dc.contributor.author | Ona, Egil | |
dc.date.accessioned | 2013-04-04T09:37:45Z | |
dc.date.available | 2013-04-04T09:37:45Z | |
dc.date.issued | 1988-04 | |
dc.identifier.uri | http://hdl.handle.net/11250/109280 | |
dc.description | ICES Working Group FAST (WGFAST): Fisheries Acoustics, Science and Technology Working Group (FAST.WG. Oostende, April 20-22, 1988. | no_NO |
dc.description.abstract | Observations made from a stationary echo sounder, passed by a trawling vessel, clearly demonstrate the flight reaction of cod
as a response to the noise from the vessel. Horizontal dispersal and downward swimming has been observed to starts as early as 200 m in front of the vessel propeller, and a descent speed of nearly 17 mjmin has been recorded. The avoidance reaction was seen at depths from 50 - 170 m depth, gradually diminising with increasing depth. Similar, but and weaker responses were also observed during general passages without trawl. | no_NO |
dc.language.iso | eng | no_NO |
dc.publisher | ICES | no_NO |
dc.subject | cod | no_NO |
dc.subject | torsk | no_NO |
dc.subject | acoustics | no_NO |
dc.subject | akustikk | no_NO |
dc.subject | trawling | no_NO |
dc.subject | tråling | no_NO |
dc.title | Observations of cod reaction to trawling noise | no_NO |
dc.type | Working paper | no_NO |
dc.subject.nsi | VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923 | no_NO |
dc.subject.nsi | VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fisheries technology: 924 | no_NO |
dc.source.pagenumber | 11 s. | no_NO |