种子散布网络的城市化
Sara Beatriz Mendes1, Jens Mogens Olesen2, Manuel Nogales3
1Centre for Functional Ecology, Associate Laboratory TERRA, Department of Life Sciences, University of Coimbra, Coimbra, Portugal.
概括
城市化简化了种子散布网络,有利于非本土植物,并可能阻碍本土植物的传播. 可持续的城市规划对于保持生态系统的持久性和种子分散服务至关重要.
科学领域:
- 生态生态学 生态生态学
- 城市生态城市生态学
- 保护生物学 保护生物学
背景情况:
- 城市扩张改变了野生动物社区,并在全球范围内创造了新的生态系统.
- 种子分散对于生态系统的持续性至关重要,特别是在分散的景观中.
- 城市化对种子分散的影响的普遍化是具有挑战性的,因为对城市矩阵的研究有限.
研究的目的:
- 研究城市化对种子散布网络的影响.
- 为了比较自然森林中的种子散布网络与特内里夫岛的城市地区.
- 评估城市化如何影响与种子分散相关的植物动物相互作用.
主要方法:
- 在森林和城市地区进行了长达一年的果观测,并分析了动物便中的种子.
- 通过截面调查评估了肉类水果和食水动物的丰富性.
- 量化了植物与水果的相互作用,为两种息地建立了种子分散网络.
主要成果:
- 与森林相比,城市地区的肉类果实植物和果类植物的物种丰富程度为一半,简化了网络.
- 新型的相互作用主导着城市网络,非本地植物占相互作用的61%, (相对于森林中的15%).
- 一些普遍的水果食者促进了连接,而另一些人则避免了城市地区,创造了分散障碍.
结论:
- 城市化显著改变了种子散布网络,增加了对非本土植物的依赖.
- 促进本地植物,增强息地连接,防止非本地引入对于城市生物多样性至关重要.
- 可持续的城市规划和利益相关者的参与对于在不断变化的景观中保护种子散布服务至关重要.
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