Assessing the potential for indirect interactions between tropical tree species via shared insect seed predators

Assessing the potential for indirect interactions between tropical tree species via shared insect seed predators
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评估热带树种之间通过共享昆虫种子捕食者间接相互作用的潜力

DOI:
10.1111/btp.12759
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发表时间:
2020
期刊:
影响因子:
2.1
通讯作者:
Downey H
Downey H
中科院分区:
环境科学与生态学3区
文献类型:
--
作者:
Downey H

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植物天敌对植物种群动态和群落结构具有潜在的影响。在不同的热带森林中,对植物天敌影响的研究主要集中在高度专业化的天敌的多样性增强作用上,而具有更广泛饮食的天敌的社区水平影响很少被考虑。我们调查了巴罗科罗拉多岛(巴拿马)上与樟科七种树种相互作用的昆虫种子捕食者群落。我们提出了一个第一个定量的食物网前传播的昆虫种子捕食者和他们的寄主植物,并使用网络中的信息来评估潜在的树种之间的间接相互作用。我们的数据表明,有很高的潜力间接樟科物种之间的相互作用,通过其共享的种子捕食者。这些相互作用的强度和方向在很大程度上与物种之间的系统发育距离和性状相似性无关,但可能受每个树种产生的果实体积的影响。
Natural enemies of plants have the potential to influence the dynamics of plant populations and the structure of plant communities. In diverse tropical forests, research on the effects of plant enemies has largely focused on the diversity‐enhancing effects of highly specialized enemies, while the community‐level effects of enemies with broader diets have rarely been considered. We investigated the community of insect seed predators interacting with seven tree species in the family Lauraceae on Barro Colorado Island (Panama). We present one of the first quantitative food webs for pre‐dispersal insect seed predators and their host plants, and use the information in the web to assess the potential for indirect interactions between the tree species. Our data suggest that there is high potential for indirect interactions between Lauraceae species via their shared seed predators. The strength and direction of these interactions are largely unrelated to the phylogenetic distance and trait similarity between species but are likely governed by the volume of fruit produced by each tree species.Abstract in Spanish is available with online material.
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