Final answer:
DNRA is a process where bacteria use nitrate as a terminal electron acceptor, converting it to ammonia. DNRA can occur in soils, which can increase soil fertility. The addition of nitrification inhibitors can control excessive DNRA and ammonia loss.
Step-by-step explanation:
DNRA (Dissimilatory Nitrate Reduction to Ammonia) is a process in which some bacteria use nitrate as a terminal electron acceptor instead of oxygen, converting it to ammonia. An example of DNRA is the reduction of nitrate by bacteria in soils. The antecedent in this example is the presence of nitrate in the soil, the behavior is the reduction of nitrate by bacteria, the consequence is the production of ammonia, and the outcome is an increase in soil fertility. A solution to control excessive DNRA and resulting ammonia loss is the addition of nitrification inhibitors to slow down the conversion of ammonium to nitrate.
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