Search results
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Indices of prey availability near the Seal Island CEMP site: 1990 to 1996
C O r I I a C y W T C I I C . Q ~ M O T ~ ~ @ M Y ~ C K A M L ? A H A e K C a M B YI.ICIIeHH0CTI.I KpI.In5I, I I 0 n y Y e H H b I M I . I C n O M O U b W C e T e B b I X npo6 ... and averaged over each 100 m of distance along the trackline. For the purposes of this paper, mean volume ... - 31 Jan 17-28 Jan 16 - 29 Jar1 23 Jan - 4 Feb (ii) Mean distance of prey from Seal Island ... . (iii) Mean depth of prey, where D,,,,A is the mid-depth of the ith depth bin. (iv) Persistence ... / Description: Four indices of prey availability are calculated from surveys conducted in the vicinity of the ... Paper Title: Indices of prey availability near the Seal Island CEMP site: 1990 to 1996 Abstract ... Seal Island CEMP site during the austral summers of 1990 to 1996. The indices are measures of average ... surveys each year were subsampled to include the foraging range of predators breeding at Seal Island ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 37–45 : Author(s): Hewitt, R.P., G. Watters and D.A. Demer
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METHODOLOGY OF EVALUATING THE AQUATIC LIFE RESOURCES
in the proposed technique offer the mean integral values of probabilities. It is recommended to minimize errors ... in the proposed technique offer the mean integral values of probabilities. It is recommended to minimize errors ...
Meeting Document : WG-SAM-08/P02 : Author(s): L.A. Kovalchuk (Ukraine)
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Vertical migrations of mackerel icefish (Champsocephalus gunnari) on the South Georgia shelf
prospecciones de arrastre de C. gunnari durante el dfa solamente. 1. IN1RODUCTION Scientists of several ... in shelf waters of the South Georgia by means of trawl surveys. The assessment methodology suggested ... -21:00 Mean catch 2122 2054 '-------_1686 2997 L__ ·- 200_ ·- 300 ... commercial concentrations of C. gunnari in years of high abundance of the species (1982/83, 1983/84 and 1986 ... considered in the paper. A distinct pattern of daily vertical migrations of C. gunnari was observed on the ... Paper Title: Vertical migrations of mackerel icefish (Champsocephalus gunnari) on the South ... Georgia shelf Abstract / Description: High values of coefficient of variation resulting from the ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 3–14 : Author(s): Frolkina, J.A. and V.I. Shlibanov
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Report of the WG-FSA Intersessional Subgroup on Sampling Catches from Longlines
on the mean time that is taken for hauling which is itself a random variable. The gear-based approach uses ... of fish sampled for length would not substantially increase the precision of the estimates for mean length ... on the mean time that is taken for hauling which is itself a random variable. The gear-based approach uses ... of fish sampled for length would not substantially increase the precision of the estimates for mean length ...
Meeting Document : WG-FSA-02/52
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Some comments on the procedure for testing estimators of krill abundance which utilise survey data
a este respecto. 1. IN1RODUCTION A "straightforward" approach to abundance estimation from surveys ... from each transect is then treated as an independent estimate of the density in the area, and the mean ... still indicate statistically significant lack of fit in both cases, means that model misspecification ... parameter values are meaningful, given other data available from the survey. Attention is confined to model ... provide an encouraging improvement in fits to the distribution of inter-swarm distances observed on the ... Paper Title: Some comments on the procedure for testing estimators of krill abundance which ... computer generation of krill distribution patterns, which are compatible with existing information on the ... utilise survey data Abstract / Description: Since krill distributional data do show evidence of spatial ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 191–205 : Author(s): Butterworth, D.S., D.L. Borchers and D.G.M. Miller
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Performance and geometry of the FP-120 trawl used during UK fish stock assessment surveys around South Georgia, Subarea 48.3
are automatically activated in sea water, and transmit their information to the vessel by means ... to be outliers and were omitted from the calculation of mean values of trawl geometry for each tow. Spurious ... (d) was performed: where W is the mean vessel speed through the water (knots). h = 29.36 + 0.01d ... opening (and, thus, swept area) of a bottom trawl are discussed. In situ measurements of the FP-120 trawl ... compared to values obtained from a previous equation. The resulting difference in biomass estimates is of ... Paper Title: Performance and geometry of the FP-120 trawl used during UK fish stock assessment ... presented. Regression equations for the estimation of horizontal opening from other, more easily measured ...
Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 51–69 : Author(s): Pilling, G. and G. Parkes
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Note on relationship between the Antarctic krill and annual variation of ice edge during 1979 to 1992
of the sea ice in the sea area around the South Shetland Islands are described. Mean size of krill near ... in the sea area around the South Shetland Islands are described. Mean size of krill near the coastal zone ...
Meeting Document : WG-KRILL-93/26 : Author(s): M. Naganobu and S. Kawaguchi (Japan)
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A simple approach for calculating the potential yield of krill from biomass survey results
captura. Se considera que los efectos estacionales tienen menos importancia. 1. IN1RODUCTION One ... of each year (Ny,o) is given by: (A.2) where R is the mean recruitment, and N(O; 0'2) is a normal ... distribution with zero mean and variance 0'2. Mass-at-age is obtained from the growth curve form used ... Paper Title: A simple approach for calculating the potential yield of krill from biomass survey ... results Abstract / Description: Estimates are calculated for the parameter λ in the yield equation Y = λ ... MB 0 for a krill fishery in which both the fishery and krill growth are seasonal. The criterion used ... for the calculations is that the probability that the krill spawning biomass drops below 20% of its ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 207–217 : Author(s): Butterworth, D.S., A.E. Punt and M. Basson
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Larval fish distribution and abundance of the western Ross Sea
, Nototheniidae and Paralepididae) were collected from surface to 380 m depth. Mean relative abundance of larval ... , Nototheniidae and Paralepididae) were collected from surface to 380 m depth. Mean relative abundance of larval ...
Meeting Document : WG-FSA-95/11 : Author(s): Greco, S., la Mesa, M., Vacchi, M.
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Management and uncertainty: the example of South Georgia
and revise conservation measures on the basis of the best scientific evidence available ••• ", while ... and proposed conservation measures." Though not very explicit on what is included the comparison ... the more conservative policy to exceed those from a policy of allowing non-directed fishing ... to consider ways in which CCAMLR can improve its ability to take decisions in the face of uncertainty ... uncertainty. The question is addressed specifically in terms of the fishery of Notothenia rossii around South ... Paper Title: Management and uncertainty: the example of South Georgia Abstract / Description ... : Decisions on fishery management are often made with some degree of uncertainty in scientific advice. Such ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 341-353 : Author(s): Gulland, J.A.