Nitrous oxide emissions to the atmosphere from an artificially oxygenated lake
- Limnological Research Center, Kastanienbaum (Sweden)
Nitrous oxide (N{sub 2}O) production at the sediment surface of eutrophic Lake Baldegg was quantified with three independent methods: pore-water samplers, benthic chambers, and mass balances of the aerated-oxygenated hypolimnion. N{sub 2}O production at the sediment surface was the most important source in this lake and led to an accumulation in the hypolimnion during summer stratification. Highest rates of N{sub 2}O emission to the atmosphere (24 {mu}mol m{sup {minus}2} d{sup {minus}1}) were observed after the onset of winter overturn, when hypolimnetic water enriched in N{sub 2}O came in contact with the atmosphere. During summer stratification N{sub 2}O emissions to the atmosphere decreased to {approximately}4 {mu}mol m{sup {minus}2} d {sup {minus}1}. The winter fluxes are close to the highest reported N{sub 2}O emissions from marine systems. 23 refs., 4 figs., 2 tabs.
- OSTI ID:
- 447715
- Journal Information:
- Limnology and Oceanography, Vol. 41, Issue 3; Other Information: PBD: May 1996
- Country of Publication:
- United States
- Language:
- English
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