Résultats de la recherche
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Environment–krill relations in the South Georgia marine ecosystem
were only expressed strongly in years of extreme conditions. The correlation with water temperature was ... 0 73 74 75 76 7 7 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 Year Figure 3: Variation in ... ) 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 - (b) 0 ... longitudes 20°, 30°, 40' and 50°W. For the period 1973 to 1989, a further sea-ice dataset was available ... -72 0 Year Figure 7: Interannual variation in ice-edge position. 1 - at 30°W in October; 2 - at ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 13–30 : Auteur(s): Fedoulov, P.P., E. Murphy and K.E. Shulgovsky
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Sensitivity analysis for parameters of predatory species CCAMLR Ecosystem Monitoring Program
(% Current Value) (20 %) 5 5 (30%) 2 3 Sample sizes required for five years of monitoring and a = 0.10 ... distribution of the data did not differ significantly from normality in either year (Kolmogorov-Smirnov one ... Difference (d) ( 1 0 %) 34 54 (% Current Value) (20 %) 9 1 4 (30%) 5 7 Sample sizes required for five ... (30%) 4 6 418 0.9 88 25 7 4 71 20 0.9 72 1 9 9 71 1 8 8 Table 4 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 411–432 : Auteur(s): Whitehead, M.D.
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Distribution, biomass and characteristics of the Euphausia superba fishery around South Georgia (Subarea 48.3)
results obtained. Surveys were carried out over brief periods, usually one or two weeks. The design used ... WG-KRILL-90/19 DISTRIBUTION, BIOMASS AND ... forces which facilitate the fonnation of krill concentrations is one of the most important factors ... spawned in the island waters are eventually carried away from the region as indeed are adults. Drift ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 123–147 : Auteur(s): Latogursky, V.I., R.R. Makarov and L.G. Maklygin
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Management and uncertainty: the example of South Georgia
comparison of the immediate and long-term effects of any one proposed measure with those of any other measure ... , then catches in the next few years will be very low, perhaps one or two hundred tons in total over ... in the 1980 year-class (paragraph 20 of the report). - 346 - Accepting that the decline in ... cumulative catches will be higher, but with the stocks declining, are unlikely to exceed one or two ... more than a year or two will reduce the total yield from lightly fished or short lived stocks ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 341-353 : Auteur(s): Gulland, J.A.
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Spawning locations of mackerel icefish at South Georgia
following day, two on 20 March and 14 on 30 March. 011 5 April the catch was just three, and no further ... , spawning, South Georgia, CCAMLR INTRODUCTION Over the past 30 years there has been a fishery, large in ... of the same year. Further evidence that spawning occurs in the inshore waters has come from the ... 90-200 m, with all deptl-t ranges sampled in all months. Results from demersal fish surveys have ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 107–118 : Auteur(s): Everson, I., A.W. North, A. Paul, R. Cooper, N.C. McWilliam and K.-H. Kock
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Size at sexual maturity of Patagonian toothfish (Dissostichus eleginoides)
ve r sus 1997) a n d / o r two-mon th periods, or separate year combined w i th two- month ... and associated 95% confidence (fiducial) limits were fitted separately to each year per two-month ... MaylJune 1996 Female July 1997 Female JulyIAugust 60 70 80 90 100 110 120 130 Length (cm) 60 70 80 ... difference in the situation between the two years. We consider two possible interpretations. Either that a ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 37–46 : Auteur(s): Everson, I. and A.W. Murray
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Commercial krill fisheries in the Antarctic, 1973 to 1988
split-years; a split-year being the twelve month period from 1 July in one year to 30 June in the next ... . The catch year is designated according to the second of the two split-years. Krill ST ATLANT data ... but SUN, JPN SUN JPN 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 SPllT-YEAR Figure 2 ... SUN JPN 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 SPLIT YEAR Figure 4: Reported annual ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 229–281 : Auteur(s): Miller, D.G.M.
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Information on the status of fjord Notothenia rossii, Gobionotothen gibberifrons and Notothenia coriiceps in the lower South Shetland Islands, derived from the 2000–2006 monitoring program at Potter Cove
. gibberifrons was observed, more than two decades after the end of the commercial fishery. File: 05barrera-oro ... sampling period of 24 years which began in 1983, and at Harmony Cove in the summers of 2001to 2003. The ... ) Notothenia rossii, total catches Years 19.8835 20 0.994173 14.6162 <0.00001 Error 59.3803 873 0.068019 ... (b) Gobionotothen gibberifrons, total catches Years 9.8124 20 0.49062 42.9468 <0.00001 Error 9.9731 ... 873 0.01142 (c) Notothenia coriiceps, total catches Years 32.4684 20 1.623422 11.8377 <0.00001 ... Error 119.7232 873 0.137140 (d) Notothenia rossii, relative catches Years 53439.18 20 2671.959 ...
Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 83–87 : Auteur(s): Barrera-Oro, E.R. and E.R. Marschoff
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Analysis of albatross and petrel distribution within the CCAMLR Convention Area: results from the Global Procellariiform Tracking Database
added to the database since the report ‘Tracking Ocean Wanderers’ was published. Methods Over 90% of ... between two uplinks was more than 24 hours, no resampling was conducted between these points. Bird ... for the estimation of distribution during the breeding season for all 20 albatross, petrel and ... ). Shearwater tracking data are from two colonies, together rep- resenting <1% of the population of this ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 143–174 : Auteur(s): BirdLife International (prepared by C. Small and F. Taylor)
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Can we use discriminant function analysis to sex penguins prior to calculating an index of a morphometric characteristic?
certain proportion of birds. Two overlapping normal distributions are used to show that there is a ... birds with greater than 80% success, the difference between the true and apparent mean is likely to be ... discriminant function with greater than 80% success may be used to derive statistically robust estimates of ... Type I and Type II errors. Lack of knowledge about the sex ratio between years makes combining the data ... changes may be masked. For instance, if all females are sampled one year, and all males the next, then ... sex of individuals, it is only able to correctly sex a certain proportion of birds. Two overlapping ... discriminant functions are able to correctly determine the sex of birds with greater than 80% success, the ... sampled. Therefore, under most normal sampling regimes a discriminant function with greater than 80 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 259–272 : Auteur(s): Agnew, D.J.