Resultados de la búsqueda
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Estimation of krill biomass from an acoustic survey carried out in 1986, during a study of predator–prey interactions around the western end of South Georgia
Abstract: An acoustic survey, designed to study the distribution of shore-breeding, marine ... predators and their pelagic prey, was carried out in 1986 around the western end of South Georgia. This ... paper describes how this acoustic data has been used to estimate krill biomass of part of the original ... survey area as part of an interannual study. The radiating transect design gave increased sampling ...
Meeting Document : WG-EMM-99/17 : Autor(es): C. Goss and S. Grant (United Kingdom)
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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 : Autor(es): 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 : Autor(es): 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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Abundance of larvae and assessment of recruitment size of Carlsberg lantern fish (Electrona carlsbergi Tåning, 1932) - (family myctophidae) in Southwest Atlantic in 1989
arid vertical hauls at 500- 0m. The method of delta-distribution of random values (Aitchison, Brown ... recruitment biomass (fish aged up to 1 year) in this species for the area of 87750 square miles studied. The ... abundance of larvae in this area was 4.3 x 10 ind., while the biomass of one year old fish obtained was ... 10750 tons. A whole chain of similar reproductive grounds is assumed to exist in the notal zone of the ...
Meeting Document : WG-FSA-95/07 : Autor(es): Nevisnky, M.M.
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Results of Phase I and II of the research program for toothfish fishery in Subarea 88.3 during the 2010/11–2011/12 seasons (this is a revision of WG-SAM-12/05)
2336 m. Total number of set hooks amounted 171096. In 2011 research fishing covered SSRU B, C and D ... research fishing data contributes to the achievement of the main objectives of research for the data-poor ... area: estimate of number index, evaluation of fishing capacity of Subarea 88.3, preparation of ... hypotheses about the ratio of fish in the area and the total stock as well as studying of biological ...
Meeting Document : WG-FSA-12/13 : Autor(es): A.F. Petrov, V.A. Tatarnikov, K.V. Shust and I.I. Gordeev (Russia)
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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 : Autor(es): G. Robertson (Australia) and C. Moreno (Chile)
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The brief review of the AtlantNIRO’s investigations of living marine resources: whales, krill and fish, in the Atlantic sector of the Antarctic
the new resources. Since 1960 AtlantNIRO’s contributions in the study of all three resources: whales ... Abstract: The USSR has fished in the Atlantic Sector of the Antarctic for three living marine ... were collected a big set of statistical and biological data on embryos growth rate of sperm whales ... , pigmy blue whales, southern baleen whales, physiological structure of the females share in the ...
Meeting Document : WG-EMM-04/30 : Autor(es): F. Litvinov, D. Tormosov, Zh. Frolkina (Russia)
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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 : Autor(es): 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 : Autor(es): E. Barrera-Oro, E. Marschoff and D. Ainley
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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 : Autor(es): K. Teschke, H. Pehlke and T. Brey on behalf of the German Weddell Sea MPA (WSMPA) project team