Schmidt, BHM; Matzner, E: Abiotic reaction of nitrite with dissolved organic carbon? Testing the ferrous wheel hypothesis, Biogeochemistry, 93, 291-296 (2009)
The Ferrous Wheel Hypothesis (Davidson et al. 2003) postulates the abiotic formation of dissolved organic N (DON) in forest floors, by the fast reaction of NO2 − with dissolved organic C (DOC). We investigated the abiotic reaction of NO2 − with dissolved organic matter extracted from six different forest floors under oxic conditions. Solutions differed in DOC concentrations (15–60 mg L−1), NO2 − concentrations (0, 2, 20 mg NO2 −-N L−1) and DOC/DON ratio (13.4–25.4). Concentrations of added NO2 − never decreased within 60 min, therefore, no DON formation from added NO2 − took place in any of the samples. Our results suggest that the reaction of NO2 − with natural DOC in forest floors is rather unlikely.
Upcoming ...

BayCEER Colloquium:
Th. 2019-11-14
Analysis of ozone formation and trend over northern Bavaria by using stochastic and deterministic models
Th. 2019-11-21
Quantification of subsurface properties using the groundwater response to Earth and atmospheric tides
Fr. 2019-11-22
Geoökologie-Tagung 2019
Fr. 2019-11-15
Changing the game in Earth Observation - The European Union’s Copernicus programme -
Universitäts-Forum Bayreuth:
We. 2019-11-13 now
Bayreuther Innenstadt und Rotmaincenter: Freund oder Feind? - Betrachtungen aus der Perspektive der Besucher
BayCEER Blog
Stoichiometric controls of C and N cycling
Flying halfway across the globe to dig in the dirt – a research stay in Bloomington, USA
EGU – interesting research and free coffee
Picky carnivorous plants?
RSS Blog as RSS Feed
Weather research site
Luftdruck (356m): 960.0 hPa
Lufttemperatur: 5.8 °C
Niederschlag: 0.0 mm/24h
Sonnenschein: 6 h/d
Wind (Höhe 17m): 8.1 km/h
Wind (Max.): 14.0 km/h
Windrichtung: SW

Globalstrahlung: 57 W/m²
Lufttemperatur: 1.6 °C
Niederschlag: 0.0 mm/24h
Sonnenschein: <1 h/d
Wind (Höhe 32m): 8.3 km/h

This site makes use of cookies More information