Mapping density, diversity and species-richness of the Amazon tree flora

Using 2.046 botanically-inventoried tree plots across the largest tropical forest on Earth, we mapped tree species-diversity and tree species-richness at 0.1-degree resolution, and investigated drivers for diversity and richness. Using only location, stratified by forest type, as predictor, our spatial model, to the best of our knowledge, provides the most accurate map of tree diversity in Amazonia to date, explaining approximately 70% of the tree diversity and species-richness. Large soil-forest combinations determine a significant percentage of the variation in tree species-richness and tree alpha-diversity in Amazonian forest-plots. We suggest that the size and fragmentation of these systems drive their large-scale diversity patterns and hence local diversity. A model not using location but cumulative water deficit, tree density, and temperature seasonality explains 47% of the tree species-richness in the terra-firme forest in Amazonia. Over large areas across Amazonia, residuals of this relationship are small and poorly spatially structured, suggesting that much of the residual variation may be local. The Guyana Shield area has consistently negative residuals, showing that this area has lower tree species-richness than expected by our models. We provide extensive plot meta-data, including tree density, tree alpha-diversity and tree species-richness results and gridded maps at 0.1-degree resolution.

Bibliographic Details

Main Authors:	Ter Steege, Hans, Pitman, Nigel C. A., do Amaral, Iêda Leão, de Souza Coelho, Luiz, de Almeida Matos, Francisca Dionízia, de Andrade Lima Filho, Diogenes, Salomão, Rafael P., Wittmann, Florian, Castilho, Carolina V., Guevara, Juan Ernesto, de Jesus Veiga Carim, Marcelo, Phillips, Oliver L., Magnusson, William E, Sabatier, Daniel, Cardenas Revilla, Juan David, Molino, Jean-François, Irume, Mariana Victória, Pires Martins, Maria, da Silva Guimarães, José Renan, Ferreira Ramos, José, Banki, Olaf, Fernandez Piedade, Maria Teresa, Cárdenas López, Dairon, de Jesus Rodrigues, Domingos, Demarchi, Layon O., Schöngart, Jochen, Almeida, Everton José, Ferreira Barbosa, Luciane, Cavalheiro, Larissa, Vilela dos Santos, Márcia Cléia, Garcia Luize, Bruno, Moraes de Leão Novo, Evlyn Márcia, Nuñez Vargas, Percy, Freire Silva, Thiago Sanna, Venticinque, Eduardo Martins, Manzatto, Angelo Gilberto, Costa Reis, Neidiane Farias, Terborgh, John, Casula, Katia Regina, Honorio Coronado, Eurídice N., Monteagudo Mendoza, Abel L., Montero, Juan Carlos, Costa, Flávia R.C, Feldpausch, Ted R., Costa Quaresma, Adriano, Castaño Arboleda, Nicolás, Zartman, Charles Eugene, Killeen, Timothy J., Marimon, Beatriz Schwantes, Marimon-Junior, Ben Hur, Vasquez, Rodolfo, Mostacedo, Bonifacio, Assis, Rafael L., Baraloto, Christopher, do Amaral, Dário Dantas, Engel, Julien, Petronelli, Pascal, et al.
Format:	article biblioteca
Language:	eng
Subjects:	P01 - Conservation de la nature et ressources foncières, F40 - Écologie végétale, F70 - Taxonomie végétale et phytogéographie, forêt tropicale, arbre forestier, densité, cartographie, flore, forêt tropicale humide, déboisement, forêt, espèce en danger, écologie forestière, http://aims.fao.org/aos/agrovoc/c_24904, http://aims.fao.org/aos/agrovoc/c_3052, http://aims.fao.org/aos/agrovoc/c_2186, http://aims.fao.org/aos/agrovoc/c_1344, http://aims.fao.org/aos/agrovoc/c_2983, http://aims.fao.org/aos/agrovoc/c_7976, http://aims.fao.org/aos/agrovoc/c_15590, http://aims.fao.org/aos/agrovoc/c_3062, http://aims.fao.org/aos/agrovoc/c_2557, http://aims.fao.org/aos/agrovoc/c_3044, http://aims.fao.org/aos/agrovoc/c_32372, http://aims.fao.org/aos/agrovoc/c_3081, http://aims.fao.org/aos/agrovoc/c_3093, http://aims.fao.org/aos/agrovoc/c_1070, http://aims.fao.org/aos/agrovoc/c_3445,
Online Access:	http://agritrop.cirad.fr/608358/ http://agritrop.cirad.fr/608358/1/608358.pdf
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