Nitrogen yields from undisturbed watersheds in the Americas

  title={Nitrogen yields from undisturbed watersheds in the Americas},
  author={William M. Jr. Lewis and John Melack and W. H. McDowell and Michael A McClain and Jeffrey E. Richey},
Yields of total fixed nitrogen and nitrogen fractions are summarized for thirty-one watersheds in which anthropogenic disturbance of the nitrogen cycle, either through land use or atmospheric deposition, is negligible or slight. These yields are taken as representative of background conditions over a broad range of watershed areas, elevations, and vegetation types. The data set focuses on watersheds of the American tropics, but also includes information on the Gambia River (Africa) and some… CONTINUE READING