Résultats de la recherche

1. A comparison of acoustic targets at South Georgia and the South Orkney Islands during a season of profound krill scarcity

   Abstract:  Dual frequency (38 and 120 kHz) acoustic surveys of shelf-break regions in the vicinity of Willis Islands, South Georgia and Coronation Island, South Orkneys, both in the Atlantic sector of the Southern Ocean, were carried out from RRS lames Clark Ross during January 1994. Difference in

   Meeting Document : WG-EMM-95/75 : Auteur(s): Watkins, J.L., Brierley, A.S.

2. A comparison of geostatistical and random sample survey analyses of Antarctic krill acoustic data

   Abstract:  Data from the acoustic surveys of MV SA "Aghulas" and FRV "Walter Herwig", and the 1981 RRS "John Biscoe" South Georgia acoustic survey were analyzed by geostatistical methods. Estimates of mean density (g m-2) of krill and their variances are compared with

   Meeting Document : WG-EMM-95/76 : Auteur(s): Murray, A.W.A.

3. Report of CEMP activities carried out in Cape Shirreff during the Antarctic season 1994/95

   Author(s):  Torres, D. Title:  Report of CEMP activities carried out in Cape Shirreff during the Antarctic season 1994/95 Approval:  Approved

   Meeting Document : WG-EMM-95/77 : Auteur(s): Torres, D.

4. Variation in the diet of the blue-eyed shag Phalacrocorax atriceps throughout the breeding season at Half-Moon Island, South Shetland Islands

   Abstract:  One hundred and seventy three regurgitated casts of the blue-eyed shag or imperial cormorant Phalacrocorax atriceps were collected in a colony at Half-moon Island, South Shetland Islands, by weekly sampling throughout the breeding season from December 1993 to February 1994. Demersal

   Meeting Document : WG-EMM-95/78 : Auteur(s): Barrera-Oro, E., Casaux, R.

5. Comparison of the diet of the blue-eyed shag Phalacrocorax atriceps by the analysis of pellets and stomach contents

   Abstract:  A total of 45 pellets from the blue-eyed shag Phalacrocorax atriceps were collected in January 1994 at Duthoit Point, Nelson Island, South Shetland Islands. The analysis showed fish as the main prey, followed by octopods, polychaetes and gastropods. Notothenia coriiceps formed the bulk

   Meeting Document : WG-EMM-95/79 : Auteur(s): Silva, P., Coria, N., Favero, M., Casaux, R.

6. Temporal variation in Antarctic sea-ice: analysis of a long-term fast-ice record from the South Orkney Islands

   Abstract:  Detection of climate-induced change in marine ecosystems requires a knowledge of the underlying variability of the environment. This paper uses a range of datasets to investigate the interannual variability in Southern Ocean sea-ice dynamics. We present the first analysis of a series of

   Meeting Document : WG-EMM-95/80 : Auteur(s): Symon, C., Murphy, E.J., Priddle, J., Clarke, A.

7. The diet of the blue-eyed shag Phalacrocorax atriceps at Laurie Island, South Orkney Islands, as reflected by the analysis of stomach contents collected throughout the breeding season

   Abstract:  The analysis of twenty nine stomach contents collected in a colony close to Pirie Peninsula, South Orkney Islands, from 2 January to 18 February 1995, showed that fish were by far the main prey of the blue-eyed shag Phalacrocorax atriceps, followed by octopods, decapods and gammarids.

   Meeting Document : WG-EMM-95/81 : Auteur(s): Coria, N., Barrera-Oro, E., Casaux, R.

8. The diet of the blue-eyed shag Phalacrocorax atriceps during summer at Nelson Island, Antarctica: temporal variations and consumption rates

   Abstract:  One hundred and thirty nine stomach contents of the blue-eyed shag Phalacrocorax atriceps were sampled at Nelson Island, Antarctica, between 1 December 1994 and 2 February 1995. Fish were by far the main prey, followed by octopods, gammarids, euphausiids and polychaetes. Notothenia

   Meeting Document : WG-EMM-95/82 : Auteur(s): Silva, P., Barrera-Oro, E., Casaux, R., Favero, M., Coria, N.

9. New corrections factors for the quantification of fish represented in pellets of the blue-eyed shag Phalacrocorax atriceps

   Abstract:  A comparative analysis was carried out on stomach contents and pellets (=regurgitated cast) of the blue-eyed shag or imperial cormorant Phalacrocorax atriceps collected throughout the breeding season at Nelson Island, South Shetland Islands. This allowed to estimate correction factors

   Meeting Document : WG-EMM-95/83 : Auteur(s): Silva, P., Casaux, R., Favero, M., Barrera-Oro, E.

10. A methodological proposal to monitor changes in coastal fish populations by the analysis of pellets of the blue-eyed shag Phalacrocorax atriceps

    Abstract:  A proposal to monitor changes in coastal fish populations is presented in this document. The methodology considered is based in the analysis of regurgitated pellets of the blue-eyed shag Phalacrocorax atriceps. The fundaments of the proposal as well as the methods tested and the steps

    Meeting Document : WG-EMM-95/84 : Auteur(s): Barrera-Oro, E., Casaux, R.

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