Da escassez ao estresse do planeta: um século de mudanças no ciclo do nitrogênio

• Main Authors: Gabriel Garcia, Arnaldo Alves Cardoso, Oalas Aparecido Morais dos Santos
• Format: Article
• Language: English
• Published: Sociedade Brasileira de Química 2013-01-01
• Series: Química Nova
• Subjects: nitrogen cycle; reactive nitrogen; intensive agricultural
• Online Access: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422013000900032&lng=en&tlng=en

Heavy metals and pesticides are usually associated with the main problems humankind has created in the natural environment. However, compounds with characteristics of essential macronutrients are causing serious environmental changes that could intensify, compromising the diversity of life on the planet. This is the case of nitrogen compounds, produced by industrial processes for use in intensive agriculture in addition to those unwittingly produced from human activities, available in excess in the environment. These compounds warrant greater attention from researchers in various fields of knowledge and public agencies for environmental control, toward minimizing their availability in the environment, thereby returning conditions closer to the natural environmental balance of the planet.