Whole community invasions and the integration of novel ecosystems.
Whole community invasions and the integration of novel ecosystems.
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DOI：
10.1371/journal.pcbi.1010151
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发表时间：
2022-06
影响因子：
4.3
通讯作者：
中科院分区：
文献类型：
--
作者：
单一非本地物种的入侵对生态群落的功能和结构的影响可能是显著的，当多个物种作为一个群体入侵时，这种影响可能会变得更加剧烈和难以预测。本文修改了植物-传粉者群落组合的动态布尔模型，以考虑随机选择或构成稳定群落的多种入侵物种对本地群落的入侵。我们发现，与随机入侵相比，整个群落入侵导致最终稳定的群落（物种更替的初始过程已经让位于群落中静态或接近静态的物种集合），包括本地和非本地物种，这些物种更大，更有可能保留本地物种，并且对巢性和连通性的拓扑测量变化较小。我们考虑了最终稳定群落中本地物种和入侵物种之间互惠相互作用的普遍性之间的关系，并证明互惠相互作用可以作为对本地群落重大破坏的缓冲。生态群落中物种间的相互作用会因新物种的引入而受到显著干扰。物种引入的影响很难预测，因此难以管理或防止不良后果（例如作物授粉减少）。在本报告中，我们模拟了一组植物和传粉者物种的群落入侵，这些物种要么代表一个稳定的群落，要么不代表一个稳定的群落，以预测对本地群落相互作用的影响。我们发现结果的重要差异包括，例如，合并两个稳定的群落比引入相同数量的随机入侵物种对本地群落的危害要小。
The impact of invasion by a single non-native species on the function and structure of ecological communities can be significant, and the effects can become more drastic–and harder to predict–when multiple species invade as a group. Here we modify a dynamic Boolean model of plant-pollinator community assembly to consider the invasion of native communities by multiple invasive species that are selected either randomly or such that the invaders constitute a stable community. We show that, compared to random invasion, whole community invasion leads to final stable communities (where the initial process of species turnover has given way to a static or near-static set of species in the community) including both native and non-native species that are larger, more likely to retain native species, and which experience smaller changes to the topological measures of nestedness and connectance. We consider the relationship between the prevalence of mutualistic interactions among native and invasive species in the final stable communities and demonstrate that mutualistic interactions may act as a buffer against significant disruptions to the native community. The interactions between species in an ecological community can be significantly perturbed by the introduction of new (i.e., invasive) species. The impact of species introductions can be very challenging to predict, making it difficult to manage or prevent undesirable consequences (e.g., decreased crop pollination). In this report we simulate community invasion by sets of plant and pollinator species that either do or do not represent a stable community to generate predictions about the impacts on interactions in a native community. We find important differences in outcomes including, for instance, that merging two stable communities is less detrimental to the native community than the introduction of an equal number of random invasive species.
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影响因子：
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作者：
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