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Canopy and knowledge gaps when invasive alien insects remove foundation species

机译:入侵性外来昆虫清除基础物种时的冠层和知识鸿沟

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摘要

The armored scale Aulacaspis yasumatsui invaded the northern range of the cycad Cycas micronesica in 2003, and epidemic tree mortality ensued due to a lack of natural enemies of the insect. We quantified cycad demographic responses to the invasion, but the ecological responses to the selective removal of this foundation species have not been addressed. We use this case to highlight information gaps in our understanding of how alien invasive phytophagous insects force cascading adverse ecosystem changes. The mechanistic role of unique canopy gaps, oceanic island examples and threatened foundation species with distinctive traits are three issues that deserve research efforts in a quest to understand this facet of ecosystem change occurring across multiple settings globally.
机译:2003年,装甲鳞甲(Aulacaspis yasumatsui)入侵了苏铁微苏铁的北部范围,由于缺乏该昆虫的天敌,导致了流行性树木死亡。我们量化了苏铁对入侵的人口统计学响应,但尚未解决对选择性清除该基础物种的生态响应。在了解外来侵入性植物吞噬性昆虫如何迫使级联不利的生态系统变化的理解中,我们使用此案例来突出信息空白。独特的树冠间隙,海洋岛屿实例以及具有鲜明特征的受威胁基础物种的机械作用是三个问题,值得研究以寻求了解全球范围内多种环境下生态系统变化的这一方面。

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