Warming-induced effects on microbial communities and nitrogen cycling capacity in tundra litter

Climate warming is changing tundra vegetation in the Arctic, with implications for plant litter properties. To address potential warming effects, we characterized the responses of bacterial and fungal communities and their genetically encoded capacity for inorganic nitrogen-transformations in the litter layer, as well as 15N natural abundance in the underlying soil layer as an integrated measure of nitrogen processes in the soil, in 16 long-term alpine and Arctic tundra warming experiments distributed across 12 circumpolar locations. While local conditions primarily shaped microbial communities, warming indirectly affected microbial nitrogen-cycling potentials through changes in herb dominance and litter mass, resulting in enhanced links between litter nitrogen cycling potentials and δ¹⁵N in the underlying soil. Our results suggest that warming-driven vegetation changes may intensify nitrogen-cycling with possible positive feedback on plant growth and ecosystem respiration across t..., , # Data from: Warming-induced effects on microbial communities and nitrogen cycling capacity in tundra litter

Dataset DOI: [10.5061/dryad.3ffbg79z4](https://doi.org/10.5061/dryad.3ffbg79z4)

## Description of the data and file structure

#### File 1: Data_Table_1.xlsx

**Description:** The data includes site information and litter and soil sample data, including microbiome data as specified in the list of variables below. The data file has seven tabs, with the first being a README describing the content of each tab, and all the column labels and units. The following tabs include sample metadata, quantification of genes in litter samples, the bacterial OTU table, the bacterial taxonomy, the fungal OTU table and the the fungal taxonomy. NA=not available due to missing data

##### Variables

* Sample location (latitude, longitude, elevation, country), tab \"Sample metadata\"
* sample number, site name, plot name, sampling date, tab \"Sample metadata\"
* site description, tab \"Sample_metadata\"
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