Zoeken
Zoeken kan via de modus 'eenvoudig zoeken' (één veld) of uitgebreid via 'geavanceerd zoeken' (meerdere velden). Zo kan je bv. zoeken op een combinatie van een auteursnaam (auteur), een jaartal (jaar) en een documenttype.
Boekenmand
Nuttige resultaten kan je aanvinken en toevoegen aan een mandje. De inhoud hiervan kan je exporteren of afdrukken (naar bv. PDF).
RSS
Op de hoogte blijven van nieuw toegevoegde publicaties binnen uw interessegebied? Dit kan door een RSS-feed (?) te maken van jouw zoekopdracht.
nieuwe zoekopdracht
| one publication added to basket [295790] |
Oxygenation of an anoxic fjord basin strongly stimulates benthic denitrification and DNRA
De Brabandere, L.; Bonaglia, S.; Kononets, M.Y.; Viktorsson, L.; Stigebrandt, A.; Thamdrup, B.; Hall, P.O.J. (2015). Oxygenation of an anoxic fjord basin strongly stimulates benthic denitrification and DNRA. Biogeochemistry 126(1-2): 131-152. https://dx.doi.org/10.1007/s10533-015-0148-6
In: Biogeochemistry. Springer: Dordrecht; Lancaster; Boston. ISSN 0168-2563; e-ISSN 1573-515X
|  |
| Trefwoord |
|
| Author keywords |
Dissimilatory nitrate reduction; Denitrification; DNRA; Anammox;Engineered oxygenation; Hypoxia; By Fjord |
| Auteurs | | Top |
- De Brabandere, L.
- Bonaglia, S.
- Kononets, M.Y.
- Viktorsson, L.
|
- Stigebrandt, A.
- Thamdrup, B.
- Hall, P.O.J.
|
|
| Abstract |
Hypoxia hampers eutrophication reduction efforts by enabling high nutrient fluxes from sediment to bottom waters. Oxygenation of hypoxic water bodies is often proposed to reduce benthic ammonium and phosphate release. This study investigates the functional response of benthic nitrate-reducing processes to a long-term engineered oxygenation effort in a density-stratified fjord with euxinic bottom waters. Oxygenation was achieved by mixing surface water with deep, euxinic water, which increased oxygen and nitrate concentrations in the deep water column. The presence of nitrate instigated benthic nitrate reduction in the newly oxidized sediments by equally stimulating denitrification and dissimilatory nitrate reduction to ammonium (DNRA). DNRA and total nitrate reduction rates, as well as the contribution of DNRA to total nitrate reduction, decreased with increasing exposure time of the sediments to oxygen. The relative importance of DNRA as a nitrate sink was correlated to nitrate concentrations, with more nitrate being reduced to ammonium at higher bottom water nitrate concentrations. Overall, engineered oxygenation decreased the net efflux of dissolved inorganic nitrogen from the sediments by stimulating net nitrate removal through denitrification. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
