Chamber measurements of CH4 efflux and environmental variables from Lakkasuo peatland, Southern Finland

DOI

This study aimed at investigating the role of vegetation components, sedges, dwarf shrubs, and Sphagnum mosses, in methane fluxes of a boreal fen under natural and experimental water level drawdown conditions. We measured the fluxes during growing seasons 2001-2004 using the static chamber technique in a field experiment where the role of the ecosystem components was assessed via plant removal treatments. The first year was a calibration year after which the water level drawdown and vegetation removal treatments were applied. Under natural water level conditions, plant-mediated fluxes comprised 68 %-78% of the mean growing season flux (1.73 +/- 0.17 g CH4 m-2 month-1 from June to September), of which Sphagnum mosses and sedges accounted for one-fourth and three-fourths, respectively. The presence of dwarf shrubs, on the other hand, had a slightly attenuating effect on the fluxes. In water level drawdown conditions, the mean flux was close to zero (0.03 +/- 0:03 g CH4 m-2 month-1) and the presence and absence of the plant groups had a negligible effect.

Identifier
DOI https://doi.org/10.1594/PANGAEA.911742
Related Identifier https://doi.org/10.5194/bg-17-727-2020
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.911742
Provenance
Creator Riutta, Terhi ORCID logo; Korrensalo, Aino; Laine, Anna Maria ORCID logo; Laine, Jukka; Tuittila, Eeva-Stiina ORCID logo
Publisher PANGAEA
Publication Year 2020
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Representation
Language English
Resource Type Dataset
Format text/tab-separated-values
Size 24049 data points
Discipline Earth System Research
Spatial Coverage (24.311 LON, 61.792 LAT)
Temporal Coverage Begin 2001-01-01T00:00:00Z
Temporal Coverage End 2004-01-01T00:00:00Z