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1. A three-frequency method to determine the abundance and the size of two euphausiid species (Euphausia superba and Euphausia crystallorophias)

   role in the Ross Sea pelagic ecosystem (Marr, 1962; Azzali et al., 1999). To estimate the abundance of ... of the net and to the net avoidance (Wiebe, 1972; Everson and Bone, 1986). This last bias affects ... obtain information about the mean size (length) of the organisms in each aggregation. In principle the ... abundance of the two populations can be estimated by single-frequency acoustics, using the standard echo ...

   Meeting Document : WG-EMM-01/63 : Автор(ы): M. Azzali, J. Kalinowksi, G. Lanciani and I. Leonori (Italy)

2. The use of CCAMLR Statistical Subareas 88.1 and 88.2 and Division 58.4.1 by Macquarie Island giant petrels

   enter CCAMLR waters, one bird undertook a longer trip into division 58.4.1, where it spent 6% of its ... overall time at sea. We consider it possible that this trip may have been indicative of trips undertaken ... adult northern giant petrels (Macronectes halli), and two fledgling chicks of each species during the ... summer of 2005-06. Adults of both species spent time in areas under CCAMLR jurisdiction. Adult southern ...

   Meeting Document : WG-FSA-06/49 : Автор(ы): R. Trebilco, R. Gales, B. Baker and A. Terauds (Australia)

3. Quantifying vessel performance in the CCAMLR tagging program: spatially and temporally controlled measures of relative mortality and tag-detection rates

   can derive meaningful indices of relative performance of groups of fishing effort (e.g. vessel, trip ... , etc). We developed indices of (i) the mortality (or loss of all tags) of released fish and (ii) the ... CCAMLR of a number of toothfish fisheries in Antarctica, but the evaluation of tagging performance has ... been thus far inconclusive because the confounding effect of factors such as time and location of ...

   Meeting Document : WG-FSA-12/47 Rev. 1 : Автор(ы): S. Mormede and A. Dunn (New Zealand)

4. Infectious diseases of Antarctic penguins: current status and future threats

   alterations due to climate change: the Western Antarctic Peninsula, the Ross Sea, and coastal regions of East ... System, means that our understanding is still patchy. A feather loss condition of unknown etiology ... Sea, and coastal regions of East Antarctica. We propose possible steps towards the goal of ... Antarctica. From previous reports we know that penguin species are highly susceptible to a number of ...

   Meeting Document : WG-EMM-14/53 : Автор(ы): W.W. Grimaldi, P.J. Seddon, P.O.B. Lyver, S. Nakagawa and D.M. Tompkins (New Zealand)

5. Tooth growth in male Antarctic fur seals (Arctocephalus gazella) from South Georgia: an indicator of long-term growth history

   died of natural causes at Bird Island. South Georgia, was quantified from measurements of annual layers ... provided an indication of body growth, Tooth growth rate was lowest in seals which died early (age 4 years ... Abstract:  Growth of upper canine teeth of male Antarctic fur seals (Arctocephalus gazella) which ... in longitudinal sections of teeth. Mean age at death was 7∙69 ± 0∙07 years and this showed a small ...

   Meeting Document : WG-CEMP-93/11 : Автор(ы): I.L. Boyd and J.P. Roberts (United Kingdom)

6. COLLAPSE OF SOUTH AFRICA’S PENGUINS IN THE EARLY 21ST CENTURY

   from about 56 000 pairs in 2001 to some 21 000 pairs in 2009, a loss of 35 000 pairs (>60%) in eight ... anchovy. In this province, there was a south-east displacement of prey around 2000, which led to a ... Abstract:  The number of African penguins Spheniscus demersus breeding in South Africa collapsed ... classification of the species as Endangered. In South Africa, penguins breed in two regions, the Western Capeand ...

   Meeting Document : WG-EMM-11/P8 : Автор(ы): 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

7. Relative abundance of large whales around South Georgia

   mother-calf pair was observed off the Shag Rocks in February 1997. Extirpation of animals from this ... Abstract:  To assess large whale stocks following the cessation of land-based South Georgia ... Island (NW of South Georgia) between 1979 and 1998, and mariner sightings between 1992 and 1997. All ... particular feeding ground is the most likely reason for ongoing low numbers of all species. Other factors may ...

   Meeting Document : WG-EMM-99/34 : Автор(ы): M.J. Moore (USA), S.D. Berrow (UK), B.A. Jensen (USA), P. Carr (UK), R. Sears (Canada) and V.J. Rowntree, R. Payne and P.K. Hamilton (USA)

8. By-catch of rays in the 2002/03 toothfish fishery around South Georgia

   the number of rays that were likely to have died as a result of being caught on longlines using a ... survival and conservation of rays; • It was the first in which very good quality information was available ... from all observers’ tally periods on the catch rates of rays cut off the line; • In 2003 the UK, with ... the cooperation of Chile and one fishing company, undertook an experiment to determine the ...

   Meeting Document : WG-FSA-03/58 : Автор(ы): D.J. Agnew, J. Pearce and M. Endicott (United Kingdom)

9. MULTIPLE TIME SCALES OF VARIABILITY IN THE KRILL POPULATION AT SOUTH GEORGIA

   conducted in the early, middle and late period of the summers of 2001 to 2005, together with krill ... abundance was highest during the middle of the summer in 3 years and in the late period in 2 years; in the ... Abstract:  The South Georgia region supports a high biomass of krill that is the subject to high ... inter-annual variability. The lack of a self-sustaining krill population at South Georgia means that ...

   Meeting Document : WG-EMM-08/48 : Автор(ы): K. Reid, J. Watkins, E. Murphy, P. Trathan, S. Fielding and P. Enderlein (United Kingdom)

10. ANTARCTIC FUR SEAL PUP PRODUCTION AND POPULATION TRENDS IN THE SOUTH SHETLAND ISLANDS WITH SPECIAL REFERENCE TO SOURCES OF ERROR IN PUP PRODUCTION ESTIMATES

    seal predation was estimated from the rate of mother-pup failed pairs after pups begin entering the ... Abstract:  This paper reports the results of a ground survey of fur seal colonies from in the ... South Shetland Islands in 2007/08. Multiple counts of pups at each colony were conducted to establish ... census in 2001/02 (10,057 ±142 pups born). Dead pups accounted for 1.64% of the total. A comparison with ...

    Meeting Document : WG-EMM-PSW-08/14 : Автор(ы): M.E. Goebel (USA), D.E. Torres C. (Chile), A. Miller, J. Santora, D. Costa (USA) and P. Diaz (Chile)

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