title: Use of nitrifying activity measurements for describing the effect of salinity on nitrification in the Scheldt estuary.
abstract: Nitrifying activity measurements, carried out on freshly collected samples from an estuarine environment, show that the composition of the nitrifier population undergoes a progressive modification during the mixing of freshwater masses in seawater, with increasing tolerance to salt. As a result, the overall effect of increasing salinity on nitrification is much less severe than the direct effect of salt on the freshwater nitrifying population.
mesh_terms: D005618:Fresh Water; D009566:Nitrates / Q000096:biosynthesis*; D010084:Oxidation-Reduction; D010933:Plankton / Q000378:metabolism*; D012623:Seawater; D012722:Sewage; D014871:Water Microbiology; D014876:Water Pollution
chemical_list: D009566:Nitrates; D012722:Sewage