Title: Patterns and drivers of organic matter decomposition in peatland open-water pools
Citation: Arsenault, J., Talbot, J., Moore, T. R., Knorr, K.-H., Teickner, H., & Lapierre, J.-F. (2024). Patterns and drivers of organic matter decomposition in peatland open-water pools [Dataset]. Zenodo. https://doi.org/10.5281/zenodo.10581235
Study Site: Grande plée Bleue, Québec
Purpose: Peatland pools are unvegetated, inundated depressions that cover up to 30 % of the surface of many temperate and boreal peatlands and that are net carbon (C) sources within C-accumulating ecosystems. The emission of carbon dioxide (CO2) and methane (CH4) from peatland pools comes from the degradation of organic matter (OM) that comprises the surrounding matrix. It is, however, not clear how decomposition rates in pools, which define their function and distinguish them from other aquatic ecosystems, vary spatially and what mechanisms drive these variations. We first quantified rates of OM decomposition from fresh litter at different depths in six pools of distinct morphological characteristics in a temperate ombrotrophic peatland using litterbags of Sphagnum capillifolium and Typha latifolia over a 27-month period.
Abstract: The five .csv files from this entrance comprise data used in Arsenault et al. "Patterns and drivers of organic matter decomposition in peatland open-water pools". This article was published on August 2nd 2024 in Biogeosciences (https://doi.org/10.5194/bg-21-3491-2024).
First three files contain data from the three phases of the research: the study spatiotemporal changes in fresh litter chemistry and decomposition rates using litterbags (file 'Arsenault_2024_LB'), the study of spatial variations in peatland pool sediment chemistry and decomposition (file 'Arsenault_2024_inc'), and the study of spatiotemporal change of pool water chemistry (file 'Arsenault_2024_water-chemistry').
File 'Arsenault_2024_LB_raw' contains raw data from the litterbag experiment from which we derived the decomposition rate constant 'k' shown in the 'Arsenault_2024_LB' file. File 'Arsenault_2024_inc_raw' contains CH4 and CO2 concentrations and production rates from the incubation experiments.
Supplemental Information Summary:
Research:
Further Info: Arsenault, J., Talbot, J., Moore, T. R., Knorr, K.-H., Teickner, H., and Lapierre, J.-F.: Patterns and drivers of organic matter decomposition in peatland open-water pools, Biogeosciences, 21, 3491–3507, https://doi.org/10.5194/bg-21-3491-2024, 2024
Status: Complete
Keywords:
carbon dioxide,
vegetation,
methane,
biomass,
hydrology,
Geographical coordinates: North: 46.78, South: 46.78 East: -71.05 West: -71.05
Bounding Temporal Extent: Start Date: 1991-01-01, End
Date: 2020-12-31
