Résultats de la recherche
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Analysis of haul data from the South Georgia krill fishery
vessels at South Georgia. Top panel 1994, middle panel 1995, bottom panel 1996. High catch rates 4 ... $ 600 -- a 0 - , , , , , , , 0 4 8 12 16 20 1200 1000 - 800 - 600 0 0 4 8 12 16 20 Hour ... catches (10 000-20 000 kg) was lowest in 1994, intermediate in 1996 and highest in 1995. The total ... fishing area over the bank to the north of Cape Charlotte. Thus, the top 10% of catch rates (kilogram ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 9–30 : Auteur(s): Trathan, P.N., I. Everson, E.J. Murphy and G.B. Parkes
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A simulation study of krill fishing by an individual Japanese trawler
. A major inconsistency is found: haul times are a factor of 4-5 times greater in reality than in the ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 1–108 : Auteur(s): Butterworth, D.S.
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By-catch of fishes captured by the krill fishing vessel Chiyo Maru No. 2 in Statistical Area 58 (January to March 1995)
(Table 1, haul no. 17) were excluded from all analyses. These data were excluded because only about 20 ... 'unknown myctophids' occurred in 20% of the hauls sampled for by-catch (Table 1). Other fish species ... decreasing Slosarczyk and Rembiszewski l982 Poland RV Feb-Mar 1981 48.1 60 - 3700 23 C ... krill (Figure 6, top two panels). This observation is different from observations made in previous ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 111–123 : Auteur(s): Watters, G
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Methodology of data collection on net selectivity and accidental mortality of fish passing through the mesh of the codend
3 13 23 4 14 24 5 15 25 6 16 26 7 17 27 8 18 28 9 19 29 10 20 30 - 114 - ___ .n ... ~ TpaneHHH, npO~O~HTenbHOCTDID 60 MHH Ka~oe. 3a~eTHHM C~HTaeTCH 6esaBapHHHoe TpaneHHe C ynoBoM He MeHee ... - JIH ,IJ;JIH COe,IJ;HHeHHH KOHTeHHepa C KYTKOM (pHc.4). B nepe,IJ;HeH 'qaCTH KOHTeHHepa Ha paccToHHHH ... TpaneHHe; 3. rrpH TpaneHHH npH nOMOrn;H rrnaHIlIHpHoro nara HSMepHIDT CKOPOCTD 6YKCHPOBKH Tpanai 4 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 99-121 : Auteur(s): VNIRO (USSR)
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Joint Polish/American hydroacoustic survey of Elephant Island and the vicinity of King George Island, 1988
), then squared and summed into 1 m depth intervals and averaged for 60 pings (1 min). The estimate of ... 372 I I = 120 KHZ BIOMASS' 1988 ~ = 20~ KHZ BIOMASS 1988 TONS/1000. (Bransfield Strait) 200r ... parameters of the systems used. 4. DISCUSSION The survey in areas covered last year were very comparable ... estimated 200 kHz data (Figure 3) is about half that of 1987 as is the total biomass (Figure 4). The ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 357–377 : Auteur(s): Macaulay, M.C.
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Precautionary measures for a new fishery on Martialia hyadesi (Cephalopoda, Ommastrephidae) in the Scotia Sea: an ecological approach
with about 60 000 tonnes of I. argentinus. In February 1996 another BAS research cruise at South ... generations. Date of Drift 17/18 June 18/19 June 19/20 June 20/21 June 21 /22 June 22/23 June 23/24 ... down the encounter rate in their surveys by 20" intervals of longitude. The estimate for consumption ... no data 176-258 no data % Total Squid (M. hyadesi) 17.5 17.5 15-20 Sampling Months ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 125–139 : Auteur(s): Rodhouse, P.G
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Beyond MSY: a consideration of definitions of management objectives
chiefly be a matter of maintaining an adequate adult stock, which has been the top priority in ... discussions over the precise location of the maximum. The IWC has used a value of 60%. In the U.S. the ... from that giving MSY (usually taken as 60-70% of maximum) upwards. For fish, there is as yet no ... these stocks at 50 or 60% of the unexploited level would be unnecessarily cautious. - 309 - In ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 299-322 : Auteur(s): Gulland, J.A.
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Status of the Polish FIBEX acoustic data from the West Atlantic
(1986): M V B S = ~ O ~ O ~ L - ~ O ~ O ~ A R - S L - V R + 20 log R. + 2aRo - 10 log (c 212) - 10 ... C is (BTOMASS, 1991). an equipment constant (20 dB). MVBS values with time and positional data ... -60. Everson, I. and C. Goss. 1991. Krill fishing activity in the south-west Atlantic. Ant . Sci ... ., 3 (4): 351-358. Ichii, T. and M. Naganobu. 1996. Surface water circulation in krill fishing areas ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 125–132 : Auteur(s): Trathan, P.N., J. Kalinowski and I. Everson
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Integration of CPUE data into assessments using the Generalised Yield Model
the spawning stock biomass (SSB) fell below 20% of its pre- exploitation level. For simplicity of ... . 1999. Using additional information for generalised yield model. Document WG-FSA-99/60. CCAMLR, Hobart ... ~ ~ o i i c r a T b e n p e a n a r a e T c x M e T o n n K n I o u e H I 4 z r l t ~ @ O p ~ a u ... toothfish, projections include the time series of survey estimates of recruitment of age 4 fish into the ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 65–74 : Auteur(s): Kirkwood, G.P. and A.J. Constable
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Maximum entropy reconstructions of krill distribution and estimates of krill density from acoustic surveys at South Georgia, 1996–2000
( 19 97 ), JR 28 ( 19 98 ), JR 38 ( 19 99 ) an d A T L D ( 20 00 ). A xe s ar e ... estimates of krill density at South Georgia, December/ January 1998/99. Document WG-EMM-99/20. CCAMLR ... acoustic survey data. ICES J. Mar. Sci., 60 (3): 446–452. Gull, S.F. and G.J. Daniel. 1978. Image ... reconstructions (N scales = 7), each blurred by a further linear factor of 2 (ICF widths 0, 1, 2, 4, 8, 16 and ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 91–100 : Auteur(s): Wafy, M.H., A.S. Brierley, S.F. Gull and J.L. Watkins