Some bacteria use ammonia. As diverse as bacteria are I suspect that some bacteria species also use nitrate as a food source. Some types of plants (esp algae) consume ammonia directly, thus they both use ammonia which by my definition compete with each other for ammonia. If some bacteria are able to utilize nitrate then they too also compete with plants for nitrate.

Last edited by Bill Cody; 10/30/14 06:50 PM.
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