Sources of N

Biogeochemical effects

Physiological responses

Community responses

Case studies

Future study

References

Links

Nitrogen Cycle

Harvard Forest Chronic Nitrogen Plots

Effects of Increased Nitrogen Deposition on Subalpine Forest Growth (USGS)

Nitrex Experiment

Anthropogenic Effects on Nutrient and Water Relationships in Forest Ecosystems (Cornell)

Global Nitrogen Cycle (World Resources Institute)