Journal ArticleDOI
Responses of cetaceans to anthropogenic noise
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TLDR
In this paper, a review of the effects of anthropogenic noise on cetaceans has been published and their ability to document response(s), or the lack thereof, has improved.Abstract:
1
Since the last thorough review of the effects of anthropogenic noise on cetaceans in 1995, a substantial number of research reports has been published and our ability to document response(s), or the lack thereof, has improved. While rigorous measurement of responses remains important, there is an increased need to interpret observed actions in the context of population-level consequences and acceptable exposure levels. There has been little change in the sources of noise, with the notable addition of noise from wind farms and novel acoustic deterrent and harassment devices (ADDs/AHDs). Overall, the noise sources of primary concern are ships, seismic exploration, sonars of all types and some AHDs.
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Responses to noise fall into three main categories: behavioural, acoustic and physiological. We reviewed reports of the first two exhaustively, reviewing all peer-reviewed literature since 1995 with exceptions only for emerging subjects. Furthermore, we fully review only those studies for which received sound characteristics (amplitude and frequency) are reported, because interpreting what elicits responses or lack of responses is impossible without this exposure information. Behavioural responses include changes in surfacing, diving and heading patterns. Acoustic responses include changes in type or timing of vocalizations relative to the noise source. For physiological responses we address the issues of auditory threshold shifts and ‘stress’, albeit in a more limited capacity; a thorough review of physiological consequences is beyond the scope of this paper.
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Overall, we found significant progress in the documentation of responses of cetaceans to various noise sources. However, we are concerned about the lack of investigation into the potential effects of prevalent noise sources such as commercial sonars, depth finders and fisheries acoustics gear. Furthermore, we were surprised at the number of experiments that failed to report any information about the sound exposure experienced by their experimental subjects. Conducting experiments with cetaceans is challenging and opportunities are limited, so use of the latter should be maximized and include rigorous measurements and or modelling of exposure.read more
Citations
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Journal ArticleDOI
Discrete-space continuous-time models of marine mammal exposure to Navy sonar.
Charlotte M. Jones-Todd,Enrico Pirotta,Enrico Pirotta,Enrico Pirotta,John W. Durban,Diane Claridge,Robin W. Baird,Erin A. Falcone,Gregory S. Schorr,Stephanie L. Watwood,Len Thomas +10 more
TL;DR: In this article, the authors developed widely-applicable models of the population consequences of disturbance in the Pacific Ocean using N00014-16-1-2858 (PCoD+) grant, which was supported by the U.S. Navy.
Book ChapterDOI
Noise and marine life: progress from Nyborg to Cork in science and technology to inform decision making.
TL;DR: The subsequent period leading to this follow-on meeting in Cork, Ireland, in August 2010 saw remarkable advances in understanding the effects of human noise on aquatic life and how data is used to predict and minimize the environmental impacts.
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Study on Acoustic Radiation Calculation and Far Field Criterion of Oil pan
TL;DR: In this article, the authors used three numerical calculation methods (Finite element-boundary element hybrid, finite element-infinite element hybrid method, and finite element automatic matching layer technology) to calculate radiated sound power level of the oil pan.
Journal ArticleDOI
Beluga (Delphinapterus leucas) response to personal watercraft and motorized whale watching vessels in the Churchill River estuary
TL;DR: In this paper , an oblique time-lapse camera system with a 5-minute photo interval was set up overlooking a section of the Churchill River estuary that is shared by belugas and tourist vessels.
"la contaminación acústica submarina: especial referencia al impacto sobre los cetáceos producido por los sónares de los buques de guerra"
TL;DR: In this paper, the authors address the issue of protection that various national and international standards accorded to marine animals from the noise pollution of anthropogenic origin, and analyze the legal regime protector of cetaceans to noise produced by the sonar warships.
References
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Book
Marine mammals and noise
TL;DR: This paper presents a meta-anatomy of Marine Mammal Hearing, a probabilistic assessment of the response of marine mammals to man-made noise, and its consequences.
Journal ArticleDOI
A digital acoustic recording tag for measuring the response of wild marine mammals to sound
Mark Johnson,Peter L. Tyack +1 more
TL;DR: In this paper, a novel archival tag, called the DTAG, has been developed to monitor the behavior of marine mammals, and their response to sound, continuously throughout the dive cycle.
Journal ArticleDOI
Decline in Relative Abundance of Bottlenose Dolphins Exposed to Long-Term Disturbance
Lars Bejder,Amy Samuels,Hal Whitehead,Nick Gales,Janet Mann,Richard C. Connor,Michael R. Heithaus,Jana J. Watson-Capps,Cindy Flaherty,Michael Krützen +9 more
TL;DR: The substantial effect of tour vessels on dolphin abundance in a region of low-level tourism calls into question the presumption that dolphin-watching tourism is benign.
Journal ArticleDOI
Gas-bubble lesions in stranded cetaceans
Paul Jepson,Manuel Arbelo,Rob Deaville,I. A. P. Patterson,Pedro Castro,J.R. Baker,E. Degollada,H. M. Ross,Pedro Herráez,A. M. Pocknell,Francisco Rodríguez,F. E. Howie,A. Espinosa,R. J. Reid,José Raduan Jaber,Vidal Martín,Andrew A. Cunningham,Antonio Fernández +17 more
TL;DR: Evidence of acute and chronic tissue damage in stranded cetaceans that results from the formation in vivo of gas bubbles is presented, challenging the view that these mammals do not suffer decompression sickness.