SPRUCE: Redox-Active Subsurface Organic Matter, Marcell Experimental Forest, Minnesota, 2023

Description

This dataset contains measurements that report on the effects of the SPRUCE experimental treatments on redox-active organic matter (RAOM) reduction (Valenzuela and Cervantes, 2021). Measurements occurred at the SPRUCE Experiment site in the Marcell Experimental Forest in northern Minnesota, USA. This work is also a follow-up to Rush et al. (2021a) which investigated effects of temperature on RAOM reduction after two years of experimental warming (Rush et al. 2021b). This follow-up dataset addresses two main questions; (i) How does warming and elevated carbon dioxide (CO₂) directly affect in situ RAOM reduction, and subsequent methane (CH₄) and CO₂ production, across the peat depth profile? and (ii) How has long-term warming and elevated CO₂ changed the total RAOM pool, and subsequent CH₄ and CO₂ production, across the peat depth profile? 

This dataset reports electron shuttling capacity (a proxy for RAOM reduction; Keller, and Takagi, 2013) and carbon dioxide (CO2) and methane (CH4) concentrations both in one-week in situ incubations (2023-05-31 to 2023-08-01) and 42-day laboratory incubations from peat collected in 2023 (2023-05-31 to 2023-06-26). Laboratory incubations also measured acetate concentrations. The 2023 laboratory incubations were also compared with laboratory incubations conducted on peat collected in 2016 (Rush et al. 2021b). This dataset contains three data files in comma-separate (.csv) format. Additional metadata are provided: three data dictionaries and a file-level metadata file in comma separate (.csv) format and a user guide in PDF (*.pdf) format.

Citation

Rush, JE, JK Keller, CA Zalman, ZS Schwartz, and ES Hinckley. 2025. SPRUCE Redox-Active Subsurface Organic Matter, Marcell Experimental Forest, Minnesota, 2023. Oak Ridge National Laboratory, TES SFA, U.S. Department of Energy, Oak Ridge, Tennessee, U.S.A. https://doi.org/10.25581/spruce.128/2574526

Download

Data and Documentation

Download

Posted

Wednesday, November 19, 2025

SPRUCE ID: spruce.128

Public