Résultats de la recherche

1. CPUE values derived from Soviet fishery statistics as indicators of Antarctic krill density fluctuations in 1977–1991

   - 1991 are considered. It is assumed that these values adequately describe trends in krill density ... fluctuations. Rather high stability of the values investigated is revealed. It is proposed that krill density ... of 170-200 g/m2 may be considered as an average characteristic value for the area 48. It was revealed ... , that interannual CPUEs variability is lower for the area 48 as a whole, comparing subareas, most ...

   Meeting Document : WG-EMM-04/39 : Auteur(s): F.F. Litvinov, A.Z. Sundakov and G.N. Andrianov (Russia)

2. Entanglement of Antarctic fur seals Arctocephalus gazella in man-made debris at Bird Island, South Georgia during the 1992 winter and 1992/93 pup-rearing season

   years and with twice as many seals suffering serious injuries. Almost all animals involved were juvenile ... disturbing, particularly following two years of relatively low incidence. It cannot be accounted for by ... , except possibly for the increase in vessels engaged in long-line fishing, which uses bait boxes tied with ... packaging bands. CCAMLR needs to renew its vigilance with respect to marine debris and should consider ...

   Meeting Document : SC-CAMLR-XII/BG/06 : Auteur(s): Delegation of United Kingdom

3. Progress towards validation of ageing of Dissostichus eleginoides using otoliths

   , fish have been treated with strontium to mark their otoliths for validation of subsequent age ... estimation. Otoliths from 69 fish that were at liberty for at least 350 days were eventually examined ... . Results indicate that current methods for ageing D. eleginoides are appropriate: the number of observed ... annuli on the otoliths after the strontium mark was consistent with the time at liberty of the fish after ...

   Meeting Document : WG-FSA-04/67 : Auteur(s): K. Krusic-Goluband R. Williams (Australia)

4. Quantifying habitat use in satellite-tracked pelagic seabirds: application of kernel estimation to albatross locations

   one species overlapping with that of the other. Author(s):  A.G. Wood (United Kingdom), B. Naef ... two species covers an estimated 440,000 and 640,000 km2 respectively, with very substantial overlap ... . In contrast, kernel estimation reveals that the main foraging areas of these two sympatric ... , the foraging areas cover c.81,500 and c.119,700 km2 respectively, with 42 % and 50 % of the range of ...

   Meeting Document : WG-FSA-99/19 : Auteur(s): A.G. Wood (United Kingdom), B. Naef-Daenzer (Switzerland), P.A. Prince and J.P. Croxall (United Kingdom)

5. Remarks on natural mortality of Dissostichus eleginoides in Subarea 48.3

   Abstract:  With samples originated in the Chilean longline fishery of Dissostichus eleginoides of ... , fishing depth and hook type. It was determined that there was no significative differences, in M value, in ... the considered cases with the different growing parameters, with the exception of the case of fishing ... found that there were significative differences between fishing sites and curve hooks N° 14 and straight ...

   Meeting Document : WG-FSA-92/21 Rev. 1 : Auteur(s): C.A. Moreno and P.S. Rubilar (Chile)

6. Extension to the krill-predator modelling exercise

   krill harvesting is found to be strongly dependent on the estimate of the maximum annual growth rate (R ... ) which the population can achieve. For R=10%, it is estimated that a krill harvesting intensity rate γ of ... slightly more than 0.1 would be required to reduce the seal population to half its pre-exploitation level ... -related mortality effects from overall survival rate data before they can be taken further. Author(s ...

   Meeting Document : WG-EMM-96/67 : Auteur(s): Thomson, R.B., Butterworth, D.S.

7. Long term movements and activity patterns of an Antarctic marine apex predator: the leopard seal

   Abstract:  Leopard seals are an important Antarctic apex predator that can affect marine ... island of South Georgia. It appears that these tracked animals migrate in a directed manner towards Bird ... shallow shelf water and regions of sea ice. Wet and dry sensors revealed that seals hauled out for between ... 22 and 31% of the time with maximum of 74 hours and a median of between 9 and 11 hours. The longest ...

   Meeting Document : WG-EMM-18/P09 : Auteur(s): I.J. Staniland, N. Ratcliffe, P.N. Trathan and J. Forcada

8. Biotopic and spatial distribution of krill Euphausia superba Dana (Crustacea, Euphausiacea) length groupings in the Atlantic sector of Antarctic in summer 1984 and 1988

   Abstract:  Three basic length groupings of krill were identified with the clustering analysis on ... in summer 1984 and 1988. The large-length grouping is biotopically associated with the waters of the ... grouping are associated with the Weddell Sea waters. Besides, the additional fourth grouping with bimodal ... length structure was revealed in the survey 1988. It is assumed that the first grouping is transported ...

   Meeting Document : WG-EMM-04/27 : Auteur(s): V.V. Lidvanov, A.V. Zimin, K.E. Shulgovsky (Russia)

9. Modeling the growth dynamics of Antarctic krill

   that were consistent with observations of experimentally starved individuals. the annual change in ... in the current literature. The model was forced with an environmental time series of food (pelagic ... phytoplankton concentration) that was derived from data sets collected west of the Antarctic Peninsula. Three ... time series were created to represent high, low, and intermediate food conditions with the high and low ...

   Meeting Document : WG-EMM-96/68 : Auteur(s): Lascara, C.M., Hofmann, E.E.

10. Population and survival trends of wandering albatrosses (Diomedea exulans) breeding on Macquarie Island

    with information from an intensive demographic study conducted between 1994 and 2003. Annual breeding ... effort and survival varied markedly with breeding numbers declining from a peak in 1964 to near ... and, to a lesser extent, adult survival. These survival changes were coincident with changes in ... . Trends in population numbers and survival are similar to that observed in other populations in the Indian ...

    Meeting Document : WG-FSA-04/50 : Auteur(s): A. Terauds, R. Gales, R. Alderman and G.B. Baker (Australia)

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