Spread dynamics of invasive species
Spread dynamics of invasive species
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DOI：
10.1073/pnas.0504272102
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发表时间：
2006-01-10
影响因子：
11.1
通讯作者：
Marquet, PA
中科院分区：
文献类型：
--
作者：
Arim, M;Abades, SR;Marquet, PA
物种入侵是全球变化的主要组成部分，造成生物多样性的巨大损失以及经济损失。入侵理论试图理解和预测入侵的成功和传播模式。然而，有没有共识，哪些物种或社区属性增强入侵者的成功或解释传播动态。实验和理论研究表明，蔓延动态的监管是可能的，但是，其存在的条件尚未得到实证证明。如果入侵传播是一个受调控的过程，那么解释这种调控的结构将是入侵动态的主要决定因素。在这里，我们探讨存在的监管基础的变化率的新网站殖民化。我们采用的概念和分析工具，从研究的丰度动态和蔓延的动态，事实上，调节过程和调节结构是非常一致的入侵发生在广泛不同的背景下。我们的结论是基于对30种入侵物种的传播动态的分析，包括鸟类，两栖动物，鱼类，无脊椎动物，植物和病毒，所有这些都表现出类似的调节结构。与目前认为物种入侵是特殊现象的观点相反，在这里我们提供了证据，证明普遍模式确实存在。
Species invasions are a principal component of global change, causing large losses in biodiversity as well as economic damage. Invasion theory attempts to understand and predict invasion success and patterns of spread. However, there is no consensus regarding which species or community attributes enhance invader success or explain spread dynamics. Experimental and theoretical studies suggest that regulation of spread dynamics is possible; however, the conditions for its existence have not yet been empirically demonstrated. If invasion spread is a regulated process, the structure that accounts for this regulation will be a main determinant of invasion dynamics. Here we explore the existence of regulation underlying changes in the rate of new site colonization. We employ concepts and analytical tools from the study of abundance dynamics and show that spread dynamics are, in fact, regulated processes and that the regulation structure is notably consistent among invasions occurring in widely different contexts. We base our conclusions on the analysis of the spread dynamics of 30 species invasions, including birds, amphibians, fish, invertebrates, plants, and a virus, all of which exhibited similar regulation structures. In contrast to current beliefs that species invasions are idiosyncratic phenomena, here we provide evidence that general patterns do indeed exist.