首页|Can urban forests provide acoustic refuges for birds?Investigating the influence of vegetation structure and anthropogenic noise on bird sound diversity

Can urban forests provide acoustic refuges for birds?Investigating the influence of vegetation structure and anthropogenic noise on bird sound diversity

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As a crucial component of terrestrial ecosystems,urban forests play a pivotal role in protecting urban biodi-versity by providing suitable habitats for acoustic spaces.Previous studies note that vegetation structure is a key factor influencing bird sounds in urban forests;hence,adjusting the frequency composition may be a strategy for birds to avoid anthropogenic noise to mask their songs.However,it is unknown whether the response mechanisms of bird vocaliza-tions to vegetation structure remain consistent despite being impacted by anthropogenic noise.It was hypothesized that anthropogenic noise in urban forests occupies the low-fre-quency space of bird songs,leading to a possible reshaping of the acoustic niches of forests,and the vegetation struc-ture of urban forests is the critical factor that shapes the acoustic space for bird vocalization.Passive acoustic moni-toring in various urban forests was used to monitor natu-ral and anthropogenic noises,and sounds were classified into three acoustic scenes(bird sounds,human sounds,and bird-human sounds)to determine interconnections between bird sounds,anthropogenic noise,and vegetation structure.Anthropogenic noise altered the acoustic niche of urban for-ests by intruding into the low-frequency space used by birds,and vegetation structures related to volume(trunk volume and branch volume)and density(number of branches and leaf area index)significantly impact the diversity of bird sounds.Our findings indicate that the response to low and high frequency signals to vegetation structure is distinct.By clarifying this relationship,our results contribute to under-standing of how vegetation structure influences bird sounds in urban forests impacted by anthropogenic noise.

Anthropogenic noiseBird soundsUrban forestsVegetation structure

Zezhou Hao、Chengyun Zhang、Le Li、Bing Sun、Shuixing Luo、Juyang Liao、Qingfei Wang、Ruichen Wu、Xinhui Xu、Christopher A.Lepczyk、Nancai Pei、Tao Xu

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Research Institute of Tropical Forestry,Chinese Academy of Forestry,Guangzhou 510520,People's Republic of China

School of Electronics and Communication Engineering,Guangzhou University,Guangzhou 510006,People's Republic of China

Hunan Botanical Barden,Changsha 410116,People's Republic of China

Guangdong Eco-Engineering Polytechnic,Guangzhou 510520,People's Republic of China

College of Forestry,Wildlife and Environment,Auburn University,Auburn,AL 36849,USA

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National Natural Science Foundation of ChinaScience Technology Program from the Forestry Administration of Guangdong ProvinceGuangzhou Municipal Science and Technology Bureau ProgramShenzhen Key Laboratory of Southern Subtropical Plant Diversity

322013382021KJCX0172023A04J0086

2024

10.1007/s11676-023-01689-0

林业研究(英文版)
东北林业大学,中国生态学学会

林业研究(英文版)

CSTPCDEI
影响因子：0.365
ISSN：1007-662X
年,卷(期)：2024.35(2)
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