1. A joint individual-based model coupling growth and mortality reveals that tree vigor is a key component of tropical forest dynamics.

    Ecology and Evolution 5(12):2457 (2015) PMID 26120434 PMCID PMC4475377

    Tree vigor is often used as a covariate when tree mortality is predicted from tree growth in tropical forest dynamic models, but it is rarely explicitly accounted for in a coherent modeling framework. We quantify tree vigor at the individual tree level, based on the difference between expected a...
  2. Hyperdominance in Amazonian forest carbon cycling.
    Sophie Fauset, Michelle O Johnson, Manuel Gloor, Timothy R Baker, Abel Monteagudo, Roel J W Brienen, Ted R Feldpausch, Gabriela Lopez-Gonzalez, Yadvinder Malhi, Hans ter Steege, Nigel C A Pitman, Christopher Baraloto, Julien Engel, Pascal Pétronelli, Ana Andrade, José Luís Camargo, Susan G W Laurance, William F Laurance, Jerôme Chave, Elodie Allie, Percy Núñez Vargas, John W Terborgh, Kalle Ruokolainen, Marcos Silveira, Gerardo Aymard C, Luzmila Arroyo, Damien Bonal, Hirma Ramirez-Angulo, Alejandro Araujo-Murakami, David Neill, Bruno Hérault, Aurélie Dourdain, Armando Torres-Lezama, Beatriz S Marimon, Rafael P Salomão, James A Comiskey, Maxime Réjou-Méchain, Marisol Toledo, Juan Carlos Licona, Alfredo Alarcón, Adriana Prieto, Agustín Rudas, Peter J van der Meer, Timothy J Killeen, Ben-Hur Marimon Junior, Lourens Poorter, Rene G A Boot, Basil Stergios, Emilio Vilanova Torre, Flávia R Costa, Carolina Levis, Juliana Schietti, Priscila Souza, Nikée Groot, Eric Arets, Victor Chama Moscoso, Wendeson Castro, Euridice N Honorio Coronado, Marielos Peña-Claros, Clement Stahl, Jorcely Barroso, Joey Talbot, Ima Célia Guimarães Vieira, Geertje van der Heijden, Raquel Thomas, Vincent A Vos, Everton C Almeida, Esteban Álvarez Davila, Luiz E O C Aragão, Terry L Erwin, Paulo S Morandi, Edmar Almeida de Oliveira, Marco B X Valadão, Roderick J Zagt, Peter van der Hout, Patricia Alvarez Loayza, John Pipoly, Ophelia Wang, Miguel Alexiades, Carlos E Cerón, Isau Huamantupa-Chuquimaco, Anthony Di Fiore, Julie Peacock, Nadir Pallqui Camacho, Ricardo K Umetsu, Plínio Barbosa de Camargo, Robyn J Burnham, Rafael Herrera, Carlos A Quesada, Juliana Stropp, Simone A Vieira, Marc Steininger, Carlos Reynel Rodríguez, Zorayda Restrepo, Adriane Esquivel Muelbert, Simon Lewis, Georgia C Pickavance, and Oliver L Phillips

    Nature Communications 6:6857 (2015) PMID 25919449 PMCID PMC4423203

    While Amazonian forests are extraordinarily diverse, the abundance of trees is skewed strongly towards relatively few 'hyperdominant' species. In addition to their diversity, Amazonian trees are a key component of the global carbon cycle, assimilating and storing more carbon than any other ecosy...
  3. Vertical stratification reduces competition for light in dense tropical forests

    Forest Ecology and Management 329:79 (2014)

    • We model individual tree growth variation in a French Guiana tropical forest. • We quantify the overall importance of species, light and local crowding. ...
  4. Vertical stratification reduces competition for light in dense tropical forests

    Forest Ecology and Management 329:79 (2014)

    • We model individual tree growth variation in a French Guiana tropical forest. • We quantify the overall importance of species, light and local crowding. ...
  5. Vertical stratification reduces competition for light in dense tropical forests

    Forest Ecology and Management 329:79 (2014)

    • We model individual tree growth variation in a French Guiana tropical forest. • We quantify the overall importance of species, light and local crowding. ...
  6. Vertical stratification reduces competition for light in dense tropical forests

    Forest Ecology and Management 329:79 (2014)

    • We model individual tree growth variation in a French Guiana tropical forest. • We quantify the overall importance of species, light and local crowding. ...
  7. Estimating tropical tree diversity indices from forestry surveys: A method to integrate taxonomic uncertainty

    Forest Ecology and Management 328:270 (2014)

    • The taxonomic reliability of forestry surveys was tested in French Guiana rainforest. • The reliability was only 22% at species rank, 70% at genus and 83% at fam...
  8. Estimating tropical tree diversity indices from forestry surveys: A method to integrate taxonomic uncertainty

    Forest Ecology and Management 328:270 (2014)

    • The taxonomic reliability of forestry surveys was tested in French Guiana rainforest. • The reliability was only 22% at species rank, 70% at genus and 83% at fam...
  9. Vertical stratification reduces competition for light in dense tropical forests

    Forest Ecology and Management (2014)

    • We model individual tree growth variation in a French Guiana tropical forest. • We quantify the overall importance of species, light and local crowding. ...
  10. Generalization of the partitioning of shannon diversity.

    PLoS ONE 9(3):e90289 (2014) PMID 24603966 PMCID PMC3946064

    Traditional measures of diversity, namely the number of species as well as Simpson's and Shannon's indices, are particular cases of Tsallis entropy. Entropy decomposition, i.e. decomposing gamma entropy into alpha and beta components, has been previously derived in the literature. We propose a g...
  11. Pan-tropical analysis of climate effects on seasonal tree growth.

    PLoS ONE 9(3):e92337 (2014) PMID 24670981 PMCID PMC3966775

    Climate models predict a range of changes in tropical forest regions, including increased average temperatures, decreased total precipitation, reduced soil moisture and alterations in seasonal climate variations. These changes are directly related to the increase in anthropogenic greenhouse gas ...
  12. Generalization of the partitioning of shannon diversity.

    PLoS ONE 9(3):e90289 (2014) PMID 24603966 PMCID PMC3946064

    Traditional measures of diversity, namely the number of species as well as Simpson's and Shannon's indices, are particular cases of Tsallis entropy. Entropy decomposition, i.e. decomposing gamma entropy into alpha and beta components, has been previously derived in the literature. We propose a g...
  13. Functional traits help predict post-disturbance demography of tropical trees.

    PLoS ONE 9(9):e105022 (2014) PMID 25226586 PMCID PMC4165593

    How tropical tree species respond to disturbance is a central issue of forest ecology, conservation and resource management. We define a hierarchical model to investigate how functional traits measured in control plots relate to the population change rate and to demographic rates for recruitment...
  14. Pan-tropical analysis of climate effects on seasonal tree growth.

    PLoS ONE 9(3):e92337 (2014) PMID 24670981 PMCID PMC3966775

    Climate models predict a range of changes in tropical forest regions, including increased average temperatures, decreased total precipitation, reduced soil moisture and alterations in seasonal climate variations. These changes are directly related to the increase in anthropogenic greenhouse gas ...
  15. Generalization of the partitioning of shannon diversity.

    PLoS ONE 9(3):e90289 (2014) PMID 24603966 PMCID PMC3946064

    Traditional measures of diversity, namely the number of species as well as Simpson's and Shannon's indices, are particular cases of Tsallis entropy. Entropy decomposition, i.e. decomposing gamma entropy into alpha and beta components, has been previously derived in the literature. We propose a g...
  16. Functional traits help predict post-disturbance demography of tropical trees.

    PLoS ONE 9(9):e105022 (2014) PMID 25226586 PMCID PMC4165593

    How tropical tree species respond to disturbance is a central issue of forest ecology, conservation and resource management. We define a hierarchical model to investigate how functional traits measured in control plots relate to the population change rate and to demographic rates for recruitment...
  17. Depth of soil water uptake by tropical rainforest trees during dry periods: does tree dimension matter?

    Oecologia 173(4):1191 (2013) PMID 23852028

    Though the root biomass of tropical rainforest trees is concentrated in the upper soil layers, soil water uptake by deep roots has been shown to contribute to tree transpiration. A precise evaluation of the relationship between tree dimensions and depth of water uptake would be useful in tree-ba...
  18. Depth of soil water uptake by tropical rainforest trees during dry periods: does tree dimension matter?

    Oecologia 173(4):1191 (2013) PMID 23852028

    Though the root biomass of tropical rainforest trees is concentrated in the upper soil layers, soil water uptake by deep roots has been shown to contribute to tree transpiration. A precise evaluation of the relationship between tree dimensions and depth of water uptake would be useful in tree-ba...
  19. Toward trait-based mortality models for tropical forests.

    PLoS ONE 8(5):e63678 (2013) PMID 23675500 PMCID PMC3652824

    Tree mortality in tropical forests is a complex ecological process for which modelling approaches need to be improved to better understand, and then predict, the evolution of tree mortality in response to global change. The mortality model introduced here computes an individual probability of dy...
  20. Toward trait-based mortality models for tropical forests.

    PLoS ONE 8(5):e63678 (2013) PMID 23675500 PMCID PMC3652824

    Tree mortality in tropical forests is a complex ecological process for which modelling approaches need to be improved to better understand, and then predict, the evolution of tree mortality in response to global change. The mortality model introduced here computes an individual probability of dy...