| 3917 |
Creator |
9afccdbe975e25965953e777bb4d6a5f |
| 3917 |
Creator |
a83b960ddf2843a8567430721dcd0f08 |
| 3917 |
Creator |
ext-c5ffe9f653998e566500b79f6dbf8603 |
| 3917 |
Date |
2005 |
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Is Part Of |
repository |
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Is Part Of |
p00948276 |
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abstract |
Wetlands are a potent source of the radiatively important gas methane (CH4). Recent
findings have demonstrated that sulfate (SO4 2−) deposition via acid rain suppresses
CH4 emissions by stimulating competitive exclusion of methanogens by sulfate-reducing
microbial populations. Here we report data from a field experiment showing that a
finite pulse of simulated acid rain SO4 2− deposition, as would be expected from a
large Icelandic volcanic eruption, continues to suppress CH4 emissions from wetlands
long after the pollution event has ceased. Our analysis of the stoichiometries suggests
that 5 years is a minimum CH4 emission recovery period, with 10 years being a reasonable
upper limit. Our findings highlight the long-term impact of acid rain on biospheric
output of CH4 which, for discrete polluting events such as volcanic eruptions, outlives
the relatively short-term SO4 2− aerosol radiative cooling effect. |
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authorList |
authors |
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issue |
L12804 |
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status |
peerReviewed |
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volume |
32 |
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type |
AcademicArticle |
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type |
Article |
| 3917 |
label |
Gauci, Vincent ; Dise, Nancy and Blake, Stephen (2005). Long-term suppression
of wetland methane flux following a pulse of simulated acid rain. Geophysical Research
Letters, 32(L12804) |
| 3917 |
label |
Gauci, Vincent ; Dise, Nancy and Blake, Stephen (2005). Long-term suppression of
wetland methane flux following a pulse of simulated acid rain. Geophysical Research
Letters, 32(L12804) |
| 3917 |
Title |
Long-term suppression of wetland methane flux following a pulse of simulated acid
rain |
| 3917 |
in dataset |
oro |