为了探究城市化噪音对高频鸟类鸣声的影响,以棕脸鹟莺(Abroscopus a lb ogularis)为研究对象,对比分析城市区域和自然环境区域棕脸鹟莺鸣声特征的差异,结果发现,城市种群的单次鸣唱时长显著高于自然环境种群,最高频率和频率带宽也明显增...为了探究城市化噪音对高频鸟类鸣声的影响,以棕脸鹟莺(Abroscopus a lb ogularis)为研究对象,对比分析城市区域和自然环境区域棕脸鹟莺鸣声特征的差异,结果发现,城市种群的单次鸣唱时长显著高于自然环境种群,最高频率和频率带宽也明显增大,但每分钟鸣唱次数、最低频率和主峰频率均没有显著差异,表明棕脸鹟莺应对城市噪音的主要方式是延长鸣唱时长、提高最高频率和频率带宽.展开更多
Ultrasonic communication in vertebrates is attracting increasing research interest.To determine if ultrasonic vocalization is common in birds,we recorded their vocalizations with ultrasound detectors in the Dongzhai N...Ultrasonic communication in vertebrates is attracting increasing research interest.To determine if ultrasonic vocalization is common in birds,we recorded their vocalizations with ultrasound detectors in the Dongzhai National Nature Reserve of Henan Province,China.We found varying degrees of high frequency components in the vocalizations of 14 species and in several of these species,the frequency of harmonics was up to the range of ultrasound.We suggest that more studies are required to determine whether the high frequency components in avian vocalizations have functions and what these functions are.In addition,the ability of birds to hear sounds in the high frequency range also requires re-examination.展开更多
文摘为了探究城市化噪音对高频鸟类鸣声的影响,以棕脸鹟莺(Abroscopus a lb ogularis)为研究对象,对比分析城市区域和自然环境区域棕脸鹟莺鸣声特征的差异,结果发现,城市种群的单次鸣唱时长显著高于自然环境种群,最高频率和频率带宽也明显增大,但每分钟鸣唱次数、最低频率和主峰频率均没有显著差异,表明棕脸鹟莺应对城市噪音的主要方式是延长鸣唱时长、提高最高频率和频率带宽.
基金supported by the National Basic Research Program of China(No.2007CB411606)
文摘Ultrasonic communication in vertebrates is attracting increasing research interest.To determine if ultrasonic vocalization is common in birds,we recorded their vocalizations with ultrasound detectors in the Dongzhai National Nature Reserve of Henan Province,China.We found varying degrees of high frequency components in the vocalizations of 14 species and in several of these species,the frequency of harmonics was up to the range of ultrasound.We suggest that more studies are required to determine whether the high frequency components in avian vocalizations have functions and what these functions are.In addition,the ability of birds to hear sounds in the high frequency range also requires re-examination.
