Data for: Diversity and specialization responses to climate and land use differ between deadwood fungi and bacteria

This dataset contains data from a field study conducted in 2019 and
described in the manuscript "Diversity and specialization responses
to climate and land use differ between deadwood fungi and bacteria".
To test the effects of land use and climate on diversity and community
specialization (H2') of deadwood-inhabiting microbes, we exposed
branches of four different tree species at 179 study sites, distributed
over a spatial extent of 300 km x 300 km and 1000 m in elevation. Study
sites were established in four local land-use types: forests, grasslands,
arable sites, and settlements, embedded in near-natural, agricultural, or
urban landscapes. We used negative-binomial generalized linear models for
diversity and calculated community specialization on host trees by using
the standardized two-dimensional Shannon entropy (H2') and
beta-regression models. Our results show that host identity and hence
specialization strongly exceed the effects of climate and land use for
fungal but not bacterial communities. This suggests contrasting responses
between microbial taxa to climate change and land-use intensification with
further consequences on deadwood diversity interactions and hence
decomposition processes.