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首页> 外文期刊>Ecology and Evolution >Predation of potential insect pests in oil palm plantations, rubber tree plantations, and fruit orchards
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Predation of potential insect pests in oil palm plantations, rubber tree plantations, and fruit orchards

机译:油棕榈种植园,橡胶树种植园和果园潜在虫害的捕食

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In human‐modified landscapes, important ecological functions such as predation are negatively affected by anthropogenic activities, including the use of pesticides and habitat degradation. Predation of insect pests is an indicator of healthy ecosystem functioning, which provides important ecosystem services, especially for agricultural systems. In this study, we compare predation attempts from arthropods, mammals, and birds on artificial caterpillars in the understory, between three tropical agricultural land‐use types: oil palm plantations, rubber tree plantations, and fruit orchards. We collected a range of local and landscape‐scale data including undergrowth vegetation structure; elevation; proximity to forest; and canopy cover in order to understand how environmental variables can affect predation. In all three land‐use types, our results showed that arthropods and mammals were important predators of artificial caterpillars and there was little predation by birds. We did not find any effect of the environmental variables on predation. There was an interactive effect between land‐use type and predator type. Predation by mammals was considerably higher in fruit orchards and rubber tree than in oil palm plantations, likely due to their ability to support higher abundances of insectivorous mammals. In order to maintain or enhance natural pest control in these common tropical agricultural land‐use types, management practices that benefit insectivorous animals should be introduced, such as the reduction of pesticides, improvement of understory vegetation, and local and landscape heterogeneity.
机译:在人类改性的景观中,诸如捕食的重要生态功能受到人类活动的负面影响,包括使用杀虫剂和栖息地降解。昆虫害虫的捕食是健康生态系统功能的指标,提供重要的生态系统服务,特别是用于农业系统。在这项研究中,我们将遗址尝试从节肢动物,哺乳动物和鸟类上的遗址进行比较,在林下的三种热带农业土地使用类型:油棕种植园,橡胶树种植园和果园。我们收集了一系列本地和景观级别数据,包括植被结构。海拔;近森林;和Canopy封面,以了解环境变量如何影响捕食。在所有三种土地使用类型中,我们的结果表明,节肢动物和哺乳动物是人造毛虫的重要捕食者,鸟类少量捕食。我们没有发现环境变量对捕食的任何影响。土地使用类型和捕食者类型之间存在互动效果。哺乳动物的果树源和橡胶树的捕食比在油棕种植园中的可能性相当高,可能是由于它们支持较高丰富的食虫哺乳动物的能力。为了维持或增强这些普通的热带农业土地使用类型中的自然害虫控制,应引入益处食虫动物的管理实践,例如农药的减少,改善林下植被,以及局部和景观异质性。

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