Résultats de la recherche
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The survivorship of rays discarded from the South Georgia longline fishery
made at 6 and 12 hours to establish the condition of each animal. During the initial stages of the ... additionally signifi cant factor was sex, although there were suggestions that wind speed and animal size ... 12 hours, adjusted for the ‘50% survivorship’ category of Table 1. 0% 20% 40% 60% 80% 100 ... 20 0 Endicott and Agnew 160 Table 4: Results of a binomial GLM in S-plus examining the ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 155–164 : Auteur(s): Endicott, M. and D.J. Agnew
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Quantification of Southern Ocean phytoplankton biomass and primary productivity via satellite observations and biogeochemical models (submitted to the 2008 Joint CCAMLR-IWC Workshop)
calculate primary productivity, usually in units of mmolC m–2 or mgC m–2 per unit time (day or year). In ... based on location and day of year, Copt can be fairly well estimated by Csat (Behrenfeld and Falkowski ... shelves/coasts, the marginal ice zone and open-ocean fronts. Their one-year time series of productivity ... highest monthly productivity number they calculated (based only on one year of data, 1997/98) was in ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 247–265 : Auteur(s): P.G. Strutton, N.S. Lovenduski, M. Mongin and R. Matear
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Age determination of Champsocephalus gunnari Lönnberg, 1905 (Channichthyidae) taken in the South Georgia area in 1990
-26 and 30-34 cm. Only vertebra samples (n =140) were used in age determination. Age groups from 1+ to ... /86 year classes. The first small peak corresponds with the strong 1988 year class. File: 17 ... had three peaks corresponding to size groups of 16-18, 24-26 and 30-34 cm. Only vertebra samples (n ... size composition correspond with fish of the 1987 and 1985/86 year classes. The first small peak ... corresponds with the strong 1988 year class. Re.sume En janvier/fevrier 1990, la Grande-Bretagne et ... points culminants correspondant aux groupes de taille de 16 a 18, de 24 a 26 et de 30 a 34 cm. La ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 285–293 : Auteur(s): Kochkin, P.N.
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A review of the effectiveness of streamer lines as a seabird by-catch mitigation technique in longline fisheries and CCAMLR streamer line requirements
line: UW IW-50 Two streamer lines: IW-50+Cannon 10 20 30 40 50 ... shing location, time of year and weather conditions are also likely to affect the performance of ... year of that study, seabird catch rates were lower using paired streamers, but differences were small ... November 2002 (Table 1). Streamer lines had an aerial extent of 30 to 70 m depending on sea state ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 189–201 : Auteur(s): Melvin, E.F., B. Sullivan, G. Robertson and B. Wienecke
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Analysis of variability of krill size and fish by-catch in the Japanese krill fishery based on scientific observer data
Bayesian model. The models were composed of multistage cluster units (i.e. year, subarea, vessel, cruise ... , subareas and vessels. The potent interaction effect between year and subarea suggests large spatio–temporal ... parameters estimated by the Markov chain Monte Carlo (MCMC) method hardly show difference among years ... th (m m ) 60 50 40 30 20 (a) Adult size in Subarea 48.1 Overall trend Year E st im at ... Year E st im at ed m ea n le ng th (m m ) 60 50 40 30 20 (c) Adult size in Subarea ... 40 30 20 (e) Year Area Y–A Ves. Cruise Haul Ind. Va ria ... . ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● 0 10 20 30 40 ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 31–47 : Auteur(s): Okuda, T. and M. Kiyota
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New data on spawning, hatching and growth of Champsocephalus gunnari on the shelf of the Kerguelen Islands
the inner shelf has enabled a new cohort of fish to be identified each year. However, annual ... outer shelf. The three-year cycle observed previously seems to be related to the maturation stage of ... taken both by bottom trawl (30' duration; 12 to 20 stations, depending on weather and bottom ... - - - ' , ' i " " " ' " " " ' I " " 0 10 20 30 Total length (cm) Figure 2: Quarterly LFDs for C. gunnari ... J l l l l l / , , , 3 I " " " " I " " . I ' I ' ' " ' E a 0 10 20 30 2. 0 Total length ... 1971/72, yielded annual catches up to 30 000 tonnes in the first years of exploitation (Gerasimchuk ...
Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 21–34 : Auteur(s): Duhamel, G
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Status of the krill stock around Elephant Island in 1991/92 and 1992/93
. The length frequency 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 ... austral summers of 1991/92 and 1992/93 are described and compared with information from previous years ... other years appears to be associated with female maturity development and spawning during the early ... . Loeb and Siege1 (Dlink/Dmax) *l00 Variable 1---10---20---30---40---50---60---70---80---90---~00 ST ... ST-4 3 ST-59 -7 ST-58 -L ST-71 ST-4 4 ST-72 (Dlink/Dmax)*100 Variable 1---10---20---30---40 ... (clusters 1 to 3) during January 1992. Cluster 1 N = 863 10 15 20 25 30 35 40 45 50 55 6 0 Total ... . Frequency % 12 "l l0 l6 20 26 30 36 40 46 60 66 80 Total Length (mm) Frequency % 10 16 90 26 SO S6 ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 7–33 : Auteur(s): Loeb, V. and V. Siegel
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A compilation of parameters for ecosystem dynamics models of the Scotia Sea – Antarctic Peninsula region
offspring produced per breeding adult per year. Derived krill demand estimates are for the adult portion ... month, a depth-weighted mean velocity fi eld was calculated over a 19-year run of this model (1985 to ... mortality rate (Table 9). In addition, a substantial proportion of adult females do not breed each year ... constant throughout the year. Chick requirements during the breeding season were added to those of adults ...
Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 1–25 : Auteur(s): Hill, S.L., K. Reid, S.E. Thorpe, J. Hinke and G.M. Watters
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Preliminary results of investigations of the Federal Republic of Germany on Notothenia rossii marmorata (Fischer, 1885) in January/February 1985
rebuild the stock around South Georgia might be successful. Although reported catches in recent years have ... meshed liner of 20 mm (figs. 1,2). Total length of the spcci.mcn.s wDi:; 1nec1sured to Ll1e nearest cm ... conbncd to Lhe east and southeast of the island where yields varied beLween 2 and 5100 kg/30 min. 'Ihe ... . Maturity in males is reached at a smaller size and about one year earlier than in females. - 40 ... - 1982/83) have been low (KOCK, UUHAMF.L & HUREAL:, 1985, L::1ble 30): a. Stock size is probably still ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/2 (Selected Scientific Papers, SC-CAMLR-SSP/2) : 33-57 : Auteur(s): Kock, K.-H.
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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 ... catches (tonnes/hour) Fr eq ue nc y (% ) 30 25 20 15 10 5 0 9–10 9 Soviet krill fi shery ... between subareas in the 15-year period from January 1977 to December 1991, the period during which the ... 99 8 28 2 57 1 19 78 14 2 80 3 89 9 23 11 6 63 7 89 8 20 1 89 0 19 ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 1–13 : Auteur(s): Litvinov, F.F., V.A. Sushin, G.A. Chernega and O.A. Berezhinsky