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Article Dans Une Revue Proceedings of the National Academy of Sciences of the United States of America Année : 2022

High exposure of global tree diversity to human pressure

Josep Serra-Diaz
Franziska Schrodt
Chaeho Byun
Jane Catford
Eduardo Chacón-Madrigal
J. Hans C. Cornelissen
Anh Tuan Dang-Le
Arildo Dias
Kun Guo
Alvaro Gutiérrez
Wesley Hattingh
Tianhua He
Peter Hietz
Nate Hough-Snee
Steven Jansen
Jens Kattge
Tamir Klein
Benjamin Komac
  • Fonction : Auteur
Nathan Kraft
Koen Kramer
Sandra Lavorel
Christopher Lusk
Adam Martin
Maurizio Mencuccini
Sean Michaletz
Vanessa Minden
  • Fonction : Auteur
Akira Mori
Ülo Niinemets
Yusuke Onoda
Josep Peñuelas
Valério Pillar
Jan Pisek
Bjorn Robroek
Brandon Schamp
Martijn Slot
Ênio Egon Sosinski
Nadejda Soudzilovskaia
  • Fonction : Auteur
Nelson Thiffault
Peter van Bodegom
Fons van der Plas
  • Fonction : Auteur
Ian Wright
Wu-Bing Xu
Jingming Zheng
Brian Enquist
Jens-Christian Svenning

Résumé

Safeguarding Earth’s tree diversity is a conservation priority due to the importance of trees for biodiversity and ecosystem functions and services such as carbon sequestration. Here, we improve the foundation for effective conservation of global tree diversity by analyzing a recently developed database of tree species covering 46,752 species. We quantify range protection and anthropogenic pressures for each species and develop conservation priorities across taxonomic, phylogenetic, and functional diversity dimensions. We also assess the effectiveness of several influential proposed conservation prioritization frameworks to protect the top 17% and top 50% of tree priority areas. We find that an average of 50.2% of a tree species’ range occurs in 110-km grid cells without any protected areas (PAs), with 6,377 small-range tree species fully unprotected, and that 83% of tree species experience nonnegligible human pressure across their range on average. Protecting high-priority areas for the top 17% and 50% priority thresholds would increase the average protected proportion of each tree species’ range to 65.5% and 82.6%, respectively, leaving many fewer species (2,151 and 2,010) completely unprotected. The priority areas identified for trees match well to the Global 200 Ecoregions framework, revealing that priority areas for trees would in large part also optimize protection for terrestrial biodiversity overall. Based on range estimates for >46,000 tree species, our findings show that a large proportion of tree species receive limited protection by current PAs and are under substantial human pressure. Improved protection of biodiversity overall would also strongly benefit global tree diversity.
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Dates et versions

hal-03873631 , version 1 (28-11-2022)

Identifiants

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Wen-Yong Guo, Josep Serra-Diaz, Franziska Schrodt, Wolf Eiserhardt, Brian Maitner, et al.. High exposure of global tree diversity to human pressure. Proceedings of the National Academy of Sciences of the United States of America, 2022, 119 (25), ⟨10.1073/pnas.2026733119⟩. ⟨hal-03873631⟩
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