Landscape patterns of avian habitat use and nest success are affected by chronic gas well compressor noise
Landscape patterns of avian habitat use and nest success are affected by chronic gas well compressor noise
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DOI：
10.1007/s10980-011-9609-z
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发表时间：
2011-11-01
影响因子：
5.2
通讯作者：
Cruz, Alexander
中科院分区：
文献类型：
--
作者：
Francis, Clinton D.;Paritsis, Juan;Cruz, Alexander
人为噪声正在成为世界各地声景观的主要组成部分，这些改变的声学条件可能对自然群落产生严重后果。我们模拟了16平方公里研究区域内气井压缩机的噪声振幅，以估计噪声对鸟类栖息地使用和筑巢成功率的影响。利用具有噪声响应的其他鸟类群落成员的代表性物种，我们估算了整个研究区域灰捕蝇鸟（Empidonax wrighi）和西部灌丛鸦（Aphelocoma californica）的占用率，以及灰捕蝇鸟的筑巢成功率，这高度依赖于西部灌丛鸦的捕食。我们亦会探讨不同的噪音管理及纾减方案如何减少受噪音影响的地区。压缩机噪音影响了我们研究区域的84.5%，每个物种的占用率比没有压缩机噪音的预期低约5%。相比之下，捕蝇鸟筑巢成功率高出7%，这反映了嘈杂地区的捕食率下降。并非所有替代管理和缓解方案都能减少受噪音影响的地区比例；然而，在压缩机周围使用音障墙可以将受噪音影响的面积减少70%，并将入住率和筑巢成功率保持在接近没有压缩机噪音的景观的水平。这些结果表明，来自压缩机的噪音是可以有效管理的，并且由于栖息地的利用和筑巢的成功只是许多可能随着噪音暴露而改变的生态过程中的两个，因此最大限度地减少声景观的人为成分应该是保护的优先事项。
Anthropogenic noise is becoming a dominant component of soundscapes across the world and these altered acoustic conditions may have severe consequences for natural communities. We modeled noise amplitudes from gas well compressors across a 16 km 2 study area to estimate the influence of noise on avian habitat use and nest success. Using species with noise responses representative of other avian community members, across the study area we estimated gray flycatcher (Empidonax wrightii) and western scrub-jay (Aphelocoma californica) occupancy, and gray flycatcher nest success, which is highly dependent on predation by western scrub-jays. We also explore how alternative noise management and mitigation scenarios may reduce area impacted by noise. Compressor noise affected 84.5% of our study area and occupancy of each species was approximately 5% lower than would be expected without compressor noise. In contrast, flycatcher nest success was 7% higher, reflecting a decreased rate of predation in noisy areas. Not all alternative management and mitigation scenarios reduced the proportion of area affected by noise; however, use of sound barrier walls around compressors could reduce the area affected by noise by 70% and maintain occupancy and nest success rates at levels close to those expected in a landscape without compressor noise. These results suggest that noise from compressors could be effectively managed and, because habitat use and nest success are only two of many ecological processes that may change with noise exposure, minimizing the anthropogenic component of soundscapes should be a conservation priority.