1. Plant functional traits have globally consistent effects on competition.

    Nature 529(7585):204 (2016) PMID 26700807

    Phenotypic traits and their associated trade-offs have been shown to have globally consistent effects on individual plant physiological functions, but how these effects scale up to influence competition, a key driver of community assembly in terrestrial vegetation, has remained unclear. Here we ...
  2. Taxonomic and functional composition of arthropod assemblages across contrasting Amazonian forests.

    Journal of Animal Ecology 85(1):227 (2016) PMID 26346553

    Arthropods represent most of global biodiversity, with the highest diversity found in tropical rain forests. Nevertheless, we have a very incomplete understanding of how tropical arthropod communities are assembled. We conducted a comprehensive mass sampling of arthropod communities within three...
  3. A cuckoo-like parasitic moth leads African weaver ant colonies to their ruin.

    Scientific reports 6:23778 (2016) PMID 27021621 PMCID PMC4810499

    In myrmecophilous Lepidoptera, mostly lycaenids and riodinids, caterpillars trick ants into transporting them to the ant nest where they feed on the brood or, in the more derived "cuckoo strategy", trigger regurgitations (trophallaxis) from the ants and obtain trophic eggs. We show for the first...
  4. Rapid tree carbon stock recovery in managed Amazonian forests

    Current Biology 25(20):2738 (2015)

  5. Bat aggregation mediates the functional structure of ant assemblages.

    Comptes Rendus Biologies 338(10):688 (2015) PMID 26302832

    In the Guianese rainforest, we examined the impact of the presence of guano in and around a bat roosting site (a cave). We used ant communities as an indicator to evaluate this impact because they occupy a central place in the functioning of tropical rainforest ecosystems and they play different...
  6. Rapid tree carbon stock recovery in managed Amazonian forests.

    Current Biology 25(18):R787 (2015) PMID 26394096

    While around 20% of the Amazonian forest has been cleared for pastures and agriculture, one fourth of the remaining forest is dedicated to wood production. Most of these production forests have been or will be selectively harvested for commercial timber, but recent studies show that even soon af...
  7. 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...
  8. Spatial Structure of Above-Ground Biomass Limits Accuracy of Carbon Mapping in Rainforest but Large Scale Forest Inventories Can Help to Overcome.

    PLoS ONE 10(9):e0138456 (2015) PMID 26402522 PMCID PMC4581701

    Precise mapping of above-ground biomass (AGB) is a major challenge for the success of REDD+ processes in tropical rainforest. The usual mapping methods are based on two hypotheses: a large and long-ranged spatial autocorrelation and a strong environment influence at the regional scale. However, ...
  9. 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...
  10. 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. ...
  11. 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...
  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. A Tank Bromeliad Favors Spider Presence in a Neotropical Inundated Forest.

    PLoS ONE 9(12):e114592 (2014) PMID 25494055 PMCID PMC4262423

    Tank bromeliads are good models for understanding how climate change may affect biotic associations. We studied the relationships between spiders, the epiphytic tank bromeliad, Aechmea bracteata, and its associated ants in an inundated forest in Quintana Roo, Mexico, during a drought period whil...
  16. 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...
  17. 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...
  18. Efficacy ofBagassa guianensisAubl. extract against wood decay and human pathogenic fungi

    International Biodeterioration & Biodegradation 70:55 (2012)

    Extractives that provide natural resistance to Bagassa guianensis Aubl. heartwood were examined. Soil-bed tests showed that the B. guianensis heartwood resistance was significantly reduced after ethyl acetate extraction, whereas methanol and especially water extractions improved the re...
  19. Water availability is the main climate driver of neotropical tree growth.

    PLoS ONE 7(4):e34074 (2012) PMID 22506012 PMCID PMC3323616

    • Climate models for the coming century predict rainfall reduction in the Amazonian region, including change in water availability for tropical rainforests. Here, we test the extent to which climate variables related to water regime, temperature and irradiance shape the growth trajectories of ne...
  20. Leaf functional response to increasing atmospheric CO(2) concentrations over the last century in two northern Amazonian tree species: a historical δ(13) C and δ(18) O approach using herbarium samples.

    Plant, Cell & Environment 34(8):1332 (2011) PMID 21486302

    We assessed the extent of recent environmental changes on leaf morphological (stomatal density, stomatal surface, leaf mass per unit area) and physiological traits (carbon isotope composition, δ(13)C(leaf) , and discrimination, Δ(13)C(leaf) , oxygen isotope composition, δ(18)O(leaf) ) of two tro...