Résultats de la recherche
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Overview and update of Australia’s scientific tagging program in the Patagonian toothfish (Dissostichus eleginoides) fishery in the vicinity of Heard and McDonald Islands (Division 58.5.2)
Abstract: Australia has conducted a scientific tagging program in the Dissostichus eleginoides ... fishery in 58.5.2 since the 1997/98 season. This program has yielded data which has assisted with ... . Tagging effort and recaptures are very concentrated in a relatively small area of this species’ habitat in ... this Division. Furthermore, as toothfish appear to have complex patterns of movement in space and time ...
Meeting Document : WG-FSA-07/48 Rev. 1 : Auteur(s): D.C. Welsford, T. Lamb and G.B. Nowara (Australia)
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A spatial multi-species operating model (SMOM) of krill–predator interactions in small-scale management units in the Scotia Sea
dynamics is developed in response to requests for scientific advice regarding the subdivision of the ... precautionary catch limit for krill among 15 small-scale management units (SSMUs) in the Scotia Sea to reduce ... of krill in each of the SSMUs, as well as the numbers of predator species in each of these areas. The ... numerous uncertainties regarding the choice of parameter values, a Reference Set is used in preference to a ...
Meeting Document : WG-EMM-06/12 : Auteur(s): É. Plagányi and D. Butterworth (South Africa)
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Comparison of long-term trends in abundance, recruitment and reproductive success of five populations of Pygoscelis penguins in the South Shetland Islands, Antarctica
Abstract: Responses of predator populations to environmental variability in the Antarctic have ... tended to exhibit site- and species-specific differences owing to variation in geographic settings and ... responses of sympatric congeners to recent changes in their Antarctic ecosystem. We used simple linear ... regression and correlation analyses to detect and compare trends in indices of population abundance ...
Meeting Document : WG-EMM-06/21 : Auteur(s): J.T. Hinke (USA), K. Salwicka (Poland), S.G. Trivelpiece, G.M. Watters and W.Z. Trivelpiece (USA)
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Results from the New Zealand exploratory fishery for Dissostichus spp. in Divisions 58.4.1 and 58.4.2 in the 2004/05 season
Abstract: The New Zealand longliners Janas and San Aspiring were authorised to operate in the ... Exploratory Fishery in Divisions 58.4.1 and 58.4.2 during the 2004-05 season. The results from their first ... season in this fishery are presented. Janas undertook 44 sets in Division 58.4.2 for a catch of 37.9 ... tonnes of D. mawsoni and 0.395 tonnes of D. eleginoides. Two sets were undertaken in Division 58.4.1 SSRU ...
Meeting Document : WG-FSA-05/62 : Auteur(s): G.J. Patchell (New Zealand)
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Examination of the characteristics of the fishery for Dissostichus eleginoides in the CCAMLR Statistical Subarea 48.3 and its implications on estimating trends in catch per unit effort
and random in haul-by-haul catch and effort data from the longline fishery for Dissostichus ... eleginoides in Subarea 48.3. We concentrate on presenting the results of preliminary work on the potential ... fishing effort (number of hooks on a line) has changed in its fishing properties over time, and if soak ... Dissostichus eleginoides is not uniformly distributed in its range. In some years, though not all, the fishery ...
Meeting Document : WG-FSA-SAM-05/17 : Auteur(s): A.J. Constable, S.G. Candy and B. Raymond (Australia)
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Trends in bird and seal populations as indicators of a system shift in the Southern Ocean
over the past 50 years in the southern Indian Ocean, the increase starting in mid 1960s and stabilizing ... in mid 1980s, being particularly important in the in the sub-Antarctic sector. At the same time with ... . These changes, together with the indications of a simultaneous decrease in secondary production in sub ... occurred in the Indian Ocean part of the Southern Ocean. This shift illustrates the high sensitivity of ...
Meeting Document : WG-EMM-03/53 : Auteur(s): H. Weimerskirch, P. Inchausti, C. Guinet and C. Barbraud (France)
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GROUNDFISH SURVEY IN CCAMLR SUB-AREA 48.3 IN APRIL 2008 WITH PRELIMINARY ASSESSMENT OF MACKEREL ICEFISH
Abstract: In April 2008 the UK undertook a bottom trawl survey of CCAMLR Sub-Area 48.3 on the FV ... + and 3+ fish, with differences in the size between Shag Rocks and South Georgia and with few small fish ... in the NW South Georgia area. A preliminary short-term projection of the mackerel icefish stock was ... run using standard CCAMLR parameters in the GYM. Two scenarios were tested, both assumed that all the ...
Meeting Document : WG-FSA-08/28 : Auteur(s): M.A. Collins, R.E. Mitchell, C.E. Main, J. Lawson, J. Watts, J. Slakowski, L. Featherstone and O. Rzewuski (UK)
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Age distribution of breeding female Antarctic fur seals in relation to changes in population growth rate
Georgia, in 1988 was compared with the age distribution of a sample obtained in 1971-1973. The mean age in ... 1971-1973 was 7.41 (SE = 0.26) years and in 1988 it was 6.93 (SE = 0.20) years. After correction for ... age-dependent arrival time at the pupping beach in 1988, the mean age was 6.22 (SE = 0.14 years ... ), which was significantly lower than in 1971-1973. Indicators of population size suggested that population ...
Meeting Document : WG-CEMP-91/21 : Auteur(s): I.L. Boyd, N.J. Lunn, P. Rothery and J.P. Croxall (United Kingdom)
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Fatty acid analysis to infer diet of Antarctic toothfish caught in February 2012 in the southern Ross Sea
Abstract: To infer important prey resources for Antarctic toothfish (Dissostichus mawsoni) in the ... south of SSRUs 881.J and 881.L in the southern Ross Sea, their lipid composition was determined and ... compared tolipid profiles of fish and invertebrate species taken as bycatch in the fishery or collected ... of pre-recruit toothfish from research vessel in February 2012. Results of fatty acid (FA) and stable ...
Meeting Document : WG-FSA-12/61 : Auteur(s): I. Yeon, H.-S. Jo, C. Lim (Republic of Korea), S.M. Hanchet (New Zealand), D.-W. Lee and C.-K. Kang (Republic of Korea)
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White-chinned petrel incidental mortality event in the Subarea 48.3 Patagonian toothfish fishery during the season extension period in the 2013/14 season
Abstract: During the 2014 experimental season extension in CCAMLR sub-Area 48.3 a single line ... caught 74 white chinned petrels, which is the most significant incidental mortality event in the fishery ... seabird mortality in the fishery undertaken. The mortality event occurred on a “Spanish” system longline ... that was partly set after Nautical Twilight (dawn), so was in breach of CM25-02. Although the line was ...
Meeting Document : WG-FSA-14/28 : Auteur(s): M.A Collins, M. Soffker, C. Darby, K. Ross and P.N. Trathan (United Kingdom)