Search results
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CPUEs, body length and greenness of Antarctic krill during 1987/88 season in the fishing ground north of Livingston Island
or not there was a marked change in two kinds of CPUEs, body length and greenness of krill during the fishing season ... In order to identify whether or not there was a marked change in two kinds of CPUEs, body length ... 'W and between 61°30'S and 62°30'S (Figure 1). Two kinds of CPUEs, catch/tow and catch/towing time (minute ... w z z o 50 40 l- 30 3 o l- ---J: U l- -< U 20 10 o E M JAN L E M FEB L E 10-DAY ... r u F a::: w r w... E- ~~.k-f-. 0 F 20 30 48 50 60 e- LATE FE::; ~I= 220'21 I [ X= 45.9377 ~ SO=: 5.~,871S 20 ~HX= 59 r !1U ... Sc: 336 EAF:LY MAR :20 30 f-1 [DDLE ~IAF: 210 :::0 U~TE ~IAF: 212) 30 X= 46.0183 SD ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 323–338 : Author(s): Endo, Y. and T. Ichii
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Status of the krill stock around Elephant Island in 1991/92 and 1992/93
the austral summers of 1991/92 and 1992/93 are described and compared with information from previous years ... 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 other years appears ... the austral summers of 1991/92 and 1992/93 are described and compared with information from previous years ... difference between the two years was the abundance of salps (Salpa thompsoni - Table 1). Relatively large ... of the previous year's spawn. Substantial proportions of juveniles and krill lengths <30 mm in 1992 (Figures ... ---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 ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 7–33 : Author(s): Loeb, V. and V. Siegel
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Midwater trawl catchability in relation to krill and possible ways of assessing gross catch
calculations. A comparison of the experimental hydroacoustic assessment with the calculated one demonstrated ... of the experimental hydroacoustic assessment with the calculated one demonstrated that the theoretical model agreed ... inserts Average value of krill escapement through the trawl bag, kg/r02 Rhomboid a=lOO (30) mm a=80(20 ... I» o ~ 20 g. f 10 \-l o 0,9 10,7 20,5 30,3 40,1 ~9.9 59,7 3 concentration d.ensity in the zone ... . A comparison of the experimental hydroacoustic assessment with the calculated one demonstrated ... the methods mentioned above. Yu.V. Zimarev was responsible for developing the methodology and running ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 87–113 : Author(s): Zimarev, Yu.V., S.M. Kasatkina and Yu.P. Frolov
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The choice of procedure for deciding when to close fisheries regulated by CCAMLR: a simulation model
. Two models were used: • Type I catch - random catch rates where C is the catch rate for one day ... CJIO)KHO HCnOJIb30BaTb MeTO,ll paClIeTa CPOKOB 3aKpbITH5I TeX npOMbICJIOB, KOTOpbIe' KOHTPOJIHpYIOTC5I ... CeKpeTapHaTOM AHTKOMa. 3TH MeTo.z. onHcaH B COOTBeTCTBYIOII(HX Mepax no coxpaHeHHIO. CcpOPMYJIHpOBaHbI ... Mo.z.eJIH, onHCbIBalOII(He CJIYlIatiHo reHepHpOBaHHbIe cepHH YJIOBOB C KOJIe6aHH5IMH H 6e3 KOJIe6aHHti ... Paper Title: The choice of procedure for deciding when to close fisheries regulated by CCAMLR: a ... simulation model Abstract / Description: The methods, described in CCAMLR Conservation Measures, used for ... deciding the closure date for fisheries monitored by the Secretariat of CCAMLR, have been difficult to ... fluctuating random catch histories are simulated and the performance of four models for making closure ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 81–97 : Author(s): Agnew, D.J.
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Distribution and abundance of Macrourus carinatus on BANZARE Bank in the southern Indian Ocean
of the family Macrouridae (rat tails and grenadiers) have become common by-catch species in recent years due ... the two species. Trunov and Konstantinov (1986) provided a means of separating them based on a number ... (Figure la). At 2 300 km long, the Kerguelen Plateau is one of the largest submarine plateaus ... haul was conducted at one of five random locations. Alternative locations were provided in the event ... Paper Title: Distribution and abundance of Macrourus carinatus on BANZARE Bank in the southern ... Indian Ocean Abstract / Description: This paper provides an assessment of the distribution and abundance ... of Macrourus carinatus on BANZARE Bank in the southern Indian Ocean (Divisions 58.4.1 and 58.4.3 ... ) based on results from a trawl survey in 1999. This is the first quantitative assessment of M. carinatus ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 171–178 : Author(s): van Wijk, E.M., A.J. Constable, R. Williams and T. Lamb
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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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Effect of line sink rate on albatross mortality in the Patagonian toothfish longline fishery
. B 30He T Y P ~ Y ~ ~ H T H O C T H 3a BHHTOM, rAe RPYCbI AepXaTCR BbIJXe, CKOPOCTb IIOrpyXCeHtiII ... OTIIyrHBaHHX IITHQ H CIIyCKalOqHX RPYCbI B 30He T Y P ~ Y ~ ~ H T H O C T H , CKOPOCTb IIOrPYXeHHR RpyCa >0.3 ... . Longline vessels may deploy up to 20 000 baited hooks per day, and during line-setting procedures ... of tens-of-thousands of seabirds killed (SC-CAMLR, 1997). Two methods are adopted in the CCAMLR ... fishery Abstract / Description: An experiment was conducted on autoline and Spanish-system longline ... Paper Title: Effect of line sink rate on albatross mortality in the Patagonian toothfish longline ... based on knowledge of line sink rates and albatross diving abilities. Sink rates of lines deployed into ... . Sink rates to 4 m depth were greatest with 35 m (0.44 m/s) and 50 m (0.33 m/s) between weights. For ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 133–150 : Author(s): Robertson, G.G
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Target strength studies on Antarctic silverfish (Pleuragramma antarcticum) in the Ross Sea
: TS 38 = 36.83Log TL(cm) –103.62 (N = 18); TS 120 = 34.75Log TL(cm) –84.20 (N = 19); TS 200 = 26.71Log ... of the continental slope and shelf of the Ross Sea at depths from 30 to 120 m, during the Italian expeditions of 1997 ... TL(cm) –103.62 (N = 18); TS120 = 34.75Log TL(cm) –84.20 (N = 19); TS200 = 26.71Log TL(cm ... and shelf of the Ross Sea at depths from 30 to 120 m, during the Italian expeditions of 1997/98, 2000 ... (from 12–15% of first year to 20–32% dry weight (DW) of second year; DeVries and Eastman, 1978 ... beam widths (θ) for all three transduc- ers, was used: • two-way beam angle = –20.5 dB • Ψ = 8.9*10 ... –20.6 –20.5 –20.7 by 2007, 2009 calibrations –20.8 –20.1 Two-way beam angle (dB) standardised ... –60.47 0.23 –48.10 3.23 –44.25 1.58 –61.30 0.20 –42.64 1.88 –43.83 3.82 147.5 6.5 –63.00 0.32 –43.71 ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 75–104 : Author(s): Azzali, M., I. Leonori, I. Biagiotti, A. De Felice, M. Angiolillo, M. Bottaro and M. Vacchi
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Assessments of by-catch in trawl fisheries at Heard and McDonald Islands
the total by-catch in a year to the estimates of long-term annual yield, (ii) allowing catches of by-catch ... species of up to 100 kg in any one haul and (iii) changing fishing grounds if the catch of any one ... the total by-catch in a year to the estimates of long-term annual yield, (ii) allowing catches of by-catch ... species of up to 100 kg in any one haul and (iii) changing fishing grounds if the catch of any one ... at the end of 20 years of exploitation should be 75% of the pre-exploitation spawning biomass ... over a 20-year period. The lowest y satisfying these rules was determined for the three projections ... could be a combination of (i) limiting the total by-catch in a year to the estimates of long-term ... annual yield, (ii) allowing catches of by-catch species of up to 100 kg in any one haul and (iii ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 231–243 : Author(s): Constable, A.J., R. Williams and W.K. de la Mare
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The Soviet krill fishery in the Atlantic Sector of the Antarctic from 1977 to 1991: fishing effort distribution and interannual patterns
0 0 0 0 0 0 0 91 7 1. 8 R T M S 92 86 30 4 39 6 20 6 20 2 11 6 89 31 7 49 9 48 4 99 ... fi shery conditions from 1986 to 1990. 0 5 10 15 20 25 30 ... 3–4 4–5 5–6 6–7 7–8 8–9 10–11 11–12 12–13 13–14 14–15 15–16 Krill catches (tonnes/hour) Fr eq ue nc y (% ) 30 25 20 ... in the 15-year period from January 1977 to December 1991, the period during which the Soviet krill fi ... : fishing effort distribution and interannual patterns Abstract / Description: Data on the Soviet krill ... from 1977 to 1991 was 50 086 vessel-days fished, in Subareas 48.3 (45% of the total for the period ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 1–13 : Author(s): Litvinov, F.F., V.A. Sushin, G.A. Chernega and O.A. Berezhinsky