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Production of methyl bromide in a temperate forest soil
Author(s) -
Varner Ruth K.,
White Marguerite L.,
Mosedale Cindy H.,
Crill Patrick M.
Publication year - 2003
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2002gl016592
Subject(s) - flux (metallurgy) , temperate forest , temperate climate , environmental science , atmosphere (unit) , bromide , atmospheric sciences , environmental chemistry , tonne , trace gas , cycling , troposphere , chemistry , forestry , ecology , geology , physics , meteorology , organic chemistry , geography , biology
Field enclosure measurements of a temperate forest soil show net uptake of ambient methyl bromide (CH 3 Br), an important trace gas in both tropospheric and stratospheric ozone cycling. The net flux for 1999 was estimated to be −168 ± 72 μg CH 3 Br m −2 (negative indicates loss from the atmosphere). Individual enclosure flux measurements ranged from −4.0 to +3.3 μg CH 3 Br m −2 d −1 . Soil consumption of CH 3 Br was estimated from laboratory soil incubations. Production of CH 3 Br was calculated as the difference between net flux and predicted consumption. Fungi could be responsible for the production of CH 3 Br in this temperate forest soil.
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