Citation:

PANGAEA.911742

Name: Chamber measurements of CH4 efflux and environmental variables from Lakkasuo peatland, Southern Finland
Published: 2020-02-04
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Climate change; dwarf shrubs; Methane; Peatland; sedges; sphagnum

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Abstract:

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.

Keyword(s):

Climate change; dwarf shrubs; Methane; Peatland; sedges; sphagnum

Supplement to:

Riutta, Terhi; Korrensalo, Aino; Laine, Anna Maria; Laine, Jukka; Tuittila, Eeva-Stiina (2020): Interacting effects of vegetation components and water level on methane dynamics in a boreal fen. Biogeosciences, 17(3), 727-740, https://doi.org/10.5194/bg-17-727-2020

Coverage:

Latitude: 61.792000 * Longitude: 24.311000

Date/Time Start: 2001-01-01T00:00:00 * Date/Time End: 2004-01-01T00:00:00

Event(s):

Lakkasuo * Latitude: 61.792000 * Longitude: 24.311000

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Comment
1	Site	Site		Korrensalo, Aino
2	Treatment	Treat		Korrensalo, Aino	Waterlevel drawdown
3	Plot	Plot		Korrensalo, Aino	Number of plot
4	Plot	Plot		Korrensalo, Aino	Plot code
5	Treatment	Treat		Korrensalo, Aino	vegetation removal treatment
6	DATE/TIME	Date/Time		Korrensalo, Aino	Geocode – of treatment
7	Number of years	Years	a	Korrensalo, Aino	since treatment
8	Month	Month		Korrensalo, Aino
9	Day of the year	DOY	day	Korrensalo, Aino
10	Methane, flux	CH4 flux	g/m²/h	Korrensalo, Aino
11	Water level	WL	m	Korrensalo, Aino
12	Temperature, technical	T tech	°C	Korrensalo, Aino	temperature in the chamber during the measurement
13	Temperature, peat	T peat	°C	Korrensalo, Aino	at 5 cm depth
14	Temperature, peat	T peat	°C	Korrensalo, Aino	at 10 cm depth
15	Temperature, peat	T peat	°C	Korrensalo, Aino	at 20 cm depth
16	Temperature, peat	T peat	°C	Korrensalo, Aino	at 30 cm depth
17	Leaf area index	LAI		Korrensalo, Aino	of sedges (m²)
18	Leaf area index	LAI		Korrensalo, Aino	of shrubs (m²)
19	Leaf area index	LAI		Korrensalo, Aino	of all vascular plants (m²)
20	Sphagnum, cover	Sphagnum cov	%	Korrensalo, Aino

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Size:

24049 data points

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