Invasiveness in plant communities with feedbacks
Invasiveness in plant communities with feedbacks
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DOI：
10.1111/j.1461-0248.2007.01017.x
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发表时间：
2007-04-01
期刊：
影响因子：
8.8
通讯作者：
Molofsky, Jane
中科院分区：
文献类型：
--
作者：
Eppstein, Margaret J.;Molofsky, Jane
入侵植物物种对生态系统的有害影响是有据可查的。虽然许多研究都集中在发现与入侵相关的生态影响，但这些影响是如何相互作用的仍不清楚，导致一些引入的外来物种成为入侵威胁。在这里，我们发展了一个框架，综合了传播压力、频率无关增长率、反馈关系、资源竞争和相互作用的空间尺度的影响。我们的结果表明，这些生态影响以复杂的方式相互作用，导致预期结果，从无法建立、归化、取决于繁殖的数量和空间分布的有条件入侵，到无条件接管。我们提出了一种方法来预测最近引入给定目标群落的物种出现这四种可能结果的可能性。这些信息可以使保护生物学家更有效地制定战略和针对性的补救工作，以帮助维持生态社区的生物多样性。
The detrimental effects of invasive plant species on ecosystems are well documented. While much research has focused on discovering ecological influences associated with invasiveness, it remains unclear how these influences interact, causing some introduced exotic species to become invasive threats. Here we develop a framework that incorporates the influences of propagule pressure, frequency independent growth rates, feedback relationships, resource competition and spatial scale of interactions. Our results show that these ecological influences interact in complex ways, resulting in expected outcomes ranging from inability to establish, to naturalization, to conditional invasion dependent on quantity and spatial distribution of propagules, to unconditional takeover. We propose a way to predict the likelihood of these four possible outcomes, for a species recently introduced into a given target community. Such information could enable conservation biologists to craft strategies and target remediation efforts more efficiently and effectively in order to help maintain biodiversity in ecological communities.