人为引发的变化对动态景观连接是好的还是坏的?
Elie Morin1, Ny Tolotra Razafimbelo2, Jean-Louis Yengué3
1Université de Poitiers, Laboratoire Ecologie et Biologie des Interactions (UMR CNRS 7267), 3 Rue Jacques Fort, 86000, Poitiers, France.
Journal of environmental management
|January 7, 2024
概括
在不断变化的景观中,生态网络对于保护生物多样性至关重要. 这项研究表明,城市景观连接在24年内增加了两种鸟类的种类,不同影响了它们的种群.
科学领域:
- 生态生态学 生态生态学
- 保护生物学 保护生物学
- 城市生态城市生态学
背景情况:
- 土地管理者面临着平衡景观变化与生物多样性保护的挑战.
- 包含息地 (节点) 和走廊 (链接) 的生态网络对于维持功能连接至关重要.
- 了解动态景观连接对于评估生物多样性状况至关重要,特别是在城市环境中.
研究的目的:
- 调查城市景观连接的微小变化对两个有着不同的生态的鸟类物种息地可用性的影响:Anthus trivialis和Certhia brachydactyla.
- 在24年的时间里,分析人口趋势与动态景观连接的关系.
- 为协调人类活动和生物多样性保护提供土地管理策略的信息.
主要方法:
- 利用土地覆盖地图来评估精细规模的动态景观连接.
- 采用统计方法将物种发生与景观阻力值相关联,推断息地使用和走廊依赖.
- 分析了24年研究期间两种特定鸟类的景观连接的变化.
主要成果:
- 在24年的研究期间,Anthus trivialis和Certhia brachydactyla的景观连接性都增加了.
- 塞尔提亚甲虫的出现与更高的抗性值相关,最大限度地利用走廊,而Anthus trivialis的出现则有利于中间的抗性值.
- 这些发现表明,物种在利用城市息地的能力上存在差异,并突出了景观变化对当地丰富性的不同影响.
结论:
- 动态,精细的景观连接性研究对于有效的土地管理和生物多样性保护至关重要.
- 增加的城市连接可能解释了Certhia brachydactyla的国家人口增加,但没有减少Anthus trivialis.
- 保护工作应考虑农村和城市息地,重点关注城市地区的依赖走廊的物种.
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