Resultados de la búsqueda
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Preliminary assessment of mackerel icefish (Champsocephalus gunnari) in the vicinity of Heard Island and McDonald Islands (Division 58.5.2), based on a survey in March–April 2010, including a revised growth model
58.5.2 in the vicinity of Heard Island in March-April 2010 to provide the information for an assessment ... assessment of yield for the area of Division 58.5.2 to the west of 79°20’ E using standard CCAMLR methods ... focus on this cohort. A new growth model is also estimated which shows an improved fit to observed sizes ... . The strong year class detected in the last three years’ surveys is now fully recruited as the 4 ...
Meeting Document : WG-FSA-10/12 : Autor(es): D.C. Welsford (Australia)
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Temporal changes in sighting density indices of baleen whales in CCAMLR Subareas 48.1 and 48.2 based on three circumpolar sighting surveys
in EMM-15 that an analysis of historical cetacean surveys in IWC Area II could provide a context for ... abundance of whales in relevant subareas for krill management, and the second is on the concentration of ... of Antarctic sighting cruises for whale assessment purposes organized by the International Whaling ... . CPI, CPII and CPIII data in Subarea 48.1 corresponded to years 1982/83, 1989/90 and 1993/94+1999/00 ...
Meeting Document : WG-EMM-16/26 : Autor(es): L.A. Pastene and T. Hakamada
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Observation on interactions between marine mammals and krill mid-water trawl
Abstract: An observation on the interaction between marine mammal and krill midwater trawl was ... carried out onboard the Chinese krill fishing vessel Fu Rong Hai during the 2018/19 fishing season. The ... underwater and on sea surface observations were both deployed. Although large numbers of Antarctic fur seal ... seals. Future researches on the interaction between marine mammals and krill fishing gears would be ...
Meeting Document : SC-CAMLR-38/BG/20 : Autor(es): Y. Ying, G. Fan, X. Zhao, J. Zhang, X. Wang and J. Zhu
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Interannual variations of water thermochaline structure on South Georgia Island, South Orkney Islands and Shetland Islands shelves
could be used when analysing krill aggregations' distribution and density for the period of years ... temperature, while in other years (1980, 1981) the layer temperature was negative. The second year type (1979 ... between the same. Two year types were revealed in the area of South Orkney Isls. Availability of a warmed ... Abstract: Basing on the analysis of major water mass boundaries and their thermochaline ...
Meeting Document : WG-EMM-00/34 : Autor(es): P. Chernyshkov, V. Shnar, O. Berezhinsky and I. Polischuk (Russia)
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Use of a population model to assess the impact of longline fishing on wandering albatross populations
Abstract: An age-structured model of a wandering albatross Diomedea exulans population is ... investigate the potential impacts of new longline fisheries such as that for Patagonian toothfish Dissostichus ... time lag of 5-10 years before further decreases in population numbers are reflected in the breeding ... population. Also, because wandering albatrosses are long-lived, population growth rates take approximately 30 ...
Meeting Document : WG-IMALF-94/08 : Autor(es): Coleen L. Moloney, John Cooper, Peter G. Ryan and W. Roy Siegfried (South Africa)
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On the consequences of differentiating between adult and sub-adult survival rates in the krill-predators model
adults and sub-adults, with different survival rates for these two groups. Broadly speaking, the sub ... is unable to achieve compatibility with survival rate data for the Antarctic fur seal coupled to an ... split of the overall density dependence effect between the first year and following sub-adult years of ... . This solution brings with it new problems, however, in that two further parameters need to be specified ...
Meeting Document : WG-EMM-95/39 : Autor(es): Butterworth, D.S., Thomson, R.B.
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On the problem of Soviet krill fishery allocation and intensity in the area of Elephant Island in the season of 1988-1989
. Though the catch of the USSR in the above-mentioned season reached maximum, the total fishery intensity ... for the last 9 seasons was low and only 1 standard vessel operated in the area during 40% of the ... the scheme: 1) vessels enter the Elephant Island area and search for krill concentrations; 2) fishing ... periods showed that fleet operation areas in general overlap the minor part of foraging zones for animals ...
Meeting Document : WG-CEMP-92/30 : Autor(es): V.A. Sushin and A.S. Myskov (Russian Federation)
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Reports of CCAMLR inspectors submitted in accordance with the CCAMLR System of Inspection for 1999/2000
for 1999/2000 Approval: Approved ... Reports of CCAMLR inspectors submitted in accordance with the CCAMLR System of Inspection for 1999 ...
Meeting Document : SCOI-00/03 Addendum
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Population and survival trends of wandering albatrosses (Diomedea exulans) breeding on Macquarie Island
last 40 years has increasingly focused on their conservation status. Demographic trends of the ... than 20 breeding pairs. Most breeding birds in this small population are banded and monitoring over the ... with information from an intensive demographic study conducted between 1994 and 2003. Annual breeding ... fishing effort in the eastern Indian Ocean. Breeding numbers slowly increased on Macquarie Island through ...
Meeting Document : WG-FSA-04/50 : Autor(es): A. Terauds, R. Gales, R. Alderman and G.B. Baker (Australia)
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Preliminary report of sound-speed contrast and density of krill measured on board RV Kaiyo Maru
characteristics of the TS. For the calculation by the acoustical scattering model, the information of size ... , morphology, orientation, and material properties of krill are required. There are two important material ... ) and the other is the ratio of the sound speed in animal to that in the surrounding water (sound-speed ... contrast.). Although these parameters are inevitable for the model calculation, the reports of them are ...
Meeting Document : WG-EMM-05/36 : Autor(es): Y. Takao, H. Yasuma, R. Matsukura and M. Naganobu (Japan)