|Title||Influence of protozoa and nutrient availability on nitrification rates in subsurface sediments|
|Publication Type||Journal Article|
|Year of Publication||1997|
|Authors||Strauss, EA, Dodds, WK|
Protozoan abundance, nitrification potential, and related factors in saturated subsurface sediments and the overlying soil were compared at a nonfertilized grassland and an agricultural cropland site. In a 6-week laboratory experiment, DOC, ammonium, and protozoan abundance were manipulated in flasks containing groundwater-sediment slurries. Microbial abundance (protozoa, actively respiring bacteria, and total bacteria) and nutrient concentrations (extractable ammonium and nitrate) were measured.