Since the mid-1900s, humans have been exerting an ever-increasing impact on the global nitrogen cycle. Human activities ... are chemotrophic (i.e., they use chemicals as their energy source ...

In addition to its quantity, the chemical speciation of nitrogen in seawater can ... This oxidation, as one of the central processes of the nitrogen cycle, is called nitrification. It is a two-step ...

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 ...

The major inorganic nutrients entering wetlands are nitrogen and phosphorus ... disrupting the nutrient cycle. Steps can be taken to prevent overload by reducing nutrients and chemicals lost from ...

Since the mid-1900s, humans have been exerting an ever-increasing impact on the global nitrogen cycle. Human activities ... are chemotrophic (i.e., they use chemicals as their energy source ...