Spatial structure and the control of invasive alien species
Spatial structure and the control of invasive alien species
复制标题
空间结构与外来入侵物种控制
DOI：
10.1017/s1367943004001507
复制
发表时间：
2004
影响因子：
3.4
通讯作者：
Kirsty J. Park
中科院分区：
文献类型：
--
作者：
J. Travis;Kirsty J. Park
外来入侵物种对世界各地的生物多样性构成重大威胁，目前正在执行许多根除方案，以努力减少它们可能对本地物种和生态系统造成的影响。这类入侵物种种群的空间结构可能对设计有效的控制策略具有重要影响。在这里，一个简单的源-汇种群模型被用来解决以下问题：如果一个外来入侵物种的种群本质上是源-汇的，那么分配有限的资源以控制它的最佳方式是什么？该模型的结果表明，仅将资源分配给来源人群并不总是导致最有效的控制策略。最有效的控制措施取决于源种群和汇种群的相对强度(净收益和净损失)，最重要的是，它们之间的扩散性质。我们提供了一个控制入侵物种的案例研究，说明了这些类型模型的使用。
Invasive alien species pose a significant threat to biodiversity worldwide and many eradication programmes are now underway in an effort to reduce the impact they may have on native species and ecosystems. The spatial structure of such invasive species populations is likely to have important implications for designing effective control strategies. Here, a simple source–sink population model is used to address the following question: if a population of an invasive alien species is source–sink in nature, what is the best way of dividing limited resources for its control? Results from this model indicate that allocation of resources solely to the source population does not always result in the most effective control strategy. The most efficient control measure is determined by the relative strengths (net gains and losses) of the source and sink populations and, crucially, the nature of dispersal between them. We present a case study for the control of an invasive species illustrating the use of these types of model.