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Cumulative effects of exposure to continuous and intermittent sounds on temporary hearing threshold shifts induced in a harbor porpoise (Phocoena phocoena)
Kastelein, R.A.; Gransier, R.; Hoek, L. (2016). Cumulative effects of exposure to continuous and intermittent sounds on temporary hearing threshold shifts induced in a harbor porpoise (Phocoena phocoena), in: Popper, A.N. et al. (Ed.) The effects of noise on aquatic life II. Advances in Experimental Medicine and Biology, 875: pp. 523-528. hdl.handle.net/10.1007/978-1-4939-2981-8_63
In: Popper, A.N.; Hawkins, A. (Ed.) (2016). The effects of noise on aquatic life II. Advances in Experimental Medicine and Biology, 875. Springer Science+Business Media, Inc: New York. ISBN 978-1-4939-2980-1. xxx, 1292 pp., more
In: Advances in Experimental Medicine and Biology. Springer: Berlin. ISSN 0065-2598, more
Peer reviewed article  

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Keywords
    Pile driving; Seismic surveys; Odontocete Flower, 1865 [WoRMS]; Marine
Author keywords
    Anthropogenic sound; Recovery of hearing; Naval sonar

Authors  Top 
  • Kastelein, R.A.
  • Gransier, R.
  • Hoek, L.

Abstract
    The effects of exposure to continuous and intermittent anthropogenic sounds on temporary hearing threshold shifts (TTSs) in a harbor porpoise were investigated by testing hearing before and after exposure to 1- to 2-kHz downsweeps of 1 s, without harmonics, presented as paired-intermittent and continuous-exposure combinations with identical cumulative sound exposure levels (SELcum). Exposure to intermittent sounds resulted in lower TTSs than exposure to continuous sounds with the same SELcum. Therefore, the hearing of marine mammals is at less risk from intermittent anthropogenic noises than from continuous ones at the same received sound pressure level and duration.

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