title: Quantitative Measures of Anthropogenic Noise on Harbor Porpoises: Testing the Reliability of Acoustic Tag Recordings.
abstract: In recent years, several sound and movement recording tags have been developed to sample the acoustic field experienced by cetaceans and their reactions to it. However, little is known about how tag placement and an animal's orientation in the sound field affect the reliability of on-animal recordings as proxies for actual exposure. Here, we quantify sound exposure levels recorded with a DTAG-3 tag on a captive harbor porpoise exposed to vessel noise in a controlled acoustic environment. Results show that flow noise is limiting onboard noise recordings, whereas no evidence of body shading has been found for frequencies of 2-20 kHz.
authors.affiliation: Department of Bioscience, Aarhus University, Frederiksborgvej 399, 4000, Roskilde, Denmark. danuta.wisniewska@biology.au.dk.
authors.forename: Danuta M
authors.initials: DM
authors.lastname: Wisniewska
authors.affiliation: Department of Bioscience, Aarhus University, Frederiksborgvej 399, 4000, Roskilde, Denmark. jte@dmu.dk.
authors.forename: Jonas
authors.initials: J
authors.lastname: Teilmann
authors.affiliation: Department of Bioscience, Aarhus University, 8000, Aarhus C, Denmark. line.hermannsen@gmail.com.
authors.forename: Line
authors.initials: L
authors.lastname: Hermannsen
authors.affiliation: Sea Mammal Research Unit (SMRU), Scottish Oceans Institute, University of St. Andrews, St. Andrews, Fife, KY16 8LB, UK. mj26@st-andrews.ac.uk.
authors.forename: Mark
authors.initials: M
authors.lastname: Johnson
authors.affiliation: Department of Biology, University of Southern Denmark, 5230, Odense M, Denmark. lee@biology.sdu.dk.
authors.forename: Lee A
authors.initials: LA
authors.lastname: Miller
authors.affiliation: Institute for Terrestrial and Aquatic Wildlife Research (ITAW), University of Veterinary Medicine Hannover, Foundation, 30173, Hannover, Germany. Ursula.Siebert@tiho-hannover.de.
authors.forename: Ursula
authors.initials: U
authors.lastname: Siebert
authors.affiliation: Department of Bioscience, Aarhus University, 8000, Aarhus C, Denmark. peter.madsen@biology.au.dk.
authors.forename: Peter Teglberg
authors.initials: PT
authors.lastname: Madsen
mesh_terms: D000162:Acoustics; D000818:Animals; D003718:Denmark; D006802:Human Activities; D006801:Humans; D009622:Noise; D050741:Phocoena / Q000502:physiology*; D015203:Reproducibility of Results
keywords: Calibration; DTAG-3; Flow noise; Vessel