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Stable isotope analysis of tissue samples to investigate trophic linkages of Antarctic toothfish (Dissostichus mawsoni) in the Ross and Amundsen Sea regions
, but δ 13 C for toothfish were similar in the two areas. The reason for this difference is as yet ... N and fish length, region, and year: (1) on average, larger toothfish fed on prey of higher trophic ... there for less than a year. Author(s): M.H. Pinkerton, S.J Bury, J.C.S. Brown, J. Forman and A ... were sampled by scientific observers on New Zealand vessels between 2005/06 and 2013/14. More than 100 ...
Meeting Document : WG-EMM-14/50 : Автор(ы): M.H. Pinkerton, S.J Bury, J.C.S. Brown, J. Forman and A. Kilimnik (New Zealand)
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Diseases outbreak threatens Southern Ocean albatrosses
for the Southern Ocean environment is today considered to be fishing activities, and especially ... controversial long-lining that is assumed to be the cause for the major decline of albatrosses and petrels ... observed recently. Here we show that two highly pathogenic diseases (worldwide spreading avian cholera ... , Erysipelas bacteria) are the major cause of the decline on Amsterdam Island of the large yellow-nosed ...
Meeting Document : WG-EMM-03/32 : Автор(ы): H. Weimerskirch (France)
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Demography of Antarctic krill in the Lazarev Sea (Subarea 48.6) and the Elephant Island area (Subarea 48.1) in 2004
-year- old (R1) and two-year-old krill (R2) were calculated for both areas, showing low values for R1 ... discussed for the Lazarev Sea. Information are given on the development of maturity stages and “re ... decline after the good krill years in 2001 and 2002. Krill density was lower in the Lazarev Sea, even ... and high, but different values for R2. Spatial distribution of krill density and size/age classes is ...
Meeting Document : WG-EMM-04/23 : Автор(ы): V. Siegel (Germany), V. Loeb (USA), B. Bergström (Sweden), S. Schöling (Germany), M. Haraldsson (Sweden), J. Kitchener (Australia), M. Vortkamp (Germany)
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Long-term changes in the size composition of fjord Notothenia rossii, Gobionotothen gibberifrons and Notothenia coriiceps at Potter Cove, after the 1978–1980 fishery in the area
Abstract: Fish samples collected through an overall period of 24 years at Potter Cove after the ... 1986/7 and the duration of the inshore phase of the species, which is known to last for 6-7 years. In ... years. After 1991/92 the densities, mean sizes and abundances do not depend on a single forcing event ... reported for the period 1983- 1991/2 is consistent with the increase in mean size observed between 1983 and ...
Meeting Document : WG-FSA-07/52 : Автор(ы): E.R. Marschoff, E.R. Barrera-Oro and N.S. Alescio (Argentina)
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Spatial and seasonal distribution of adult Oithona similis in the Southern Ocean: predictions using boosted regression trees
of the cyclopoid copepod Oithona similis in the Southern Ocean. Nearly 20 000 samples from the ... waters. We demonstrate that it is possible to obtain reasonable models for both the presence (area under ... , with surface abundances 20% higher at night than during the day. There was no evidence of diel ... Scotia Sea, two areas off east Antarctica, in the frontal zone north of the Amundsen Sea, and a small ...
Meeting Document : WG-EMM-10/P14 : Автор(ы): M.H. Pinkerton, A.N.H. Smith, B. Raymond, G.W. Hosie, B. Sharp, J.R. Leathwick and J.M. Bradford-Grieve
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Age determination of the Antarctic fishes Champsocephalus gunnari and Notothenia rossii from South Georgia
necessity for an errorless estimation of age. Age determination can provide basic life history information ... 55 cm in 7 years. The lack of: the large size groups for Notothenia rossii may be indicative of over ... a fish's past history. As part of an effort to study Antarctic fish growth and population ... dynamics, investigations were performed on otoliths from the Antarctic fish Champsocephalus gunnari and ...
Meeting Document : SC-CAMLR-VI/BG/43 : Автор(ы): R. Radtke (USA)
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CCAMLR 2000 revisited
%), depending on whether two- or three-frequencies are used for krill identification, respectively. At 38 kHz ... Abstract: The total abundance of krill in the Scotia Sea was estimated from an international ... Antarctic Treaty's Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) to ... revise the precautionary catch level for krill in the area from 1.5 to 4 Mt (SC-CAMLR, 2000). By ...
Meeting Document : WG-EMM-07/30 Rev. 1 : Автор(ы): D.A. Demer, A.M. Cossio and C.S. Reiss (USA)
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Conservation of Antarctic pack-ice seals with increasing krill fishing and environmental change
impact on an already highly variable krill biomass, sea-ice loss of 66% has already occurred, and it ... could be an area of expansion for the fishery in the future. Uncertainty in krill and seal stock trends ... data to support a management based on specific conservation objectives for pack-ice seals. Author(s ... suitable seal habitat has declined between 21 and 28% over a 30 year period; krill density has potentially ...
Meeting Document : WS-MPA-11/24 : Автор(ы): J. Forcada, P.N. Trathan (UK), P.L. Boveng (USA), I.L. Boyd (UK), D.P. Costa (USA), M. Fedak (UK), T.L. Rogers and C.J. Southwell (Australia)
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Competition-induced starvation drives large-scale population cycles in Antarctic krill
Abstract: Antarctic krill (Euphausia superba)—one of the most abundant animal species on Earth ... , we identify intraspecific competition for food as the main driver of the krill cycle, while external ... , with drastic consequences for the entire Antarctic ecosystem. Author(s): A.B. Ryabov, A.M. de Roos, B ... responsibility for releasing documents: Australia ...
Meeting Document : WG-EMM-18/P05 : Автор(ы): A.B. Ryabov, A.M. de Roos, B. Meyer, S. Kawaguchi and B. Blasius
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Estimating nest-level phenology and reproductive success of colonial seabirds using time-lapse cameras
Abstract: We wish to draw the attention of Members to an online application of the R code ... ) implements the methods of the paper and provides summary outputs for direct input to CEMP A6b and A9 eforms ... . The abstract of the paper follows: Summary 1. Collecting spatially extensive data on phenology and ... reproductive success is important for seabird conservation and management, but can be logistically challenging ...
Meeting Document : WG-EMM-18/P01 : Автор(ы): J.T. Hinke, A. Barbosa, L.M. Emmerson, T. Hart, M.A Juáres, M. Korczak-Abshire, G. Milinevsky, M. Santos, P.N. Trathan, G.M. Watters and C. Southwell
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