Our interest is the investigation of the effects of river restoration techniques, specifically the plantation of helophytes, on pore water chemistry, focusing on understanding the mechanisms that control changes in carbon and distinguishing the specific factors that drive the biogeochemical processes responsible to improve water quality.
In a set-up of 12 artificial flumes, we will test the effect of three helophyte species, on water residence times and on nutrient mitigation, as well as the effect of labile dissolved carbon on nutrient mitigation. The designed experiment includes three vegetated treatments and one unvegetated which serves as control, all replicated by three. Pore water samples will be collected from 5 piezometers per flume, installed along its length, in order to characterize the system longitudinally for carbon, nitrogen and phosphorus compounds, as well as DO concentrations. Conservative tracer and nutrients’ slug injections will be conducted, before and during labile carbon fertilization, in order to estimate water residence time and nutrient uptake.
Leading scientist: Myrto Nikolakopoulou, PhD researcher at Naturalea-UB.