Traffic noise reduces foraging efficiency in wild owls.
Traffic noise reduces foraging efficiency in wild owls.
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DOI：
10.1038/srep30602
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发表时间：
2016-08-18
影响因子：
4.6
通讯作者：
Nakamura F
中科院分区：
文献类型：
--
作者：
Senzaki M;Yamaura Y;Francis CD;Nakamura F
在全球范围内，人为噪声一直在增加。实验室实验表明，噪音会扰乱一系列物种的觅食行为，但为了揭示噪音的全部影响，我们必须研究噪音对野生物种觅食行为的影响。猫头鹰是分布广泛的夜间顶级捕食者，在狩猎时使用猎物的沙沙声来定位猎物。我们进行了野外实验，以考察交通噪声对猫头鹰识别猎物能力的影响。结果表明，由于声掩蔽和/或对交通噪声的分心和厌恶，觅食效率随着交通噪声水平的增加而下降。此外，我们估计，交通噪声对猫头鹰从道路上探测猎物的能力的影响达到120 m，这比圈养蝙蝠研究中估计的距离要大。我们的研究首次提供了噪音降低野生动物觅食效率的证据，并强调了噪音可能带来的普遍影响。
Anthropogenic noise has been increasing globally. Laboratory experiments suggest that noise disrupts foraging behavior across a range of species, but to reveal the full impacts of noise, we must examine the impacts of noise on foraging behavior among species in the wild. Owls are widespread nocturnal top predators and use prey rustling sounds for localizing prey when hunting. We conducted field experiments to examine the effect of traffic noise on owls’ ability to detect prey. Results suggest that foraging efficiency declines with increasing traffic noise levels due to acoustic masking and/or distraction and aversion to traffic noise. Moreover, we estimate that effects of traffic noise on owls’ ability to detect prey reach >120 m from a road, which is larger than the distance estimated from captive studies with bats. Our study provides the first evidence that noise reduces foraging efficiency in wild animals, and highlights the possible pervasive impacts of noise.