Search results
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A generalised model for evaluating yield and the long-term status of fish stocks under conditions of uncertainty
(a) 1.21 I 0 10 20 30 40 50 60 Length (mm) Selectivity (b) 1.6 1 1 0 2 4 6 Age (years) Relative ... of Uncertainty (a) Run 1 Biomass (thousand tonnes) Recruits (millions) 0 10 20 30 40 50 Years (b) Run ... -exploitation spawning biomass at some time over the 20-year projection period is equal to 10%. + Values ... 1 0.8 0.6 0.4 0.2 0 0 10 20 30 40 50 60 Length (mm) Proportion mature (b) 1.6 ... the spawning stock biomass in accordance with CCAMLR criteria. These specify a bound on the ... specify growth, mortality, age-dependent selectivity and seasonal patterns in fishing mortality. Results ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 31–54 : Author(s): Constable, A. and W.K. de la Mare
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A preliminary assessment of the stock of the ommastrephid squid Martialia hyadesi in the Scotia Sea based on data from predators
a further 51 400 tonnes. M. hyadesi probably has a life span of two years and a circumpolar distribution ... . M. hyadesi probably has a life span of two years and a circumpolar distribution, but its biology and ecology ... . M. hyadesi probably has a life span of two years and a circumpolar distribution, but its biology and ecology ... ~OBOrO BblJlOBa H tlaCTblMH nepexo- ~aMH Ha 3KCnJIyaTaIJ,HIO npOtlHX BH~OB. TaKHM 06pa30M BepOSITHO ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 479–480 : Author(s): Rodhouse, P.G.
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Validation of sink rates of longlines measured using two different methods
, P = 0.859). When the target depth was 15 m, sink rates measured using the bottle method (0.20 ± 0.02 m.s ... using the bottle method (0.20 ± 0.02 m.s–1) were significantly slower than those measured ... –1 to 20 m and were thus 30% slower than those measured to 20 m (Table 1). This difference ... . In this experiment, the sink rates to target depths of 2 and 20 m differed signifi cantly by 30% (Table ... the bottle method (0.20 ± 0.02 m.s–1) were signifi cantly slower than those measured by TDRs (0.24 ± 0.03 ... à une profondeur de 15 m, la vitesse d’immersion mesurée par la méthode de la bouteille (0,20 ± 0,02 ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 179–187 : Author(s): Wienecke, B. and G. Robertson
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Results of Soviet investigations of the distribution and ecology of pelagic squids (Oegopsida) in the Southern Ocean
identified as Brachioteuthis riisei. In recent years (1978-1984) the collection was increased by two or three ... as Brachioteuthis riisei. In recent years (1978-1984) the collection was increased by two or three dozen specimens ... . 125 specimens of that total were identified as Brachioteuthis riisei. In recent years (1978-1984 ... of the Southern Ocean than all other groups of marine animals which usually occur in this vast region or migrate ... cephalopods seems to be due to the fact that they are rarely caught by fishing gear and the ma.in material ... with midwater hauls in the Southern Ocean during studies carried out by the Soviet Union in the years 1965 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/2 (Selected Scientific Papers, SC-CAMLR-SSP/2) : 79-111 : Author(s): Lubimova, T.G.
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Evaluation of the results of trawl selectivity experiments by Poland, Spain and USSR in 1978/79, 1981/82 and 1986/87
2.7 30.0 20;30 18-44 3.1 33.7 ..... 00 \0 Table 7.2: Species: Area: MonthlYear: Mesh size ... ~ 28 ~ 27 + z 26 w -l I 25 (f) G: 24 + 23 22 20 22 24 26 28 30 32 34 MEAN FISH LENGTH ... z 2.6 0 f= u 2.5 w -l w 2.4 (f) +. 2.3 2.2 2.1 + 2.0 20 22 24 26 28 30 32 34 MEAN FISH ... 122 30 218.85 124 30 36.38 126 30 97.40 127 30 77.35 128 30 20.30 Champsocephalus gunnari South ... in 1978/79, 1981/82 and 1986/87 Abstract / Description: Trawl selectivity for several species of ... selectivity experiments in Statistical Area 48 in 1978/79, 1981/82 and 1986/87 seasons. These data comprise ... commercial fishery in Statistical Area 48. File: 13-Slosarczyk-et-al.pdf ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 163–196 : Author(s): Slosarczyk, W., E. Balguerias, K. Shust and S. Iglesias
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An impact assessment framework for bottom fishing methods in the CAMLR Convention Area
of a the local benthic community over years, and ‘negligible’ at the scale of the entire ecosystem over decades ... in the CCAMLR context are defined in Article II, as the risk that human activities will: (i) cause harvested ... 7– 20 08 ). A f ul l im pa ct a ss es sm en t ta bl e w ou ld i nc lu d e se pa ra ... were examined on a year-by-year basis it was apparent that fishing in non-preferred areas has been ... Paper Title: An impact assessment framework for bottom fishing methods in the CAMLR Convention ... between fisheries employing different bottom fishing methods. New Zealand implemented this approach in its ... impact assessment in fisheries using bottom impacting methods, to inform mitigation efforts and as a ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 195–210 : Author(s): Sharp, B.R., S.J. Parker and N. Smith
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Food and feeding of the mackerel icefish (Champsocephalus gunnari) around South Georgia in January/February 1991
or lanternfish (Myctophidae) are of minor importance. In years when krill is abundant it represents the staple ... food. Mackerel icefish then tend to aggregate in areas of krill concentrations. In years of low krill ... are often more dispersed in these years of krill scarcity (Kock, 1981). During the UK Demersal Fish Survey ... 33.7 1 839 21.6 2 777 20.0 3 803 20.7 4 152 3.9 The proportion of empty stomachs varied ... Georgia in January/February 1991 Abstract / Description: The diet composition and feeding intensity of ... mackerel icefish (Champsocephalus gunnari) around South Georgia in January/February 1991 were analysed in 3 ... 877 stomachs collected at 44 stations. Both the proportion of krill (Euphausia superba) in the ... stomachs and the feeding intensity were uncommonly low in a period when energy rich food is needed for the ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 15–23 : Author(s): Kock, K.-H., I. Everson, S. Campbell, G. Parkes, Z. Cielniaszek and J. Szlakowski
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Notothenia (P.) guntheri stock status and TAC estimation in the area of Shag Rocks (Subarea 48.3)
commercially taken age groups (2-4 years); (b) Fishing intensity in the predicted period is at the level ... (2-4 years); (b) Fishing intensity in the predicted period is at the level of 1987/88; (c) Fishing ... 5,50 6,00 5,70 5,70 4,50 5,30 5,30 2 13,50 13,50 14,00 11,50 14,50 13,30 13,30 14,50 20,70 23,30 ... 3 25,20 25,20 27,30 21,60 28,50 25,80 25,80 22,50 31,60 37,90 4 39,00 39,00 37,00 42,50 39,00 39,60 ... 1985/86 1986/87 1 0,900 33,00 11,80 80,90 34,50 19,10 55,10 84,60 20,80 2,68 2 0,900 274,90 21,30 ... 467,50 320,30 46,20 36,20 173,70 454,80 57,88 3 0,900 160,50 91,70 306,70 382,00 43,00 58,90 102,60 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 53-68 : Author(s): Shust, K. and R. Borodin
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The Kerguelen database
4tl.30 Q8.40 U8.50 49..00 119.10 U9.20 u9.30 U9.IIO 09.50 50,00 50.1U 50.2u 50.30 5u.IIU ... ll7 .00 4"1.10 '17 .20 117.30 47.40 47.50 £1\\.00 48.10 aa.20 lIil.3U . '18.40 48.50 u9.00 ... 119.1n 119.20 49.3U 1l9.40 Q9.50 5 O. 00 50.10 50.20 '50.30 50.41) 50.50 51.00 51.1(1 51.20 ... + .' 1 3 70.40 ... 5 1 71.30 + 72.20 + 2 ? 4 513 ... and biological data for the Kerguelen EEZ has been operating in France since 1979. At the end of the ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 23-54 : Author(s): Duhamel, G.
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Preliminary results of a bottom trawl survey around Elephant Island in October and December 1987
and December 1987. >- (,) c Q) :J cr Q) '- 10 20 10 Figure 8: 10 20 30 Chaenocephalus ... cTapllIeM). CocTaB YJIOBOB C. gunnari CI1JIbHO OTJIl1lIaJIC.H OT COCTaBOB YJIOBOB B npe,aw,aYW;l1x ce30 ... as their interactions with the environment and their trophic links with plankton and benthos. In the first years (1975 ... using a 140' bottom trawl with a small meshed liner of 20 mm. Sampling depth varied from 65-458 ... Paper Title: Preliminary results of a bottom trawl survey around Elephant Island in October and ... Polarstern in October and December 1987. Preliminary results indicate rather stable stock compositions in ... Chaenocephalus aceratus, Notothenia gibberifrons and N. neglecta at least since February 1985. In N. rossii the ... proportion of larger (= older) fish in the catches increased. Composition of the catches of C. gunnari ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 185-200 : Author(s): Kock, K.-H.