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Sensitivity analysis for parameters of predatory species CCAMLR Ecosystem Monitoring Program
(% Current Value) (20 %) 5 5 (30%) 2 3 Sample sizes required for five years of monitoring and a = 0.10 ... ) Figure 3: Frequency distribution of Adelie penguin first post-hatch foraging trip lengths. Sexes and ... vertebrate population parameters of interest with acceptable reliability. To comment on the suitability of ... simulated, and variances estimated if no real data exist, the use of actual data with 'real' variance ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 411–432 : Автор(ы): Whitehead, M.D.
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Further computations of the consequences of setting the annual krill catch limit to a fixed fraction of the estimate of krill biomass from a survey
), as a function of the fraction of the biomass estimate which is set as the catch for a 20-year period ... , ) for tl <_l! e, = e:: + W, / 2 (3) where ty from U [38,42] mm with W, = 10 mm, and ... of age (a+t) years which are mature (and can be evaluated from equations (3) and (4) of the main ... (viii) and equation (A.1.2), together with equation (A.2) or (A.3) as appropriate. Losses to predation ... years, and t measures time after the 'start! of the year. As the three-month growth period ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 81–106 : Автор(ы): Butterworth, D.S., G.R. Gluckman, R.B. Thomson, S. Chalis, K. Hiramatsu and D.J. Agnew
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Long-term monitoring of krill recruitment and abundance indices in the Elephant Island area (Antarctic Peninsula)
for the Elephant Island area with regard to the representativeness of the study area (60°-62 o 30´S ... one- and two-year-old krill (R 1 and R 2 respectively). Statistically significant fluctuations in ... the early years 1977, 1980, 1981 and 1982 represent anomalously high densities, and that the ... variable during the later part (late 1980s - early 1990s). These significant fluctuations will certainly ... one survey. The Siegel et al. Table 3: Results for RI and R2 for different krill year classes ... versus year. The result showed a significant negative trend of the density over years (T = -0.615 , p ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 19–35 : Автор(ы): Siegel, V., W. de la Mare and V. Loeb
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Sexing of adult Adélie penguins by discriminant analysis of morphometric measurements
shift). It was found that the combination of flipper breadth, bill depth and length of the middle toe ... incubation shift). It was found that the combination of flipper breadth, bill depth and length of the middle ... "Standard of Birds' Measurements" proposed by Baldwin et al. (1931) with some modifications suggested by ... cubito-carpal joint (FB), length of the middle toe including nail (LM), arc between 544 eyes from ... of the middle toe). These three variables are un correlated and all have higher values for males ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 543–549 : Автор(ы): Scolaro, J.A., Z.B. Stanganelli, H. Gallelli and D.F. Vergani
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Archival and satellite-linked data recorders
factory in three day increments from 3 to 93 days,Time-out period may be changed at later date. * Light ... million readings and store up to 256 KBytes for) 1 year. » Units optionally provided with 2 depth ... animal of interest and subsequently recovered together with the stored data, and Satellite-linked ... investigated 24 hours a day for periods of days to months with little or no intervention on the part of the ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 475-493 : Автор(ы): Hill, R.D.
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Management and assessment options for the crab fishery around South Georgia
context of this crab fishery with specific reference to the principles of the CCAMLR Convention. We ... compatible with the expansion of the information base available for assessment. File: 14basson-hoggarth.pdf ... together with the requirements of Article I1 of the CCAMLR Convention. The objectives in sub-paragraph 3 ... then consider these options in the context of this crab fishery with specific reference to the ... develop at a rate compatible with the expansion of the information base available for assessment ... RBnReTCR HoBbIM AJlR AHTKOMa B nnaHe KaK 3 ~ c n n y a ~ ~ p y e ~ o r o BHAa, TaK H ~ c n o n b s y e ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 193–202 : Автор(ы): Basson, M. and D.D. Hoggarth
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Distribution and relative abundance of Antarctic toothfish (Dissostichus mawsoni) on the Ross Sea shelf
, with some evidence for an ontogenetic migration from east to west as they grow. From the fisheries data ... three years from 2006 to 2008, with catches peaking in 2008, and a total catch of 927 tonnes (Table 3 ... 0 1 0 * * * 1 Total 41 296 752 594 1 353 1 764 2 171 3 190 2 967 3 074 2 250 18 453 * SSRUs with ... catches in SSRUs 881J–881M, summed by small squares across all years, is shown in Figure 3. The fishing ... for all years up to, and includ- ing, the 2007/08 fishing year. The observer data used in this report ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 33–51 : Автор(ы): Hanchet, S.M., S. Mormede and A. Dunn
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Trends in relative abundance of fjord Notothenia rossii, Gobionotothen gibberifrons and Notothenia coriiceps at Potter Cove, South Shetland Islands, after commercial fishing in the area
relative abundance of this species and G. gibberifrons are well below those found in the early 1980s. These ... inshore sub-populations of N. rossii and G. gibberifrons over the last 16 years was most probably caused ... with historical information on offshore commercial fishing and with the results of scientific surveys ... below those found in the early 1980s. During the 16 years of observations the values observed were ... years, in parallel with the decrease of N. rossii and G. gibberifrons populations (Barrera-Oro and ... of catch date (Epanenchikov kernel, bandwidth = 0.15), together with the observed split-year mean ... with the observed split-year mean values. Annual marks correspond to 1 January each year ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 43–52 : Автор(ы): Barrera-Oro, E.R., E.R. Marschoff and R.J. Casaux
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Status of the krill stock around Elephant Island in 1991/92 and 1992/93
other years appears to be associated with female maturity development and spawning during the early ... austral summers of 1991/92 and 1992/93 are described and compared with information from previous years ... . The length frequency distributions and maturity stage composition reflected relatively good year class ... success from the 1990/91 spawning season but poor success from 1991/92. Year class success from these and ... success. Years of good year class success, such as 1987/88 and 1990/91 (Table 2), were associated with ... described and compared with information from previous years. The general distribution of krill length and ... with female maturity development and spawning during the early summer months. The overall abundance ... 3) and was associated with extremely low krill abundance. It was dominated by small krill with a ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 7–33 : Автор(ы): Loeb, V. and V. Siegel
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Biological parameters for icefish (Chionobathyscus dewitti) in the Ross Sea, Antarctica
mature at about 340–360 mm total length (TL) and about 3–4 years of age, and that 95% were mature at ... consistent with previous research. Regression equations for converting standard length to total length and ... about 370–400 mm TL and 6–8 years of age. Counts of growth zones in sectioned otoliths were used to ... approached a significantly larger mean asymptotic maximum size than males. Maximum ages of 8 and 11 years ... total length (TL) and about 3–4 years of age, and that 95% were mature at about 370–400 mm TL and 6–8 ... ) = 1.0220 x 10–6). The data are plotted in Figure 3, with the fitted curves from the full model overlayed ... compared with model 1 range between <1% to 3%; differ- ences in BIC range between <1% to about 1%). The ... 340–360 mm TL and 3–4 years of age, while 95% are mature at 370–400 mm TL and 6–8 years of age ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 139–165 : Автор(ы): Sutton, C.P., M.J. Manning, D.W. Stevens and P.M. Marriott
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