Biological nitrogen fixation on Earth

Value 2e+14 Kg (N)/Year
Organism Biosphere
Reference John Harte, Consider a Spherical Cow: A Course in Environmental Problem Solving, Berkeley. 1988. University Science Books
Primary Source Table - link
Comments About 2/3 by continental organisms, one third by marine (including legumes). See BNID 105551
Entered by Uri M
ID 103507