There is a lack of knowledge regarding the main factors modulating fungal spore deposition in forest ecosystems. We have described the local spatio-temporal dynamics of fungal spore deposition along a single fruiting season and its relation with fruit body emergence and rainfall events. Passive spore traps were weekly sampled during autumn and analysed by metabarcoding of the ITS2 region in combination with qPCR. There were larger compositional changes of deposited spores across sampling weeks than amongst sampling plots. Spore diversity and abundance correlated with mushroom emergence and weekly rainfall. Spore compositional changes were related to rainfall, with lower spatial compositional heterogeneity across plots during weeks with higher rainfall. Soil saprotrophs, and amongst them, puffball species, showed the strongest positive correlation with rainfall across fungal guilds. We saw high fine-scale temporal changes of deposited spores, and both mushroom emergence and rainfall may be important factors driving airborne spore deposition.

缺乏关于调节森林生态系统中真菌孢子沉积的主要因素的知识。我们已经描述了单个子季真菌孢子沉积的局部时空动态及其与子实体出苗和降雨事件的关系。在秋季，每周对被动孢子陷阱进行采样，并结合qPCR通过ITS2区的超条形码进行分析。在整个采样周内，沉积孢子的成分变化要比采样区更大。孢子的多样性和丰度与蘑菇的出现和每周的降雨有关。孢子组成的变化与降雨有关，在降雨较高的几周内，各样地的空间组成异质性较低。土壤腐生菌，其中有马勃菌属，与真菌行会的降雨之间显示出最强的正相关。我们看到沉积的孢子发生了高度精细的时间变化，蘑菇的出现和降雨都可能是推动空气传播的孢子沉积的重要因素。