Dynamics of standing deadwood in Austrian forests under varying forest management and climatic conditions

Standing deadwood is an important structural component of forest ecosystems. Its occurrence and dynamics influence both carbon fluxes the availability habitats for many species. However, greatly reduced in managed, even currently unmanaged temperate forests Europe. To date, few studies have examined how environmental factors, management changing climate affect standing its dynamics. Data from five periods Austrian National Forest Inventory (1981–2009) were used to (I) analyse volume relation living stock, elevation, eco-region, type, ownership intensity, (II) investigate intensity on snag persistence (III) define drivers loss seven tree genera (Abies, Alnus, Fagus, Larix, Picea, Pinus Quercus) using tree-related, site-related climate-related variables, predict under two change scenarios. was mainly determined by stock resulting different distributions between eco-regions. While type influenced only slightly, latter exhibited a significant effect persistence. Snag shorter intensively managed than extensively private public forests. driven combination diameter at breast height, as well temperature, precipitation relative humidity. Volume predictions revealed constant rates moderate (RCP2.6) end 21st century. Under severe conditions (RCP8.5), increased most genera, with Quercus, Alnus Picea showing depending model baseline scenario. We observed trends towards faster higher temperatures lower elevations slower high levels. The susceptible while Abies least susceptible. Synthesis applications. recommend protect dead trees regular harvesting ensure full decomposition process. consequences decomposition-dependent species must be taken into account evaluate influences