Authors
Roberto Cazzolla Gatti, Peter B Reich, Javier GP Gamarra, Tom Crowther, Cang Hui, Albert Morera, Jean-Francois Bastin, Sergio De-Miguel, Gert-Jan Nabuurs, Jens-Christian Svenning, Josep M Serra-Diaz, Cory Merow, Brian Enquist, Maria Kamenetsky, Junho Lee, Jun Zhu, Jinyun Fang, Douglass F Jacobs, Bryan Pijanowski, Arindam Banerjee, Robert A Giaquinto, Giorgio Alberti, Angelica Maria Almeyda Zambrano, Esteban Alvarez-Davila, Alejandro Araujo-Murakami, Valerio Avitabile, Gerardo A Aymard, Radomir Balazy, Chris Baraloto, Jorcely G Barroso, Meredith L Bastian, Philippe Birnbaum, Robert Bitariho, Jan Bogaert, Frans Bongers, Olivier Bouriaud, Pedro HS Brancalion, Francis Q Brearley, Eben North Broadbent, Filippo Bussotti, Wendeson Castro da Silva, Ricardo Gomes César, Goran Češljar, Víctor Chama Moscoso, Han YH Chen, Emil Cienciala, Connie J Clark, David A Coomes, Selvadurai Dayanandan, Mathieu Decuyper, Laura E Dee, Jhon Del Aguila Pasquel, Géraldine Derroire, Marie Noel Kamdem Djuikouo, Tran Van Do, Jiri Dolezal, Ilija Đ Đorđević, Julien Engel, Tom M Fayle, Ted R Feldpausch, Jonas K Fridman, David J Harris, Andreas Hemp, Geerten Hengeveld, Bruno Herault, Martin Herold, Thomas Ibanez, Andrzej M Jagodzinski, Bogdan Jaroszewicz, Kathryn J Jeffery, Vivian Kvist Johannsen, Tommaso Jucker, Ahto Kangur, Victor N Karminov, Kuswata Kartawinata, Deborah K Kennard, Sebastian Kepfer-Rojas, Gunnar Keppel, Mohammed Latif Khan, Pramod Kumar Khare, Timothy J Kileen, Hyun Seok Kim, Henn Korjus, Amit Kumar, Ashwani Kumar, Diana Laarmann, Nicolas Labrière, Mait Lang, Simon L Lewis, Natalia Lukina, Brian S Maitner, Yadvinder Malhi, Andrew R Marshall, Olga V Martynenko, Abel L Monteagudo Mendoza, Petr V Ontikov, Edgar Ortiz-Malavasi, Nadir C Pallqui Camacho, Alain Paquette, Minjee Park, Narayanaswamy Parthasarathy, Pablo Luis Peri, Pascal Petronelli, Sebastian Pfautsch, Oliver L Phillips, Nicolas Picard, Daniel Piotto, Lourens Poorter, John R Poulsen, Hans Pretzsch, Hirma Ramírez-Angulo, Zorayda Restrepo Correa, Mirco Rodeghiero, Rocío Del Pilar Rojas Gonzáles, Samir G Rolim, Francesco Rovero, Ervan Rutishauser, Purabi Saikia, Christian Salas-Eljatib, Dmitry Schepaschenko, Michael Scherer-Lorenzen, Vladimír Šebeň, Marcos Silveira, Ferry Slik, Bonaventure Sonké, Alexandre F Souza, Krzysztof Jan Stereńczak, Miroslav Svoboda, Hermann Taedoumg, Nadja Tchebakova, John Terborgh, Elena Tikhonova, Armando Torres-Lezama, Fons Van der Plas, Rodolfo Vásquez, Helder Viana, Alexander C Vibrans, Emilio Vilanova, Vincent A Vos, Hua-Feng Wang, Bertil Westerlund, Lee JT White, Susan K Wiser, Tomasz Zawiła-Niedźwiecki, Lise Zemagho, Zhi-Xin Zhu, Irié C Zo-Bi, Jingjing Liang
Publication date
2022/2/8
Journal
Proceedings of the National Academy of Sciences
Volume
119
Issue
6
Pages
e2115329119
Publisher
National Academy of Sciences
Description
One of the most fundamental questions in ecology is how many species inhabit the Earth. However, due to massive logistical and financial challenges and taxonomic difficulties connected to the species concept definition, the global numbers of species, including those of important and well-studied life forms such as trees, still remain largely unknown. Here, based on global ground-sourced data, we estimate the total tree species richness at global, continental, and biome levels. Our results indicate that there are ∼73,000 tree species globally, among which ∼9,000 tree species are yet to be discovered. Roughly 40% of undiscovered tree species are in South America. Moreover, almost one-third of all tree species to be discovered may be rare, with very low populations and limited spatial distribution (likely in remote tropical lowlands and mountains). These findings highlight the vulnerability of global forest biodiversity …
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