Resultados de la búsqueda
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Note on relationship between the Antarctic krill and annual variation of ice edge during 1979 to 1992
Abstract: During 1979 to 1991, relationship between the size of Antarctic krill and the extent of ... the sea ice in the sea area around the South Shetland Islands are described. Mean size of krill near ... . This implies that strong recruitment of small size krill had occurred just after the season with the ... the Antarctic circumpolar trough. Therefore, it could be suggested climate and ecology of krill ...
Meeting Document : WG-KRILL-93/26 : Autor(es): M. Naganobu and S. Kawaguchi (Japan)
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Status of the krill stock around Elephant Island in 1991/92 and 1992/93
Abstract: Krill stock composition and distribution patterns in the vicinity of Elephant Island ... . The general distribution of krill length and maturity classes conformed to previous descriptions and ... appears to be a recurring and predictable aspect of the krill stocks in the Antarctic Peninsula region ... months. The overall abundance, maturity stage composition and reproductive activity of krill appeared to ...
Meeting Document : WG-KRILL-93/08 : Autor(es): V. Loeb (USA) and V. Siegel (Germany)
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Estimation of the biomass of krill in Prydz Bay during January/February 1991 and February/March 1992 using echo integration
Abstract: Hydroacoustic surveys of the abundance of krill (Euphausia superba) in the Prydz Bay ... association of krill with the shelf break in the western part of the survey area but also found that the shelf ... break was in general not a region of relatively high krill abundance. The mean surface density of krill ... between 1981 and 1985 (Higginbottom et al. 1988). The biomass of krill in 3.5 milion km2 of the Prydz Bay ...
Meeting Document : WG-KRILL-92/23 : Autor(es): I. Higginbottom and T. Pauly (Australia)
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By-catch of fish in the krill fishery
Abstract: Observations are reported of icefish being taken as bycatch during krill fishing ... operations from a research vessel. The results indicate that the bycatch of fish in the commercial krill ... open ocean krill fishing. Author(s): I. Everson (United Kingdom), A. Neyelov and Y. Permitin (USSR ... ) Title: By-catch of fish in the krill fishery Approval: Approved ...
Meeting Document : WG-KRILL-91/25 : Autor(es): I. Everson (United Kingdom), A. Neyelov and Y. Permitin (USSR)
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Midwater trawl catchability regarding quantitative estimation of krill biomass using the method of trawling surveys on abundance
distributional pattern end trawl parameters. Data on trawl catchability distribution parameters and krill ... taken as an example, proved the latters not to be suitable for krill biomass estimation using method of ... trawling survey on krill abundance should be worked out. Optimum construction of midwater trawl can be ... include studies on estimation of krill total exemption. Author(s): S.M. Kasatkina (USSR) Title: Midwater ...
Meeting Document : WG-KRILL-91/32 : Autor(es): S.M. Kasatkina (USSR)
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An evaluation of reduced target strength estimates reported for krill (Euphausia superba)
on the same experiment and report new calculations of the target strength of krill (Euphausia superba ... ) that propose questioning previous measurements of krill target strength and estimates of abundance ... important, given that they are being cited as a basis for increasing the estimates of krill standing stock ... dependent bias (correlation of target strength of an individual krill on the number of krill used to measure ...
Meeting Document : WG-KRILL-90/13 : Autor(es): M.C. Macaulay (USA)
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Possible approaches to the evaluation of the Antarctic krill mortality
the base of summaryed data on Krill age groups singled out using method of Harding.Parameters obtained ... were used to calculate total Krill mortality using different methods applyed earlier only to the fish ... most real values varied from 0.75 to 1,17. No fishery impact on various parameters of the krill ... approaches to the evaluation of the Antarctic krill mortality Approval: Approved ...
Meeting Document : WG-KRILL-92/08 : Autor(es): L.G. Maklygin and V.I. Latogursky (Russia)
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Some comments on the procedure for testing estimators of krill abundance which utilise survey data
Abstract: Since krill distributional data do show evidence of spatial correlation, estimators of ... performance in practice. Such studies require a simple method for computer generation of krill distribution ... " models of krill distribution are considered. These achieve overall spatial correlation by placing ... krill swarms at random within larger aggregation features termed concentrations; these concentrations ...
Meeting Document : WG-KRILL-91/21 : Autor(es): D.S. Butterworth, D.L. Borchers and D.G.M. Miller (South Africa)
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CPUEs and body length of Antarctic krill within commercial hauls of polish trawler FV Lepus in the fishing ground off South Orkneys in January and February 1991
Abstract: Length composition of krill in diurnal and night hauls of FV Lepus, off S. Orkneys in ... January and February 1991, generally show similar pattern. The proportion of bigger individuals of krill ... than those in January. No larval fish were recorded in krill catches. Only few specimens of Electrona ... . Zaporowski (Poland) Title: CPUEs and body length of Antarctic krill within commercial hauls of polish ...
Meeting Document : WG-KRILL-91/37 : Autor(es): I. Wójcik and R. Zaporowski (Poland)
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Estimating krill recruitment and its variabiliity
Abstract: A maximum likelihood method is developed for the decomposition of krill density at ... Southern Ocean give a mean recruitment rate for one year old krill of 0.339 with a standard deviation of ... 0.100. The corresponding results for two year old krill from 9 surveys are 0.552 and standard deviation ... (Australia) Title: Estimating krill recruitment and its variabiliity Approval: Approved ...
Meeting Document : WG-KRILL-93/12 : Autor(es): W. de la Mare (Australia)