Résultats de la recherche

1. Alternative methods for determining subarea or local area catch limits for krill in Statistical Area 48

   limit on krill (Euphausia superba) in Statistical Area 48. The measure also asks the Scientific ... enforcement, 5) the effects on current fishing patterns, and 6) the potential for delay in implementing the ... models include large amounts of biological information, but may not be practical in the near future ... explicit and result in delayed implementation. None of the alternatives are categorized as being both ...

   Meeting Document : WG-KRILL-92/16 : Auteur(s): G. Watters and R.P. Hewitt (USA)

2. Diet and trophic niche of Macrourus spp. (Gadiformes, Macrouridae) in the Ross Sea region of the Southern Ocean

   Abstract:  Both Macrourus caml and M. whitsoni are probably abundant and widespread in the Ross ... (henceforth Macrourus spp.) in the Ross Sea region of the Southern Ocean. Samples of stomach contents were ... . Overall, amphipods were the dominant prey found in Macrourus spp. stomachs with an index of relative prey ... opisthopterus). Minor prey found in stomachs included isopods, mysids, salps and polychaetes, with rocks and ...

   Meeting Document : WG-EMM-12/P03 : Auteur(s): M.H. Pinkerton, J. Forman, D.W. Stevens, S.J. Bury and J. Brown

3. A critical re-examination of the evidence for a possible dependence of Weddell seals (Leptonychotes weddellii) on Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea, Antarctica

   (Dissostichus mawsoni; ‘toothfish’) in the Ross Sea may affect the ecological viability of top predators such as ... of potential prey species including toothfish in the context of updated estimates of Weddell seal ... -energy food resource for Weddell seals that possibly cannot be adequately replaced by other prey, in ... antarcticum) in Weddell seal diets should be re-examined given the known biases of methods used to derive diet ...

   Meeting Document : WG-EMM-13/28 : Auteur(s): R. Eisert, M.H. Pinkerton (New Zealand), S.D. Newsome and O.T. Oftedal (USA)

4. A spatially explicit population dynamics operating model for Antarctic toothfish in the habitable depths of the Ross Sea region

   Antarctic toothfish in the Ross Sea region, for a medium scale spatial resolution (189 spatial cells ... ) covering the Ross Sea region. In this model run we spatially restrict the stock to cells where at least 5 ... plausible distribution hypothesis in-between the two extreme bounding hypotheses represented by the ... about the distribution of toothfish in areas where no fishing has occurred, such that the unrestricted ...

   Meeting Document : WG-FSA-13/53 : Auteur(s): S. Mormede, A. Dunn, S. Parker and S. Hanchet (New Zealand)

5. Selectivity and two biomass measures in an age-based assessment of Antarctic krill (Euphausia superba)

   selectivities were examined. Parameters were estimated in phases with the sequential order of the phases ... quantities was tested using simulated data. Annual trends in the estimates of total biomass, spawning biomass ... trends in population biomass, but less variable estimates of scale, compared to time-constant ... in any integrated stock assessment with parameters estimated in phases. Author(s):  D. Kinzey, G.M ...

   Meeting Document : WG-EMM-15/P07 : Auteur(s): D. Kinzey, G.M. Watters and C.S. Reiss

6. A LARGE-SCALE SURVEY OF ADÉLIE PENGUIN BREEDING DISTRIBUTION IN EAST ANTARCTICA

   across the Australian Antarctic Territory in east Antarctica found that approximately half of the species ... current breeding distribution, it is not possible to reliably assess possible future change in breeding ... sites, increasing the number of known breeding sites in the survey region by 42% from 104 to 148. Author ... BREEDING DISTRIBUTION IN EAST ANTARCTICA Approval:  Approved ...

   Meeting Document : WG-EMM-11/34 : Auteur(s): C. Southwell and L. Emmerson (Australia)

7. ANALYSIS OF VARIABILITY OF KRILL SIZE AND FISH BY-CATCH IN JAPANESE KRILL FISHERY BASED ON SCIENTIFIC OBSERVER DATA

   , and haul) based on a state-space model, which can separate biological process error in the population ... dynamics from observation error caused by the fishery activity and individual observation. In both krill ... variability of krill population structure and a difficulty in predicting krill population dynamics. Variances ... enlarging haul coverage > 50% have smaller effects in improving data accuracy and may not balance the ...

   Meeting Document : WG-EMM-11/39 : Auteur(s): T. Okuda and M. Kiyota (Japan)

8. Review of CCAMLR activities on monitoring marine debris in the Convention Area

   on marine mammals and seabirds in the Convention Area has been reviewed. The CCAMLR Marine Debris ... , reached a peak in the period 1994–1996 at Bird Island and Signy Island has declined thereafter. The level ... of marine debris found in seabird colonies at Bird Island has continually increased, with fishing ... ) entanglement at Bird Island reached a peak in 1993 and showed a decline until 2000 since when there has been a ...

   Meeting Document : SC-CAMLR-XXII/BG/25 : Auteur(s): Secretariat

9. Revised selectivities for Dissostichus eleginoides taken by longliners in Subarea 48.3

   selectivities for the years 1995 – 2000 for input to the GYM assessment. In this paper, I propose a revised ... method for estimating the selectivities based on an assumption that the proportions of the total CPUE in ... an area for a particular length class that are taken in different depth zones are Beta-distributed ... for Dissostichus eleginoides taken by longliners in Subarea 48.3 Approval:  Approved ...

   Meeting Document : WG-FSA-02/64 : Auteur(s): G.P. Kirkwood (United Kingdom)

10. Sources of variance in studies of krill population genetics

    Abstract:  There is a long-term interest in the population genetics of Antarctic krill species ... resurgence of interest in identifying distinct stocks of swarming krill species has been driven by the ... structure. More recent investigations using sequence variation in mitochondrial DNA (mtDNA) did indicate ... variance attributable to differences between regions. Genetic differentiation between stocks of krill in ...

    Meeting Document : WG-EMM-01/12 : Auteur(s): S.N. Jarman and S. Nicol (Australia)

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