Structural changes within trophic levels are constrained by within-family assembly rules at lower trophic levels.
Structural changes within trophic levels are constrained by within-family assembly rules at lower trophic levels.
复制标题
营养级内的结构变化受到较低营养级科内装配规则的限制。
DOI：
10.1111/ele.13091
复制
发表时间：
2018
期刊：
影响因子：
8.8
通讯作者：
Serguei Saavedra
中科院分区：
文献类型：
--
作者：
Chuliang Song;F. Altermatt;I. Pearse;Serguei Saavedra
历史偶然性广义上是指即使是随机的历史事件也可以约束生物体和整个群落的生态和进化路径的命题。关注群落，这些途径可以反映为营养水平内部和跨营养水平的特定结构变化-物种如何相互作用和相互影响-这对物种共存具有重要影响。通过对近2000年中欧植物引进及其新食草动物的记录，我们发现近缘植物物种的到来顺序限制了食草物种在整个观察期内形成的营养级结构变化。由于现场和实验室实验很难进行数百年的记录和重放一个群落的组装历史，我们的研究提供了一种替代方法来了解结构变化是如何在很长一段时间内发生的。
Historical contingency broadly refers to the proposition that even random historical events can constrain the ecological and evolutionary pathways of organisms and that of entire communities. Focusing on communities, these pathways can be reflected into specific structural changes within and across trophic levels - how species interact with and affect each other - which has important consequences for species coexistence. Using the registry of the last 2000 years of plant introductions and their novel herbivores encountered in Central Europe, we find that the order of arrival of closely related (but not of distantly related) plant species constrained the structural changes within the trophic level formed by herbivore species across the observation period. Because it is difficult for field and lab experiments to be conducted over hundreds of years to record and replay the assembly history of a community, our study provides an alternative to understand how structural changes have occurred across extensive periods of time.