Search results
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Concordance of inter-annual fluctuations in densities of krill around South Georgia and Elephant Islands: biological evidence of same-year teleconnections across the Scotia Sea
Abstract: Acoustic estimates of the densities of Antarctic krill, Euphausia superba, in areas ... and 1997. Estimated densities of krill at El were most often higher than at SG, although this may ... simply have been a function of differences in survey and data analysis techniques used at each site. More ... interestingly, the magnitudes of abundance and between-year gradients of change of abundance at each site were ...
Meeting Document : WS-AREA 48-98/11 : Author(s): A.S. Brierley (UK), D.A. Demer, R.P. Hewitt (USA) and J.L. Watkins (UK)
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Important aspects of prey distribution for the formation of foraging areas of chinstrap penguins and Antarctic fur seals at Seal Island
Abstract: Variables of prey availability between inshore and slope/offshore foraging areas were ... compared to evaluate important factors for the formation of foraging areas of Chinstrap penguins ... (Pygoscelis antarctica) and Antarctic fur seals (Arctocephalus gazella) at Seal Island. Advantages of foraging ... those of foraging slope/offshore are: 3) less patchy krill distribution, 4) shallow krill distribution ...
Meeting Document : WG-EMM-97/28 : Author(s): Bengtson, J.L., Hiruki, L.M., Naganobu, M., Ichii, T., Meyer, W.R., Cameron, M.F., Boveng, P., Takao, T., Miura, A., Jansen, J.K., Kawaguchi, S., Hayashi, T.
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Program of research to improve the seabird by-catch mitigation effectiveness of the Spanish system of longline fishing
Abstract: This document seeks the approval of CCAMLR for a research plan to improve the seabird ... by-catch mitigation effectiveness of the Spanish system of longline fishing. The plan also aims to ... reduce the amount of fishing gear (and ghost fishing) lost in benthic habitats by Spanish system vessels ... weighting systems, including replacing with steel sinker weights the bags of rocks that are traditionally ...
Meeting Document : WG-FSA-05/12 : Author(s): G. Robertson (Australia) and C. Moreno (Chile)
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Results of scientific observation in Antarctic krill fishery in 2010/11: II. analysis of variability of krill size and fish by-catch
Abstract: We examined spatio-temporal variability of krill body length and number of bycatch fish ... as variables of interest based on the scientific observer data for the 2010/2011 fishing season. Both ... krill length and number of bycatch fish were analyzed by using a hierarchical Bayesian model composed of ... observation error. The parameters of the model were estimated by the Markov chain Monte Carlo (MCMC) method in ...
Meeting Document : WG-EMM-12/67 : Author(s): T. Okuda and M. Kiyota (Japan)
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Updated status of Notothenia rossii, Gobionotothen gibberifrons and Notothenia coriiceps in inshore sites of the South Shetland Islands: results of a long-term monitoring program (1983–2016) at Potter Cove
, to achieve a 33-year record, 1983-2016, to monitor changes in the prevalence of three species of ... around the South Shetland Islands: 1) a continuous increase in the abundance of N. rossii; 2) further ... decline in G. gibberifrons recruitment evidenced by the low proportions of juvenile fish; and 3) a high ... abundance of N. coriiceps. Results were also consistent with trends in seabirds that feed on juveniles of ...
Meeting Document : WG-FSA-16/02 : Author(s): E. Barrera-Oro, E. Marschoff and D. Ainley
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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 ... predator life-history strategies. Five populations of Pygoscelis penguins from King George Island and ... Livingston Island, South Shetland Islands, Antarctica, were examined to compare up to 25 years of data on the ... responses of sympatric congeners to recent changes in their Antarctic ecosystem. We used simple linear ...
Meeting Document : WG-EMM-06/21 : Author(s): J.T. Hinke (USA), K. Salwicka (Poland), S.G. Trivelpiece, G.M. Watters and W.Z. Trivelpiece (USA)
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Scientific background document in support of the development of a CCAMLR MPA in the Weddell Sea (Antarctica) – Version 2017 – Reflection of the recommendations by WG-EMM-16 and SC-CAMLR-XXXV
in support of the development of a CCAMLR MPA in the Weddell Sea. Germany was asked to carry out ... , the authors intend to update the CCAMLR Working Groups on the current state of the work carried out ... during the 2016/2017 intersessional period. Chapter 1 of this working group paper informs on the new data ... retrieval process. Chapter 2 presents the updated analyses of relevant data layers, including an update on ...
Meeting Document : WG-SAM-17/30 : Author(s): K. Teschke, H. Pehlke and T. Brey on behalf of the German Weddell Sea MPA (WSMPA) project team
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The results of investigations of the feeding of Antarctic toothfish D. mawsoni in the Ross Sea in 2005/06
Abstract: The works on study of the diet composition of Antarctic toothfish were conducted from ... December to March during the two fishery seasons (2004-2005 and 2005-2006) in different fishing areas of ... depths of 523-2000 m. The total length (TL) of individuals ranged from 49 to 201 cm with weight from 0.8 ... to 123 kg. In 2006 Antarctic toothfish was caught at depths of 478-1702 m and its TL ranged from 49 ...
Meeting Document : WG-FSA-06/17 : Author(s): A.F. Petrov (Russia)
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Use of a deep-water longline of the Spanish type and its modifications in the Russian research of Ross Sea toothfish during the season 2004/05–2005/06
Abstract: The description of a design of longline of the "spanish type" on European ... hake (Merluccius merluccius) fishery in the coastal and deep waters of the North Atlantic and its ... modifications used on fishery of Antarctic toothfish (D. mawsoni) and Patagonian toothfish (D. eleginoides) in ... waters of the Antarctic Region is given. The operational experience by the longline of the «spanish type ...
Meeting Document : WG-FSA-06/5 : Author(s): N.V. Kokorin and I.G. Istomin (Russia)
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Update on the ‘Demersal interactions with marine benthos in the Australian EEZ of the Southern Ocean: an assessment of the vulnerability of benthic habitats to impact by demersal gears’ project
interactions with marine benthos in the Australian EEZ of the Southern Ocean: an assessment of the ... vulnerability of benthic habitats to impact by demersal gears”. This project commenced in 2006 and is due to ... conclude with the publication of a final report in late 2011. Outputs of this project, including novel ... technologies and unique datasets for quantifying the dynamics and extent of the interactions between demersal ...
Meeting Document : WG-EMM-10/23 : Author(s): G.P. Ewing, D.C. Welsford and A.J. Constable (Australia)