On the possibility of estimating year-class strength by measuring echo-abundance of 0-group fish

• Main Authors: Dragesund, Olav, Olsen, Steinar
• Format: Report
• Language: English
• Published: [Fiskeridirektoratets havforskningsinstitutt] 1965
• Subjects: 0-gruppe; 0-group; Barents Sea; Bear Island; Norway; Northern Norway; Spitsbergen
• Online Access: http://hdl.handle.net/11250/114494

The possibility of estimating the distribution and abundance of 0-group fish by a combination of echo surveying and fishing experiments with pelagic trawl and purse seine is discussed. The existence of scattering layers, their origin, and the identification of sound scatterers are discussed with spe...