Simulated evolution assembles more realistic food webs with more functionally similar species than invasion
Simulated evolution assembles more realistic food webs with more functionally similar species than invasion
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DOI：
10.1038/s41598-019-54443-0
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发表时间：
2019-12-03
影响因子：
4.6
通讯作者：
Martinez, Neo D.
中科院分区：
文献类型：
--
作者：
Romanuk, Tamara N.;Binzer, Amrei;Martinez, Neo D.
虽然自然群落是通过生态和进化过程组装的，但生态组装过程的研究较多，很少与进化组装过程进行比较。我们通过比较通过模拟从区域物种库和物种形成事件引入物种而组装的群落食物网来解决这些差异。与引入被认为是更典型的入侵的营养上不同的物种相比，引入被认为是更典型的同域或共域物种形成事件的本地物种在营养上相似的物种，通过引入与本地物种具有更高的营养普遍性、脆弱性和持久相似性的更持久的物种，导致了更少的灭绝，并组装了更实际的网络。此类事件还增加了生态位重叠以及本地和引进物种的持久性。与许多竞争理论相反，这些发现表明，更紧密地包装生态位的进化过程和其他过程对生态系统结构和功能的贡献比以前想象的更大。
While natural communities are assembled by both ecological and evolutionary processes, ecological assembly processes have been studied much more and are rarely compared with evolutionary assembly processes. We address these disparities here by comparing community food webs assembled by simulating introductions of species from regional pools of species and from speciation events. Compared to introductions of trophically dissimilar species assumed to be more typical of invasions, introducing species trophically similar to native species assumed to be more typical of sympatric or parapatric speciation events caused fewer extinctions and assembled more empirically realistic networks by introducing more persistent species with higher trophic generality, vulnerability, and enduring similarity to native species. Such events also increased niche overlap and the persistence of both native and introduced species. Contrary to much competition theory, these findings suggest that evolutionary and other processes that more tightly pack ecological niches contribute more to ecosystem structure and function than previously thought.