Résultats de la recherche

1. Preliminary assessment of Patagonian toothfish in Subarea 48.3

   terminal assessment year continues to be estimated at around 54% of virgin biomass, consistent with the ... outputs from the 2-fleet and 3-fleet assessments are very similar with the exception of the ... and require further investigation. Yield calculations have yet to be completed. Author(s):  R. Scott ...

   Meeting Document : WG-FSA-13/30 : Auteur(s): R. Scott (United Kingdom)

2. Model diagnostics for the Antarctic krill assessment for Subarea 48.1

   populations (Ziegler et al., 2015; SC-CAMLR-XXXIV/05, Appendix D). Similar diagnostics can be applied to any ... ; configuration of the krill model was presented to EMM in 2015 (Kinzey et al. 2015a) along with seven alternative ... description of the base case and differently-weighted configurations with a table of likelihood components for ... parameters will also be provided. Author(s):  D. Kinzey, G.M. Watters and C.S. Reiss (USA) Title:  Model ...

   Meeting Document : WG-FSA-15/60 : Auteur(s): D. Kinzey, G.M. Watters and C.S. Reiss (USA)

3. Features of chronology and breeding success of Pygoscelis papua and Pygoscelis adeliae penguins in the Wilhelm Archipelago (CCAMLR Subarea 48.1)

   of the Wilhelm Archipelago. It was observed that at the beginning of the ХХІ century the nesting ... shown that  P. papua  is more ecologically plastic species than  P. adeliae. Well-known that the ... breeding success of penguins can be used as an indication of the status of lower trophic levels. Future ... results of the gentoo and Adelie penguin’s chronology and breeding success studies might be used in the ...

   Meeting Document : WG-EMM-18/P13 : Auteur(s): I.V. Dykyy, G.P. Milinevsky, O.L. Savitsky, D.G. Lutsenko, P.B. Khoetsky, M.F. Veselsky, V.M. Smagol, A.O. Dzhulay, J.V. Tsaryk, K.M. Nazaruk, A.T. Zatushevsky, A.O. Simon and M.A. Telipska

4. A model at the level of the foraging trip for the indirect effects of krill (Euphausia superba) fisheries on krill predators

   with slopes less than 1; that is, reductions in reproductive success and parental survival are linear ... indirect effects of the fishery on penguin reproduction and survival. As with all models, there is ... generate the long-term frequency distribution of krill biomass. Furthermore, we assume that there is ... distribution of available krill. 4. We assume that after fledging, offspring survival depends in part upon the ...

   Meeting Document : WG-EMM-96/20 : Auteur(s): Switzer, P.V., Mangel, M.

5. BEACH DEBRIS SURVEY AND INCIDENCE OF ENTANGLEMENT OF ANTARCTIC FUR SEALS ARCTOCEPHALUS GAZELLA AT SIGNY ISLAND, SOUTH ORKNEY ISLANDS 2007/2008

   were observed with neck collars formed from fisheries related debris. Beach surveys recovered a total ... ). There was a decrease in the number of plastic packaging bands with only two found in the current season ... related debris contributed 11% of all items (9% rope and 2% trawl net webbing). These results show that ... the longevity of plastics and other materials with a high resistance to degradation in the marine ...

   Meeting Document : WG-FSA-08/26 : Auteur(s): M.J. Dunn and C.M. Waluda (UK)

6. Environmental variability effects on marine fisheries: four case histories

   , management strategies must be flexible enough to include delayed responses to environmental variations that ... Abstract:  The changing nature of marine fisheries requires management approaches that recognize ... distribution of the stock. Four examples, ranging from Antarctic krill to oysters, are given that clearly ... illustrate environmental control on the fishery. From these examples, we argue that future management ...

   Meeting Document : WG-EMM-97/66 : Auteur(s): Hofmann, E.E., Powell, T.M.

7. CCAMLR ecosystem monitoring and a feedback management procedure for krill

   detect short term declines in land-based predator performance (eg. reproductive performance) that may be ... Programme might be incorporated into a feedback management strategy for this fishery. Author(s):  A ...

   Meeting Document : WG-KRILL/CEMP-92/04 : Auteur(s): A. Constable (Australia)

8. Are tagging targets set in appropriate terms?

   that defining the target in terms of a percentage of the number caught may be more appropriate. Author ... Abstract:  Currently the target tagging rate to be achieved by vessels fishing in the CCAMLR area ...

   Meeting Document : WG-SAM-12/25 : Auteur(s): R.W. Leslie and C. Heinecken (South Africa)

9. Improvements to the multiple-frequency method for in situ target strength measurements

   Abstract:  Refinements have been made to the multiple-frequency method that was recently developed ... transducer. Tolerances for matching target positions at two or more frequencies were determined to be ±0.5 m ... experimental results indicate that such careful application of the multiple-frequency TS method can reject 100 ... % of multiple targets while allowing 90% of the resolvable single-targets to be measured Author(s ...

   Meeting Document : WG-EMM-99/38 : Auteur(s): D.A. Demer (USA) and M.A. Soule (South Africa)

10. OPTIMISING THE DESIGN OF LARGE-SCALE GROUND SURVEYS OF ADÉLIE PENGUIN ABUNDANCE USING VIRTUAL SIMULATION IN A GEOGRAPHIC INFORMATION SYSTEM

    ‘....that alternative census methods for large (penguin) colonies may be helpful. Such methods include the ... abundance could be estimated given known information on nest density within colonies...’ This paper uses ... virtual simulation in a GIS environment to explore how the recommended area/density approach can be ...

    Meeting Document : WG-EMM-11/42 : Auteur(s): C. Southwell, R. Driessen and S. Candy (Australia)

Pages