Citation:

PANGAEA.911740

Name: Annual 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	DATE/TIME	Date/Time		Korrensalo, Aino	Geocode
2	Treatment	Treat		Korrensalo, Aino	Waterlevel drawdown
3	Plot	Plot		Korrensalo, Aino	Number of plot
4	Plot	Plot		Korrensalo, Aino	Plot code
5	Methane, flux per season	CH4 flux season	g/m²	Korrensalo, Aino	Season: June - September
6	Net ecosystem exchange of carbon dioxide per season	CO2 NEE season	g/m²	Korrensalo, Aino	Season: June - September
7	Sphagnum, cover	Sphagnum cov	%	Korrensalo, Aino

License:

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

Size:

867 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 Date/Time	2 Treat (Waterlevel drawdown)	3 Plot (Number of plot)	4 Plot (Plot code)	5 CH4 flux season [g/m²] (Season: June - September)	6 CO2 NEE season [g/m²] (Season: June - September)	7 Sphagnum cov [%]
2001-01-01T00:00:00	control	PSCD (control)	OL1	11.710422630	409.771919200	0.5500
2001-01-01T00:00:00	control	PSCD (control)	OL2	5.516798152	221.240108300	0.9500
2001-01-01T00:00:00	control	PSCD (control)	OL3	7.016260564	375.010422500	0.9010
2001-01-01T00:00:00	control	PSCD (control)	OL4	11.941505530	446.462506200	0.9000
2001-01-01T00:00:00	control	PSCD (control)	OL6	6.803563379	146.094218000	0.8000
2001-01-01T00:00:00	control	PSCD (control)	OL7	7.621105971	237.754382500	0.9400
2001-01-01T00:00:00	control	PSCD (control)	OL8	12.622266470	266.298908000	0.7000
2001-01-01T00:00:00	control	PSCD (control)	OL9	9.398693388	279.925847000	0.9500
2001-01-01T00:00:00	control	PSC (shrubs removed)	T2
2001-01-01T00:00:00	control	PSC (shrubs removed)	T3
2001-01-01T00:00:00	control	PSC (shrubs removed)	T4
2001-01-01T00:00:00	control	PSC (shrubs removed)	T5
2001-01-01T00:00:00	control	PSC (shrubs removed)	T7
2001-01-01T00:00:00	control	PS (shrubs and Carex sp. Removed)	T1
2001-01-01T00:00:00	control	PS (shrubs and Carex sp. Removed)	T8
2001-01-01T00:00:00	control	PS (shrubs and Carex sp. Removed)	T9
2001-01-01T00:00:00	control	P (bare peat, all vegetation removed)	OL31
2001-01-01T00:00:00	control	P (bare peat, all vegetation removed)	OL32
2001-01-01T00:00:00	control	P (bare peat, all vegetation removed)	OL33
2001-01-01T00:00:00	control	P (bare peat, all vegetation removed)	T6
2001-01-01T00:00:00	drawdown	PSCD (control)	OL10	5.463346888	522.439377400	0.7000
2001-01-01T00:00:00	drawdown	PSCD (control)	OL11	4.659038610	208.942620600	0.8000
2001-01-01T00:00:00	drawdown	PSCD (control)	OL12	9.376542582	331.476912100	0.8400
2001-01-01T00:00:00	drawdown	PSCD (control)	OL13	6.600674477	333.325420000	0.9100
2001-01-01T00:00:00	drawdown	PSCD (control)	OL14	17.191808810	365.173769400	0.8500
2001-01-01T00:00:00	drawdown	PSCD (control)	OL15	8.520384015	303.773449400	0.8700
2001-01-01T00:00:00	drawdown	PSCD (control)	OL17	10.657745210	463.081242300	0.8100
2001-01-01T00:00:00	drawdown	PSCD (control)	OL18	9.432478389	178.194844900	0.6000
2001-01-01T00:00:00	drawdown	PSC (shrubs removed)	T10
2001-01-01T00:00:00	drawdown	PSC (shrubs removed)	T13
2001-01-01T00:00:00	drawdown	PSC (shrubs removed)	T15
2001-01-01T00:00:00	drawdown	PSC (shrubs removed)	T18
2001-01-01T00:00:00	drawdown	PS (shrubs and Carex sp. Removed)	T12
2001-01-01T00:00:00	drawdown	PS (shrubs and Carex sp. Removed)	T14
2001-01-01T00:00:00	drawdown	PS (shrubs and Carex sp. Removed)	T17
2001-01-01T00:00:00	drawdown	P (bare peat, all vegetation removed)	OL34
2001-01-01T00:00:00	drawdown	P (bare peat, all vegetation removed)	OL36
2001-01-01T00:00:00	drawdown	P (bare peat, all vegetation removed)	T11
2001-01-01T00:00:00	drawdown	P (bare peat, all vegetation removed)	T16
2002-01-01T00:00:00	control	PSCD (control)	OL1	7.940995252	383.468743000	0.7000
2002-01-01T00:00:00	control	PSCD (control)	OL2	5.533568431	227.935216100	0.9100
2002-01-01T00:00:00	control	PSCD (control)	OL3	8.797331959	345.779948100	0.9500
2002-01-01T00:00:00	control	PSCD (control)	OL4	11.748421560	345.607644100	0.8500
2002-01-01T00:00:00	control	PSCD (control)	OL6	9.174473667	162.947513300	0.9510
2002-01-01T00:00:00	control	PSCD (control)	OL7	16.601778600	328.436703900	0.9000
2002-01-01T00:00:00	control	PSCD (control)	OL8	14.827840360	271.855210700	0.8000
2002-01-01T00:00:00	control	PSCD (control)	OL9	15.535384530	350.573667900	0.8500
2002-01-01T00:00:00	control	PSC (shrubs removed)	T2	22.736057900	272.429060000	0.7500
2002-01-01T00:00:00	control	PSC (shrubs removed)	T3	27.838613020	156.670608600	0.6550
2002-01-01T00:00:00	control	PSC (shrubs removed)	T4	32.723962950	132.756660200	0.3000
2002-01-01T00:00:00	control	PSC (shrubs removed)	T5	31.622485810	175.265495700	0.3000
2002-01-01T00:00:00	control	PSC (shrubs removed)	T7	23.403802170	296.201617200	0.9000
2002-01-01T00:00:00	control	PS (shrubs and Carex sp. Removed)	T1	22.113122260	-41.842992600	0.9200
2002-01-01T00:00:00	control	PS (shrubs and Carex sp. Removed)	T8	28.711877590	-171.808605000	0.4000
2002-01-01T00:00:00	control	PS (shrubs and Carex sp. Removed)	T9	20.976494980	-183.664499900	0.9500
2002-01-01T00:00:00	control	P (bare peat, all vegetation removed)	OL31	2.901106959	-424.605424400	0.0000
2002-01-01T00:00:00	control	P (bare peat, all vegetation removed)	OL32	9.576271062	-383.331703600	0.0000
2002-01-01T00:00:00	control	P (bare peat, all vegetation removed)	OL33	15.022771810	-219.340800600	0.0000
2002-01-01T00:00:00	control	P (bare peat, all vegetation removed)	T6	31.191685270	-170.737711400	0.0000
2002-01-01T00:00:00	drawdown	PSCD (control)	OL10	1.354531697	142.962896400	0.8000
2002-01-01T00:00:00	drawdown	PSCD (control)	OL11	0.649697689	26.240440870	0.9510
2002-01-01T00:00:00	drawdown	PSCD (control)	OL12	2.907869563	51.905977540	0.8000
2002-01-01T00:00:00	drawdown	PSCD (control)	OL13	1.335603804	14.263336760	0.4500
2002-01-01T00:00:00	drawdown	PSCD (control)	OL14	4.251055570	108.048422800	0.6100
2002-01-01T00:00:00	drawdown	PSCD (control)	OL15	1.473558931	111.003940100	0.4550
2002-01-01T00:00:00	drawdown	PSCD (control)	OL17	2.676712325	194.893203800	0.7500
2002-01-01T00:00:00	drawdown	PSCD (control)	OL18	1.020490033	-19.100914350	0.4050
2002-01-01T00:00:00	drawdown	PSC (shrubs removed)	T10	0.704860745	-291.319992100	0.7100
2002-01-01T00:00:00	drawdown	PSC (shrubs removed)	T13	1.709726066	-272.269018800	0.8500
2002-01-01T00:00:00	drawdown	PSC (shrubs removed)	T15	3.047724671	-604.125592600	0.8500
2002-01-01T00:00:00	drawdown	PSC (shrubs removed)	T18	1.032579041	-457.757715100	0.9500
2002-01-01T00:00:00	drawdown	PS (shrubs and Carex sp. Removed)	T12	0.087949177	-531.155371700	0.5000
2002-01-01T00:00:00	drawdown	PS (shrubs and Carex sp. Removed)	T14	1.899062633	-577.729207500	0.5000
2002-01-01T00:00:00	drawdown	PS (shrubs and Carex sp. Removed)	T17	0.535508550	-532.263144300	0.9800
2002-01-01T00:00:00	drawdown	P (bare peat, all vegetation removed)	OL34	1.106070875	-578.320017200	0.0000
2002-01-01T00:00:00	drawdown	P (bare peat, all vegetation removed)	OL36	1.598598871	-563.791604000	0.0000
2002-01-01T00:00:00	drawdown	P (bare peat, all vegetation removed)	T11	0.547720330	-581.838961300	0.0000
2002-01-01T00:00:00	drawdown	P (bare peat, all vegetation removed)	T16	0.465625880	-588.452987400	0.0000
2003-01-01T00:00:00	control	PSCD (control)	OL1	3.154259179	157.227823900	0.9110
2003-01-01T00:00:00	control	PSCD (control)	OL2	1.445994870	-20.778726180	0.9300
2003-01-01T00:00:00	control	PSCD (control)	OL3	2.586214574	154.582348100	0.9600
2003-01-01T00:00:00	control	PSCD (control)	OL4	5.919852080	188.293219700	0.9000
2003-01-01T00:00:00	control	PSCD (control)	OL6	3.523092933	-107.122463700	0.9800
2003-01-01T00:00:00	control	PSCD (control)	OL7	4.633713231	-4.898365708	0.6000
2003-01-01T00:00:00	control	PSCD (control)	OL8	3.823358856	97.657627300	0.9001
2003-01-01T00:00:00	control	PSCD (control)	OL9	3.015291478	94.458125810	0.8600
2003-01-01T00:00:00	control	PSC (shrubs removed)	T2	4.342112645	-41.337434810	0.6500
2003-01-01T00:00:00	control	PSC (shrubs removed)	T3	8.890745457	-146.205932700	0.7300
2003-01-01T00:00:00	control	PSC (shrubs removed)	T4	11.356699210	3.430924481	0.7520
2003-01-01T00:00:00	control	PSC (shrubs removed)	T5	8.262315217	67.601880810	0.4502
2003-01-01T00:00:00	control	PSC (shrubs removed)	T7	7.043846340	6.454972348	0.8000
2003-01-01T00:00:00	control	PS (shrubs and Carex sp. Removed)	T1	3.244101673	-283.084532000	0.8500
2003-01-01T00:00:00	control	PS (shrubs and Carex sp. Removed)	T8	6.287531058	-339.317052800	0.5360
2003-01-01T00:00:00	control	PS (shrubs and Carex sp. Removed)	T9	4.172016922	-389.829547100	0.3500
2003-01-01T00:00:00	control	P (bare peat, all vegetation removed)	OL31	0.012876653	-475.833499300	0.0000
2003-01-01T00:00:00	control	P (bare peat, all vegetation removed)	OL32	1.010088071	-466.192502100	0.0000
2003-01-01T00:00:00	control	P (bare peat, all vegetation removed)	OL33	6.016468710	-422.363280200	0.0000
2003-01-01T00:00:00	control	P (bare peat, all vegetation removed)	T6	3.400676042	-383.407577300	0.0000
2003-01-01T00:00:00	drawdown	PSCD (control)	OL10	-0.056641532	-11.206853110	0.3001
2003-01-01T00:00:00	drawdown	PSCD (control)	OL11	-0.320123663	-102.247419200	0.6100
2003-01-01T00:00:00	drawdown	PSCD (control)	OL12	0.934612677	-50.520274760	0.4500
2003-01-01T00:00:00	drawdown	PSCD (control)	OL13	0.034155989	-95.833296560	0.4500
2003-01-01T00:00:00	drawdown	PSCD (control)	OL14	1.890885863	-30.064536930	0.8200
2003-01-01T00:00:00	drawdown	PSCD (control)	OL15	0.208759180	-97.987109360	0.5800
2003-01-01T00:00:00	drawdown	PSCD (control)	OL17	1.216270932	90.820687080	0.6500
2003-01-01T00:00:00	drawdown	PSCD (control)	OL18	0.178495858	-167.522218300	0.2001
2003-01-01T00:00:00	drawdown	PSC (shrubs removed)	T10	-0.192747810	-361.193450400	0.1000
2003-01-01T00:00:00	drawdown	PSC (shrubs removed)	T13	0.364038385	-307.433856200	0.0800
2003-01-01T00:00:00	drawdown	PSC (shrubs removed)	T15	0.525660345	-482.719941900	0.8450
2003-01-01T00:00:00	drawdown	PSC (shrubs removed)	T18	0.344794928	-265.402463400	0.9710
2003-01-01T00:00:00	drawdown	PS (shrubs and Carex sp. Removed)	T12	-0.312359754	-538.811641000	0.0400
2003-01-01T00:00:00	drawdown	PS (shrubs and Carex sp. Removed)	T14	0.103351552	-528.976750600	0.1200
2003-01-01T00:00:00	drawdown	PS (shrubs and Carex sp. Removed)	T17	0.040648446	-512.982760200	0.2501
2003-01-01T00:00:00	drawdown	P (bare peat, all vegetation removed)	OL34	-0.388771854	-544.147647700	0.0000
2003-01-01T00:00:00	drawdown	P (bare peat, all vegetation removed)	OL36	0.024492185	-533.899018300	0.0000
2003-01-01T00:00:00	drawdown	P (bare peat, all vegetation removed)	T11	-0.258745349	-551.790683200	0.0000
2003-01-01T00:00:00	drawdown	P (bare peat, all vegetation removed)	T16	-0.177452794	-551.790683200	0.0000
2004-01-01T00:00:00	control	PSCD (control)	OL1	3.639632098	392.649798800	0.9501
2004-01-01T00:00:00	control	PSCD (control)	OL2	4.230943592	254.908064100	0.9370
2004-01-01T00:00:00	control	PSCD (control)	OL3	6.822592832	291.278011800	0.8800
2004-01-01T00:00:00	control	PSCD (control)	OL4	11.394535360	338.752816800	0.8000
2004-01-01T00:00:00	control	PSCD (control)	OL6	6.251278408	75.982266650	0.9551
2004-01-01T00:00:00	control	PSCD (control)	OL7	6.089692086	155.672031600	0.8650
2004-01-01T00:00:00	control	PSCD (control)	OL8	4.103932665	284.265686600	0.9350
2004-01-01T00:00:00	control	PSCD (control)	OL9	5.930660022	284.343335200	0.9600
2004-01-01T00:00:00	control	PSC (shrubs removed)	T2	6.934494173	126.321988100	0.8700
2004-01-01T00:00:00	control	PSC (shrubs removed)	T3	9.684979843	58.793851430	0.7100
2004-01-01T00:00:00	control	PSC (shrubs removed)	T4	11.026422980	131.157977600	0.6510
2004-01-01T00:00:00	control	PSC (shrubs removed)	T5	7.434314355	77.901202800	0.5000
2004-01-01T00:00:00	control	PSC (shrubs removed)	T7	6.003291430	103.213730700	0.8800
2004-01-01T00:00:00	control	PS (shrubs and Carex sp. Removed)	T1	4.393041528	13.753590750	0.9600
2004-01-01T00:00:00	control	PS (shrubs and Carex sp. Removed)	T8	2.262315174	-123.917056400	0.6330
2004-01-01T00:00:00	control	PS (shrubs and Carex sp. Removed)	T9	3.920903670	-84.849209100	0.8100
2004-01-01T00:00:00	control	P (bare peat, all vegetation removed)	OL31	0.279235362	-238.867744800	0.0000
2004-01-01T00:00:00	control	P (bare peat, all vegetation removed)	OL32	0.738050113	-240.626056300	0.0000
2004-01-01T00:00:00	control	P (bare peat, all vegetation removed)	OL33	4.848016624	-161.155455800	0.0000
2004-01-01T00:00:00	control	P (bare peat, all vegetation removed)	T6	2.016483908	-152.534461500	0.0000
2004-01-01T00:00:00	drawdown	PSCD (control)	OL10	0.095443037	-49.587717070	0.4800
2004-01-01T00:00:00	drawdown	PSCD (control)	OL11	-0.022423609	-74.328595340	0.7550
2004-01-01T00:00:00	drawdown	PSCD (control)	OL12	0.359373074	21.276503410	0.6000
2004-01-01T00:00:00	drawdown	PSCD (control)	OL13	0.008750249	-81.544027780	0.6000
2004-01-01T00:00:00	drawdown	PSCD (control)	OL14	0.889043072	-45.277719810	0.7050
2004-01-01T00:00:00	drawdown	PSCD (control)	OL15	0.280907133	-28.766159680	0.7505
2004-01-01T00:00:00	drawdown	PSCD (control)	OL17	1.202564890	-129.779394300	0.3050
2004-01-01T00:00:00	drawdown	PSCD (control)	OL18	0.289695268	-67.160862910	0.8050
2004-01-01T00:00:00	drawdown	PSC (shrubs removed)	T10	-0.102232584	-158.683475300	0.2901
2004-01-01T00:00:00	drawdown	PSC (shrubs removed)	T13	-0.142778602	-238.001761400	0.6500
2004-01-01T00:00:00	drawdown	PSC (shrubs removed)	T15	0.497613539	-323.714023100	0.9500
2004-01-01T00:00:00	drawdown	PSC (shrubs removed)	T18	0.470348907	-262.904310800	0.6000
2004-01-01T00:00:00	drawdown	PS (shrubs and Carex sp. Removed)	T12	0.023767384	-407.666998700	0.5000
2004-01-01T00:00:00	drawdown	PS (shrubs and Carex sp. Removed)	T14	0.042893055	-296.963877700	0.9000
2004-01-01T00:00:00	drawdown	PS (shrubs and Carex sp. Removed)	T17	-0.214024874	-390.738292600	0.8200
2004-01-01T00:00:00	drawdown	P (bare peat, all vegetation removed)	OL34	-0.002939016	-456.113355600	0.0000
2004-01-01T00:00:00	drawdown	P (bare peat, all vegetation removed)	OL36	0.001983326	-433.481333100	0.0000
2004-01-01T00:00:00	drawdown	P (bare peat, all vegetation removed)	T11	-0.174853124	-483.929587300	0.0000
2004-01-01T00:00:00	drawdown	P (bare peat, all vegetation removed)	T16	-0.147305496	-504.232552900	0.0000