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1. A simulation study of krill fishing by an individual Japanese trawler

   that scientific surveys be planned to operate in small areas concurrently with fishing vessels. File ... is compared with (and partially tuned to) statistics for a sample of data from the commercial fishery ... -concentration krill distribution parameters only. Indices that distinguish primary searching time from secondary ... collection of the requisite data may not be practical. Other approaches (e.g. research vessel surveys) need ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 1–108 : Author(s): Butterworth, D.S.

2. A compilation of parameters for ecosystem dynamics models of the Scotia Sea – Antarctic Peninsula region

   and Butterworth (2001) reported the number of pods, by species, sighted on surveys of larger strata that also ... 069 (9 831–42 274) and the Branch and Butterworth (2001) data estimating 34 145 (13 163–52 380 ... . Butterworth. 2001. Estimates of abundance south of 60°S for cetacean spe- cies sighted frequently on the 1978 ... . The density of whales in each stratum listed in Branch and Butterworth (2001) was calculated as the product ... compiles parameters for use in the ecosystem dynamic models that are needed to assess these methods. These ... species that feed on krill in this region. Maximum krill transport rates are also derived from the OCCAM ... global ocean circulation model. This parameter set, like most others, is associated with considerable ... uncertainty, which must be taken into account when it is used. The sources, assumptions and calculations at ...

   Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 1–25 : Author(s): Hill, S.L., K. Reid, S.E. Thorpe, J. Hinke and G.M. Watters

3. Line weights of constant mass (and sink rates) for Spanish system Patagonian toothfish longline vessels

   is a consequence of the heavier weight being a mul- tiple of the lighter weight). Research subsequent to Agnew et ... ), with the vari- ant being called the ‘Chilean longline’ (Moreno et al., 2008). If these species are not present ... for the Spanish ‘cachalote’, the sperm whale). Being made from buoyant mate- rial (polypropylene), during setting ... each branch/connecting line was fitted with a mix of 1.8 m or 2.0 m long cacha- loteras (dry weight ... every 40 m averaged 0.22 m s –1 to 2 m depth, which would be equal to, or exceeded by, lines with 5 kg ... with seabirds. The weights typically used are collections of rocks enclosed in netting bags. During ... fishing operations the netting bags abrade on the seabed causing rocks to be lost and the weights to ... become progressively lighter, requiring ongoing repair. This problem can be solved by use of ...

   Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 93–106 : Author(s): Robertson, G., C.A. Moreno, E. Gutiérrez, S.G. Candy, E.F. Melvin and J.P. Seco Pon

4. Detection and quantitative estimation of krill concentrations by hydroacoustic instruments

   in areas surveyed. The task of detecting surface concentrations of krill can be solved with the help ... FIBEX program. It was shown that the hydroacoustic device Simrad SK-120, with TVG switched off, is ... theoretical calculations, the range of detection of individual specimens can be considerably increased at the ... detecting surface concentrations of krill can be solved with the help of towed acoustic antennae. The ... shown that the hydroacoustic device Simrad SK-120, with TVG switched off, is capable of registering ... is very likely that the frequency dependence of krill is similar. However, in order to be sure of ... difficult to detect with the existing hydroacoustic instruments and although such concentrations can be ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 123-139 : Author(s): Yudanov, K.I.

5. Homogeneity of body length composition of Antarctic krill within the commercial zone

   mixed within each haul. They, therefore, recommended the collection of sub-samples from as many ... of these hauls, two krilllength composition samples were taken from each haul, one sample being taken from ... with the length modes being fairly stable (Figure 4). This may indicate that the proportion of various size ... being taken at random? Bulletin of West Japan Groundfish Section. Fisheries Resource Investigations ... that sampling from one part of the haul provides a reasonable estimate of length composition in the ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 17–28 : Author(s): Ichii, T.

6. Small scale krill surveys: simulations based on observed euphausiid distributions

   l(a) and l(b). Although these are not E. superba (being Meganyctiphanes) and are on a very small scale (60 m diameter ... that the coefficient of variation (CV) of mean krill density varies inversely with mean density, and is ... that with probability of Type I and Type II errors 0.1 and 0.2 respectively, about 100 transects would ... be required to detect changes of 40% in the mean if CVs are as high as those obtained in the ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 245–256 : Author(s): Agnew, D.J. and S. Nicol

7. Variations in echosounder calibration with temperature, and some possible implications for acoustic surveys of krill biomass

   -0, H ~ O ~ X O A H M O TWaTeJlbHO I43YYHTb BOnpOC 0 BnMRHHI4 MSMeHYMBOCTM TeMIIepaTypbI B paf io~e C'beMKI4 Ha pe3J'JIbTaTbI ... as being the most accurate and practicable for calibration of ship-borne scientific echosounders (Foote ... undertaken in temperate European waters. The most recent of these took place in August 1995 at Uggdalseidet ... de Q &arts-types. Ta6n~ya 2: Cpen~Ile BeJIHqMHbI YCkIJleHMX npeo6pa3osa~en~ S, M TS, a TaKXe MX ... therefore be made to ensure that echosounders are calibrated at temperatures as close as possible to those ... Paper Title:  Variations in echosounder calibration with temperature, and some possible ... which suggest that echosounder transducer performance is dependent on ambient water temperature. Highly ... European calibration parameters were to be employed during surveys around South Georgia, and no account ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 273–281 : Author(s): Brierley, A.S., C. Goss, J.L. Watkins and P. Woodroffe

8. Bias in the estimation of krill yield from using a deterministic formulation of the median unexploited spawning biomass

   and abundance of the stock being assessed. CCAMLR currently uses results from the krill yield model as a basis ... annual yield on (i) the probability of the spawning stock being reduced below a set proportion ... level given for a set probability of critical depletion being too high. However, this will not affect ... for uncertainty in the biological parameters and abundance of the stock being assessed. CCAMLR currently uses ... of the stock being assessed. CCAMLR currently uses results from the krill yield model as a basis for setting ... yield on (i) the probability of the spawning stock being reduced below a set proportion of the median ... level given for a set probability of critical depletion being too high. However, this will not affect ... K ~ @ O ~ K T ~ M , OKa3bIBaeMbIM 3aAaHHbIM 065eM0~ nOnrOCPOYHOr0 rOAOBOr0 BbIJIOBa Ha (i) BePOXTHOCTb CHaAa HepeCTOBOrO 3aIIaCa ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 1–8 : Author(s): Constable, A.J. and W.K. de la Mare

9. Some specific features of the USSR krill fishery and possibilities of applying fishery statistics to studies of krill biology and stocks

   krill fishery, it is shown that the catch-per-haul variables are associated with the fishing regime of ... the vessel rather than with krill abundance in a certain area. During preparations for regular fishing ... operations very short hauls (under 15 minutes) are practised. Such fishing practice, together with ... -term behaviour patterns have an impact. All these factors limit the extent to which CPUE can be used in ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 237–252 : Author(s): Dolzhenkov, V.N., T.G. Lubimova, R.R. Makarov, S.S. Parfenovich and V.A. Spiridonov

10. The fishery for Patagonotothen brevicauda guntheri in CCAMLR Subarea 48.3

    pa3 npeBblmaJI o6~Hti BblJIOB 3Toro BH;lla B patioHe CKaJI IIIar. IIo ~aHHbIM paHee npoBe~eHHblx ... npOMbICeJI MO:>KHO BeCTH TOJIbKO CeT5.lMH C TaKotf MeJIKotf 5.llJeetf, KOTOpa5.1 TaK:>Ke y,llep:>KHBaeT ... 53° to 54°S and longitude 40° to 44°W. There are no reports of P.b. guntheri being taken as by-catch ... that by-catches will be made it must be remembered that they are being made using gear designed for the target ... species. The small size of P.b. guntheri means that they can only be caught with net meshes so small that ... / Description:  Fine-scale data supplied to CCAMLR for 1987/88 showed that the catches of P atagonotothen ... data and reports to the CCAMLR Working Group on Fish Stock Assessment indicated that this species was ... they would also catch undersized individuals of other, larger species. Survey results suggest that such ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 275–283 : Author(s): Everson, I. and C. Mitchell

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