Abstract Ecological invasion is a common phenomenon and a critical driver of species’ coexistence in nature. We establish a pair approximation model to explore the possible invasive results of an exploitative competition food web formed by ecological invasion. Global and local hunting strategies of predators are considered. The influence of initial densities and the initial spatial structure of both native and invasive species for invasive results are analyzed. Generally, better local predation capacity and higher initial density of the invasive species favor successful invasion. Interestingly, the initial spatial structures of both native and invasive species can alter the invasive results. Whether higher aggregation of invasive species promotes invasion depends on the species’ predation strategies. Then two kinds of disturbance defined as destructive disturbance and targeted introductory disturbance are introduced. Three characteristics of disturbances are considered: the extent, spatial connectivity and periodicity. All the three characteristic have profound influence on the invasive results especially for the targeted introductory disturbance. Furthermore, the former kind of disturbance cannot eliminate the invasive species thoroughly while the latter not only can eliminate the invasive species but also can promote the coexistence of the native and invasive species depending on its three characteristics. Finally, several invasive events and hypotheses being reported are explained by our model. This study provides new insights into biodiversity conservation and invasion, and the results about disturbance can give us some inspirations on the control of invasion.

中文翻译：

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物种空间结构和干扰对生态入侵的影响

摘要 生态入侵是一种普遍现象，也是物种在自然界共存的关键驱动因素。我们建立了一个配对近似模型来探索由生态入侵形成的剥削性竞争食物网可能的入侵结果。考虑了捕食者的全球和局部狩猎策略。分析了本地和入侵物种的初始密度和初始空间结构对入侵结果的影响。一般来说，较好的局部捕食能力和较高的入侵物种初始密度有利于成功入侵。有趣的是，本地和入侵物种的初始空间结构可以改变入侵结果。入侵物种的高度聚集是否会促进入侵取决于物种的捕食策略。然后介绍了两种干扰定义为破坏性干扰和有针对性的引入性干扰。考虑了干扰的三个特征：范围、空间连通性和周期性。所有这三个特征都对侵入性结果有深远的影响，特别是对于靶向性引入障碍。此外，前一种干扰不能彻底消灭入侵物种，而后者不仅可以消灭入侵物种，而且可以根据其三个特点促进本地物种和入侵物种的共存。最后，我们的模型解释了报告的几个侵入性事件和假设。这项研究为生物多样性保护和入侵提供了新的见解，