Journal Article AuthorO. Sala, F. Chapin III, Juan Armesto, E. Barlow, J. Bloomfield, R. Dirzo, E. Huber-Sanwald, L. Huenneke, R.B. Jackson, A. Kinzig, R. Leemans, D.M. Lodge, H.A. Mooney, M. Oesterheld, N.L. PoffYear of Publication 2000 Journal Science Volume 287 Pages 1770-1774 DOI Google Scholar