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高度严重的夏季野火对美国新墨西哥州针叶树林 (Lepidoptera) 社区的短期影响
Eileen M Brantley1,2, Arden G Jones1,2, Alicia M Hodson1,3
1Valles Caldera National Preserve, National Park Service, Jemez Springs, NM 87025, USA.
Environmental entomology
|July 15, 2023
概括
北美地区野火的影响正在增加. 火灾后,社区的多样性和丰富性减少,与关键幼虫宿主植物的丧失有关,表明生态系统的转变.
科学领域:
- 生态生态学 生态生态学
- 昆虫学 昆虫学是一门学科.
- 保护生物学 保护生物学
背景情况:
- 由于气候变化和土地管理,北美森林火灾正在加剧.
- 高严重的火灾极大地改变了森林生态系统,通过改变息地资源影响了昆虫群落.
- 巨型蝶是森林健康和息地变化的敏感指标.
研究的目的:
- 评估2011年拉斯康查斯大火对新墨西哥州森林息的虫群落的影响.
- 为了比较被烧毁与未被烧毁的混合针叶树和沉思松树松林中的社区结构.
- 确定种群变化与火灾后幼虫宿主植物的可用性之间的关系.
主要方法:
- 2012年,在燃烧和未燃烧的森林种群 (混合针叶树,松树) 中进行了实地调查.
- 在三个月 (六月,七月,八月) 的时间里,黑光陷被部署起来,以收集类.
- 收集的标本被确定为物种,并分析了社区指标 (丰富,丰富,多样性,均性).
主要成果:
- 总共从211种蝶中收集了9,478个个体,其中Noctuidae和Geometridae是最丰富的家族.
- 与未被烧毁的森林相比,被烧毁的森林表现出明显较低的蝶数量,物种丰富性和多样性.
- 种群的减少与特定的幼虫宿主植物,特别是针叶树,树和树的丧失密切相关.
结论:
- 高严重的森林火灾显著减少了蝶的多样性和丰富性.
- 幼虫宿主植物的可用性是决定火灾后社区恢复的关键因素.
- 未来森林火灾后的继承可能会导致从树木养转向草养物种,从而改变生态系统的组成.
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