Résultats de la recherche

1. COLLAPSE OF SOUTH AFRICA’S PENGUINS IN THE EARLY 21ST CENTURY

   Abstract:  The number of African penguins Spheniscus demersus breeding in South Africa collapsed ... from about 56 000 pairs in 2001 to some 21 000 pairs in 2009, a loss of 35 000 pairs (>60%) in eight ... classification of the species as Endangered. In South Africa, penguins breed in two regions, the Western Capeand ... Algoa Bay (Eastern Cape), their breeding localities in these regions being separated by c. 600 km. Their ...

   Meeting Document : WG-EMM-11/P8 : Auteur(s): R.J.M. Crawford, R. Altwegg, B.J. Barham, P.J. Barham, J.M. Durant, B.M. Dyer, D. Geldenhuys, A.B. Makhado, L. Pichegru, P.G. Ryan, L.G. Underhill, L. Upfold, J. Visagie, L.J. Waller and P.A. Whittington

2. Elaborating a representative system of marine protected areas in eastern Antarctica, south of 60°S

   paper, we develop a proposal for a RSMPA in eastern Antarctica for the region between 30 o E and 150 o E ... Comprehensiveness, Adequacy and Representativeness (CAR) in the long term, (ii) accounts for the state of knowledge ... , and (iii) can be modified as the state of knowledge improves. In addition, the utility of the RSMPA ... will be increased if it (iv) can act as a source for maintaining biodiversity in areas outside of the ...

   Meeting Document : WG-EMM-10/26 : Auteur(s): A.J. Constable, B. Raymond, S. Doust, D. Welsford and K. Martin-Smith (Australia)

3. Population dynamics of wandering albatross Diomedea exulans and Amsterdam albatross D. amsterdamensis in the Indian Ocean and their relationships with longline fisheries: conservation implications

   recent years has probably resulted in the slow recovery of these albatross populations as a result of ... Abstract:  Studies carried out over the past three decades at Crozet and Kerguelen Islands in the ... populations are in contact with long-line fisheries, mainly the pelagic Japanese southern blue-Jin tuna ... albatross populations, most which are still declining in the Southern Ocean. Possible conservation measures ...

   Meeting Document : WG-FSA-96/09 : Auteur(s): Jouventin, P., Brothers, N., Weimerskirch, H.

4. Distribution and abundance of Antarctic krill in the vicinity of Elephant Island during the 1994 austral summer

   during the last five years of AMLR surveys in the Elephant Island study area and one-fifth of the 1990 ... from four acoustic surveys conducted in the vicinity of Elephant Island, Antarctica, from mid-January ... biomass in the same survey portion was estimated to be 359 X 106 t. During the second and third surveys ... high densities of krill were mapped in the shoal waters to the north of Elephant Island; biomasses were ...

   Meeting Document : WG-Joint-94/09 : Auteur(s): R.P. Hewitt and D.A. Demer (USA)

5. 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)

6. Has climate change promoted genetic fragmentation in the ice-dependent fish Pleuragramma antarcticum?

   in the central region of the western AP for two consecutive years, all suggest that this sea-ice ... pelagic life cycle and plays a major trophic role in the coastal Antarctic marine ecosystem. A previous ... pools, and population structure. In the present study, we used 16 EST-linked microsatellites to ... variability in the southwestern AP, while significant genetic differences were detected on a small geographic ...

   Meeting Document : WG-FSA-13/67 : Auteur(s): C. Agostini, T. Patarnello (Italy), J. Ashford, J. Torres (USA) and L. Zane (Italy)

7. On the consequences of differentiating between adult and sub-adult survival rates in the krill-predators model

   split of the overall density dependence effect between the first year and following sub-adult years of ... Abstract:  The krill-predators model is generalised by splitting post-first-year animals into ... growth rates, thus solving problems of lack of self-sustainability encountered in earlier model analyses ... . This solution brings with it new problems, however, in that two further parameters need to be specified ...

   Meeting Document : WG-EMM-95/39 : Auteur(s): Butterworth, D.S., Thomson, R.B.

8. An updated descriptive analysis of the toothfish (Dissostichus spp.) tagging programme in Subareas 88.1 and 88.2 up to 2005/06

   and 25 recaptured. Tagging rates by area over the past three years have been in the same proportion as ... Abstract:  A descriptive analysis of the toothfish tagging programme carried out in Subareas 88.1 ... which were presented in July 2006 at WG-FSA-SAM. In addition, the paper presents release and recapture ... the catch by area. However, recapture rates have tended to be higher in SSRUs 88.2E, 88.1C, and 88.1H ...

   Meeting Document : WG-FSA-06/34 : Auteur(s): A. Dunn and S.M. Hanchet (New Zealand)

9. Proposal for an experimental crab fishery in Subarea 48.3

   beginning of the second fishing season and is a series of three depletion experiments conducted in local ... second fishing season. Phase 3 commences just prior to the close of the second fishing season. In this ... powerful when multiple vessels participate in the fishery, but valuable information can still be obtained ... experimental crab fishery in Subarea 48.3 Approval:  Approved ...

   Meeting Document : WG-FSA-93/22 : Auteur(s): George Watters (USA)

10. Longline sink rates on a bottom autoline vessel in New Zealand: draft

    vessel F.V. San Aotea in New Zealand. The objective of the project was to determine line sink rate, and ... as would be used in normal fishing operations to test the effectiveness of weighting the longline as ... the middle of an unweighted longline of this design sinks to 10m in a mean time of 63.0 seconds (n ... have quite noticeable effects on line sink rate for 20- 40 m either side of the attached weight. Given ...

    Meeting Document : WG-FSA-98/51 : Auteur(s): N.W. McL. Smith (New Zealand)

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