取决于环境的干扰协同作用:在野火之后,亚皮层的竞争对手可能会限制树皮甲虫的爆发
Katherine A Mitchell1, Lori D Daniels1, Allan L Carroll1
1Department of Forest and Conservation Sciences, Faculty of Forestry, University of British Columbia, Forest Sciences Centre, Vancouver, British Columbia, Canada.
概括
野火可以伤害道格拉斯树,创造资源脉冲,可能有利于道格拉斯虫的爆发. 然而,来自木甲虫的竞争可能会抑制这些爆发,影响火灾后森林的弹性.
科学领域:
- 森林生态 森林生态
- 昆虫生态学 昆虫生态学
- 干扰生态学 干扰生态学
背景情况:
- 野火和树皮甲虫是森林动态的关键驱动因素.
- 北美西部的大型野火可能会增加昆虫种群,原因是大量受伤的树木.
- Douglas-fir 虫 (Dendroctonus pseudotsugae) 种群可以在火灾发生后入,被危害的 Douglas-fir (Pseudotsuga menziesii) 主体所吸引.
研究的目的:
- 在野火发生后,研究道格拉斯火虫和木甲虫之间的相互作用.
- 评估木虫殖民是否可以抑制火灾后的道格拉斯虫种群增长.
主要方法:
- 在不列颠哥伦比亚省成熟的道格拉斯火林中研究了三个野火综合体 (2017年).
- 在受火伤的树木中评估了道格拉斯火虫和木虫的殖民模式.
- 对道格拉斯虫的定量化潜在种群增长率,在木虫的存在和缺席的情况下.
主要成果:
- Douglas-fir 虫首选殖民大直径的树木,火灾伤害中等.
- 这些树木经常被木虫共同殖民.
- 在没有木虫的情况下,道格拉斯虫种群显示出突破的潜力,但当木虫丰富 (>50%的树木) 时,增长率低于替代.
结论:
- 采木甲虫的竞争可以抑制道格拉斯火虫在受火灾伤害的森林中入.
- 干扰剂之间的相互作用是复杂的,并且取决于环境.
- 森林管理促进多样化,非破坏性的木甲虫群落可能会减轻野火后树皮甲虫的爆发.
关键词:
它们是Buprestidae.在Cerambycidae的家庭中.杜格拉斯甲甲虫的存在斯科利蒂娜 (Scolytinae) 是一个小鸟类.树皮甲虫 树皮甲虫 树皮甲虫干扰是一种干扰.干扰的协同作用是干扰的协同作用.跨特定的竞争 跨特定的竞争人口突破 人口突破野火 野火是一场野火.更多相关视频
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