Search results
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Dynamics of Notothenia rossii rossii size-age structure on the Kerguelen Islands shelf
to characterise the age composition. It was determined that in the initial years of exploitation of the stock ... years (1981-1985) fisheries were based practically on recruitment. After the closure of the specialised ... the mean length was 59.2 cm, mean age was 7.4 years; some 70% of catch consisted of repeated spawning fish ... in the initial years of exploitation and further closure of marbled rockcod specialised fishery can lead ...
Meeting Document : WG-FSA-94/04 : Author(s): P.B. Tankevich (Ukraine)
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Review of biological parameters for Ross Sea skates
is: TLt = 101.3(1? e?0.308[t+1.30]). The best estimate of longevity in A. georgiana is 14 years. However ... this may be a considerable underestimate, and true longevity may exceed 20 years. Age at sexual maturity ... for A. georgiana is estimated to be about 6–7 years for males and 8–13 years for females. The most plausible range ... (1 ? e?0.308[t+1.30]). The best estimate of longevity in A. georgiana is 14 years. However this may ...
Meeting Document : WG-FSA-06/31 : Author(s): M.P. Francis (New Zealand)
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An evaluation of reduced target strength estimates reported for krill (Euphausia superba)
) density dependent effects; and 3) compounding of diel effects. The possible bias in the calculations of ... target strength due to these weaknesses indicate an estimated 3-5 dB error due to unaccounted for ... directivity effects as a result of items under category 1; an estimated 2-3 dB bias due to systematic errors ... under category 2; and an estimated 3-4 db error due to category 3. Thus there is reason to believe that ...
Meeting Document : WG-KRILL-90/13 : Author(s): M.C. Macaulay (USA)
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Pursuit of polynyas in the Antarctic peninsula area
observations. A typical polynya existed off the tip of the Peninsula in 1987 and 1991. In the such years, sea ... ice cover developed extensively. Inversely, the years of the narrow sea ice cover were 1988, 1989,1990 ... and 1993. In the such years, polynyas did not existed. The typical polynya (nearly 500 x 200 km) in 1987 ... . A typical polynya existed off the tip of the Peninsula in 1987 and 1991. In the such years, sea ice cover ...
Meeting Document : WG-EMM-97/69 : Author(s): Kimura, N., Shibazaki, K., Matsumura, S., Naganobu, M., Okada, Y.
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Preliminary studies on age and growth of Dissostichus eleginoides in the Ob-Lena Bank
were estimated. The estimated ages ranged from 5 to 46 years for males and from 5 to 50 years ... for females. Five to eighteen years gave large contribution to the total age groups for both sexes. Females ... . The estimated ages ranged from 5 to 46 years for males and from 5 to 50 years for females. Five to eighteen ... years gave large contribution to the total age groups for both sexes. Females grew at a faster rate ...
Meeting Document : WG-FSA-10/48 : Author(s): K. Taki, M. Kiyota and T. Ichii (Japan)
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Demographic studies of Antarctic krill Euphausia superba Dana in the Cooperation and Cosmonaut Seas (Indian sector of the Southern Ocean)
and mortality rates. The duration of the life cycle of E.superba exceeded 5 years in the Cosmonaut Sea ... and 6 years in the Cooperation Sea. Assuming growth for only 180 days per year, growth rates ranged from 0.120 ... -0.133 mm.d-1, during the first year of life, to 0.019-0.022 mm.d-1 during the fifth year. Von ... method ranged from 0.52, during the maturation period, to 1.1-2.41, during the first and last years ...
Meeting Document : WG-Krill-94/16 : Author(s): E.A. Pakhomov (Ukraine)
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East Antarctica Planning Domain MPA Planning Reference Document #2: Draft MPA Report Part 2 - Descriptions of the proposed EARSMPA, the four highlighted MPAs and Activities in the Planning Domain
: Part 1- The planning domain and seven candidate MPAs (WG-EMM-14/48, Sections 1, 2, and 3), Part 2 ... -14/48, Sections 1, 4, 5, 6, 7, and 8), and Part 3- Research and Monitoring (WG-EMM-14/48, Sections 1 ... and 9). Parts 1 and 3 are presented in SC-CAMLR-XXXIII/BG/38 and SC-CAMLR-XXXIII/BG/40 respectively ...
Meeting Document : SC-CAMLR-XXXIII/BG/39 : Author(s): Delegations of Australia and France
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Deployment of research hauls in the exploratory fisheries for Dissostichus spp. in Subareas 48.6 and 58.4 in 2011/12
No. 701 (Korea), Koryo Maru No. 11 (South Africa), Saint André (France) and Shinsei Maru No.3 (Japan ... SSRU 5841G did not meet the required ratio of 1 research haul to 3 commercial hauls. All research hauls ... met the deployment criteria, i.e. fishing depths of 550 to 2200m, separation distance of at least 3 ...
Meeting Document : WG-SAM-12/06 : Author(s): Secretariat
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Estimating seabird by-catch in CCAMLR longline fisheries
Abstract: After many years of close to zero incidental seabird mortality in the longline fishery ... throughout the CCAMLR Convention Area, recent years have seen an increase in Subarea 48.3 and in Division ... After many years of close to zero incidental seabird mortality in the longline fishery throughout ... the CCAMLR Convention Area, recent years have seen an increase in Subarea 48.3 and in Division 58.5.2 ...
Meeting Document : WG-FSA-17/50 : Author(s): C. Darby and K. Olsson
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Defining fishing grounds in the Scotia Sea
a predictable location where the fishery obtains relatively reliable catches from one year to the next over ... a number of years. The quantity of interest is not only the total catch obtained from a location, say a 10 ... x 10 nmile area, over the years but how important that location is to the fishery each year, which ... is judged by that location providing a reasonable catch in a given year and that the catch remains ...
Meeting Document : WG-EMM-02/40 Rev. 1 : Author(s): I.R. Ball and A.J. Constable (Australia), S. Kawaguchi (Japan) and D. Ramm (CCAMLR Secretariat)