Search results
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By-catch of fish in the krill fishery
, USSR 381 1. INTRODUCTION During the past 20 years a major krill fishery has become established ... on dense krill swarms may have only a minor effect on the icefish. Approximately one haul in 20 ... 13 500 600 50 60 25 1025 1.08 70 19 4 54 29 35 7 400 500 40 40 30 1745 1.83 71 20 4 54 14 35 18 250 ... in 1981 (continued) 110 20 5 53 10 36 13 3000 3000 100 100 245 0.70 111 20 5 53 37 36 30 620 620 37 54 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 381–401 : Author(s): Everson, I., A. Neyelov and Y.B. Permitin
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Size at sexual maturity of Patagonian toothfish (Dissostichus eleginoides)
leading to an enlarged ovary of about 20% of the fish total mass. Spawning occurs in the period July ... for non-response (usually called 'immunity' in the language of bioassay - see Finney, 1978, Chapter 20 ... . I L,,, spawners / Proportio n l spawning Figure 1: Diagrammatic representation of a situation whereby only 80 ... Male MaylJune 1997 Male JulylAugust 60 70 80 90 100 110 120 130 Length (cm) Figure ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 37–46 : Author(s): Everson, I. and A.W. Murray
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The fishery for Patagonotothen brevicauda guntheri in CCAMLR Subarea 48.3
9 o 7 6 6 4 3 2 1 o - - - - - - - - - ~ - - - - - - - - - t5 ) \~ I 10 I 11S I 20 21S 30 I 31S T 40 41S I ISO IS IS 80 81S 7i I Size ... than 20 cm. They are not covered by any of the minimum mesh regulations included in Conservation ... species. P.b. guntheri are small fish and rarely grow larger than 20 cm (Figure 1). In order to catch ... permitted for C. gunnari is 80 mm which, providing the provisions of Conservation Measure 2/III section ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 275–283 : Author(s): Everson, I. and C. Mitchell
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Consideration of major issues in ecosystem monitoring and management
Recruitment normal 50% Survivorship 0 1000 2000 3000 4000 0 10 20 30 40 50 60 70 80 90 100 Year Po pu ... and management 0 20 40 60 80 100 0 2 4 6 8 10 Age at first breeding Su rv iv or sh ip (% ) 0.5 ... Chicks 1.0 Chicks 1.5 Chicks 2.0 Chicks 0 20 40 60 80 100 0 2 4 6 8 10 Age at first breeding Su ... trip duration 2–3 months Several days 20–100 C2 Pup growth 2–3 months 2–3 months 30–150 Calendar dateP ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 213–232 : Author(s): Everson, I
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Seasonal and inter-annual variability in the distribution of Electrona carlsbergi in the southern Polar Front area (the area to the north of South Georgia is used as an example)
** 9 to 12 December, 1988 687 17885 7 -102 26.0 18 to 20 December, 1988 676 11278 9 - 80 16.7 * density ... with a smaller vertical extent of between 20 and 200 m. Daily vertical migration at this time was weak, which ... ). \ , \ , .\ .. ' ;.! \ \ .' \ ------\ \. \ \ \ Figure 10: Echocharts of E. carlsbergi concentrations in the evening (19:00 to 20:00) at depths of 40 ... of E. carlsbergi concentrations during the day [17:00 to 18:00 (a)] at depths of 70 to 80 m in the area ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 337–367 : Author(s): Kozlov, A.N., K.V. Shust and A.V. Zemsky
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Environment–krill relations in the South Georgia marine ecosystem
0 80 (a) 0 0 c 70 0 . 5 60 O 8 2 S 5 0 ~ O o 0 W 4 0 - 3 0 r = 0.57 8 30 , 20 ... longitudes 20°, 30°, 40' and 50°W. For the period 1973 to 1989, a further sea-ice dataset was available ... 7 7 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 Year Figure 3: Variation in CPUE indices ... absolute values in December- the range of 0.80-0.93. The M-AT indices were January and May-June and high ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 13–30 : Author(s): Fedoulov, P.P., E. Murphy and K.E. Shulgovsky
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Seabird mortality in the Patagonian toothfish longline fishery around Crozet and Kerguelen Islands, 2001–2003
0. 72 0. 44 W hi te -c hi nn ed p et re l 20 0 00 –3 0 00 0 80 0 00 1 11 ... (2005): 53–80 53 SEABIRD MORTALITY IN THE PATAGONIAN TOOTHFISH LONGLINE FISHERY AROUND CROZET ... two periods (Figure 1): from October to November (in 2001/02, 17.2% of mortality for 20 ... Mean mortality rate (Number seabirds/thousand hooks) 0.63 ± 0.04 (0–52.5) 0.46 ± 0.02 (0–20 ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 53–80 : Author(s): Delord, K., N. Gasco, H. Weimerskirch, C. Barbraud and T. Micol
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Age–length composition of mackerel icefish (Champsocephalus gunnari, Perciformes, Notothenioidei, Channichthyidae) from different parts of the South Georgia shelf
la region comme cela a kte dkmontre a plusieurs reprises dans les annkes 70 et 80. Anx H3yYeHHrl ... dPcadas del 70 y 80. Keywords: C. glrirrinrr, length-age composition, juveniles, immature and mature ... generator with one trawl station for each 80-100 miles2, with no less than three stations per stratum ... 1 and 6% of total body weight), IV - prespawning (between 10 and 17%), V - spawning (between 15 and 20%) and V1 ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 133–146 : Author(s): Frolkina, G.A
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Status of the krill stock around Elephant Island in 1991/92 and 1992/93
---20---30---40---50---60---70---80---90---~00 ST-3 3 - ST-5 - 0 ST-30 7 ST-4 9 ST-46 ST-61 ST ... (Dlink/Dmax)*100 Variable 1---10---20---30---40---50---60---70---80---90---100 (b) ST-1 - ST-2 ST-48 ... l6 20 26 30 36 40 46 60 66 80 Total Length (mm) Frequency % 10 16 90 26 SO S6 40 46 60 66 80 ... 20 25 30 35 40 45 50 55 6 0 Total Length (mm) Frequency % j 4 1 Frequency ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 7–33 : Author(s): Loeb, V. and V. Siegel
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Champsocephalus gunnari stock status in the South Georgia area
o 35 1479 140 0 82_~ 2..D7_ ~.07_ _ 3.4A 7.61 3.04 105.~~.1~ ... _35.80._ 9LOO 167.90_ 170.20 215.50 ... HaHMeHbweti l.IHCJIeHHOCTH rrOrrOJIHeHH5I H cy~ecTByIO~eti HHTeHCHBHOCTH rrpOMbICJIa Fo 1=0,439 (OllY=15-20 ... rr03BOHKOB PbI6 C u,eJIbIO orrpe,l\eJIeHH5I HX B03pacTa. BorrpocbI HXTHOJIOrHH 20 (6): 941-944 JIHCOBEHKO ... B03paCT- K03cpqm:IJ;HeHT CE30HbI Ha51 eCTecTBeHHoH rpynna cMepTHocTH 1976/77 1977/78 1978/79 1979/80 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 1-18 : Author(s): Borodin, R. and P. Kochkin