Protected natural areas are not free from noise, especially noise generated by traffic within park boundaries. Natural soundscapes are important for maintaining community structure, providing positive visitor experiences, and increasing visitor support for management actions that reduce impacts on natural resources. To test experimental quieting as a strategy to increase both wildlife habitat quality and visitor experience, we enforced decreased speed limits and presented educational signage to reduce sound levels along a road system in an alternating, on–off block design within Grand Teton National Park, Wyoming, USA. We continuously recorded background sound levels while conducting bird space use assessments and visitor-intercept surveys along the experimental corridor. Our mitigation approach lowered sound levels during sign-present weeks, yet there was no relationship between bird space use near roadways and traffic noise, perhaps due to the increased duration of noise exposure created by lower speed limits. There was, however, a relationship between visitor perception of birdsong diversity and background sound level. Critically, visitors preferred soundscape mitigation strategies limiting personal access in exchange for better experiences in natural soundscapes.

中文翻译：

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实验性地消除交通噪音是否有益于人和鸟类？

自然保护区并非没有噪音，尤其是公园边界内交通产生的噪音。自然音景对于维持社区结构、提供积极的游客体验以及增加游客对减少对自然资源影响的管理行动的支持非常重要。为了测试实验性安静作为一种提高野生动物栖息地质量和游客体验的策略，我们强制降低了速度限制并展示了教育标牌，以在怀俄明州大提顿国家公园内以交替的、开关的街区设计降低道路系统沿线的噪音水平， 美国。我们在沿着实验走廊进行鸟类空间使用评估和访客拦截调查的同时，不断记录背景声级。我们的缓解方法降低了迹象出现周期间的声级，然而，道路附近的鸟类空间使用与交通噪音之间没有关系，这可能是由于较低的速度限制造成的噪音暴露持续时间增加。然而，游客对鸟鸣多样性的感知与背景声级之间存在关系。至关重要的是，参观者更喜欢限制个人访问的音景缓解策略，以换取更好的自然音景体验。