Advanced

Emissions of greenhouse gases from ponds constructed for nitrogen removal

Stadmark, Johanna LU and Leonardson, Lars LU (2005) In Ecological Engineering: the Journal of Ecotechnology 25(5). p.542-551
Abstract
Methane and carbon dioxide emission from three constructed ponds were monitored during an annual cycle. Water temperature was a good predictor of methane emission in all three ponds. In the most intensively studied pond, nitrate concentration in the bottom water could further explain the amount of methane emitted. When water temperature exceeded 15 °C between 1 and 54 mg, CH4 m−2 h−1 was emitted on all occasions, while at temperatures below 10 °C, less than 0.6 mg CH4 m−2 h−1 was emitted. The flux of carbon dioxide differed between the ponds and no consistent patterns were found. In a laboratory study at 20 °C, we showed that high, but naturally occurring, nitrate concentrations (8 and 16 mg NO3−–N l−1) constrained the production of... (More)
Methane and carbon dioxide emission from three constructed ponds were monitored during an annual cycle. Water temperature was a good predictor of methane emission in all three ponds. In the most intensively studied pond, nitrate concentration in the bottom water could further explain the amount of methane emitted. When water temperature exceeded 15 °C between 1 and 54 mg, CH4 m−2 h−1 was emitted on all occasions, while at temperatures below 10 °C, less than 0.6 mg CH4 m−2 h−1 was emitted. The flux of carbon dioxide differed between the ponds and no consistent patterns were found. In a laboratory study at 20 °C, we showed that high, but naturally occurring, nitrate concentrations (8 and 16 mg NO3−–N l−1) constrained the production of methane compared to the treatment with no nitrate addition. Nitrous oxide production was positively correlated with nitrate concentration. Carbon dioxide production was highest at the highest nitrate concentration, which indicates that increased nitrate loading on ponds and wetlands will stimulate organic matter decomposition rates. Our conclusion is that these ponds constructed for nitrate removal emit greenhouse gases comparable to lakes in the temperate region. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Ecological Engineering: the Journal of Ecotechnology
volume
25
issue
5
pages
542 - 551
publisher
Elsevier
external identifiers
  • wos:000234581100007
  • scopus:28644431952
ISSN
1872-6992
DOI
10.1016/j.ecoleng.2005.07.004
language
English
LU publication?
yes
id
d42c62c8-9a4f-4c05-b69f-b9e5c96408f3 (old id 153317)
date added to LUP
2007-06-29 07:33:54
date last changed
2017-02-19 03:24:22
@article{d42c62c8-9a4f-4c05-b69f-b9e5c96408f3,
  abstract     = {Methane and carbon dioxide emission from three constructed ponds were monitored during an annual cycle. Water temperature was a good predictor of methane emission in all three ponds. In the most intensively studied pond, nitrate concentration in the bottom water could further explain the amount of methane emitted. When water temperature exceeded 15 °C between 1 and 54 mg, CH4 m−2 h−1 was emitted on all occasions, while at temperatures below 10 °C, less than 0.6 mg CH4 m−2 h−1 was emitted. The flux of carbon dioxide differed between the ponds and no consistent patterns were found. In a laboratory study at 20 °C, we showed that high, but naturally occurring, nitrate concentrations (8 and 16 mg NO3−–N l−1) constrained the production of methane compared to the treatment with no nitrate addition. Nitrous oxide production was positively correlated with nitrate concentration. Carbon dioxide production was highest at the highest nitrate concentration, which indicates that increased nitrate loading on ponds and wetlands will stimulate organic matter decomposition rates. Our conclusion is that these ponds constructed for nitrate removal emit greenhouse gases comparable to lakes in the temperate region.},
  author       = {Stadmark, Johanna and Leonardson, Lars},
  issn         = {1872-6992},
  language     = {eng},
  number       = {5},
  pages        = {542--551},
  publisher    = {Elsevier},
  series       = {Ecological Engineering: the Journal of Ecotechnology},
  title        = {Emissions of greenhouse gases from ponds constructed for nitrogen removal},
  url          = {http://dx.doi.org/10.1016/j.ecoleng.2005.07.004},
  volume       = {25},
  year         = {2005},
}