Sources of reactive nitrogen affecting ecosystems in Latin America and the Caribbean
A review of anthropogenic sources of nitrogen and their effects on Canadian aquatic ecosystems
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Human activities changing the nitrogen cycle in Brazil
Assessment of nitrogen flows into the Cuban landscape
Urban influences on the nitrogen cycle in Puerto Rico
Nitrogen and phosphorus budgets for a tropical watershed impacted by agricultural land use
The influence of climate on average nitrogen export from large watersheds in the Northeastern United States
Coastal eutrophication assessment in the United States
Nitrogen cycling in tropical and temperate savannas
Nutrient—chlorophyll relationships in tropical—subtropical lakes
The stable carbon and nitrogen isotopic composition of vegetation in tropical forests of the Amazon Basin, Brazil