RT Journal Article SR Electronic T1 Modification of forests by people means only 40% of remaining forests have high ecosystem integrity JF bioRxiv FD Cold Spring Harbor Laboratory SP 2020.03.05.978858 DO 10.1101/2020.03.05.978858 A1 H.S. Grantham A1 A. Duncan A1 T. D. Evans A1 K. Jones A1 H. Beyer A1 R. Schuster A1 J. Walston A1 J. Ray A1 J. Robinson A1 M. Callow A1 T. Clements A1 H.M. Costa A1 A. DeGemmis A1 P.R. Elsen A1 J. Ervin A1 P. Franco A1 E. Goldman A1 S. Goetz A1 A. Hansen A1 E. Hofsvang A1 P. Jantz A1 S. Jupiter A1 A. Kang A1 P. Langhammer A1 W.F. Laurance A1 S. Lieberman A1 M. Linkie A1 Y. Malhi A1 S. Maxwell A1 M. Mendez A1 R. Mittermeier A1 N. Murray A1 H. Possingham A1 J. Radachowsky A1 C. Samper A1 J. Silverman A1 A. Shapiro A1 B. Strassburg A1 T. Stevens A1 E. Stokes A1 R. Taylor A1 T. Tear A1 R. Tizard A1 O. Venter A1 P. Visconti A1 S. Wang A1 J.E.M. Watson YR 2020 UL http://biorxiv.org/content/early/2020/05/31/2020.03.05.978858.abstract AB Many global environmental agendas, including halting biodiversity loss, reversing land degradation, and limiting climate change, depend upon retaining forests with high ecological integrity, yet the scale and degree of forest modification remains poorly quantified and mapped. By integrating data on observed and inferred human pressures and an index of lost connectivity, we generate the first globally-consistent, continuous index of forest condition as determined by degree of anthropogenic modification. Globally, only 17.4 million km2 of forest (40.5%) have high landscape level integrity (mostly found in Canada, Russia, the Amazon, Central Africa and New Guinea) and only 27% of this area is found in nationally-designated protected areas. Of the forest in protected areas, only 56% has high landscape level integrity. Ambitious policies that prioritize the retention of forest integrity, especially in the most intact areas, are now urgently needed alongside current efforts aimed at halting deforestation and restoring the integrity of forests globally.Competing Interest StatementThe authors have declared no competing interest.