Resultados de la búsqueda
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On dispersion of different pelagic organisms, forming Antarctic backscattering in South Sandwich subarea during January–February 2000
Abstract: In the paper these have been discussed the results of acoustic estimation of ... myctophid fish species. There have been obtained differences between spatial distribution of different ... groups of pelagic organisms. One can reveal, basing on the results of surveying, the influence of water ... mass type on distribution of different pelagic organisms groups that form antarctic backscattering ...
Meeting Document : WG-EMM-01/61 : Autor(es): S.M. Kasatkina and A.P. Malyshko (Russia)
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Krill distribution variability and fishery conditions within the local ground of Subarea 48.3 in June 1991
Abstract: Experiments on estimation of krill transport by a current and its distribution ... characteristics variability were carried out within a local ground of Subarea 48.3 in the fleet operation area. It ... is shown that krill transport by wat4er flow across the fishing ground results in variation of fished ... krill aggregations distribution, and thus, in unstable indices of fishing vessels activity. During the ...
Meeting Document : WG-EMM-95/04 : Autor(es): Kasatkina, S.M.
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Acoustic data analysis and models of krill spatial distribution
used in three descriptors of krill spatial aggregation: power spectra for krill biomass fluctuations in ... space, semivariogram (spatial autocorrelation of krill biomass) and the frequency distribution of krill ... biomass estimate. The wavenumber spectrum resembles a white noise at scales of 2-20 km, although at scales ... smaller than 1 km the spectrum appears to lose its power significantly. The semivariance of biomass does ...
Meeting Document : SC-CAMLR-VII/BG/25 : Autor(es): United States of America
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Population assessment of Patagonian toothfish in Subarea 48.4
Abstract: This paper presents an update of the assessment of toothfish (Dissostichus spp.) in ... Subarea 48.4. The Subarea is divided into two management regions and assessed using a CASAL assessment of ... has been retained although a small number of changes have been made to try to improve the fit of the ... model and to reduce the dependency on a relatively small amount of data. These changes comprise the ...
Meeting Document : WG-FSA-12/36 : Autor(es): R. Scott (United Kingdom)
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Proposals on standardization of toothfish resource research
Abstract: The methodology of modern trawl surveys carried out the ICES responsibility area is ... discussed in the context of discussion at the Scientific Committee and the CCAMLR Commission in 2018 ... regarding the longline survey methodology in Division 58.4.1. It is shown that the methodology of modern ... bottom trawl surveys requires a standardized design of the spatial location of trawl samples and standard ...
Meeting Document : WG-SAM-2019/34 : Autor(es): S. Kasatkina
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Managing ecosystem uncertainty: critical habitat and dietary overlap of top-predators in the Ross Sea
Abstract: We summarize three types of data in order to increase appreciation among fishery ... managers of the close spatial and temporal ecological overlaps among top predators in the Ross Sea Shelf ... ): killer whale (type C), Weddell seal, Emperor penguin, Adélie penguin, and 4 species of flighted birds ... coast of Victoria Land from 1990 through 2004, we summarize the foraging ranges from these sites and the ...
Meeting Document : WG-EMM-06/29 : Autor(es): Testa, J.W., Stewart, B.S., Olmastroni, S., Lyver, P., Karl, B., Eastman, J., Barton, K., Ballard, G., Toniolo, V., Wilson, P., Ainley, D.
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Information on the status of fjord Notothenia rossii, Gobionotothen gibberifrons and Notothenia coriiceps in the lower South Shetland Islands derived from a long-term monitoring program (1983–2006) at Potter Cover
Abstract: The long term monitoring program of demersal fish at inshore sites of the South ... Shetland Islands has continued at Potter Cove from 2000 to 2006, covering a continuous sampling period of ... decline in trammel net catches of fjord fishes of the species Notothenia rossii and Gobionotothen ... the period 1983-1999, is still evident. At Potter Cove, despite an overall increasing trend of N ...
Meeting Document : WG-FSA-06/25 : Autor(es): E.R. Barrera-Oro and E.R. Marschoff (Argentina)
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Size at maturity and histological procedures explored to determine spawning activity of female Dissostichus mawsoni from samples collected from the Ross Sea in January 2004, December 2004 and January 2005
the 2003/04 and 2004/05 commercial fishing seasons in the Ross Sea to improve estimates of size of ... samples of toothfish less than 80 cm and over 120 cm total length were obtained. The first part of the ... study used classic histological techniques to classify ovary stages by the most advanced state of oocyte ... development visible in histological sections of the 2003/04 samples. Using this methodology, it is ...
Meeting Document : WG-FSA-05/63 : Autor(es): M.E. Livingston and P. Grimes (New Zealand)
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Proposal for the removal of night setting requirement for autoline vessels fishing in Division 58.5.2
fishing in Division 58.5.2 to occur at any time of the day/night cycle. The proposal forms part of an ... adaptive approach to management, which considers the risk status of the fishery, knowledge on the ... effectiveness of mitigation measures, mitigation performance record of the vessel, seabird mortality levels and ... assessment of the likely effects of individual mitigation measures to total mitigation response. Since the ...
Meeting Document : WG-FSA-04/73 : Autor(es): G. Robertson and B. Baker (Australia)
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Foraging areas of black-browed and grey-headed albatrosses breeding on Macquarie Island in relation to marine protected areas
-order predators, there is a paucity of data that can be used to evaluate their efficacy in achieving ... this purpose. 2. We assessed the effectiveness of a network of MPAs around Macquarie Island in the ... Southern Ocean by examining the foraging areas of black-browed and grey-headed albatrosses that were ... breeding on the Island. 3. During late incubation and brood periods over 90% of time spent foraging by ...
Meeting Document : WG-FSA-04/49 : Autor(es): A. Terauds, R. Gales, G.B. Baker and R. Alderman (Australia)