Stordalen Mire mire-wide survey: Plot-level vegetation greenness, porewater pH, and methane production data (from porewater measurements, models, and microbial analyses)

Plot-level data from all mire-wide plots in Stordalen Mire (northern Sweden) sampled in July 2015, including vegetation greenness area (VGA); porewater pH and methane (CH4) concentrations and δ13C at 20cm; Wetland-DNDC-modeled hydrogenotrophic & acetoclastic CH4 production, oxidation, net emission, and δ13C values; microbial hydrogenotroph:acetoclast ratios; and methanogen relative abundances.

More details of the plots, including latitude, longitude, and species-specific vegetation cover, are in the dataset "Stordalen Mire mire-wide survey: Vegetation cover" (https://doi.org/10.5281/zenodo.15048198). Metadata for the microbial samples, including the numeric depths for shallow (S), mid (M), and deep (D) samples, are defined in "Stordalen Mire mire-wide survey: Microbial sample metadata" (https://doi.org/10.5281/zenodo.15047156). For "methanogen relative abundance summed across depths", methanogen ASVs' relative abundances were summed across depths, and CLR-transformed consistent with other Methods; and site 13 was excluded because that site did not have data for all 3 depths. NA indicates no data available for that sampling site. Blank cells indicate a value of 0 for VGA columns, and NA for all other columns.

FUNDING:

• National Aeronautics and Space Administration, Interdisciplinary Science program: From Archaea to the Atmosphere (award # NNX17AK10G).
• National Science Foundation, Biology Integration Institutes Program: EMERGE Biology Integration Institute (award # 2022070).
• United States Department of Energy Office of Biological and Environmental Research, Genomic Science Program: The IsoGenie Project (grant #s DE-SC0004632, DE-SC0010580, and DE-SC0016440).
• National Science Foundation, MacroSystems program (grant # EF-1241037).
• Sequencing was performed using startup funding from the University of Arizona to Virginia Rich.
• We thank the Swedish Polar Research Secretariat and SITES for the support of the work done at the Abisko Scientific Research Station. SITES is supported by the Swedish Research Council's grant 4.3-2021-00164