夏威夷新型种子分散互惠网络的结构,空间动态和稳定性
Jeferson Vizentin-Bugoni1,2, Corey E Tarwater3, Jeffrey T Foster4
1U.S. Army Corps of Engineers-Engineer Research Development Center, 2902 Newmark Dr., Champaign, IL 61826, USA. jbugoni@yahoo.com.br.
Science (New York, N.Y.)
|April 6, 2019
概括
引入的物种很快就会形成复杂的种子传播网络, 这种整合挑战了本地生态系统的恢复工作.
科学领域:
- 生态学
- 保护生物学
- 网络分析
背景情况:
- 人类活动导致前所未有的物种入侵和灭绝,
- 了解新型互动对社区结构和稳定的影响对于保护至关重要.
研究的目的:
- 分析引入物种形成的种子散布网络的结构和稳定性.
- 调查新的相互作用是否导致与本地主导系统相比较的复杂网络结构.
主要方法:
- 在夏威夷的奥阿胡岛种子散布网络的多层面分析.
- 网络属性的描述,包括专业化和模块化.
- 将新型网络结构与全球原住民占主导地位的社区进行比较.
主要成果:
- 新的种子散布网络主要由引入的物种组成,并且具有专门的模块化结构.
- 尽管互动差异很大,但这些新型网络与本地人主导的社区具有结构和稳定性相似之处.
- 引入的物种很容易融入现有的生态网络.
结论:
- 复杂的网络结构可以在没有共同的进化历史的情况下出现,这表明了保留的相互作用模式.
- 引入的物种可以迅速形成稳定,复杂的生态网络.
- 侵入性物种融入新型网络使本地生态系统的恢复复杂化.
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