Dead wood diversity promotes fungal diversity

Dead wood is a source of life as it provides habitat and substrate for a wide range of fungal species. A growing number of studies show an important role of wood quality for fungal diversity, but in most cases for a limited  number of wood traits or tree species. In this study, we evaluate how abiotic and biotic factors affect the fungal diversity and composition during dead wood decomposition. For 10 common European tree species, fresh similar-sized logs were incubated simultaneously in two Dutch forests. Annual surveys of fungal fruiting bodies were made for an 8-year period. For each tree species, 20 fresh stem traits were measured that are important for chemical and physical defence and for nutritional quality. Throughout 8 years, 4,644 fruiting bodies belonging to 255 species and 90 genera were recorded on the logs of 10 tree species. Fungal frequency and richness were higher for Angiosperms than for Gymnosperms, both for individual tree species and as a group, and higher for tree ...

枯木（dead wood）是重要的生命支撑资源，可为多种真菌物种提供栖息地与生长基质。越来越多的研究表明木材品质（wood quality）对真菌多样性（fungal diversity）具有关键调控作用，但多数相关研究仅聚焦于有限的木材性状（wood traits）或树种（tree species）范围。本研究旨在探究非生物因子（abiotic factors）与生物因子（biotic factors）如何在枯木分解过程中影响真菌多样性与群落组成。针对10种常见欧洲树种（European tree species），研究人员将同规格的新鲜原木同步布设至荷兰的两处森林样地中，并在随后8年间开展了年度真菌子实体（fungal fruiting bodies）调查。针对每个树种，研究人员测定了20项新鲜茎干性状（stem traits），这些性状与树木的化学防御、物理防御及营养品质密切相关。在8年的调查周期内，研究人员在10个树种的原木上共记录到4644个真菌子实体，隶属于255个物种、90个属。无论是按单个树种还是整体类群统计，被子植物（Angiosperms）上的真菌出现频率与物种丰富度均高于裸子植物（Gymnosperms），且在树种上更高……