A hybrid approach to acoustic classification and length estimation of krill

CCAMLR Science

Volumn 11, Issue , 2004, Pages 33-58

  Azzali, M ^a   Leonori, I ^a   Lanciani, G ^a  

^a CNR   (Italy)

Author keywords

Acoustic size estimation; Acoustic species classification; CCAMLR; Euphausiids

Indexed keywords

DECAPODA (CRUSTACEA); EUPHAUSIACEA;

EID: 9644260721     PISSN: 10234063     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (30)

1. Azzali, M. and J. Kalinowski. 2000. Spatial and temporal distribution of krill Euphausia superba biomass in the Ross Sea (1989/90 and 1994). Faranda, F.M., L. Guglielmo and A. Ionora (Eds). Ross Sea Ecology. Springer-Verlag, Berlin Heidelberg: 433-455.
2. Azzali, M., J. Kalinowski and G. Lanciani. 2000a. A multiple-frequency method for identifying and assessing the Antarctic krill stock in the Ross Sea (1989/90, 1997/98 and 1999/2000). Document WG-EMM-00/37. CCAMLR, Hobart, Australia.
3. Azzali, M., J. Kalinowski, G. Lanciani and I. Leonori. 2000b. Comparative studies on the biological and acoustical properties of krill aggregations (Euphausia superba, Dana) sampled during the XIII Italian Expedition to the Ross Sea (December 1997-January 1998). Document WG-EMM-00/39. CCAMLR, Hobart, Australia.
4. Bottino, N.R. 1974. The fatty acids of Antarctic phytoplankton and euphausiids. Fatty acid exchange among trophic levels of the Ross Sea. Mar. Biol., 27: 197-204.
5. Brierley, A.S. and J.L. Watkins. 1996. Acoustic targets at South Georgia and the South Orkney Islands during a season of krill scarcity. Mar. Ecol. Prog. Ser., 138 (1-3): 51-61.
6. Bucholz, F. 1982. Drach's molt staging system adapted for euphausiids. Mar. Biol., 66: 301-305.
7. Clay, C.S. and H. Medwin. 1977. Acoustical Oceanography: Principals and Applications. John Wiley and Sons, New York: 544 pp.
8. Demer, D.A. In press. An estimate of error for CCAMLR 2000 estimate of krill biomass. Deep-Sea Res., II, Special Issue on the CCAMLR 2000 Synoptic Survey.
9. Demer, D.A., M.A. Soule and R.P. Hewitt. 1999. A multiple-frequency method for potentially improving the accuracy and precision of in situ target strength measurements. J. Acoust. Soc. Am., 105 (4): 2359-2376.
10. Devijver, P.A. and J. Kittler. 1982. Pattern Recognition: a Statistical Approach. Prentice-Hall International, Inc., London: 448 pp.
11. Endo, Y. 1993. Orientation of Antarctic krill in an aquarium. Nippon Suisan Gakkaishi, 59: 465-468.
12. Foote, K.G., I. Everson, J.L. Watkins and D.G. Bone. 1990. Target strengths of Antarctic krill (Euphausia superba) at 38 and 120 kHz. J. Acoust. Soc. Am., 87 (1): 16-24.
13. Greenlaw, C.F. 1977. Backscattering spectra of preserved zooplankton. J. Acoust. Soc. Am., 62 (1): 44-52.
14. Greenlaw, C.F. 1979. Acoustical estimation of zooplankton populations. Limnol. Oceanogr., 24: 226-242.
15. Greenlaw, C.F. and R.K. Johnson. 1983. Multiple-frequency acoustical estimation. Biol. Oceanogr., 2: 227-252.
16. Hickling, R. 1964. Analysis of echoes from a hollow metallic sphere in water. J. Acoust. Soc. Am., 36: 1124-1137.
17. Johnson, R.K. 1977. Sound scattering from a fluid sphere revisited. J. Acoust. Soc. Am., 61 (2): 375-377.
18. Kalinowski, J. and M. Azzali. 1992. Possibility of discrimination of various groups of species using dual-frequency hydroacoustic system. In: Underwater Acoustics, Proceedings of the IXth Symposium on Hydroacoustics. Hydroacoustics Department of Naval Academy, Hydroacoustics Division of the Technical University of Gdansk, Gdynia (Poland): 219-229.
19. Kils, U. 1982. Swimming behavior, swimming performance and energy balance of Antarctic krill Euphausia superba. BIOMASS Sci. Ser., 3: 122 pp.
20. Kristensen, A. 1983. Acoustic classification of zooplankton. Thesis at Universitet I Trodheim - Norges Tekniske Hogskole. ELAB report STF44 A83187: 107 pp.
21. MacLennan, D.N. and E.J. Simmonds. 1992. Fisheries Acoustics. Chapman and Hall, London.
22. Madureira, L.S.P., I. Everson and E.J. Murphy. 1993. Interpretation of acoustic data at two frequencies to discriminate between Antarctic krill and other scatterers. J. Plankton. Res., 15 (7): 787-802.
23. Mitson, R.B., Y. Simarad and C. Goss. 1996. Use of a two-frequency algorithm to determine size and abundance of plankton in three widely spaced locations. ICES J. Mar. Sci., 53 (2): 209-215.
24. Miyashita, K., I. Aoki and T. Inagaki. 1996. Swimming behaviour and target strength of isada krill (Euphausia pacifica). ICES J. Mar. Sci., 53 (2): 303-308.
25. Morris, D.J., J.L. Watkins, C. Ricketts, F. Bucholz and J. Priddle. 1988. An assessment of the merits of length and weight measurements of Antarctic krill Euphausia superba. Brit. Ant. Surv. Bull., 79: 37-50.
26. Sala, A., M. Azzali and A. Russo. 2002. Krill of the Ross Sea: distribution, abundance and demography of Euphausia superba and Euphausia crystallorophias during the Italian Antarctic Expedition (January-February 2000). Sci. Mar., 66 (2): 123-133.
27. Siegel, V. 1992. Review of length-weight relationships for Antarctic krill. In: Selected Scientific Papers, 1992 (SC-CAMLR-SSP/9). CCAMLR, Hobart, Australia: 145-155.
28. Stanton, T.K., D. Chu and P.H. Wiebe. 1996. Acoustic scattering characteristics of several zooplankton groups. ICES J. Mar. Sci., 53 (2): 289-295.
29. Stanton, T.K. and D. Chu. 2000. Review and recommendations for the modelling of acoustic scattering by fluid-like elongated zooplankton: euphausiids and copepods. ICES J. Mar. Sci., 57 (4): 793-807.
30. Zhang, J. 1990. Numerical prediction for vibration and sound radiation from submerged revolutional shell excited by sound source. Proceedings of International Workshop on Marine Acoustics. Beijing, China: 369-372.