Multiple-Frequency Acoustic Backscattering and Zooplankton Aggregations in the Inner Scotian Shelf Basins

• Published in: Canadian Journal of Fisheries and Aquatic Sciences
• Main Authors: Cochrane, N. A., Sameoto, D., Herman, A. W., Neilson, J.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Canadian Science Publishing 1991
• Subjects: Aquatic Science; Ecology, Evolution, Behavior and Systematics; Hake; Meganyctiphanes norvegica
• Online Access: http://dx.doi.org/10.1139/f91-046; http://www.nrcresearchpress.com/doi/pdf/10.1139/f91-046

Acoustic backscatter observations at 12, 50, and 200 kHz in the inner Scotian Shelf basins reveal large populations of silver hake (Merluccius bilinearis) and its principal prey, the euphausiid Meganyctiphanes norvegica. Multichannel sonar colour imagery facilitates separation of fish from euphausii...