biomass survey results

    Abstract:  Estimates are calculated for the parameter λ in the yield equation Y = λ M B0 for a ... kri11 fishery in which both the fishery and kri11 growth are seasonal. The criterion used for the ... calculations is that the probability that the kri11 spawning biomass drops below 20% of its average pre ... -exploitation level over a 20 year period of harvesting should not exceed l0%. The value of λ depends strongly ...

    Meeting Document : WG-KRILL-91/24 : Автор(ы): D.S. Butterworth (South Africa) and M. Basson (United Kingdom)

  6. Temporal variability in Antarctic marine ecosystems: periodic fluctuations in the phocid seals

    aspect of their biology: the age structure of crabeater seals (Lobodon carcinophagus) around the ... and with the Southern Oscillation Index (SOI). All of the seal data sets showed evidence of cyclical ... behavior when demodulated at a period of 5 yr. The Weddell seals were generally in phase with the SOI since ... the Weddell series began in 1970. The leopard seals and SOI were in phase in the 1960’s, but ...

    Meeting Document : WG-CEMP-91/13 : Автор(ы): J.W. Testa, G. Oehlert, D.G. Ainley, J.L. Bengtson, D.B. Siniff, R.M. Laws and D. Rounsevell (USA)

  7. Using mark-recapture and catch-age data to estimate fishing and natural mortality for the Patagonian toothfish at South Georgia

    natural mortality, and integrates catch-at-age data into the estimation model, to aid in distinguishing ... between natural and fishing mortality. The model essentially follows tagged cohorts, with the estimated ... parameters being the  fishing and natural mortality vectors for that particular cohort. The model was tested ... analysed with the model. The ages covered by the analysed cohorts ranged from 5 to 13. In the model runs ...

    Meeting Document : WG-FSA-SAM-06/06 : Автор(ы): R.M. Hillary and D.J. Agnew (United Kingdom)

  8. Diet of Antarctic toothfish (Dissostichus mawsoni) from the Ross Sea region, Antarctica

    Abstract:  The diet of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region was ... . Overall, the diet of sub-adult toothfish was similar to that of adult toothfish, with a dominance of ... importance (IRI), grenadiers (Macrourus spp.) were the most important fish and overall prey species. The ... study did not distinguish between M. whitsoni and M. caml, but this should occur in future. Over the ...

    Meeting Document : WG-FSA-12/52 : Автор(ы): D.W. Stevens, M.R. Dunn, M.H. Pinkerton and J.S. Forman (New Zealand)

  9. Some aspects of size composition dynamics of Antarctic toothfish (Dissostichus mawsoni) from the Ross Sea (Statistical Subarea 88.1)

    Abstract:  The analysis of the data on size composition of Antarctic toothfish (Dissostichus ... mawsoni) from catches in different statistical areas of the Ross Sea was given. Biological data for two ... the size composition of the fished part of Antarctic toothfish population. It was noted that during ... both periods of the fishery, in the southern statistical areas (SSRU H, I, K, L), the portion of small ...

    Meeting Document : WG-FSA-12/17 : Автор(ы): A.K. Zaytsev (Ukraine)

  10. Practical options for developing feedback management for the krill fishery in Subarea 48.2

    might facilitate the development of feedback management procedures for the krill fishery in Area 48. In ... reviewing the state of ecological knowledge for Subarea 48.2, we conclude that movement towards Stage 2 (in ... the Staged approach advocated by WG-EMM) is highly improbable based on the current level of ... information available for Subarea 48.2. We suggest that there is an urgent need to improve the ecological ...

    Meeting Document : WG-EMM-14/04 : Автор(ы): P. Trathan (United Kingdom), M. Santos (Argentina) and O.R. Godø (Norway)

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E-mail: ccamlr [at] ccamlr [dot] org
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