Search results
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A compilation of parameters for ecosystem dynamics models of the Scotia Sea – Antarctic Peninsula region
breeding adult per year. Derived krill demand estimates are for the adult portion of the relevant ... Peninsula region, showing the SSMUs (names in Table 2), boundary areas and sites mentioned in the text ... , 2005). A subset of output was used. This covered the model domain 45º–75ºS 100º–20ºW and the upper ... velocity fi eld was calculated over a 19-year run of this model (1985 to 2003). Prior to use ...
Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 1–25 : Author(s): Hill, S.L., K. Reid, S.E. Thorpe, J. Hinke and G.M. Watters
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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 ... in 19 Potter Cove specimens. In some cases scale readings gave a result of one year more. This could ... and scales (scales indicated 1-2 years less). North et al. (1980) mentioned the difficulty in discriminating ... .4-33.9 32.13 3 31-31.6 31.2 5 30.1-33.2 32 30.4-38 34.2 32.5 + 46 +9 + 20 >-' Ut Ul Table ... 20.5 20 20.2 21.7 21 25.7 25.6 25.8 25.5 25.6 27.1 22.3 29.5 29.1 29.5 29.6 29.5 30.6 23.2 20 ... 16 18 20 22 24 26 28 30 32 34 36 38 TOTAL LENGTH (cm) Figure 3: Distribution of length frequencies ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 143-160 : Author(s): Barrera-Oro, E.
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CCAMLR ecosystem monitoring and a feedback management procedure for krill
. r JIaBHbIM npOMbICJIOM B 30He .lleHCTBH5I KOHBeHIJ,HH AHTKOM 51BJI5IeTC5I npOMbICeJI KPHJI5I. B HaCT05lIQeH ... pa60Te paCCMaTpHBaeTC5I KaKHM 06pa30M MO:>KHO BKJIIOlIHTb B CTpaTeiHIO ynpaBJIeHH5I 3THM npOMbICJIOM ... on options in Article IX of the CCAMLR Convention and dictated by the management procedure (see de la Mare ... that the objectives set out in Article IT of the CCAMLR Convention are not contravened. 346 3. APPROACHES ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 345–350 : Author(s): Constable, A.J.
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Protecting young fish and spawning aggregations of Champsocephalus gunnari in Subarea 48.3 (South Georgia): a review
CCAMLR 'fishin year' would begin on 1 December of each year and end on 30 November of the fc%owing year ... 0 HOBbIX CpOKaX 72lKPbITOTO Ce30Ha - C 1 M a p T a no 3 1 MaR. Resumen Se consider6 la necesidad de ... ) for many years. Despite the lack of recent data, there is evidence from the earlier period ... following the introduction in 1998 of a new CCAMLR 'fishing year' (CCAMLR, 1998, paragraphs 9.1 and 9.2 ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 75–86 : Author(s): Parkes, G.B
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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
was represented by three length groups: 20–24, 32–41 and 42–56 cm. N. gibberifrons was also represented by three ... . P. georgianus was represented by three length groups : 20–24, 32–41 and 42–56 cm ... 45 140 h 30' 178.9 17.9 1273 635 -..J 300 76 191 26 1 44 0\ III 11 55 172 h 20'- 290.0 26.4 1683 ... 0 ___ I I i I I I i i I '/9f£J/86 (XII-!) n-687 2 4 6 8 Age grcups (years) 200 O~~~I~~~I~~~I==~~I==~~ 20 3J 40 50 ... 8 20 30 40 ~ Total length (cm) Length and age frequency distribution of Pseudochaenichthys ... of C. aceratus was 25-72 cm. P. georgianus was represented by three length groups : 20-24, 32-41 and 42-56 cm ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 65-97 : Author(s): Kreft, K. and J. Szynaka
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Age, growth and size at sexual maturity of Macrourus carinatus caught as by-catch in Australian sub-Antarctic trawl fisheries
and McDonald Islands (Division 58.5.2) in 1992 and 1993. The range of estimated ages was 4 to 25 years ... of estimated ages was 4 to 25 years. There were no significant differences in growth parameters calculated ... whitsoni from the Ross Sea. 0 100 200 300 400 500 600 700 0 5 10 15 20 25 30 Age (years) To ta ... Distal Proximal Dorsal Ventral van Wijk et al. 142 0 5 10 15 20 25 30 -500 -400 -300 ... by the dashed lines. 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 200 250 300 350 400 450 ... end of each bin. 0 5 10 15 20 25 30 200 250 300 350 400 450 500 550 600 650 700 Total length ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 139–151 : Author(s): van Wijk, E.M., R. Williams and A.J. Constable
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Estimation of krill (Euphausia superba) mortality and production rate in the Antarctic Peninsula region
a P/B ratio of 0.88 to 0.94 for different years. The exchange rate of water masses and krill biomass within ... ). Production was estimated and resulted a P/B ratio of 0.88 to 0.94 for different years. The exchange rate ... for 1 to 2 year old krill and M = 0.6 for 2 to 3 year old animals. The problem arises that Brinton and Townsend ... (1984) based their calculations on a three year life span of krill. Their age group 1 (20 to 43 mm ... ), for example, supported data on length frequencies from whale stomachs and found high abundances of 20 to 30 ... 3: Absolute krill abundance in the Antarctic Peninsula survey area for different years. 30 • PN87/88 29 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 159–176 : Author(s): Siegel, V.
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Statistical problems in krill stock hydroacoustic assessments
to be not the absolute amount of biomass present in an area, but rather how it is distributed. The issue of patchy years ... to be not the absolute amount of biomass present in an area, but rather how it is distributed. The issue of patchy years ... in an area, but rather how it is distributed. The issue of patchy years vs more even distribution would ... surveys in two consecutive years giving identical biomass for a surveyed area, in one, the biomass ... . If such an individual encounters a patch (a patch dominated year) it can quickly obtain sufficient food for its needs ... of patches in 1984. The shaded area is approximately 20 n miles from Seal Island (the estimated foraging ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 301–309 : Author(s): Macaulay, M.C.
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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 ... years) in pup growth rates, the loss of power associated with obtaining weight samples on only three ... ------- ------- 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 ... + + 15 20 25 CHANGE IN 30 35 40 GROWTH 45 50 RATE Figure 2: If the weighing period is limited ... CURVES: 4 weighing dates 28-day intervals 50 pups/day 15 20 25 30 35 40 45 50 CHANGE IN GROWTH ... Numerical simulations were used to investigate the power of methods for detecting changes (between years ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 399–409 : Author(s): Boveng, P., J.L. Bengtson and M.E. Goebel
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Spatially explicit population dynamics models for Antarctic toothfish in the Ross Sea region
15 20 25 30 Age (years) 1.0 0.8 0.6 0.4 0.2 0.0 S el ec tiv ... (median of about 20 km after a year at liberty, see Parker et al., 2013), suggests that the assumption ... ‘year’ refers to the period in which most of the season occurs, e.g. the period 1 December 1996 to 30 ... 31.3 3.5 7.9 29.5 5.4 12.5 30.8 881D 5.9 4.2 9.4 2.1 4.3 27.4 0.0 0.0 - 881E 4.2 6.5 20.3 3.6 7.0 ...
Science Journal Paper : CCAMLR Science, Volume 21 (CCAMLR Science, Volume 21) : 19–37 : Author(s): Mormede, S., A. Dunn, S. Hanchet and S. Parker