General guidelines for invasive plant management based on comparative demography of invasive and native plant populations
General guidelines for invasive plant management based on comparative demography of invasive and native plant populations
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DOI：
10.1111/j.1365-2664.2008.01502.x
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发表时间：
2008-08-01
影响因子：
5.7
通讯作者：
Buckley, Yvonne M.
中科院分区：
文献类型：
--
作者：
Ramula, Satu;Knight, Tiffany M.;Buckley, Yvonne M.
1.目前缺乏入侵植物管理的一般准则。通过集中控制对人口增长率影响最大的人口过程（生存、生长、繁殖力），可以实现人口下降。然而，在入侵的早期阶段，我们通常很少有关于人口的人口统计信息，而这一阶段的控制可能是最有效的。在这里，我们确定是否综合现有的人口数据的入侵和本地植物种群可以解决这个知识问题。我们比较了21个入侵和179个本地植物物种的入侵和本地物种之间的人口动态使用已发表的矩阵人口模型。我们研究了种群增长率对生存、生长和繁殖力扰动的反应是否在入侵物种和本地物种之间存在差异，并确定了入侵物种的哪些人口统计过程是降低种群增长率的目标。入侵者有较高的人口增长率（λ）比本地人，导致在人口过程的差异。生长扰动和繁殖力转换（弹性）对入侵种群增长的影响更大，而生存扰动对本地种群增长的影响更大.对于入侵物种和本地物种，λ的生存弹性随着寿命的增加而增加，随着λ的减少;而生长和繁殖力的弹性随着寿命的减少而增加。对于长寿的入侵者，无论是生存，生长或繁殖力的过渡模拟减少一般不足以产生人口下降，而无论是生存+生长或生存+繁殖力的多重减少更有效。对于短寿命的入侵者，生长或繁殖力的模拟减少和所有成对的多重减少产生种群下降。合成与应用。入侵物种的生活史和种群增长率是防治目标选择的重要依据。对于快速增长的短寿命入侵者种群，生长和繁殖力的过渡应优先作为控制目标的生存过渡。对于长寿的入侵者，通常需要同时减少一个以上的人口过程，最好是生存和增长，以确保人口下降。这些一般准则可以应用于快速增长的新植物入侵，并在入侵前沿的入侵物种缺乏详细的人口统计数据。
1. General guidelines for invasive plant management are currently lacking. Population declines may be achieved by focusing control on demographic processes (survival, growth, fecundity) with the greatest impact on population growth rate. However, we often have little demographic information on populations in the early stages of an invasion when control can be most effective. Here we determine whether synthesis of existing demographic data on invasive and native plant populations can address this knowledge problem.2. We compared population dynamics between invasive and native species using published matrix population models for 21 invasive and 179 native plant species. We examined whether the population growth rate responsiveness to survival, growth and fecundity perturbations varied between invasive and native species, and determined which demographic processes of invaders to target for reductions in population growth rate.3. Invaders had higher population growth rates (lambda) than natives, resulting in differences in demographic processes. Perturbations of growth and fecundity transitions (elasticities) were more important for population growth of invaders, whereas perturbations of survival had greater importance for population growth of natives.4. For both invasive and native species, elasticities of lambda to survival increased with life span and decreased with lambda; while elasticities to growth and fecundity decreased with life span and increased with lambda.5. For long-lived invaders, simulated reductions in either survival, growth or fecundity transitions were generally insufficient to produce population declines, whereas multiple reductions in either survival + growth or survival + fecundity were more effective. For short-lived invaders, simulated reductions in growth or fecundity and all pairwise multiple reductions produced population declines.6. Synthesis and applications. Life history and population growth rate of invasive species are important in the selection of control targets. For rapidly growing populations of short-lived invaders, growth and fecundity transitions should be prioritized as control targets over survival transitions. For long-lived invaders, simultaneous reductions in more than one demographic process, preferably survival and growth, are usually required to ensure population decline. These general guidelines can be applied to rapidly growing new plant invasions and at the invasion front where detailed demographic data on invasive species are lacking.