학술논문
The number of tree species on Earth
Document Type
Report
Author
Gatti, Roberto Cazzolla; Reich, Peter B.; Gamarra, Javier G.P.; Crowther, Tom; Hui, Cang; Morera, Albert; Bastin, Jean-Francois; de-Miguel, Sergio; Nabuurs, Gert-Jan; Svenning, Jens-Christian; Serra-Diaz, Josep M.; Merow, Cory; Enquist, Brian; Kamenetsky, Maria; Lee, Junho; Zhu, Jun; Fang, Jinyun; Jacobs, Douglass F.; Pijanowski, Bryan; Banerjee, Arindam; Giaquinto, Robert A.; Alberti, Giorgio; Zambrano, Angelica Maria Almeyda; Alvarez-Davila, Esteban; Araujo-Murakami, Alejandro; Avitabile, Valerio; Aymard, Gerardo A.; Balazy, Radomir; Baraloto, Chris; Barroso, Jorcely G.; Bastian, Meredith L.; Birnbaum, Philippe; Bitariho, Robert; Bogaert, Jan; Bongersn, Frans; Bouriaud, Olivier; Brancalion, Pedro H.S.; Brearley, Francis Q.; Broadbent, Eben North; Bussotti, Filippo; da Silva, Wendeson Castro; Cesar, Ricardo Gomes; Cesljar, Goran; Moscoso, Victor Chama; Chen, Han Y.H.; Cienciala, Emil; Clark, Connie J.; Coomes, David A.; Dayanandan, Selvadurai; Decuyper, Mathieu; Dee, Laura E.; Pasquel, Jhon Del Aguila; Derroire, Geraldine; Djuikouo, Marie Noel Kamdem; Van Do, Tran; Dolezall, Jiri; Dordevic, Ilija D.; Engel, Julien; Fayle, Tom M.; Feldpausch, Ted R.; Fridman, Jonas K.; Harris, David J.; Hemp, Andreas; Hengeveld, Geerten; Herault, Bruno; Herold, Martin; Ibanez, Thomas; Jagodzinski, Andrzej M.; Jaroszewicz, Bogdan; Jeffery, Kathryn J.; Johannsen, Vivian Kvist; Jucker, Tommaso; Kangur, Ahto; Karminov, Victor N.; Kartawinata, Kuswata; Kennard, Deborah K.; Kepfer-Rojas, Sebastian; Keppel, Gunnar; Khan, Mohammed Latif; Khare, Pramod Kumar; Kileen, Timothy J.; Kim, Hyun Seok; Korjus, Henn; Kumar, Amit; Kumar, Ashwani; Laarmann, Diana; Labriere, Nicolas; Lang, Mait; Lewis, Simon L.; Lukina, Natalia; Maitner, Brian S.; Malhi, Yadvinder; Marshall, Andrew R.; Martynenko, Olga V.; Mendoza, Abel L. Monteagudo; Ontikov, Petr V.; Ortiz-Malavasi, Edgar; Pallqui, Nadir C.; Paquette, Alain; Park, Minjee; Parthasarathy, Narayanaswamy; Peri, Pablo Luis; Petronelli, Pascal; Pfautsch, Sebastian; Phillips, Oliver L.; Picard, Nicolas; Piotto, Daniel; Poorter, Lourens; Poulsen, John R.; Pretzsch, Hans; Ramirez-Angulo, Hirma; Correa, Zorayda Restrepo; Rodeghiero, Mirco; Del Pilar Rojas Gonzales, Rocio; Rolim, Samir G.; Rovero, Francesco; Rutishauser, Ervan; Saikia, Purabi; Salas-Eljatib, Christian; Schepaschenko, Dmitry; Scherer-Lorenzen, Michael; Seben, Vladimir; Silveira, Marcos; Slik, Ferry; Sonke, Bonaventure; Souza, Alexandre F.; Sterenczak, Krzysztof Jan; Svoboda, Miroslav; Taedoumg, Hermann; Tchebakova, Nadja; Terborgh, John; Tikhonova, Elena; Torres-Lezama, Armando; van der Plas, Fons; Vasquez, Rodolfo; Viana, Helder; Vibrans, Alexander C.; Vilanova, Emilio; Vos, Vincent A.; Wang, Hua-Feng; Westerlund, Bertil; White, Lee J.T.; Wiser, Susan K.; Zawila-Niedzwiecki, Tomasz; Zhu, Zhi-Xin; Zo-Bi, Irie C.; Liang, Jingjing
Source
Proceedings of the National Academy of Sciences of the United States. February 8, 2022, Vol. 119 Issue 6, p1A22, 11 p.
Subject
Language
English
ISSN
0027-8424
Abstract
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 to anthropogenic changes in land use and climate, which disproportionately threaten rare species and thus, global tree richness. biodiversity | forests | hyperdominance | rarity | richness