Does dead wood volume affect saproxylic beetles in montane beech-fir forests of Central Europe?
Does dead wood volume affect saproxylic beetles in montane beech-fir forests of Central Europe?
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DOI：
10.1007/s10841-019-00130-4
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发表时间：
2019-01
影响因子：
1.9
通讯作者：
J. Procházka;J. Schlaghamerský
中科院分区：
文献类型：
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作者：
J. Procházka;J. Schlaghamerský
由于大多数欧洲森林是为木材生产而进行商业管理的，不包括森林发展周期的解体阶段，许多物种已严重减少。森林管理的强度对生物多样性的养护至关重要，特别是对腐殖生物而言，因为它减少了老树和枯木的数量。我们研究了12个山地山毛榉，冷杉林分在中欧山脉的saperylytic甲虫。我们使用了72个飞行拦截陷阱暴露两个植被季节（2012年和2013年）放置在网站的特点是三个级别的枯木量。共采集到41科287种7990头。物种丰富度和非受威胁和受威胁物种的丰度没有显着差异，研究的三个林分类别。然而，存在的非受威胁和受威胁的物种，在研究的森林看台上的几个环境变量的影响。大直径的枯木，在最后腐烂阶段的枯木和死山毛榉木材接近陷阱显着影响受威胁的甲虫的组合。在较宽的陷阱环境中，树冠的开放度、稀疏的枯木和在较近的陷阱环境中，第二和第三腐烂阶段的枯木影响了非受威胁物种的聚集。
As most European forests are commercially managed for wood production, excluding the disintegration phase of the forest development cycle, a serious decline of numerous species has been observed. The intensity of forest management is critical for biodiversity conservation, especially in regard to saproxylic organisms, as it reduces the abundance of old trees and dead wood. We studied saproxylic beetles in 12 montane beech-fir stands in a Central European mountain range. We used 72 flight interception traps exposed for two vegetation seasons (2012 and 2013) placed at sites characterized by three levels of dead wood volume. In total, 7990 individuals of 287 species belonging to 41 families were collected. Species richness and abundance of both non-threatened and threatened species showed no significant differences among the three studied forest stand categories. Nevertheless, the presence of both non-threatened and threatened species in the studied forest stands was affected by several environmental variables. Large diameter dead wood, dead wood in the last decay stage and dead beech wood close to the traps significantly affected the assemblage of threatened beetles. Canopy openness, thin dead wood in the wider trap surroundings and dead wood in the second and third decay stage in the closer trap surroundings affected the assemblage of non-threatened species.