“…In all cases, deterministic processes drove community assembly (Ning et al, 2019) and as hypothesised, the diversity of each microbial group was explained/governed by a different set of variables, but contrary to our hypothesis, alpha and beta diversity of all groups were mainly associated with edaphic properties. Indeed, while soil properties were expected to weight more on the bacterial and archaeal assemblies (Shi et al, 2016, Delgado-Baquerizo et al, 2018, Starke et al, 2021, we had hypothesised that topoclimatic variables would be more important for fungal and protist communities (Mod et al, Bates et al, 2013, Tedersoo et al, 2014, Mod et al, 2020, Oliverio et al, 2020. However, fungi and protists had a high proportion of unexplained variance but the lowest MST values, suggesting that especially for these groups, some key variables structuring these communities were missing from the models, such as soil microclimate (Lembrechts et al, 2019).…”