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Sound the Alarm: A Meta-Analysis on the Effect of Aquatic Noise on Fish Behavior and Physiology.

Sound the Alarm: A Meta-Analysis on the Effect of Aquatic Noise on Fish Behavior and Physiology.
Author Information (click to view)

Cox K, Brennan LP, Gerwing TG, Dudas SE, Juanes F,


Cox K, Brennan LP, Gerwing TG, Dudas SE, Juanes F, (click to view)

Cox K, Brennan LP, Gerwing TG, Dudas SE, Juanes F,

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Global change biology 2018 02 24() doi 10.1111/gcb.14106
Abstract

The aquatic environment is increasingly bombarded by a wide variety of noise pollutants, whose range and intensity are increasing with each passing decade. Yet little is known about how aquatic noise affects marine communities. To determine the implications that changes to the soundscape may have on fishes, a meta-analysis was conducted focusing on the ramifications of noise on fish behavior and physiology. Our meta-analysis identified 42 studies that produced 2,354 data points, which in turn indicated that anthropogenic noise negatively affects fish behavior and physiology. The most predominate responses occurred within foraging ability, predation risk, and reproductive success. Additionally, anthropogenic noise was shown to increase the hearing thresholds and cortisol levels of numerous species while tones, biological, and environmental noise were most likely to affect complex movements and swimming abilities. These findings suggest that the majority of fish species are sensitive to changes in the aquatic soundscape, and depending on the noise source, species responses may have extreme and negative fitness consequences. As such this global synthesis should serve as a warning of the potentially dire consequences facing marine ecosystems if alterations to aquatic soundscapes continue on their current trajectory. This article is protected by copyright. All rights reserved.

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