What are the ecological effects of moderately high and prolonged concentrations of nitrogen deposition on an ecosystem?

Question

There are many sources of nitrogen which eventually get deposited out of the atmosphere and onto the land/surface. Typically higher levels of nitrogen compounds are emitted near urban and roadway locations, raising the levels of nitrogen deposited on the nearby landscape. **What are the ecological effects of moderately high (at least double background) and prolonged concentrations (10+ years) of nitrogen deposition on an ecosystem?** Please be specific about which type of ecosystem your comments are intended.

Answer 1

Hello, I'm not clear about your question. What do you mean by "deposition?" In the context of your question, the word "deposition" makes absolutely no sense. This much notwithstanding, increased N2 levels anywhere will promote plant growth.

I would be remiss if I didn't address this expression from your inquiry: "Typically higher levels of nitrogen compounds are emitted near urban and roadway locations," Yes this is true, but higher levels of nitrogenous compounds are formed in aquatic environments as well. Your question as stated makes no sense.

All the best,

Rand