Data from: Wood-inhabiting fungi with tight associations with other species have declined as a response to forest management

Research on mutualistic and antagonistic networks, such as plant–pollinator and host–parasite networks, has shown that species interactions can influence and be influenced by the responses of species to environmental perturbations. Here we examine whether results obtained for directly observable networks generalize to more complex networks in which species interactions cannot be observed directly. As a case study, we consider data on the occurrences of 98 wood-inhabiting fungal species in managed and natural forests. We specifically ask if and how much the positions of wood-inhabiting fungal species within the interaction networks influence their responses to forest management. For this, we utilize a joint species distribution model that partitions variation in species occurrences among environmental (i.e. resource availability) and biotic (i.e. species-to-species associations) predictors. Our results indicate that in addition to the direct loss of resource-specialised species, forest management has indirect effects mediated through interactive associations. In particular, species with strong associative links to other species are especially sensitive to forest management.

针对互利与拮抗网络（如植物-传粉者网络、宿主-寄生物网络）的相关研究表明，物种间的相互作用既会影响物种对环境扰动的响应，也会受到该响应的调控。本研究旨在探究：针对可直接观测的网络所得到的研究结论，是否可推广至物种相互作用无法直接观测的更为复杂的网络中。本研究以管理林与天然林内98种木生真菌的出现数据为案例展开分析，着重探讨木生真菌在相互作用网络中的节点位置，是否以及在多大程度上会影响其对森林经营措施的响应。为此，我们采用联合物种分布模型（joint species distribution model），将物种出现情况的变异分解为环境（即资源可获得性）与生物（即物种间关联）两类预测因子的贡献。研究结果显示，除了资源特化物种的直接丧失之外，森林经营还可通过物种间的相互关联产生间接效应。具体而言，与其他物种存在强关联的木生真菌，对森林经营措施的响应尤为敏感。