Resultados de la búsqueda
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On commercial significance of krill aggregations
operation areas and compare it with critical density values for marine animals feeding on krill. The results ... and 2002 (2380 hauls). In the course of the recent twenty years, krill has been fished in the areas ... with biomass density of at least 100 g/m2. This threshold value of krill commercial biomass ...
Meeting Document : WG-EMM-03/31 : Autor(es): S.M. Kasatkina (Russia)
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Beach litter accumulation at sub-Antarctic Marion Island – 1998/99
dominated for the previous two years. Items originating from South America (Argentina in particular) were ... the most prevalent, followed by items with oriental script. Monthly accumulation studies showed a ... strong seasonal effect with most items arriving during the winter. Litter retention studies showed that ... accunmulation for the year May 1998- April 1999. The amount of debris found in both annual and monthly ...
Meeting Document : CCAMLR-XVIII/BG/22 : Autor(es): Delegation of South Africa
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Estimation of krill (Euphausia superba) mortality and production rate in the Antarctic peninsula region
Peninsula from 26 December 1989 to 14 January 1990. Results were compared with data of an identical survey ... with RV ‘Polarstern’ in 1987/88. Seasonal variation between summer and winter abundance/biomass data ... 0.88 to 0.94 for different years. The exchange rate of water masses and krill biomass within one summer ...
Meeting Document : WG-KRILL-91/15 : Autor(es): Delegation of Germany
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White-chinned petrel incidental mortality event in the Subarea 48.3 Patagonian toothfish fishery during the season extension period in the 2013/14 season
for over 10 years. The circumstances associated with the event were investigated and a review of ... vessels very rarely catch seabirds. In accordance with CM 41-02, there will not be a season extension in ...
Meeting Document : WG-FSA-14/28 : Autor(es): M.A Collins, M. Soffker, C. Darby, K. Ross and P.N. Trathan (United Kingdom)
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Seabird by-catch in the Patagonian toothfish longline fishery at the Prince Edward Islands: 1997–1998
predominated (96%), followed by giant petrels Macronectes spp. (3%), with Yellow-nosed Mollymawks Thalassarche ... ), with Author(s): P.G. Ryan and M.G. Purves (South Africa) Title: Seabird by-catch in the Patagonian ... bycatch during the year July 1997-June 1998. Data on seabird bycatches were obtained from fishery ...
Meeting Document : WG-FSA-98/42 : Autor(es): P.G. Ryan and M.G. Purves (South Africa)
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Statistical problems in krill stock hydroacoustic assessments
issue of patchy years vs more even distribution would seem to have more impact on ecosystem management ... biomass present in an area, but rather how it is distributed. The issue of patchy years vs more even ... the target strength employed is later refined or revised, these acoustic estimates may be corrected ... be in conflict with optimum distribution of effort for statistical sampling methods. Zooplankton ... and nekton populations are seldom, if ever, random in their distribution with respect to the sampling ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 301–309 : Autor(es): Macaulay, M.C.
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Dissostichus eleginoides en Isla Heard (División 58.5.2)
in the age range 3 to 8 years used from other surveys (see WG-FSA-96/38). The 2000 survey was also ... -FSA-04/76, the assessment was run with the updated recruitment series and with just ages 3–7 (i.e ... Density (n km–2) Survey year Area (km2) Age 3 Age 4 Age 5 Age 6 Age 7 Age 8 1990 ... the spawning stock biomass in the final year of the 35-year projection. 3. Choose the lower of the ...
Document : Site Section: Publications
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Variability and predictability of Antarctic krill swarm structure
) echosounder, concurrent with net sampling. The acoustic data were analysed through applying a swarm ... 1 swarms were generally small (< 50 m long) and were not very tightly packed (< 10 ind m-3 ... and large and superswarms within the type 2 group. A minor group (swarm type 3) was also found ... over the survey grid was examined with respect to a number of potential explanatory variables ...
Meeting Document : WG-EMM-10/P10 : Autor(es): G.A.Tarling, T. Klevjer, S. Fielding, J. Watkins, A. Atkinson, E. Murphy, R. Korb, M. Whitehouse and R. Leaper
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Informe de pesquerías 2015: Pesquería exploratoria de Dissostichus spp. en la División 58.4.2
tagged fish) to achieve a stock assessment within a time period of 3 to 5 years. These catch limits are ... estimates from areas with assessed fisheries and are not more than 3–4% of the estimated stock size. 9 ... -03 Bird mitigation In accordance with CM 25-02. Limit of three (3) birds per vessel during daytime ... with a new fishery for grenadier (Macrourus spp.). In 2003, the fishery for Dissostichus spp. in ...
Document : Site Section: Publications
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Growth and Natural Mortality of Yellowfin Notothenia Patagonotothen guntheri shagensis from Shag Rocks Shelf
six various methods ranged from 0.63 to 1.06. With mean value of M, age and length at optimum ... exploitation were 2.5 years and 12.5 cm, respectively. Author(s): V.I. Shlibanov (USSR) Title: Growth and ...
Meeting Document : WG-FSA-89/18 : Autor(es): V.I. Shlibanov (USSR)