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dc.contributor.authorAntunes, Ricardo
dc.contributor.authorKvadsheim, Petter Helgevold
dc.contributor.authorLam, Frans-Peter A.
dc.contributor.authorTyack, Peter L.
dc.contributor.authorThomas, Len
dc.contributor.authorWensveen, Paul J.
dc.contributor.authorMiller, Patrick James O'Malley
dc.date.accessioned2017-10-17T12:27:31Z
dc.date.accessioned2017-10-18T07:07:22Z
dc.date.available2017-10-17T12:27:31Z
dc.date.available2017-10-18T07:07:22Z
dc.date.issued2014
dc.identifier.citationAntunes R, Kvadsheim PH, Lam FA, Tyack PL, Thomas L, Wensveen, Miller. High thresholds for avoidance of sonar by free-ranging long-finned pilot whales (Globicephala melas). Marine Pollution Bulletin. 2014;83(1):165-180en_GB
dc.identifier.urihttp://hdl.handle.net/20.500.12242/693
dc.identifier.urihttps://ffi-publikasjoner.archive.knowledgearc.net/handle/20.500.12242/693
dc.descriptionAntunes, Ricardo; Kvadsheim, Petter Helgevold; Lam, Frans-Peter A.; Tyack, Peter L.; Thomas, Len; Wensveen, Paul J.; Miller, Patrick James O'Malley. High thresholds for avoidance of sonar by free-ranging long-finned pilot whales (Globicephala melas). Marine Pollution Bulletin 2014 ;Volum 83.(1) s. 165-180en_GB
dc.description.abstractThe potential effects of exposing marine mammals to military sonar is a current concern. Dose–response relationships are useful for predicting potential environmental impacts of specific operations. To reveal behavioral response thresholds of exposure to sonar, we conducted 18 exposure/control approaches to 6 long-finned pilot whales. Source level and proximity of sonar transmitting one of two frequency bands (1–2 kHz and 6–7 kHz) were increased during exposure sessions. The 2-dimensional movement tracks were analyzed using a changepoint method to identify the avoidance response thresholds which were used to estimate dose–response relationships. No support for an effect of sonar frequency or previous exposures on the probability of response was found. Estimated response thresholds at which 50% of population show avoidance (SPLmax = 170 dB re 1 μPa, SELcum = 173 dB re 1 μPa2 s) were higher than previously found for other cetaceans. The US Navy currently uses a generic dose–response relationship to predict the responses of cetaceans to naval active sonar, which has been found to underestimate behavioural impacts on killer whales and beaked whales. The navy curve appears to match more closely our results with long-finned pilot whales, though it might underestimate the probability of avoidance for pilot-whales at long distances from sonar sources.en_GB
dc.language.isoenen_GB
dc.titleHigh thresholds for avoidance of sonar by free-ranging long-finned pilot whales (Globicephala melas)en_GB
dc.typeArticleen_GB
dc.date.updated2017-10-17T12:27:31Z
dc.identifier.cristinID1184641
dc.identifier.cristinID1184641
dc.identifier.doi10.1016/j.marpolbul.2014.03.056
dc.relation.projectIDForsvarets forskningsinstitutt: 1199
dc.source.issn0025-326X
dc.source.issn1879-3363
dc.type.documentJournal article
dc.relation.journalMarine Pollution Bulletin


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