Herbivore dung quality affects plant community diversityAmmonium transformation in a nitrogen-rich tidal freshwater marshNitrogen assimilation and short term retention in a nutrient-rich tidal freshwater marsh - a whole ecosystem 15N enrichment studyPlanktonic and whole system metabolism in a nutrient-rich estuary (The Scheldt Estuary)Nitrogen cycling, retention and export in a eutrophic temperate macrotidal estuaryComparison of nitrifier activity versus growth in the scheldt estuary - a turbid, tidal estuary in northern EuropeNitrogen processing in a tidal freshwater marsh: a whole ecosystem 15N labeling studyTime series of the partial pressure of carbon dioxide (2001-2004) and preliminary inorganic carbon budget in the Scheldt plume (Belgian coastal waters)