Résultats de la recherche
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Age determination of Notothenia gibberifrons from the South Shetland Islands, Antarctic Peninsula subarea (Subarea 48.1)
scale readings gave a result of one year more. This could arise from the difficulty in differentiating ... ~ N 0'= 42 0 8 r ~n N~ = 53 ~ 6 4 z 2 ---- >- 14 16 18 20 22 24 26 28 30 32 34 36 38 u z t4 ... w :::> 12 ~ iO t N cf= 15 0 0::: 8 r B ~ I.L N~ = 22 6 4 2 14 16 18 20 22 24 26 28 30 ... compared in 19 Potter Cove specimens. In some cases scale readings gave a result of one year more. This ... reading of scales indicated one extra year. This finding is discussed below. Table 2 shows the observed ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 143-160 : Auteur(s): Barrera-Oro, E.
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Preliminary report on biological observations and exploratory fishing data collected in the South Georgia area during the 1985/86 cruise of MT Carina
. georgianus was represented by three length groups: 20–24, 32–41 and 42–56 cm. N. gibberifrons was also ... + Age groups (years) O~~==~,==~==~,===;~~,==~==~,==~~ Figure 8 20 30 40 ~ Total length (cm ... grcups (years) 200 O~~~I~~~I~~~I==~~I==~~ 20 3J 40 50 Total length (cm) Figure 7 Length and age ... . aceratus was 25-72 cm. P. georgianus was represented by three length groups : 20-24, 32-41 and 42-56 cm ... longueurs: 20-24, 32-41 et 42-56 cm. ~ I qibberifrons etait egalement represente par trois' categories de ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 65-97 : Auteur(s): Kreft, K. and J. Szynaka
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Biogeographic patterns of benthic invertebrate megafauna on shelf areas within the Southern Ocean Atlantic sector
approximately 20–30 cm (Gutt and Starmans, 2001; Gutt and Piepenburg, 2003; Teixidó et al., 2004 ... averaged 17.9 m and 9.1 m respectively. The target time for a gear deployment was 30 min on the bottom ... target time for a gear deployment was 30 min on the bottom. Time on the bottom was measured by means of ... - elled into baskets. Up to 20 baskets of benthos were transferred to the sorting area for weighing ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 167–192 : Auteur(s): Lockhart, S.J. and C.D. Jones
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Age, growth and size at sexual maturity of Macrourus carinatus caught as by-catch in Australian sub-Antarctic trawl fisheries
McDonald Islands (Division 58.5.2) in 1992 and 1993. The range of estimated ages was 4 to 25 years. There ... Ross Sea. 0 100 200 300 400 500 600 700 0 5 10 15 20 25 30 Age (years) To ta l l en gt h ... Dorsal Ventral van Wijk et al. 142 0 5 10 15 20 25 30 -500 -400 -300 -200 -100 0 100 200 300 ... corresponding to the upper end of each bin. 0 5 10 15 20 25 30 200 250 300 350 400 450 500 550 600 650 ... 30-day period. Age estimates were subsequently adjusted by taking into account the difference ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 139–151 : Auteur(s): van Wijk, E.M., R. Williams and A.J. Constable
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Analysis and modelling of the Soviet Southern Ocean krill fleet, II: Estimating the number of concentrations and analytical justification for search data
18.9 hrs 693.6 (4-8), 61.2 (8-9) 1 290.4 50" 40' 20" o' 20' 40' 10' 30' 30' 10" 50" 60" 60 ... 10 15 20 30 40 50 60 70 Concentration Radius (nml) Figure 16: Histogram of the radii of ... longitude is assumed to be 30 nm. Figures 6 to 9 show the results of the application of the rule ... (1989) concentrations are presumed to persist for the entire fishing period of14 to 30 days.) 290 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 283–322 : Auteur(s): Mangel, M.
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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 ... patch dominated year) it can quickly obtain sufficient food for its needs. If, however, it must spend a ... approximately 20 n miles from Seal Island (the estimated foraging range of a penguin, personal communication ... . Fish. Aquatic. Sciences, 39(1) 229-231 p. 305 Figure 1: 56°W 30' 55~ 30' 45'~----~r ... -----------~~~~~~~~--------'-----------'-'45' 15' 30' 15' 30' ASPLAND IS. / ~OOIfl""", EADIE IS ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 301–309 : Auteur(s): Macaulay, M.C.
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Spatially explicit population dynamics models for Antarctic toothfish in the Ross Sea region
(years) 0 5 10 15 20 25 30 0 ... 5 10 15 20 25 30 Age (years) 1.0 0.8 ... moved by Antarctic toothfish (median of about 20 km after a year at liberty, see Parker et al., 2013 ... to 30 November 1997 is labelled the 1997 year. 21 Spatially explicit population dynamics ...
Science Journal Paper : CCAMLR Science, Volume 21 (CCAMLR Science, Volume 21) : 19–37 : Auteur(s): Mormede, S., A. Dunn, S. Hanchet and S. Parker
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Estimation of krill (Euphausia superba) mortality and production rate in the Antarctic Peninsula region
ratio of 0.88 to 0.94 for different years. The exchange rate of water masses and krill biomass within ... three year life span of krill. Their age group 1 (20 to 43 mm) included the two age groups 1+ and 2 ... frequencies from whale stomachs and found high abundances of 20 to 30 mm juvenile krill. These size groups ... during the last years several year-classes had been poor or almost missing, e.g. year-class 1983/84 as ... year life span (Rosenberg et al., J986) or eight age groups and a maximum longevity of seven years ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 159–176 : Auteur(s): Siegel, V.
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Statistical power to detect changes in growth rates of Antarctic fur seal pups
changes (between years) in pup growth rates, the loss of power associated with obtaining weight samples on ... ------- ------- Females ------- mean mean Date n weight (kg) s.d. n weight (kg) s.d. 1988: 2 Jan 30 9.91 1.60 20 8.78 ... :=,8=0.1 0:=,8=0.1 + + 15 20 25 CHANGE IN 30 35 40 GROWTH 45 50 RATE Figure 2: If the ... cx={3=.l cx={3=.05 t t ALL CURVES: 4 weighing dates 28-day intervals 50 pups/day 15 20 25 30 ... for each year and as weighted averages of both years. Growth Rate Standard Error (kg/d) of Growth ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 399–409 : Auteur(s): Boveng, P., J.L. Bengtson and M.E. Goebel
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Supplementary data on exploited stocks in Division 58.5.1 (Kerguelen)
year to the next (Table 2) in relation to the availability of other exploited species, particularly ... C. gunnari stock should take account of the three-year cycle which has now been revealed, and catch ... rates of fish stocks in the South Georgia and Kerguelen Islands areas. SC-CAMLR-SSPI4: 229-30. 153 ... 20 3 3.3 o 11.6 10 1.6 5 2.1 2 0.0 2 0.2 21 1 1.1 o 11.6 21 20.6 26 11.0 14 0.2 1 0.1 Cohort 1985 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 147–161 : Auteur(s): Duhamel, G.