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在现代森林中捕获的景观水平的变化和昆虫食草动物的爆发,为解释化石记录提供了一个框架
Lauren Azevedo-Schmidt1,2, Anshuman Swain3, Lauren G Shoemaker4
1Climate Change Institute, University of Maine, Orono, 04469, USA. lauren.e.schmidt@maine.edu.
Scientific reports
|June 15, 2023
概括
在现代森林中复制古植物学方法揭示了植物昆虫相互作用的空间变异性. 这项研究为了解过去和现在的昆虫草食和疫情提供了一个框架.
科学领域:
- 生态生态学 生态生态学
- 古生物学的古生物学
- 进化生物学 进化生物学
背景情况:
- 植物-昆虫相互作用的空间变异性对于社区结构至关重要,但很难在化石记录中评估.
- 古植物学方法在捕捉草食动物的空间动态方面存在局限性.
- 了解这些动态是解释过去生态系统的关键.
研究的目的:
- 用复制的古植物学方法在现代森林中测试森林内部和森林内部的植物昆虫变异性.
- 将现代植物昆虫相互作用与化石数据进行比较.
- 在现代和化石背景下开发一个分析昆虫草食和疫情的框架.
主要方法:
- 在三个不同的现代森林生态系统中复制古植物技术.
- 应用随机混合效应模型和非度数多维缩放 (NMDS) 排序.
- 利用双边网络和节点级度量来分析植物-昆虫的食关系.
主要成果:
- 森林之间总损害频率或多样性没有显著差异,但功能养群 (FFG) 的变化.
- 与湿热带森林相比,温带森林的普遍草食性高于湿热带森林.
- 双部分网络成功地发现了一种昆虫爆发 (Lymantria dispar),以前无法在化石数据中识别.
结论:
- 森林内部分析证实了持续的损害类型社区,支持古植物学假设.
- 该研究建立了古植物学和现代植物昆虫群落之间的比较框架.
- 提出了一种新的分析框架,用于识别现代和化石昆虫养疫情.
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