Résultats de la recherche

1. Assessing the accuracy of penguin breeding abundance estimates at regional scales in Antarctica from existing count data: a review using Adélie penguins as a case study

   Abstract:  There is a large body of existing count data in the literature for penguins at their breeding sites in Antarctica and the sub-Antarctic islands. These data have been summarised into several compilation documents and their accuracy assessed therein on a site-by-site basis. There has been

   Meeting Document : WG-EMM-04/55 : Auteur(s): C. Southwell (Australia)

2. Developing and applying a general abundance estimator for land-based predator surveys: Adélie penguins as a case study

   Abstract:  The development of a general estimator of abundance would facilitate a standardised approach to regional and circum-Antarctic surveys of land-based predators. Such a generalised estimator is outlined, and its applicability illustrated by adapting it to the specific problem of estimating

   Meeting Document : WG-EMM-04/56 : Auteur(s): C. Southwell (Australia)

3. Changes in the foraging range of Adélie penguins as the breeding season progresses

   Abstract:  1. This paper describes temporal changes in foraging range throughout the breeding season of Adélie penguins nesting at Béchervaise Island on the Mawson coast of Eastern Antarctica. A decade’s worth of satellite tracking data was loaded into geographical information systems (GIS)

   Meeting Document : WG-EMM-04/57 : Auteur(s): J. Clarke and L. Emmerson (Australia)

4. Developing conceptual models of the Antarctic marine ecosystem: squid

   Abstract:  The Convention for the Conservation of Antarctic Marine Living Resources (CCAMLR) is currently considering plausible models of the Southern Ocean ecosystem within the Working Group on Ecosystem Monitoring and Management (WG-EMM). While recognised to be an important component of this

   Meeting Document : WG-EMM-04/26 : Auteur(s): K. Phillips (Australia)

5. 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 the basis of the data of two complex surveys carried out in the western Atlantic sector of Antarctic in summer 1984 and 1988. The large-length grouping is biotopically associated with the waters of the

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

6. Accounting for food requirements of seabirds in fisheries management – the case of the South African purse-seine fishery

   Abstract:  In South Africa, four seabirds that feed mainly on sardine Sardinops sagax and anchovy Engraulis encrasicolus all have an unfavourable conservation status or a small population: African penguin Spheniscus demersus, Cape gannet Morus capensis, Cape cormorant Phalacrocorax capensis and

   Meeting Document : WG-EMM-04/28 : Auteur(s): R.J.M Crawford (South Africa)

7. Counts of surface-nesting seabirds at Marion Island in 2003/04

   Abstract:  Numbers of gentoo penguins Pygoscelis papua, macaroni penguins Eudyptes chrysolophus, eastern rockhopper penguins E. chrysocome filholi and Crozet shags Phalacrocorax [atriceps] melanogenis continued to decrease at Marion Island in 2003/04. The decreases are thought to be due to a

   Meeting Document : WG-EMM-04/29 : Auteur(s): R.J.M Crawford, N. de Bruyn, B.M. Dyer, B. Hanise, N.T.W. Klages, P.G. Ryan, L.G. Underhill and L. Upfold (South Africa)

8. Approaches to evaluating and testing of CEMP methods for parameters A1, A5 and A7

   Abstract:  The methods and presentation of CEMP parameters A1, A5 and A7 where evaluated using simulated time-series data. The effects of sampling timing and intensity during five-day periods for measures of arrival and fledging mass suggested that situations where sampling is distributed unevenly

   Meeting Document : WG-EMM-04/60 : Auteur(s): G. Watters (USA) and K. Reid (United Kingdom)

9. Approaches to the simplification of the summary and presentation of CEMP data

   Abstract:  The current approach to providing advice on the status of the krill-centric ecosystem relies on the evaluation of statistical anomalies in the CEMP database. A new approach based on the ordination of variables according to functional groupings is suggested. This approach uses the

   Meeting Document : WG-EMM-04/61 : Auteur(s): K. Reid (United Kingdom) and G. Watters (USA)

10. An initial analysis of the characteristics of Antarctic krill taken by the commercial fishery and Antarctic fur seals during the winters of 2002 and 2003 at South Georgia

    Abstract:  We present an initial analysis of the fishing locations, fishing depth and length-frequency distribution of krill at South Georgia during the winter of 2002 and 2003 and compare these with the length-frequency distribution and frequency of occurrence of krill in the diet of Antarctic fur

    Meeting Document : WG-EMM-04/62 : Auteur(s): K. Reid, D.J. Agnew, N.L. Warren and E. Owen (United Kingdom)

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