线性基础设施推动了热带干森林鸟类物种的生物同质化
Dishane K Hewavithana1, Devaka K Weerakoon2, Mayuri R Wijesinghe2
1Abess Center for Ecosystem Science and Policy, University of Miami, Coral Gables, Florida, United States of America.
PloS one
|April 16, 2025
概括
道路和电力线等线性基础设施破坏了热带鸟类群落. 这些发展有利于广泛分布的物种,而不是独特的特有鸟类,导致生物同质化.
科学领域:
- 生态生态学 生态生态学
- 保护生物学 保护生物学
- 环境科学 环境科学
背景情况:
- 线性基础设施 (LIs) 正在全球范围内扩展,特别是在热带地区.
- 目前对LI影响的研究是有限的,专注于温带道路和单一物种.
- 热带干旱森林是重要的生物多样性热点,面临着越来越多的LI开发.
研究的目的:
- 调查三种LI类型 (道路,铁路,电力线) 对热带干森林鸟群的影响.
- 评估鸟类的丰富性,丰富性和组成如何随着不同LI的接近而变化.
- 了解植被结构在调解LI对鸟类影响中的作用.
主要方法:
- 在80个分层地块附近进行了点数调查,这些地块位于各种LI组合附近.
- 在每个地块上测量了五个植被结构变量.
- 分析了鸟类社区指标 (丰富性,丰富性,组成) 与LI距离,控制植被.
主要成果:
- 物种丰富性和丰富性从森林边缘到森林内部大幅下降.
- 社区的组成因接近所有三种LI类型而改变.
- 动态LI (道路,铁路) 与静态LI (电力线) 相比,具有不同的影响.
- 斯里兰卡的特有物种受到负面影响,而世界性物种受益于LI的接近.
结论:
- 线性基础设施对热带鸟类群落产生重大影响,改变了物种丰富性,丰富性和组成.
- 动态和静态LI对鸟类群体施加不同的压力.
- 通过偏好广泛分布的物种而不是特有物种,LIs促进生物同质化,威胁到独特的生物多样性.
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