Quality assurance of hydroacoustic surveys: the repeatability of fish-abundance and biomass estimates in lakes within and between hydroacoustic systems

By Wanzenbock J.   Mehner T.   Schulz M.   Gassner H.   Winfield I.J.  

ICES Journal of Marine Science, Vol. 60, Iss. 3, 2003-06 ,pp. : 486-492

Elsevier

Access to resources Recommend Favorite

Improved mapping of schooling fish near the surface: comparison of abundance estimates obtained by sonar and echo integration

By Misund O.A.   Aglen A.   Hamre J.   Ona E.   Rottingen I.   Skagen D.   Valdemarsen J.W.  

ICES Journal of Marine Science, Vol. 53, Iss. 2, 1996-02 ,pp. : 383-388

Academic Press

Access to resources Recommend Favorite

An operational system for processing and visualizing multi-frequency acoustic data

By Korneliussen R.J.   Ona E.  

ICES Journal of Marine Science, Vol. 59, Iss. 2, 2002-04 ,pp. : 293-313

Academic Press

Access to resources Recommend Favorite

Analysis of vessel influence on spatial behaviour of fish schools using a multi-beam sonar and consequences for biomass estimates by echo-sounder

By Soria M.   Freon P.   Gerlotto F.  

ICES Journal of Marine Science, Vol. 53, Iss. 2, 1996-02 ,pp. : 453-458

Academic Press

Access to resources Recommend Favorite

Can an optical plankton counter produce reasonable estimates of zooplankton abundance and biovolume in water with high detritus?

By Zhang X.   Roman M.   Sanford A.   Adolf H.   Lascara C.  

Journal of Plankton Research, Vol. 22, Iss. 1, 2000-01 ,pp. : 137-150

Oxford University Press

Access to resources Recommend Favorite