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Size and density of krill layers fished by a Japanese trawler in the waters north of Livingston Island in January 1988
information on the layers fished by a Japanese trawler during the co-operative survey with RV Kaiyo Maru on ... was recorded on a net recorder chart. 3. RESULTS AND DISCUSSION The number of aggregations per ... layer length ranged from 241 m to 6.0 km with a mean of 3.25 km (N=38, SO=1.66 km) (Figure 3a). The ... intersected length of six swarms encountered in a tow ranged from 37 to 370 m with a mean of 135.8 m (SO ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 339–345 : Autor(es): Endo, Y. and Y. Shimadzu
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Response to Everson (2008)
krill in the southwest Atlantic has been estimated as 109.4 million tonnes with a standard deviation ... wrong’ with either or both methods, and has implied that since, in his opinion, the MaxEnt approach is ... is) the fault must lie with the MaxEnt approach. The two methods are however quite different ... to the total stratum area. For a single survey stratum, the mean density is determined with the ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 195–198 : Autor(es): Brierley, A.S., B.G. Heywood and S.F. Gull
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Estimating confidence intervals for fish stock abundance estimates from trawl surveys
, a YTO PaCCYATaHHbIe AOBepHTeJlbHbIe HHTepBanbl 6 n k 1 3 ~ ~ K BePORTHOCTH HOMHHaJIbHOTO OXBaTa. A ... -statistics, as a basis for confidence interval estimation, to species with patchy distributions, such as ... equations (3) and (5) are more efficient estimators (have lower expected standard errors). Confidenhce ... distribution with one degree of freedom, at the a probability level. An asymptotic confidence interval for ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 203–207 : Autor(es): de la Mare, W.K
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Determination of Antarctic krill acoustic back-scattering cross-section
independence of random values, where ao -4 - G ·ao (3) mean acoustic back-scattering section for the ... -directional antenna is determined by expression With where em d A 1(7Td)2 e2 2" X- . m maximum ... measurements, the following parameters of the echo sounder were determined : p = 49 103 Palm, = 3.1 10-3 v ... /Palm, = 20 103 • The echo signal level was determined with the help of an osciiograph which was ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 141-152 : Autor(es): Protaschuk, V.A. and T.A. Lukashova
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Trends in population size and breeding success at colonies of macaroni and rockhopper penguins, Marion Island, 1979/80–1995/96
BCerO nepMOAa MCCJIeAOBaHklX YMCJIeHHoCTb ca~0f i ~pyI I~0f i M 3 TpeX H3yYaBLIIMXCII K O J I O H M ... KOnMYeCTBa pa3MHOXaK)wMXCII nap B 0 BCeX KOJIOHMRX - 3 T 0 OTPMuaTeJIbHaR KOpPenRQMII MeXJJy ABYMX ... COCCAHMMM KOJIOHMRMM, Y T O rOBOpHT 0 B O 3 M O X H b I X MMrpaUMRX MeXAy KOJIOHRIIMA. 3a BeCb IIepMOn ... MCCneAOBaHMR YkICneHHOCTb ABYX CaMbIX KPYnHbIX M 3 TpeX M3y~IaBLIIMXCR ~0n0~Mfi XOXJIaTblX nMHrBMHOB ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 89–103 : Autor(es): Cooper, J., A.C. Wolfaardt and R.J.M. Crawford
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Choosing distance between acoustic survey tacks
. * * * * * * * * * * BbIEOP PACCT05IHM5I MIDK.lI:Y fAJICAMM nPM AKYCTMQECKOl1 C1EMKE M.n.KanHXMaH, 3.M. KH3Hep, E.P ... with the lowest expenditure. Since the error in biomass assessment depends on the variability of ... assessment error and the tack frequency when surveying density fields with different * The variation ... series of surveys with different distances between tacks was simulated for each field of density ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 153-164 : Autor(es): Kalikhman, I.L., Z.I. Kizner, B.R. Zaripov and W.D. Tesler
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The use of analysis of penguin stomach contents in simultaneous study of prey and predator parameters
diferentes niveles de digesti6n. A study of penguin diet conducted simultaneously with monitoring prey ... season). Sampling of krill introduces the problem of net selectivity which, together with krill swarming ... behaviour, makes it extremely difficult to ensure that the area of sampling coincides accurately with the ... penguins is at least open to question. Results shown in Table 3 are much more interesting. When samples ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 367–375 : Autor(es): Marschoff, E. and B. González
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Homogeneity of body length composition of Antarctic krill within the commercial zone
of X2 exceeded the critical value of X2 with (m-I) (k-l) degrees of freedom, Ho was rejected. This ... test is not really suitable for DU smaller than 5. Therefore length classes with DU
with ... adjacent classes to increases DU to 5 or larger. 3 . RESULTS AND DISCUSSION Results for each haul are ... areas where length compositions were bimodal. As shown in Figure 3, in areas where the overall length ...Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 17–28 : Autor(es): Ichii, T.
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Biomass of myctophids in the Atlantic sector of the Southern Ocean as estimated by acoustic surveys
.w. 11 8° - 48° 3.,ll.) 6biJia noJiyqeHa s XO,lle BbinOJIHeHHSI aKyCTHqecKHX CbeMOK B TeqeHHe ... trawl with a small-meshed insertion (12 mm mesh) in a trawl bag was used. 418 Mesh density of ... ) w- 103crkg(L) then cr(L) = 41t · 100.1-TS(L) (3) crkg
= cr~) (4) where PN = mean density ... of their biomass as compared with results of control trawlings (coefficient of trawl catchability ... Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 417–431 : Autor(es): Filin, A.A., K.V. Gorchinsky and V.M. Kiseleva
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Homogeneity of Adélie penguins as krill samplers
BapHal1,HH (-0,26) He~ OTJIW-IaJIC5I 3Ha4HTeJIbHO OT HyJI5I (F=0,093; 3 = 0,54). 3TOT pe3YJIbTaT nO,ll ... . Finally, we will test the hypothesis that Ad6lie penguins are uniform with respect to prey selection. 2 ... original set of 11 birds. The variance component due to penguins was then recalculated with different ... values of c until a significant result was obtained. 254 3. RESULTS A total of 11 marked Ad6lie ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 253–257 : Autor(es): Marschoff, E. and B. Gonzalez