Lightning Damage Facilitates Beetle Colonization of Tropical Trees
Lightning Damage Facilitates Beetle Colonization of Tropical Trees
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DOI：
10.1093/aesa/saaa015
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发表时间：
2020-11-01
影响因子：
2.3
通讯作者：
Yanoviak, Stephen P.
中科院分区：
文献类型：
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作者：
Parlato, Brady P.;Gora, Evan M.;Yanoviak, Stephen P.
闪电是许多森林生态系统中常见的干扰因素。被雷击损坏的树木是甲虫潜在的重要资源，但这种联系的大多数证据仅限于温带松林。在此，我们评估了雷电损害与热带树木甲虫定植的关系。我们记录了巴拿马10个雷击点（173棵被雷击的树）和10个匹配对照点（137棵对照树）树干上的甲虫洞数量。被雷击过的树木树干上的甲虫洞比对照树多370%。在未受雷击破坏的树木和受雷击破坏的树木中，甲虫洞的丰度随树冠总枯梢的增加而增加，且雷击树木的树径越大。在被雷击损坏的树木的树干部分，甲虫洞也更丰富，位于树冠损坏部分的正下方。本研究结果表明，雷击破坏促进了甲虫在热带森林树木上的定植，为研究雷击干扰对甲虫种群动态和群落结构的影响提供了依据。
Lightning is a common agent of disturbance in many forest ecosystems. Lightning-damaged trees are a potentially important resource for beetles, but most evidence for this association is limited to temperate pine forests. Here, we evaluated the relationship between lightning damage and beetle colonization of tropical trees. We recorded the number of beetle holes on the trunks of trees from 10 strike sites (n = 173 lightning-damaged trees) and 10 matching control sites (n = 137 control trees) in Panama. The trunks of lightning-struck trees had 370% more beetle holes than control trees. The abundance of beetle holes increased with increasing total crown dieback among both control and lightning-damaged trees, and with larger tree diameter among lightning-struck trees. Beetle holes also were more abundant in trunk sections of lightning-damaged trees located directly below a damaged section of the crown. The results of this study suggest that lightning damage facilitates beetle colonization in tropical forest trees and provide a basis for investigations of the effects of lightning-caused disturbance on beetle population dynamics and assemblage structure.