生态特征促进了外来植物沿地中海山路传播
Lucia Antonietta Santoianni1, Michele Innangi1, Marco Varricchione1,2
1EnviXLab, Department of Biosciences and Territory, University of Molise, Termoli and Pesche, Italy.
Biological invasions
|September 26, 2024
概括
道路增加了地中海山区的入侵性外来植物物种,通过促进分散和干扰. 适应温暖和光线的本地植物群落,以及适度的牧场,影响外来物种的存在和覆盖.
科学领域:
- 生态生态学 生态生态学
- 侵入性物种 生物学 生物学
- 保护科学 保护科学
背景情况:
- 由于独特的生态特征,山区生态系统传统上抵抗入侵的外来物种.
- 线性基础设施,特别是道路,可以通过作为分散走廊来破坏这种阻力.
- 地中海盆地是一个生物多样性热点,易受入侵物种传播的影响.
研究的目的:
- 调查生态特征和道路干扰对意大利中部阿宁地区外来植物物种发生率和覆盖面的影响.
- 了解本土植物群落如何影响山区道路沿线入侵物种的建立和传播.
- 在全球变化下为地中海山区的入侵物种管理提供生态基础.
主要方法:
- 使用MIREN道路调查方法在三个山脉横断处进行.
- 在距离公路相邻和相距的土地上进行植被采样,每隔100米的高度间隔.
- 采用机器学习模型,使用本地植物社区的生态和干扰指标值的社区加权方法.
主要成果:
- 外来物种的发生率在有重大土壤干扰的道路附近和适应温暖,光明条件的土著社区中更高.
- 外来物种覆盖更强烈地与适度的牧场压力和友植物群落的存在有关.
- 道路作为外来植物分散的管道,改变了本土社区的动态.
结论:
- 道路极大地促进了外来植物物种在地中海山区生态系统中的传播和定居.
- 原生植物社区的特点在决定外来物种成功方面发挥着至关重要的作用.
- 研究结果为有针对性的管理策略提供了见解,以减轻脆弱的山区入侵物种威胁.
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