Snags are an important component of beech forests that promote biodiversity. However, their occurrence is completely marginal in managed stands. Creating snags in these stands would greatly enhance biodiversity. We investigated whether snag dimensions were important for saproxylic beetle richness since they were easily transferable parameters to forest management and assessed the presence of other snag microhabitats affecting beetle communities. Data collection was performed using passive flight traps placed on thirty snags in a recent beech reserve. A total of 6706 adults belonging to 231 saproxylic species (53 Red List species, 23%) were captured. The results showed that the most important snag parameters were the diameter (thickness) and canopy openness of the surrounding stands. The occurrence of Fomes fomentarius, the volume of snag and decay class 3 were marginally significant in terms of the preference of all saproxylic species. Alpha diversity was reduced by an advanced degree of decay and a surprisingly deep stem cavity. After dividing snag thickness into categories (<35 cm; 35–70 cm and >70 ​cm DBH), we found that categories with snag diameter greater than 35 ​cm showed little differences in all saproxylic and Red List species richness and diversity indices and exhibited the highest similarity in beetle communities. Regarding recommendations to forest managers in terms of optimization and simplification of practical procedures, we suggest actively creating high stumps to act as snags greater than 35 ​cm in DBH diameter to promote biodiversity in beech management stands.

障碍是山毛榉林促进生物多样性的重要组成部分。然而，它们在管理林中的出现完全是边缘化的。在这些林中设置障碍将大大增强生物多样性。我们调查了障碍尺寸是否对腐木甲虫丰富度很重要，因为它们很容易转移到森林管理中，并评估了影响甲虫群落的其他障碍微生境的存在。数据收集是使用放置在最近的山毛榉保护区的三十个障碍物上的被动飞行陷阱进行的。总共捕获了 6706 只成虫，属于 231 个腐木物种（53 个红色名录物种，占 23%）。结果表明，最重要的障碍参数是周围林分的直径（厚度）和树冠开放度。就所有腐木物种的偏好而言，Fomes fomentarius的出现、障碍物的体积和 3 级腐烂物的数量略有显着性。高度的腐烂和令人惊讶的深茎腔降低了阿尔法多样性。将断枝厚度分为不同类别（<35 cm；35–70 cm 和 >70 cm DBH）后，我们发现断枝直径大于 35 cm 的类别在所有腐木和红色名录物种丰富度和多样性指数方面几乎没有差异。甲虫群落表现出最高的相似性。关于对森林管理者优化和简化实际程序的建议，我们建议积极创建高树桩，作为胸径直径大于 35 厘米的障碍物，以促进山毛榉管理林的生物多样性。