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Northwest Herring Acoustic Survey Report 2004
O'Donnell, Ciaran Mullins, Eugene Egan, Afra Smith, Turloch Bunn, Robert Griffin, Karen O’Driscol, Patrick Bicknell, Simon O’Driscol, Deirdre Cross, Marcus
O'Donnell, Ciaran
Mullins, Eugene
Egan, Afra
Smith, Turloch
Bunn, Robert
Griffin, Karen
O’Driscol, Patrick
Bicknell, Simon
O’Driscol, Deirdre
Cross, Marcus
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Date
2004
Publisher
Marine Institute
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Abstract
The objectives of this survey were to: 1). To assess the size of the herring stock in VIaS and VIIb using an EK60 scientific sounder and a 38 kHz mounted within the vessels drop keel. Observe fish marks along the survey track using 18, 120 and 200 kHz; 2). Collect biological data from herring samples within this area and determine
composition of marks using a single pelagic mid-water trawl.
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O'Donnell, C., Mullins, E., Egan, A., Smith, T., Bunn, R., Griffin, K., O’Driscol, P., Bicknell, S., O’Driscol, D., Cross, M. & O’Brian, J. "Northwest Herring Acoustic Survey Report 2004", Marine Institute 2004