Résultats de la recherche

1. Marine debris surveys at Bird Island, South Georgia 1990 to 1995

   reduce entanglement of marine mammals and birds. Overall, and in all but one year, the highest incidence ... category overall (76 %), and in all samples since 1991, was pieces of synthetic lone as used in the ... %) and polythene bags (6 %) were the next commonest items. There was a substantial increase in the number ... of items found ashore in 1995 which coincided with an apparent increase in long-line fishing effort ...

   Meeting Document : CCAMLR-XV/BG/05 : Auteur(s): Delegation of the United Kingdom

2. Conflict or co-existence? Foraging distribution and competition for prey between Adélie and chinstrap penguins

   and ecologically very similar, have very similar diet and breed sympatrically in the Scotia Arc from ... penguins and 24 chinstrap penguins were used to compare foraging distributions. In both years the diet of ... both species was exclusively Antarctic krill (Euphausia superba) of the same size range. In a year of ... between the two species, however, in a year of normal resource availability (2001) there was no such ...

   Meeting Document : WG-EMM-02/15 : Auteur(s): A.S. Lynnes, K. Reid, J.P. Croxall and P.N. Trathan (United Kingdom)

3. The biology of the spiny icefish (Chaenodraco wilsoni Regan, 1914)

   Abstract:  The most abundant icefish species observed in catches off the northern tip of the ... Antarctic Peninsula in the last 25- 30 years has been the spiny icefish Chaenodraco wilsoni Regan 1914. C ... Joinville – D’Urville Islands (CCAMLR Statistical Subarea 48.1) and in the Cosmonauts and Cooperation Seas ... and Prydz Bay in the Indian Ocean sector (CCAMLR Statistical Division 58.4.2). This paper presents new ...

   Meeting Document : WG-FSA-07/P1 : Auteur(s): K.-H. Kock, L.V. Pshenichnov, C.D. Jones, J. Gröger and R. Riehl. (Polar Biol., 31 (3): 381–393 (2007))

4. Monitoring krill population variability using seabirds and seals at South Georgia – new samplers provide new insights

   Abstract:  Variability in the Southern Ocean is often characterised by fluctuations in the ... South Georgia interannual variability in the krill-based marine ecosystem has historically been most ... frequently detected in the response of upper-trophic level predators. Analysis of the changes in the ... population size structure of krill in the diet of Antarctic fur seals Arctocephalus gazella, particularly ...

   Meeting Document : WG-EMM-04/63 : Auteur(s): K. Reid, E.J. Murphy, J.P. Croxall and P.N. Trathan (United Kingdom)

5. Multiple acoustic estimates of krill density at South Georgia during 2000/2001 reveal significant intra-annual and spatial variability

   around South Georgia in the 2000/2001 season: in October 2000 (early-season); during late December ... / early January 2000/2001 (mid-season), and in March 2001 (late-season). The surveys were the first in a ... early1980s). We hoped that conducting several surveys in one season would provide information on short-term ... variability that could be used to set data from more restricted “snap-shot” cruises in a broader context. The ...

   Meeting Document : WG-EMM-01/15 : Auteur(s): A.S. Brierley, C. Goss, S.A. Grant, J.L. Watkins, K. Reid, M. Belchier, I. Everson, M.J. Jessop, V. Afanasyev and J. Robst (United Kingdom)

6. EXPECTED TAG RECAPTURE RATES FROM NEW AND EXPLORATORY FISHERIES FOR DISSOSTICHUS SPP.

   Abstract:  Tag recapture rates in new and exploratory Dissostichus spp. fisheries in the southern ... Indian Ocean sector of the CCAMLR area are examined. In particular, the potential for tagging programs in ... new and exploratory fisheries to yield sufficient data to be of use in determining TAC’s in the early ... , tag detection rates, natural mortality, fish movement out of the fishery, and IUU removals in order to ...

   Meeting Document : WG-FSA-08/63 : Auteur(s): J.P. McKinlay and D.C. Welsford (Australia)

7. Educational poster on hook ingestion

   hooks discarded in fish heads which ingestion by seabirds, especially wandering albatrosses which are ... large enough to swallow fish heads whole (SC-CAMLRR-XXI/BG/7). For example, in 2001/02 the scientific ... observer on the F/V Argos Helena estimated that >15,000 fish heads were discarded with hooks still in ... them. The hooks found in albatross colonies at South Georgia in years prior to 2001/02 were of the type ...

   Meeting Document : WG-FSA-07/20 : Auteur(s): G. Robertson (Australia)

8. Seabird research at Cape Shirreff, Livingston Island, Antarctica, 2003–2004

   examine trends in penguin populations, as well as inter-annual variation in reproductive parameters ... decline over the past five years, and is at its lowest size in the past seven years of study. While the ... gentoo breeding population increased slightly from last year, it is at its second lowest size in the past ... seven years. Chinstrap fledging success was higher during the 2003-04 breeding season than in the ...

   Meeting Document : WG-EMM-04/5 : Auteur(s): M. Antolos, A.K. Miller and W.Z. Trivelpiece (USA)

9. Krill population dynamics at South Georgia 1991–1997, based on data from predators and nets

   scientific nets from the same area over the summers of 1991-1997. In comparing the 5 years with both predator ... samples from Antarctic fur seal and macaroni penguin combined; least temporal variation occurs in predator ... in 1991 and 1994, both years of low krill biomass at South Georgia. In both of these years large ... of the March krill population showed a regular increase from 1991 to 1993, fell to a minimum in 1994 ...

   Meeting Document : WS-AREA 48-98/15 : Auteur(s): K. Reid, J. Watkins, J. Croxall and E. Murphy (UK)

10. Diet of grey-headed albatrosses at the Diego Ramírez Islands, Chile: ecological implications

    prey hard parts present in 103 chick regurgitates obtained during breeding seasons 2000, 2001 and 2002 ... . The squid Martialia hyadesi predominated in the diet samples in 2001 and 2002 (89% and 81% of ... reconstituted mass), but was absent from the 2000 samples. Reconstituted mean mass per sample in 2000 was ... significantly lower than in 2001 and 2002. Chick growth rate during 2000 was also the lowest recorded. This ...

    Meeting Document : WG-FSA-04/12 : Auteur(s): J. Arata (Chile), G. Robertson (Australia), J. Valencia (Chile), J.C. Xavier (UK) and C.A. Moreno (Chile)

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