“…Elevated salinity can also lead to decreased sorption of NH 4 + to soil particles, and increased NH 4 concentrations may suppress N 2 fixation (e.g., Howarth 1988). The physiological effects of salinity on nitrifying and denitrifying microbes reduce the activity of these organisms (Furumai et al 1988;MacFarlane and Hebert 1984;Stehr et al 1995). Much of the research on the effects of rising salinity on soil and sediment biogeochemistry has focused on transient effects.…”