Video S1 from High rates of vessel noise disrupt foraging in wild harbour porpoises ( Phocoena phocoena )

• Main Authors: Wisniewska, Danuta Maria, Johnson, Mark, Teilmann, Jonas, Siebert, Ursula, Galatius, Anders, Dietz, Rune, Madsen, Peter Teglberg
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: The Royal Society 2018
• Subjects: Environmental Science; Ecology; FOS Biological sciences; 60801 Animal Behaviour; Harbour porpoise; Phocoena phocoena
• Online Access: https://dx.doi.org/10.6084/m9.figshare.5840871; https://rs.figshare.com/articles/Video_S1_from_High_rates_of_vessel_noise_disrupt_foraging_in_wild_harbour_porpoises_i_Phocoena_phocoena_i_/5840871

Behavior of porpoise hp12_293a around the time of passage of a presumed fast ferry. UPPER PANEL: Spectrogram composed of power spectral densities (PSDs) in 1-Hz bands. The broadband vertical bands indicate noise when the porpoise surfaces. The narrow vertical lines at above 120 kHz are clicks produced by the tagged animal and its calf. LOWER PANEL: Approximate three-dimensional path of a harbour porpoise (individual hp12_293a, see figure 3) estimated by dead reckoning using pressure, accelerometer and magnetometer data recorded by the DTAG-3 tag. The track is colour-coded by root-mean-squared (RMS) minimum specific acceleration (MSA), a proxy for activity, in 0.5-s windows. The track has been displaced by 5 m relative to the water surface, to better show the movements of the porpoise during the vessel noise exposure.