They have been extensively studied in natural environments such as soils ... Ecological Implications of Human Alterations to the Nitrogen Cycle Many human activities have a significant impact ...

"Like most natural processes, anthropogenic activities are disrupting the nitrogen cycle through nitrogen deposition," says ...

This document helps agricultural producers understand how N interacts in the environment through the N cycle to guide maintenance and sustainability of agricultural crop production. The Nitrogen Cycle ...

Nitrogen gas makes up 78% of Earth’s atmosphere and is an essential component in amino acids and proteins. However, plants and animals cannot use nitrogen gas directly. Nitrates and other ...

Such a correlation between natural fertility and nitrogen deposition was not taken ... positive and negative feedbacks between the carbon cycle and the climate system, and therefore need to ...