The success of habitat enhancements is typically assessed by subsequent monitoring of the focal taxonomic group. However, enhancement actions are likely to affect other, non-targeted species. On a south-facing slope in the Swiss Jura mountains, a mixed-forest stand was thinned out by irregular removal cuttings to improve the habitat conditions for reptiles. We used this enhancement action as a case study to monitor changes in the macrofungal community that came along with it. During 3 years before and after forest thinning, the site was visited between six and twelve times per year. Thereby, all apparent fungal species were recorded along a ringlike transect, split into 32 transect sections. We used site-occupancy models to estimate fungal species richness and abundance. These models allow to separately estimate occurrence probability and detection probability of species, and to account for differences in detection probability, depending on habitat and season. After the forest thinning, the occurrence probabilities of ectomycorrhizal and saprobic fungi were significantly higher than before. As a result, we estimated a mean increase in overall species richness by 4.4% (median 4.3%, CI 2.1–6.8%) and an increase in abundance by 20.0% (median 19.9%, CI 14.8–25.7%). The two major habitat changes associated with forest thinning, the decrease in living wood and the increase in dead wood on most transect sections, could not explain the whole extent of the estimated increase in species richness and abundance. We believe that forest thinning may have fostered fungal species richness by creating a larger density and diversity of suitable microhabitats. With some caution, we conclude that the small-scale habitat enhancement for reptiles at the Bolberg, creating islands of open forest, did not negatively affect species richness and abundance of macrofungi, a non-targeted species group.

通常通过随后对重点分类学组的监测来评估生境增强的成功。但是，增强作用可能会影响其他非目标物种。在瑞士汝拉山脉的朝南斜坡上，一片杂乱的林分被不规则的采伐物削薄，以改善爬行动物的栖息地条件。我们将这种增强措施用作案例研究，以监控随之而来的大型真菌群落的变化。在森林疏伐前后的三年中，每年要进行六到十二次访问。因此，沿环状样条记录了所有明显的真菌物种，分为32个样条部分。我们使用了站点占用模型来估计真菌物种的丰富度和丰度。这些模型允许根据生境和季节分别估计物种的发生概率和检测概率，并考虑检测概率的差异。森林间伐后，外生菌根和腐生真菌的发生概率明显高于以前。结果，我们估计总体物种丰富度平均增加了4.4％（中位数为4.3％，CI为2.1–6.8％），丰度增加了20.0％（中位数为19.9％，CI为14.8–25.7％）。与森林稀疏有关的两个主要生境变化，即大多数剖面上活木材的减少和枯木的增加，无法解释估计的物种丰富度和丰富度的整体范围。我们认为，森林间伐可能会通过创造更大的密度和合适的微生境多样性来促进真菌物种的丰富。谨慎起见，我们得出的结论是，博尔贝格（Bolberg）的爬行动物小规模生境增强（创建开阔森林的岛屿）并没有负面影响非目标物种组大型真菌的物种丰富度和丰度。