Global analysis of nitrogen and phosphorus limitation of primary producers in freshwater, marine and terrestrial ecosystems (pages 1135–1142)James J. Elser, Matthew E.S. Bracken, Elsa E. Cleland, Daniel S. Gruner, W. Stanley Harpole, Helmut Hillebrand, Jacqueline T. Ngai, Eric W. Seabloom, Jonathan B. Shurin and Jennifer E. Smith
Article first published online: 8 OCT 2007 | DOI: 10.1111/j.1461-0248.2007.01113.x