Résultats de la recherche

1. Abundance, size and maturity of krill (Euphausia superba) in the krill fishing ground of Subarea 48.1 during the 1990/91 austral summer

   % confidence limit), of which 1.22±0.42 million tonnes was concentrated in the fishing ground (frontal ... the survey area was estimated to be 1.59±0.45 million tonnes (95% confidence limit), of which 1.22±O ... was estimated to be 1.59±0.45 million tonnes (95% confidence limit), of which 1.22±0.42 million ... 73.6 1589 49129 453 14 34 E - Mean, V - Variance, CL - 95% confidence limit, CV - coefficient of ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 183–199 : Auteur(s): Ichii, T., H. Ishii and M. Naganobu

2. Quantifying movement behaviour of vessels in the Antarctic krill fishery

   of the krill fishery. Analysis of distance between hauls in relation to their catch level revealed a ... distinct pattern. Mean between-haul distances were generally longer when catch levels fell below 10 tonnes ... /haul, and the travel distance decreased as the catch level increased; this pattern was most obvious for ... distance between hauls in relation to their catch level revealed a distinct pattern. Mean between-haul ... distances were generally longer when catch levels fell below 10 tonnes/haul, and the travel distance ... decreased as the catch level increased; this pattern was most obvious for operations by Japanese fishing ... been managed by CCAMLR since the 1980s (Everson, 2000). Although precau- tionary catch limits for the ...

   Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 131–148 : Auteur(s): Kawaguchi, S. and S.G. Candy

3. Vertical migrations of mackerel icefish (Champsocephalus gunnari) on the South Georgia shelf

   /87). Catch-per-hour of fishing was analysed by the time of day. Catches made by both bottom trawls ... years of high abundance of the species (1982/83, 1983/84 and 1986/87). Catch-per-hour of fishing was ... in years of high abundance (1982/83, 1983/84 and 1986/87). Catch-per-hour of fishing was analysed by ... presents catch data obtained from research vessels fishing for commercial concentrations of C. gunnari on ... again start to increase. The pattern of catch distribution for bottom trawls at various times of the ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 3–14 : Auteur(s): Frolkina, J.A. and V.I. Shlibanov

4. Identifying taxonomic groups vulnerable to bottom longline fishing gear in the Ross Sea region

   -catch in the Ross Sea as part of its benthic fisheries impact assessment. The rationale for including or ... , taxonomic resolution and presence in fishery by-catch are also important. Thirteen coarse-resolution ... identified an interim list of taxa to monitor in fishery by-catch in the Ross Sea as part of its benthic ... fishery by-catch are also important. Thirteen coarse-resolution taxonomic groups are identified as ... requiring vessels to monitor by- catch in real time for evidence of an encounter with VME taxa, and to ... considered vulnerable based on ecol- ogy alone. Consequently, the criteria of presence in fishery by-catch ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 105–127 : Auteur(s): Parker, S.J. and D.A. Bowden

5. The foraging range of Adélie penguins – implications for CEMP and interactions with the krill fishery

   -scale krill catch data for the regions of interest. The potential for overlap with krill fishing occurs ... foraging trips were compared with historical records of fine-scale krill catch data for the regions of ... compares these foraging locations with fine-scale catch data on Antarctic krill, Euphat~sia szlpevba, for ... a background of historic krill catch data. Bathymetric data are also presented. The edge of the ... sea-ice may also limit foraging ranges during early chick rearing since birds can only walk over ice ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 75–87 : Auteur(s): Kerry, K.R., J.R. Clarke, S. Eberhard, H. Gardner, R.M. Lawless, S. Corsolini, S. Focardi, E. Franchi, D. Rodary and R. Thomson

6. Sensitivity investigation of the SDWBA Antarctic krill target strength model to fatness, material contrast and orientation

   . (1998) starved animals, was considered as the lower limit and the latter, i.e. the default value for ... the SDWBApackage20050603, to represent the upper limit for krill. In addition, the model was ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 97–122 : Auteur(s): Calise, L. and G. Skaret

7. An assessment of toothfish in Subarea 48.3 using CASAL

   catch level, which makes it a potential tool for determining the long-term catch limit, based on the ... stock, the available data include catch length-frequencies, standardised CPUE data, mark–recapture ... time for MCMC runs. Input data Official CCAMLR catch data were used to calculate catches in tonnes ... from 1985 to 20051 (Table 1). Catch proportions at length were calcu- lated from length-frequency ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 65–95 : Auteur(s): Hillary, R.M., G.P. Kirkwood and D.J. Agnew

8. Estimation of krill (Euphausia superba) mortality and production rate in the Antarctic Peninsula region

   reached only a factor of 1:1.6. Krill mortality was calculated by linearized catch curve analysis and ... calculated by linearized catch curve analysis and resulted a rate of Z = 0.88 (1989/90) and Z = 0.96 (1987 ... time. Working with these 'pseudo-cohort' data we can apply the linearized catch curve equation with ... constant time intervals (Sparre et al., 1989) In C(tl,t2) = g - Zt Figure 4 shows the linearized catch ... regression analysis based on age composition data from various years (linearized catch curve method ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 159–176 : Auteur(s): Siegel, V.

9. CPUE indices used in Soviet krill fishery statistics from 1977 to 1992 and their possible utility for evaluation of relative changes in krill biomass

   possible utility for evaluation of relative changes in krill biomass Abstract / Description:  Key catch-per ... and primary data for their calculations, were examined. The main CPUE indices were catch per vessel ... -days fished (CVDF), catch per extended vessel-days fished (CEVDF) and catch per hour of trawling (CHT ... per day was higher. The correlation between catch and tow time was considered to be an indicator of ... @atlant.baltnet.ru Abstract Key catch-per-unit-effort (CPUE) indices used in Soviet krill fi shery statistics, as ... CPUE indices were catch per vessel-days fi shed (CVDF), catch per extended vessel-days fi shed (CEVDF ... ) and catch per hour of trawling (CHT). A relatively high correlation between mean monthly values of ... catch and tow time was considered to be an indicator of homogeneity in krill distribution. The utility ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 165–177 : Auteur(s): Litvinov, F.F., A.Z. Sundakov and V.I. Arkhipov

10. Supplementary data on exploited stocks in Division 58.5.1 (Kerguelen)

    Notothenia rossii, a species which is at present only fishable as a by-catch. The total biomass of the stock ... reached legal catch size. The value of the selected abundance index (catch per unit effort expressed in ... reduction in catch and fishing effort. This trend could well be reversed by too high a catch in 1988/89 ... fishable as a by-catch. The total biomass of the stock, however, remains very low according to the ... good results in 1988/89, once the cohort had reached legal catch size. The value of the selected ... abundance index (catch per unit effort expressed in tonnes per fishing hour) is, however, lower than those ... in the abundance index, following a reduction in catch and fishing effort. This trend could well be ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 147–161 : Auteur(s): Duhamel, G.

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