Projects per year
In order to identify major environmental factors controlling inorganic nitrogen and carbon uptake by freshwater macrophyte species, we performed incubation experiments of macrophyte specimens in the presence of 15N-ammonium or -nitrate, and 13C-bicarbonate. Experiments where performed in specially designed whole plant incubators, which allow the isolation of the water-shoot phase from the sediment-root phase of specimens. The incubators where placed in a thermostatic cabinet with controlled light and temperature. Results showed that the 2 tested macrophyte species (Potamogeton natans and Callitriche platycarpa) had a preference for ammonium. Major factors controlling the N uptake are ammonium concentration and temperature, while major factors affecting C uptake are light and temperature. Additionally we could demonstrate that macrophytes used excess amounts of ammonium compared to biomass needs, while they were unable to satisfy their N needs with nitrate as only DIN source.
|Title of host publication||ASLO Aquatic Science meeting 2009|
|Publication status||Published - 2009|
|Event||Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet - Stockholm, Sweden|
Duration: 21 Sep 2009 → 25 Sep 2009
|Conference||Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet|
|Period||21/09/09 → 25/09/09|
FingerprintDive into the research topics of 'Use of 15N and 13C tracers to determine the effects of light, temperature, and DIN levels on the N and C uptake of freshwater macrophytes.'. Together they form a unique fingerprint.
- 2 Finished
OZR1640: Macrophytes and nitrogen dynamicx: process studies on specimens from the upper reaches of the Scheldt river
1/01/08 → 31/12/08
DWTC220: Macrophytes and nutrient dynamics: process and field studies in the upper reaches of river basins - MANUDYN II. (FASE 1 en Fase 2)
15/12/06 → 31/01/11