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CCAMLR

Comisión para la Conservación de los Recursos Vivos Marinos Antárticos

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  1. Adélie penguin foraging behaviour and breeding success in seasons of contrasting krill availability (Mawson Coast, Antarctica)

    penguins at the Béchervaise Island CEMP site were compared between seasons of contrasting krill ... particularly apparent during the late guard to early crèche stages of chick rearing, coinciding with the timing ... of the krill survey. Chick mortality peaked during this period also. The findings illustrate the ... sensitivity of parameters A5 and A8 to prey availability during the short time scale of the chick rearing ...

    Meeting Document : WG-EMM-03/44 : Autor(es): J. Clarke, M. Tierney, S. Candy, S. Nicol, L. Irvine and K. Kerry (Australia)

  2. Demography and population trends of the Atlantic yellow-nosed albatross

    of breeding birds was strongly correlated between the two islands, and over the whole study period ... both study populations have trended downward at around 1.2% per year. The number of established ... breeders on Gough Island has declined more rapidly, and significantly, at an annual rate of 2.3 ... %. Monitoring established breeders maybe a sensitive means of detecting population trends. Average breeding ...

    Meeting Document : WG-FSA-03/37 : Autor(es): R. Cuthbert (United Kingdom), P.G. Ryan, J. Cooper (South Africa) and G. Hilton (United Kingdom)

  3. Foraging movements of the shy albatross Diomedea cauta breeding in Australia; implications for interactions with longline fisheries

    Abstract:  Satellite telemetry was used to identify the foraging zones of Shy Albatrosses Diomedea ... Branca to the south) to assess their level of interaction with longline fisheries. Adult birds from both ... Branca foraged between the colony and the southeastern edge of the continental shelf. The distances ... travelled by the birds and the duration of their foraging trips varied during the breeding cycle and tended ...

    Meeting Document : WG-FSA-98/33 : Autor(es): N. Brothers, R. Gales, A. Hedd and G. Robertson (Australia)

  4. RELEVANT ISSUES IN REGARDS TO THE MANAGEMENT OF ANTARCTIC KRILL FISHERIES IN AREA 48

    magnitude of the scientific uncertainties and data gaps affecting the subdivision of precautionary catch ... the data obtaining process financially. The discussion of that issue at 2009 WG-EMM meeting will be ... useful in a course of the consideration a decision on a Stage 1 allocation. In addition, this meeting ... monitoring plan for krill in Area 48. Due to the high level of risk associated with maintaining the current ...

    Meeting Document : WG-EMM-09/31 : Autor(es): L. Pshenichnov and G. Milinevsky (Ukraine)

  5. Dynamics of Antarctic penguin populations in relation to inter-annual variability in sea-ice distribution

    Abstract:  To investigate the role of sea ice cover on penguin populations we used principal ... component analysis to compare population variables of Adélie (Pygoscelis adeliae) and chinstrap (Pygoscelis ... population size remained stable, whereas that of chinstrap penguins decreased slightly. For neither species ... apparent inverse density-dependent relationship between the number of Adélie breeding pairs and the number ...

    Meeting Document : WG-EMM-96/10 : Autor(es): Murphy, E.J., Croxall, J.P., Trathan, P.N.

  6. Estimates of primary production by ice algae and phytoplankton in the coastal ice-covered area near Syowa Station, Antarctica

    Abstract:  Annual primary production of ice algae and phytoplankton under fast ice near Syowa ... February 1983 to January 1984 was calculated with a mathematical model based on measured parameters of ... solar radiation, day length, attenuation coefficients of snow, ice and water, chlorophyll a standing ... -2 h-1 in June to 13.3 E m-2 h-1 in December. Relative light intensity estimated at the bottom of sea ...

    Meeting Document : WG-KRILL-93/28 : Autor(es): H. Satoh, K. Watanabe and T. Hoshiai (Japan)

  7. Orientation of Antarctic krill in an aquarium

    slightly less than that when animals were hovering, 49.7° (SD=7.5°, N=50). Such an acute angle of elevation ... . Although mature females with marked swelling of the cephalothorax were not included in the experiment, the ... center of mass was found to be situated more to the anterior than in males and immature females. The ... hovering orientation, which is close to average body orientation, of mature males and mature females was ...

    Meeting Document : WG-KRILL-93/24 : Autor(es): Y. Endo (Japan)

  8. Blue-eyed shags as indicators of changes in ittora fish populations

    Abstract:  The use of Shag’s pellets as an appropriate technique to monitor the abundance of ... littoral fish populations is presented for consideration of the CCAMLR Ecosystem Monitoring Program Working ... Group. The effectiveness of the method is based on the very good agreement found between the fish ... species identified by the examinations of otoliths present in regurgitated cast and those regularly ...

    Meeting Document : WG-CEMP-93/25 Rev. 1 : Autor(es): R. Casaux and E. Barrera-Oro (Argentina)

  9. Target strength of Antarctic krill

    Abstract:  In-situ measurements of individual krill target strength are presented (modal value ... reproductively mature and averaged 47.44mm in length. Results agree well with recent predictions of acoustic ... target strength based on extrapolations of other field experiments using the bent cylinder model of sound ... scattering by elongated zooplankters. The modal value of the measurements is 6.7dB lower than that predicted ...

    Meeting Document : WG-KRILL-91/13 : Autor(es): R.P. Hewitt and D.A. Demer (USA)

  10. Ingestion of anthropogenic articles by seabirds at Macquarie Island

    regurgitations and the stomachs of seabirds at Macquarie Island; these were ingested both at sea and on land ... . Eight percent of regurgitated casts from Macquarie Island Cormorants contained polystyrene beads ... . Plastic particles were recorded from the stomachs of Southern Giant Petrels, Subantarctic Skuas, and Kelp ... Gulls. Birds examined in 1988 had a higher frequency of occurrence of foreign objects than birds ...

    Meeting Document : CCAMLR-VIII/BG/12 : Autor(es): D.J. Slip, K. Green and E. Woehler (Australia)

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Correo electrónico: ccamlr [at] ccamlr [dot] org
Teléfono: +61 3 6210 1111
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Dirección: 181 Macquarie Street, Hobart, 7000, Tasmania, Australia

 

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