Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Changes in ammonium concentration, nitrate concentration, AOB population size, and total bacterial population size after application of ammonium to microcosms. Dashed, dotted, and solid lines are 0, 1.5, and 7.5 mM ammonium sulfate treatments, respectively.
