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Evolutionary diversity is associated with wood productivity in Amazonian forests

2019; Nature Portfolio; Volume: 3; Issue: 12 Linguagem: Inglês

10.1038/s41559-019-1007-y

2397-334X

Fernanda Coelho de Souza, Kyle G. Dexter, Oliver L. Phillips, R. Toby Pennington, Danilo M. Neves, Martin J. P. Sullivan, Esteban Álvarez‐Dávila, Atila Indalecio Marques Alves, Iêda Leão do Amaral, Ana Andrade, Luis E. O. C. Aragao, Alejandro Araujo‐Murakami, E.J.M.M. Arets, L. Arroyo, Gerardo A. Aymard C., Olaf Bánki, Christopher Baraloto, Jorcely Barroso, René Boot, Roel Brienen, Foster Brown, José Luís Camargo, Wendeson Castro, Jérôme Chave, Álvaro Cogollo, James A. Comiskey, Fernando Cornejo‐Valverde, Antonio Lola da Costa, Plínio Barbosa de Camargo, Anthony Di Fiore, Ted R. Feldpausch, David Galbraith, Emanuel Gloor, Rosa C. Goodman, Martin Gilpin, Rafael Herrera, Níro Higuchi, Eurídice N. Honorio Coronado, E. Jiménez, Timothy J. Killeen, Susan G. W. Laurance, Susan G. W. Laurance, Gabriela López‐González, Thomas Ε. Lovejoy, Yadvinder Malhi, Beatriz Schwantes Marimon, Ben Hur Marimon, Casimiro Mendoza, Abel Monteagudo‐Mendoza, David Neill, Percy Núñez Vargas, María Cristina Peñuela Mora, Georgia Pickavance, John J. Pipoly, Nigel C. A. Pitman, Lourens Poorter, Adriana Prieto, Freddy Ramírez, Anand Roopsind, Agustín Rudas, Rafael P. Salomão, Natalino Silva, Marcos Silveira, James Singh, Juliana Stropp, Hans ter Steege, John Terborgh, Raquel Thomas‐Caesar, Ricardo Keichi Umetsu, Rodolfo Vásquez, Ima Célia-Vieira, Simone Aparecida Vieira, Vincent Antoine Vos, Roderick Zagt, Timothy R. Baker,

Forest ecology and management

Higher levels of taxonomic and evolutionary diversity are expected to maximize ecosystem function, yet their relative importance in driving variation in ecosystem function at large scales in diverse forests is unknown. Using 90 inventory plots across intact, lowland, terra firme, Amazonian forests and a new phylogeny including 526 angiosperm genera, we investigated the association between taxonomic and evolutionary metrics of diversity and two key measures of ecosystem function: aboveground wood productivity and biomass storage. While taxonomic and phylogenetic diversity were not important predictors of variation in biomass, both emerged as independent predictors of wood productivity. Amazon forests that contain greater evolutionary diversity and a higher proportion of rare species have higher productivity. While climatic and edaphic variables are together the strongest predictors of productivity, our results show that the evolutionary diversity of tree species in diverse forest stands also influences productivity. As our models accounted for wood density and tree size, they also suggest that additional, unstudied, evolutionarily correlated traits have significant effects on ecosystem function in tropical forests. Overall, our pan-Amazonian analysis shows that greater phylogenetic diversity translates into higher levels of ecosystem function: tropical forest communities with more distantly related taxa have greater wood productivity. Inventory data from 90 lowland Amazonian forest plots and a phylogeny of 526 angiosperm genera were used to show that taxonomic and phylogenetic diversity are both predictive of wood productivity but not of biomass variation.