Resultados de la búsqueda
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COLLAPSE OF SOUTH AFRICA’S PENGUINS IN THE EARLY 21ST CENTURY
Abstract: The number of African penguins Spheniscus demersus breeding in South Africa collapsed ... years. This reduced the global population to 26 000 pairs, when including Namibian breeders, and led to ... 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 : Autor(es): 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
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Preliminary report on IWC-SO GLOBEC collaborative research in the western Antarctic Peninsula study area, March–June 2001
Abstract: The first three cruises in the 'year round' Southern Ocean GLOBEC series for ... on the vessels by the IWC. Passive acoustic moorings and expendable sonobuoys were deployed by the US ... passive acoustic team. The most frequently recorded and abundant baleen whale species in the study area ... correlation between autumn and early winter baleen whale distribution, the inshore cold Antarctic coastal ...
Meeting Document : SC-CAMLR-XX/BG/29 : Autor(es): Observer (IWC)
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To what extent do type C killer whales (Orcinus orca) feed on Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea, Antarctica?
type C killer whales in other locations on the Ross Sea shelf (e.g. Terra Nova Bay, Bay of Whales ... , Sulzberger Bay) or at the scale of the whole Ross Sea shelf and slope. Basic information necessary to ... Abstract: Information on type C killer whales in the Ross Sea region is reviewed, in particular ... on the trophic overlap between type C killer whales and Antarctic toothfish. Killer whale population ...
Meeting Document : WG-EMM-13/29 : Autor(es): L. Torres, M.H. Pinkerton (New Zealand), R. Pitman, J. Durban (USA) and R. Eisert (New Zealand)
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Seals: Trophic modelling of the Ross Sea
Description / Abstract: A supporting document to the CCAMLR Science paper: M.H. Pinkerton, J.M ... . Bradford-Grieve and S.M. Hanchet. 2010. A balanced model of the food web of the Ross Sea, Antarctica ... the importance of toothfish as a prey item for seals, but no results are available. Pinkerton et ... occasionally scavenge from carcasses of whales. Fish in the diets off Prydz Bay were largely unidentified, but ... months (Brownell & Ainley 1976; Ainley 1985: Table 4) and no southern elephant seals in the Ross Sea ... Seals Seals: Trophic modelling of the ...
Document : Site Section: Publications
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Defining smaller-scale management units to further develop the ecosystem approach in managing large-scale pelagic krill fisheries in Antarctica
Paper Title: Defining smaller-scale management units to further develop the ecosystem approach in ... the principles and approach required for developing small-scale management units to take account of ... predators’ needs when managing the fishery for Antarctic krill. It provides a theoretical foundation for ... considering the scales of management units involving the integration of local populations of harvested species ... . 9 (2002): 117–131 117 DEFINING SMALLER-SCALE MANAGEMENT UNITS TO FURTHER DEVELOP THE ECOSYSTEM ... @aad.gov.au Abstract This paper discusses the principles and approach required for developing small-scale ... management units to take account of predators’ needs when managing the fi shery for Antarctic krill. It ... provides a theoretical foundation for considering the scales of manage- ment units involving the ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 117–131 : Autor(es): Constable, A.J. and S. Nicol
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Zooplankton: Trophic modelling of the Ross Sea
Description / Abstract: A supporting document to the CCAMLR Science paper: M.H. Pinkerton, J.M ... . Bradford-Grieve and S.M. Hanchet. 2010. A balanced model of the food web of the Ross Sea, Antarctica ... numbers of the total zooplankton in Terra Nova Bay with L. helicina being a major contributor to these ... the Ross Sea M.H. Pinkerton, J. Bradford-Grieve National Institute of Water and Atmospheric ... Euphausia crystallorophias is found preferentially in the shallower parts of the western Ross Sea (Makarov ... ), and in the eastern parts (Ackley et al. 2003). Distribution information (Azzali et al. 2006; Ackley ...
Document : Site Section: Publications
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Review of CCAMLR activities on monitoring marine debris in the Convention Area
for two species of seabird. This was the first submission from this site. Marine mammal entanglement ... Abstract: The current status of national programmes on monitoring of marine debris and their ... impact on marine mammals and seabirds in the Convention Area has been reviewed. The CCAMLR Marine Debris ... Database contains data from 13 sites, most within Area 48. There are 4 active sites that have data for more ...
Meeting Document : SC-CAMLR-XXVI/BG/10 : Autor(es): Secretariat
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Chilean krill fishery: analysis of the 1991 season
Abstract: This paper summarized the chilean catch data for 1991. Especial emphasis is given to ... the analysis of haul-by-haul data and its use in understanding small scale spatial distribution of ... fishing grounds. The results show that the krill fishery in subarea 48.1 is particularly intense near CEMP ... sites. Other uses of haul-by-haul data are suggestted. Author(s): Victor H. Marín et. al. Title ...
Meeting Document : WG-KRILL-91/39 : Autor(es): Victor H. Marín et. al.
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A composite recruitment index to describe interannual changes in the population structure of Antarctic krill at South Georgia
Paper Title: A composite recruitment index to describe interannual changes in the population ... substantial differences, due in part to bias arising from a large number of krill in just one of the station ... net hauls. Therefore, when the number of station net hauls is limited, bias is likely to be reduced if ... target net haul data can be included by using the composite recruitment index. This index is used to ... commercial fishery (Kawaguchi et al., 1998). However, to date there has been no information on the year-to ... spawning year, the status of 1993194 is less certain, because there is no datum for the RI estimation ... class structure observed in the Antarctic Peninsula and South Georgia. There is no recruitment data ... RECRUITMENT INDEX TO DESCRIBE INTERANNUAL CHANGES IN THE POPULATION STRUCTURE OF ANTARCTIC KRILL AT SOUTH ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 71–84 : Autor(es): Watkins, J.L
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The use of analysis of penguin stomach contents in simultaneous study of prey and predator parameters
Paper Title: The use of analysis of penguin stomach contents in simultaneous study of prey and ... sensitive to the statistical assumptions made during the analysis of data. The nested ANOVA method is ... proposed as being the correct approach for analysis because lack of independence between krill specimens ... found in the stomach of a given penguin prevents the pooling of krill lengths from different samples ... WG-CEMP-89/16 THE USE OF ANALYSIS OF PENGUIN STOMACH ... Size selectivity of krill by penguins is shown to be highly sensitive to the statistical assumptions ... made during the analysis of data. The nested ANOVA method is proposed as being the correct approach ... for analysis because lack of independence between krill specimens found in the stomach of a given ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 367–375 : Autor(es): Marschoff, E. and B. González