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dc.contributor.authorPirotta, Enrico  Concept link
dc.contributor.authorMilor, Rachael  Concept link
dc.contributor.authorQuick, Nicola  Concept link
dc.contributor.authorMoretti, David J.  Concept link
dc.contributor.authorDiMarzio, Nancy A.  Concept link
dc.contributor.authorTyack, Peter L.  Concept link
dc.contributor.authorBoyd, Ian L.  Concept link
dc.contributor.authorHastie, Gordon  Concept link
dc.date.accessioned2012-09-28T19:57:49Z
dc.date.available2012-09-28T19:57:49Z
dc.date.issued2012-08-03
dc.identifier.citationPLoS ONE 7 (2012): e42535en_US
dc.identifier.urihttps://hdl.handle.net/1912/5402
dc.description© The Author(s), 2012. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in PLoS ONE 7 (2012): e42535, doi:10.1371/journal.pone.0042535.en_US
dc.description.abstractSome beaked whale species are susceptible to the detrimental effects of anthropogenic noise. Most studies have concentrated on the effects of military sonar, but other forms of acoustic disturbance (e.g. shipping noise) may disrupt behavior. An experiment involving the exposure of target whale groups to intense vessel-generated noise tested how these exposures influenced the foraging behavior of Blainville’s beaked whales (Mesoplodon densirostris) in the Tongue of the Ocean (Bahamas). A military array of bottom-mounted hydrophones was used to measure the response based upon changes in the spatial and temporal pattern of vocalizations. The archived acoustic data were used to compute metrics of the echolocation-based foraging behavior for 16 targeted groups, 10 groups further away on the range, and 26 nonexposed groups. The duration of foraging bouts was not significantly affected by the exposure. Changes in the hydrophone over which the group was most frequently detected occurred as the animals moved around within a foraging bout, and their number was significantly less the closer the whales were to the sound source. Non-exposed groups also had significantly more changes in the primary hydrophone than exposed groups irrespective of distance. Our results suggested that broadband ship noise caused a significant change in beaked whale behavior up to at least 5.2 kilometers away from the vessel. The observed change could potentially correspond to a restriction in the movement of groups, a period of more directional travel, a reduction in the number of individuals clicking within the group, or a response to changes in prey movement.en_US
dc.description.sponsorshipThe research reported here was financially supported by the United States (U.S.) Office of Naval Research (www.onr.navy.mil) grants N00014-07-10988, N00014-07-11023, N00014-08-10990; the U.S. Strategic Environmental Research and Development Program (www.serdp.org) grant SI-1539, the Environmental Readiness Division of the U.S. Navy (http://www.navy.mil/local/n45/), the U.S. Chief of Naval Operations Submarine Warfare Division (Undersea Surveillance), the U.S. National Oceanic and Atmospheric Administration (National Marine Fisheries Service, Office of Science and Technology) (http://www.st.nmfs.noaa.gov/), U.S. National Oceanic and Atmospheric Administration Ocean Acoustics Program (http://www.nmfs.noaa.gov/pr/acoustics/), and the Joint Industry Program on Sound and Marine Life of the International Association of Oil and Gas Producers (www.soundandmarinelife.org).en_US
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen_US
dc.publisherPublic Library of Scienceen_US
dc.relation.urihttps://doi.org/10.1371/journal.pone.0042535
dc.rightsAttribution 3.0 Unported*
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/*
dc.titleVessel noise affects beaked whale behavior : results of a dedicated acoustic response studyen_US
dc.typeArticleen_US
dc.identifier.doi10.1371/journal.pone.0042535


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