Résultats de la recherche

1. Note on estimating krill abundance from acoustic data on individual aggregations

   Paper Title:  Note on estimating krill abundance from acoustic data on individual aggregations ... , requires less data analysis and does not require any assumptions concerning aggregation distribution or ... Abstract / Description:  The fundamental equations and assumptions underlying estimation of krill abundance ... superior for the estimation of regional krill abundance and its variance since it is easier to apply ... abundance which utilise survey data. Document WG-KRIU-91/21. CCAMLR, Hobart, Australia: 24 pp. FOOTE, K.G ... from acoustic line-transect measurement of density. Document WG-KRILL-91/8. CCAMLR, Hobart, Australia ... visible swarms of Antarctic krill. Fish. Bull. S. Afr. 15: 99-108. HAMPTON, I. 1985. Abundance ... ACOUSTIC DATA ON INDIVIDUAL AGGREGATIONS I. Hampton and D.G.M. Miller* Abstract The fundamental ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 219–223 : Auteur(s): Hampton, I. and D.G.M. Miller

2. A post-processing method to remove interference noise from acoustic data collected from Antarctic krill fishing vessels

   Antarctic krill (Euphausia superba), yet the quality and even the utility of the data may be seriously ... Paper Title:  A post-processing method to remove interference noise from acoustic data collected ... data has been recognised as an important way to estimate the distribution and relative abundance of ... relevant virtual variable operators in the existing acoustic data post-processing software. The utility of ... acoustic data on the distribution and abundance of Antarctic krill and other pelagic species. Fish. Res ... . Can. J. Fish. Aquat. Sci., 68: 1231–1242. ICES. 2007. Collection of acoustic data from fish- ing ... data collected from Antarctic krill fishing vessels X. Wang Ocean University of China Qingdao ... data at 38, 70 and 120 kHz collected from a Chinese krill fishing vessel. Results show that the ...

   Science Journal Paper : CCAMLR Science, Volume 23 (CCAMLR Science, Volume 23) : 17–30 : Auteur(s): Wang, X., J. Zhang and X. Zhao

3. Catch per unit effort (CPUE) data from the early years of commercail krill fishing operations in the Atlantic sector of the Antarctic

   Paper Title:  Catch per unit effort (CPUE) data from the early years of commercail krill fishing ... operations in the Atlantic sector of the Antarctic Abstract / Description:  Catch per unit effort (CPUE) data ... are presented from krill fishing operations in CCAMLR Subareas 48.1, 48.2, 48.3 (South Atlantic) for ... discussed as an indicator of krill abundance/biomass and caution is expressed in this regard. Depending on ... -by-haul data; (b) from a scientific (RMT) net sampling survey. Krill CPUE from Early Fisheries in ... EFFORT (CPUE) DATA FROM THE EARLY YEARS OF COMMERCIAL KRILL FISHING OPERATIONS IN THE ATLANTIC SECTOR ... Catch per unit effort (CPUE) data are presented from krill fishing operations in CCAMLR Subareas 48.1 ... -frequency data are used to s tudy differences or similarities between areas and years. Krill CPUE ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 31–50 : Auteur(s): Siegel, V., V. Sushin and U. Damm

4. Analysis and modelling of the Soviet Southern Ocean krill fleet, II: Estimating the number of concentrations and analytical justification for search data

   number of concentrations and analytical justification for search data Abstract / Description:  In this ... paper, I show how data that are routinely collected by survey vessels can be used to estimate the number ... . Sample computations are performed, using data collected by Soviet research/survey vessels in the early ... Paper Title:  Analysis and modelling of the Soviet Southern Ocean krill fleet, II: Estimating the ... fisheries data. At the meeting of the Scientific Committee for the Conservation of Antarctic Marine ... data sets. In these plots, hauls were separated into those less than 1 000 kg of krill and those ... will provide two kinds of data. First, from the navigational log, one can determine whether krill are ... Institute for Marine Fisheries and Oceanography for use of the research vessel data. I thank Susan Mangel ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 283–322 : Auteur(s): Mangel, M.

5. Some comments on the procedure for testing estimators of krill abundance which utilise survey data

   utilise survey data Abstract / Description:  Since krill distributional data do show evidence of spatial ... techniques) may provide improved abundance estimates from survey data. However, computer simulation studies ... Paper Title:  Some comments on the procedure for testing estimators of krill abundance which ... computer generation of krill distribution patterns, which are compatible with existing information on the ... TESTING ESTIMATORS OF KRILL ABUNDANCE WHICH UTILISE SURVEY DATA D.S. Butterworth*, D.L. Borchers* and ... D.G.M. Miller** * ** Abstract Since krill distributional data do show evidence of spatial ... the data. If krill swarms are in fact located at random within the stratum concerned, such an ... Mangel (1989) in their studies of the potential utility of krill fishery CPUE data to index abundance ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 191–205 : Auteur(s): Butterworth, D.S., D.L. Borchers and D.G.M. Miller

6. Krill biomass in Area 48 and Area 58: recalculations of FIBEX data

   Paper Title:  Krill biomass in Area 48 and Area 58: recalculations of FIBEX data Abstract ... / Description:  FIBEX acoustic and length frequency data held in the BIOMASS database were used to provide ... analysing acoustic survey data. In order to refine the krill biomass and subsequent yield estimates used ... Islands. Document WG-Krill-91/22. CCAMLR, Hobart, Australia. JOLLY, G.M. and 1. HAMPTON. 1990. A ... data. Arch. FischWiss., 34: 121-144. MARIN, V.H., A. MUJICA and P. EBERHARD. 1991. Chilean krill ... fishery: analysis of the 1991 season. Document WG-Krill-91/39. CCAMLR, Hobart, Australia. 166 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 157–181 : Auteur(s): Trathan, P.N., D.J. Agnew, D.G.M. Miller, J.L. Watkins, I. Everson, M.R. Thorley, E. Murphy, A.W.A. Murray and C. Goss

7. Acoustic data analysis and models of krill spatial distribution

   Paper Title:  Acoustic data analysis and models of krill spatial distribution Abstract ... resolution of our data analyzed, and the real spatial distribution of krill should be the manifestation of ... / Description:  Acoustic data obtained on 4-5 January 1987 aboard the R/V Professor Siedlecki were used in three ... two distributions may correspond to the between and within patch biomass. These results of data ... OF KRILL SPATIAL DISTRIBUTION A. Morin, A. Okubo and K. Kawasaki Abstract Acoustic data ... resolution of our data analyzed, and the real spatial distribution of krill should be the manifestation of ... well as fish. Krill distribution is highly variable in space and time (Marr 1962), and krill often ... 4) indicates that the variability in krill biomass between pairs of data points is only a weak ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 311–329 : Auteur(s): Morin, A., A. Okubo and K. Kawasaki

8. Analyses of acoustic line-transect data from the waters around South Georgia: estimation of krill (Euphausia superba Dana) – biomass

   Paper Title:  Analyses of acoustic line-transect data from the waters around South Georgia ... 1981. The data have been analysed using various definitions of strata. The total biomass in the area of ... : estimation of krill (Euphausia superba Dana) – biomass Abstract / Description:  A large-scale acoustic survey ... estimating fish abundance over an area from acoustic line-transect measurements of density. Document WG ... WG-KRILL-91/30 ANALYSES OF ACOUSTIC LINE-TRANSECT DATA ... ). Document WG-Krill-90/J9. CCAMLR, Hobart, Australia. MILLER, D.G.M. and 1. HAMPTON. 1989. Biology and ... the waters around South Georgia was carried out during November and December 1981. The data have ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 225–243 : Auteur(s): Murphy, E., I. Everson and A. Murray

9. Advances are urgently needed in providing regular estimates of krill stock status based on the available data

   in providing regular estimates of krill stock status based on the available data Approval:  Approved ... the available data. Here, we briefly review some of the progress that CCAMLR working groups and the ... Secretariat Workflow Status:  Content Approved Document Release Consent:  No Delegation responsibility for ... fisheries”. Although WG-EMM is now a quarter century old, it rarely assesses the status of the krill stock ...

   Meeting Document : WG-EMM-2019/28 : Auteur(s): S. Hill, J. Hinke, N. Ratcliffe, P. Trathan and G. Watters

10. Characteristics of seasonal variation in diurnal vertical migration and aggregation of Antarctic krill (Euphausia superba) in the Scotia Sea, using Japanese fishery data

    of Antarctic krill (Euphausia superba) in the Scotia Sea, using Japanese fishery data Abstract ... Georgia (SG) areas) using Japanese fishery data. Average trawling depth usually showed a marked diurnal ... / Description:  Seasonal variation in the diurnal vertical migration and aggregation of Antarctic krill ... migration and aggregation of krill are closely related to its feeding and spawning ecology and avoidance of ... AGGREGATION OF ANTARCTIC KRILL (EUPHAUSIA SUPERBA) IN THE SCOTIA SEA, USING JAPANESE FISHERY DATA K. Taki ... were examined using Japanese fi shery data. Materials and methods The krill catch datasets (total of ... data. Average trawling depth usually showed a marked diurnal change during summer and winter in SS ... . Resumen Se estudió la variación estacional de la migración vertical diurna y la concentración del kril ...

    Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 163–172 : Auteur(s): Taki, K., T. Hayashi and M. Naganobu

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