The biogeography of the Amazonian tree flora

We describe the geographical variation in tree species composition across Amazonian forests and show how environmental conditions are associated with species turnover. Our analyses are based on 2023 forest inventory plots (1 ha) that provide abundance data for a total of 5188 tree species. Within-plot species composition reflected both local environmental conditions (especially soil nutrients and hydrology) and geographical regions. A broader-scale view of species turnover was obtained by interpolating the relative tree species abundances over Amazonia into 47,441 0.1-degree grid cells. Two main dimensions of spatial change in tree species composition were identified. The first was a gradient between western Amazonia at the Andean forelands (with young geology and relatively nutrient-rich soils) and central-eastern Amazonia associated with the Guiana and Brazilian Shields (with more ancient geology and poor soils). The second gradient was between the wet forests of the northwest and the drier forests in southern Amazonia. Isolines linking cells of similar composition crossed major Amazonian rivers, suggesting that tree species distributions are not limited by rivers. Even though some areas of relatively sharp species turnover were identified, mostly the tree species composition changed gradually over large extents, which does not support delimiting clear discrete biogeographic regions within Amazonia.

Bibliographic Details

Main Authors:	Luize, Bruno Garcia, Tuomisto, Hanna, Ekelschot, Robin, Dexter, Kyle G., Amaral, Iêda L., De Souza Coelho, Luiz, de Almeida Matos, Francisca Dionízia, de Andrade Lima Filho, Diógenes, Salomão, Rafael P., Wittmann, Florian, Castilho, Carolina V., de Jesus Veiga Carim, Marcelo, Guevara, Juan Ernesto, Phillips, Oliver L., Magnusson, William E., Sabatier, Daniel, Cardenas Revilla, Juan David, Molino, Jean François, Irume, Mariana Victória, Martins, Maria Pires, da Silva Guimarães, José Renan, Ramos, José Ferreira, Bánki, Olaf S., Piedade, Maria Teresa Fernandez, Cárdenas López, Dairon, Pitman, Nigel C.A., Demarchi, Layon O., Schöngart, Jochen, Moraes de Leão Novo, Evlyn Márcia, Núñez Vargas, Percy, Silva, Thiago Sanna Freire, Venticinque, Eduardo Martins, Manzatto, Angelo Gilberto, Farias Costa Reis, Neidiane, Terborgh, John, Casula, Katia Regina, Honorio Coronado, Euridice N., Mendoza, Abel Monteagudo, Montero, Juan Carlos, Costa, Flávia R.C., Feldpausch, Ted R., Quaresma, Adriano Costa, Castaño Arboleda, Nicolás, Zartman, Charles Eugene, Killeen, Timothy J., Marimon, Beatriz S., Marimon, Ben Hur, Vasquez, Rodolfo, Mostacedo, Bonifacio, Assis, Rafael L., Baraloto, Chris, do Amaral, Dário Dantas, Engel, Julien, Petronelli, Pascal, Castellanos, Hernán, de Medeiros, Marcelo Brilhante, Simon, Marcelo Fragomeni, Andrade, Ana, Camargo, José Luís, Laurance, William F., Laurance, Susan G.W., Rincón, Lorena Maniguaje, Schietti, Juliana, Sousa, Thaiane R., Mori, Gisele Biem, de Sousa Farias, Emanuelle, Lopes, Maria Aparecida, Magalhães, José Leonardo Lima, Nascimento, Henrique Eduardo Mendonça, de Queiroz, Helder Lima, Vasconcelos, Caroline C., Aymard C, Gerardo A., Brienen, Roel, Stevenson, Pablo R., Araujo-Murakami, Alejandro, Cintra, Bruno Barçante Ladvocat, Baker, Tim R., Feitosa, Yuri Oliveira, Mogollón, Hugo F., Duivenvoorden, Joost F., Peres, Carlos A., Silman, Miles R., Ferreira, Leandro Valle, Lozada, José Rafael, Comiskey, James A., de Toledo, José Julio, Damasco, Gabriel, Dávila, Nállarett, Draper, Freddie C., García-Villacorta, Roosevelt, Lopes, Aline, Vicentini, Alberto, Valverde, Fernando Cornejo, Alonso, Alfonso, Arroyo, Luzmila, Dallmeier, Francisco, Gomes, Vitor H.F., Jimenez, Eliana M., Neill, David, Peñuela Mora, Maria Cristina, Noronha, Janaína Costa, de Aguiar, Daniel P.P., Barbosa, Flávia Rodrigues, Bredin, Yennie K., de Sá Carpanedo, Rainiellen, Carvalho, Fernanda Antunes, Coelho de Souza, Fernanda, Feeley, Kenneth J., Gribel, Rogerio, Haugaasen, Torbjørn, Hawes, Joseph E., Pansonato, Marcelo Petratti, Pipoly, John J., Paredes, Marcos Ríos, de Jesus Rodrigues, Domingos, Barlow, Jos, Berenguer, Erika, Brasil da Silva, Izaias, Ferreira, Maria Julia, Ferreira, Joice, Fine, Paul V.A., Guedes, Marcelino Carneiro, Levis, Carolina, Licona, Juan Carlos, Villa Zegarra, Boris Eduardo, Vos, Vincent Antoine, Cerón, Carlos, Durgante, Flávia Machado, Fonty, Émile, Henkel, Terry W., Householder, John Ethan, Huamantupa-Chuquimaco, Isau, Silveira, Marcos, Stropp, Juliana, Thomas, Raquel, Daly, Doug, Milliken, William, Molina, Guido Pardo, Pennington, Toby, Guimarães Vieira, Ima Célia, Albuquerque, Bianca Weiss, Campelo, Wegliane, Fuentes, Alfredo, Klitgaard, Bente, Pena, José Luis Marcelo, Tello, J.S., Vriesendorp, Corine, Chave, Jerome, Di Fiore, Anthony, Hilário, Renato Richard, de Oliveira Pereira, Luciana, Phillips, Juan Fernando, Rivas-Torres, Gonzalo, van Andel, Tinde R., von Hildebrand, Patricio, Balee, William, Barbosa, Edelcilio Marques, de Matos Bonates, Luiz Carlos, Dávila Doza, Hilda Paulette, Zárate Gómez, Ricardo, Gonzales, Therany, Gallardo Gonzales, George Pepe, Hoffman, Bruce, Junqueira, André Braga, Malhi, Yadvinder, de Andrade Miranda, Ires Paula, Pinto, Linder Felipe Mozombite, Prieto, Adriana, Rudas, Agustín, Ruschel, Ademir R., Silva, Natalino, Vela, César I.A., Zent, Stanford, Zent, Egleé L., Endara, María José, Cano, Angela, Carrero Márquez, Yrma Andreina, Correa, Diego F., Barbosa Pedrosa Costa, Janaina, Monteiro Flores, Bernardo, Galbraith, David, Holmgren, Milena, Kalamandeen, Michelle, Lobo, Guilherme, Torres Montenegro, Luis, Nascimento, Marcelo Trindade, Oliveira, Alexandre A., Pombo, Maihyra Marina, Ramirez-Angulo, Hirma, Rocha, Maira, Scudeller, Veridiana Vizoni, Umaña, Maria Natalia, van der Heijden, Geertje, Vilanova Torre, Emilio, Vargas, Tony Mori, Ahuite Reategui, Manuel Augusto, Baider, Cláudia, Balslev, Henrik, Cárdenas, Sasha, Casas, Luisa Fernanda, Farfan-Rios, William, Ferreira, Cid, Linares-Palomino, Reynaldo, Mendoza, Casimiro, Mesones, Italo, Parada, Germaine Alexander, Torres-Lezama, Armando, Urrego Giraldo, Ligia Estela, Villarroel, Daniel, Zagt, Roderick, Alexiades, Miguel N., de Oliveira, Edmar Almeida, Fortier, Riley P., Garcia-Cabrera, Karina, Hernandez, Lionel, Palacios Cuenca, Walter, Pansini, Susamar, Pauletto, Daniela, Ramirez Arevalo, Freddy, Sampaio, Adeilza Felipe, Valderrama Sandoval, Elvis H., Valenzuela Gamarra, Luis, Hirota, Marina, Palma-Silva, Clarisse, Ter Steege, Hans
Format:	Article/Letter to editor biblioteca
Language:	English
Subjects:	Life Science,
Online Access:	https://research.wur.nl/en/publications/the-biogeography-of-the-amazonian-tree-flora
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