Minor long-term effects of ultraviolet-B radiation on methane dynamics of a subarctic fen in Northern Finland
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Minor long-term effects of ultraviolet-B radiation on methane dynamics of a subarctic fen in Northern Finland. / Mörsky, Sami K.; Haapala, Jaana K.; Rinnan, Riikka; Saarnio, Sanna; Suokanerva, Hanne; Latola, Kirsi; Kyrö, Esko; Silvola, Jouko; Holopainen, Toini; Martikainen, Pertti J.
I: Biogeochemistry, Bind 108, Nr. 1-3, 2012, s. 233-243.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Minor long-term effects of ultraviolet-B radiation on methane dynamics of a subarctic fen in Northern Finland
AU - Mörsky, Sami K.
AU - Haapala, Jaana K.
AU - Rinnan, Riikka
AU - Saarnio, Sanna
AU - Suokanerva, Hanne
AU - Latola, Kirsi
AU - Kyrö, Esko
AU - Silvola, Jouko
AU - Holopainen, Toini
AU - Martikainen, Pertti J.
PY - 2012
Y1 - 2012
N2 - The effects of elevated ultraviolet-B (UVB)radiation on methane dynamics was studied in anatural fen in Northern Finland for three growingseasons (2003–2005). This is the first in situ study onthe effects of elevated UV-B radiation on methanedynamics in a natural fen. The experimental setupconsisted of 30 study plots (120 9 120 cm) that wererandomly divided into three treatments: ambientcontrol, UV-A control and elevated UV-B. The UVBenhancements were 63, 37 and 21% above ambientduring the growing seasons 2003, 2004 and 2005,respectively. Elevated UV-B did not affect net methaneemission. Stable isotope composition of methaneindicated that methane was produced by the acetatefermentation. Under elevated UV-B there was a slightincrease in the concentrations of acetate and propionatebut decrease in the oxalate concentration suggestingUV-B-induced changes in the belowground processes.The results emphasize the need for long-term fieldstudies under moderately enhanced exposures to estimatewhether the function and feedbacks of mireecosystems change under increased UV-B radiation.
AB - The effects of elevated ultraviolet-B (UVB)radiation on methane dynamics was studied in anatural fen in Northern Finland for three growingseasons (2003–2005). This is the first in situ study onthe effects of elevated UV-B radiation on methanedynamics in a natural fen. The experimental setupconsisted of 30 study plots (120 9 120 cm) that wererandomly divided into three treatments: ambientcontrol, UV-A control and elevated UV-B. The UVBenhancements were 63, 37 and 21% above ambientduring the growing seasons 2003, 2004 and 2005,respectively. Elevated UV-B did not affect net methaneemission. Stable isotope composition of methaneindicated that methane was produced by the acetatefermentation. Under elevated UV-B there was a slightincrease in the concentrations of acetate and propionatebut decrease in the oxalate concentration suggestingUV-B-induced changes in the belowground processes.The results emphasize the need for long-term fieldstudies under moderately enhanced exposures to estimatewhether the function and feedbacks of mireecosystems change under increased UV-B radiation.
U2 - 10.1007/s10533-011-9593-z
DO - 10.1007/s10533-011-9593-z
M3 - Journal article
VL - 108
SP - 233
EP - 243
JO - Biogeochemistry
JF - Biogeochemistry
SN - 0168-2563
IS - 1-3
ER -
ID: 34523742