RT Journal Article SR Electronic T1 Half of the world’s tree biodiversity is unprotected and is increasingly threatened by human activities JF bioRxiv FD Cold Spring Harbor Laboratory SP 2020.04.21.052464 DO 10.1101/2020.04.21.052464 A1 Wen-Yong Guo A1 Josep M. Serra-Diaz A1 Franziska Schrodt A1 Wolf L. Eiserhardt A1 Brian S. Maitner A1 Cory Merow A1 Cyrille Violle A1 Madhur Anand A1 Michaël Belluau A1 Hans Henrik Bruun A1 Chaeho Byun A1 Jane A. Catford A1 Bruno E. L. Cerabolini A1 Eduardo Chacón-Madrigal A1 Daniela Ciccarelli A1 Johannes H. C. Cornelissen A1 Anh Tuan Dang-Le A1 Angel de Frutos A1 Arildo S. Dias A1 Aelton B. Giroldo A1 Kun Guo A1 Alvaro G. Gutiérrez A1 Wesley Hattingh A1 Tianhua He A1 Peter Hietz A1 Nate Hough-Snee A1 Steven Jansen A1 Jens Kattge A1 Tamir Klein A1 Benjamin Komac A1 Nathan Kraft A1 Koen Kramer A1 Sandra Lavorel A1 Christopher H. Lusk A1 Adam R. Martin A1 Maurizio Mencuccini A1 Sean T. Michaletz A1 Vanessa Minden A1 Akira S. Mori A1 Ülo Niinemets A1 Yusuke Onoda A1 Renske E. Onstein A1 Josep Peñuelas A1 Valério D. Pillar A1 Jan Pisek A1 Bjorn J.M. Robroek A1 Brandon Schamp A1 Martjin Slot A1 Ênio Sosinski A1 Nadejda A. Soudzilovskaia A1 Nelson Thiffault A1 Peter van Bodegom A1 Fons van der Plas A1 Ian J. Wright A1 Wu-Bing Xu A1 Jingming Zheng A1 Brian J. Enquist A1 Jens-Christian Svenning YR 2020 UL http://biorxiv.org/content/early/2020/04/23/2020.04.21.052464.abstract AB Although trees are key to ecosystem functioning, many forests and tree species across the globe face strong threats. Preserving areas of high biodiversity is a core priority for conservation; however, different dimensions of biodiversity and varied conservation targets make it difficult to respond effectively to this challenge. Here, we (i) identify priority areas for global tree conservation using comprehensive coverage of tree diversity based on taxonomy, phylogeny, and functional traits; and (ii) compare these findings to existing protected areas and global biodiversity conservation frameworks. We find that ca. 51% of the top-priority areas for tree biodiversity are located in current protected areas. The remaining half top-priority areas are subject to moderate to high human pressures, indicating conservation actions are needed to mitigate these human impacts. Our findings emphasize the effectiveness of using tree conservation priority areas for future global conservation planning.Competing Interest StatementThe authors have declared no competing interest.