Fraction of global terrestrial Biological Nitrogen Fixation (BNF) that occurs in tropical rain forests

Value 24 %
Organism Biosphere
Reference Galloway et al., Nitrogen Cycles: Past, Present, and Future, Biogeochemistry September 2004, Volume 70, Issue 2, pp 153-226 p.160 top paragraph
Primary Source Cleveland C.C., Townsend A.R., Schimel D.S., Fisher H., Howarth R.W., Hedin L.O., Perakis S.S., Latty E.F., Von Fischer J.C., Elseroad A. and Wasson M.F. 1999. Global patterns of terrestrial biological nitrogen (N2) fixation in natural ecosystems. Global Biogeochem. Cycles 13: 623–645.
Comments "In a recent compilation of rates of natural BNF by Cleveland et al. (primary source), symbiotic BNF rates for several biome types are based on one-to-few published rates of symbiotic BNF at the plot scale within each particular biome. For example, based on the few estimates of symbiotic BNF available for tropical rain forests, estimated BNF in these systems represents 24% of total natural terrestrial BNF globally on an annual basis (primary source)."
Entered by Uri M
ID 110432