DyAFor - Dynamics and community assembly of tropical forests

Keywords
Community ecology
Functional ecology
Forest dynamics

Our main objective is to improve our understanding of tree community dynamics and assembly in tropical forests, in order to predict their potential future under different global change scenarios.

Using a diversity of tools from different fields (e.g. ecophysiology, genomics, remote sensing, modelling) in various environmental and anthropogenic contexts across the tropics, we provide evidence-based knowledge on the mechanisms that shape the temporal and spatial variability of the diversity, structure, and functioning of tropical forests.
To this end, we use three complementary approaches: i) the implementation of experiments that allow to empirically control variables or processes of interest in order to understand their effects; ii) the collection of field observations to document existing patterns and inform their underlying processes using statistical frameworks; iii) the development of models to assimilate various data and evaluate empirical knowledge on processes and their interactions. The integration of these three mutually-informative approaches allows to identify the spatial and temporal scales at which ecological and evolutionary processes act and interact in shaping the dynamics and assembly of tropical forests, and improve our ability to predict the fate of tropical forests with increasing anthropogenic pressure and climate stress. Our work focuses mainly on plants, but can also integrate other trophic levels (e.g. herbivores and micro-organisms) that play a key role in certain processes, such as the maintenance of local diversity through negative density dependence, or carbon and nutrient fluxes through decomposition.

Our multidisciplinary team develops research projects in South America (French Guiana, Peru and Ecuador), Central Africa (Cameroon, Gabon, Congo, Sao Tome and Principe, and DR Congo), Asia (India and Thailand) and the Pacific (New Caledonia and Pacific islands), thus opening up perspectives for regional syntheses and intercontinental comparisons across the tropics. In each of these projects, we rely in particular on networks of permanent forest plots et up and monitored by ourselves and our collaborators in French Guiana (Guyadiv), Central Africa (Africadiv) and New Caledonia (NC-PIPPN). These networks represent c. 850 plots of 100 m2 up to 1 ha and c. 200,000 inventoried trees. We also leverage data from large international networks, such as the Amazon Tree Diversity Network or ForestGeo. Some projects benefit from collaborative research infrastructures, such as LabEx CEBA in French Guiana, LMI BioInca in Ecuador and Colombia, or LMI DYCOFAC in Central Africa. Our group regularly goes in the field on short trips or long stays (e.g. expats), thus ensuring the long-term maintenance of field set-ups and local collaborative networks

Acronym Title Duration
ADMIREPartenariat pour l’Analyse des DynaMIques de REforestation et de la résilience forestière (ADMIRE)
Project PI: Philippe BIRNBAUM 
2021 - 2024
AFRIFIREDéterminants et impacts du régime des feux en Afrique tropicale
Project PI: Charly FAVIER (ISEM)  / Maxime REJOU-MECHAIN 
2021 - 2022
CartoDiv-DendroLidarReconnaissance spécifique et cartographie des arbres de la canopée en forêt tropicale ET télédétection individu centrée pour l'évaluation de la ressource en bois d'œuvre en Guyane française
Project PI: Grégoire VINCENT 
2017 - 2021
DeepRootInto the deep: exploring root distribution and function in tropical forests.
Project PI: Claire FORTUNEL / Isabelle MARECHAUX 
2019 - 2021
DESSFORDegraded Stable States in Tropical Forests
Project PI: Maxime REJOU-MECHAIN 
2021 - 2024
DREAMDrought recovery mechanisms in a tropical forest
Project PI: Megan BARTLETT (University of California Davis)  
2019 - 2021
ELFRole of local evolutionary history on tropical forest diversity and functioning
Project PI: Imma OLIVERAS (University of Oxford)  / Claire FORTUNEL 
2021 - 2021
INTRACOUnravelling the role of intraspecific variability in tree species coexistence in tropical forest
Project PI: Ghislain VIEILLEDENT / Isabelle MARECHAUX 
2020 - 2022
ISLETSIsland leaf economics trait synthesis
Project PI: Kasey BARTON (University of Hawaiʻi at Mānoa)  / Claire FORTUNEL 
2021 - 2022
Leaf and wood dimensionsLeaf and wood dimensions: Understanding topical forest diversity by integrating data and mechanistic models
Project PI: Claire FORTUNEL / Caroline FARRIOR (UTA)  
2019 - 2021
ManagForResEffet de la gestion forestière sur la réponse des écosystèmes forestiers guyanais aux changements climatiques
Project PI: Géraldine DERROIRE (CIRAD, ECOFOG)  
2020 - 2022
METRADICAMechanistic traits to predict shifts in tree species abundance and distribution with climate change in the Amazonian forest
Project PI: Ghislain VIEILLEDENT / Clément STAHL (INRAE, ECOFOG)  
2020 - 2022
PEPINOHistorical genomics of long-term PEople-Palm Interactions in the NeotrOpics
Project PI: Louise BROUSSEAU / Guillaume ODONNE (CNRS, UMSR LEEISA)  
2019 - 2021
PhenobsTowards a phenology observatory in French Guiana to study climate-vegetation feedbacks and the diversity of plant strategies
Project PI: Nicolas BARBIER 
2020 - 2022
ReliquesFragmentation des forets sur substrats ultramafiques en Nouvelle Calédonie
Project PI: Philippe BIRNBAUM / Nicolas BARBIER 
2019 - 2022
Tall TreesA 3D perspective on the effects of topography and wind on forest height and dynamics
Project PI: David COOMES (Cambridge University)  
2019 - 2023
UnderstoryAn infrastructure to explore plant diversity of the Amazonian forest understory
Project PI: Géraldine DERROIRE (CIRAD, ECOFOG)  / Jérôme CHAVE (EDB, Toulouse)  
2020 - 2022

BADOURDINE Colette 2019 - 2022. Mapping tropical forest diversity from multi- and hyper-spectral imagery. Ecole doctorale : GAIA / Université de Montpellier. Dir : PELISSIER Raphaël / Co-dir. : VINCENT Grégoire

CLEMENT Jeanne 2021 - 2023. Prédire la vulnérabilité des espèces d’arbres au changement climatique en forêt Guyanaise via l’utilisation de modèles joints de distribution des espèces.". Ecole doctorale : GAIA / Université de Montpellier. Dir : COUTERON Pierre / Co-dir. : VIEILLEDENT Ghislain

CRUZ MALDONADO Nereyda-Nathalie 2017 - 2021. Réponses des communautés de plantes aux changements globaux entre des régions alpines tropicales et tempérées. Ecole doctorale : GAIA / Université de Montpellier. Dir : ANTHELME Fabien

EVOUNA ONDO Fidèle 2018 - 2023. Rôle du feu et l'écologie du sol dans l'évolution des savanes au Gabon. Ecole doctorale : GAIA / Université de Montpellier. Dir : COUTERON Pierre

GIRARD-TERCIEUX Camille 2019 - 2022. Rôle de la variabilité intraspécifique dans la coexistence des espèces de la forêt tropicale. Ecole doctorale : GAIA / Université de Montpellier. Dir : PELISSIER Raphaël

KACAMAK Asli Begum 2020 - 2023. Stratégies écologiques des lianes africaines en milieu stable et perturbé : des modèles bio-inspirants pour la robotique douce.. Ecole doctorale : GAIA / Université de Montpellier. Dir : ROWE Nicholas / Co-dir. : ROSSI Vivien

KREBBER Daniela 2019 - 2022. Comment la biodiversité influence-t-elle la réponse des forêts tropicales aux changements climatiques et aux perturbations anthropiques ?. Ecole doctorale : GAIA / Université de Guyane. Dir : MARCON Eric

PhD

2020

Theses

auteur
Dimitri Justeau-Allaire
titre
Constraint-based systematic conservation planning, a generic and expressive approach. Application to decision support in the conservation of New Caledonian forests.
article
Biodiversity and Ecology. Université de Montpellier, 2020. English
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Articles

Publications HAL de la collection AMAP

2021

Journal articles

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Louise Brousseau, Paul V.A. Fine, Erwin Dreyer, Giovanni Vendramin, Ivan Scotti. Genomic and phenotypic divergence unveil microgeographic adaptation in the Amazonian hyperdominant tree Eperua falcata Aubl. (Fabaceae). Molecular Ecology, Wiley, 2021, 30 (5), pp.1136-1154. ⟨10.1111/mec.15595⟩. ⟨hal-02930429⟩
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Dimitri Justeau-Allaire, Ghislain Vieilledent, Nicolas Rinck, Philippe Vismara, Xavier Lorca, et al.. Constrained optimization of landscape indices in conservation planning to support ecological restoration in New Caledonia. Journal of Applied Ecology, Wiley, 2021, 58 (4), pp.744-754. ⟨10.1111/1365-2664.13803⟩. ⟨hal-03030515⟩
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Grace Jopaul Loubota Panzou, Adeline Fayolle, Tommaso Jucker, Oliver Phillips, Stephanie Bohlman, et al.. Pantropical variability in tree crown allometry. Global Ecology and Biogeography, Wiley, 2021, 30 (2), pp.459-475. ⟨10.1111/geb.13231⟩. ⟨hal-03103872⟩
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Mario Tagliari, Carolina Levis, Bernardo Flores, Graziela Blanco, Carolina Freitas, et al.. Collaborative management as a way to enhance Araucaria Forest resilience. Perspectives in Ecology and Conservation, In press, ⟨10.1016/j.pecon.2021.03.002⟩. ⟨hal-03191988⟩
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C. Vancutsem, F Achard, J.-F. Pekel, Ghislain Vieilledent, S. Carboni, et al.. Long-term (1990-2019) monitoring of forest cover changes in the humid tropics. Science Advances , American Association for the Advancement of Science (AAAS), 2021, 7 (10), ⟨10.1126/sciadv.abe1603⟩. ⟨hal-03163130⟩
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Ghislain Vieilledent. forestatrisk: a Python package for modelling and forecasting deforestation in the tropics. Journal of Open Source Software, Open Journals, 2021, 6 (59), pp.2975. ⟨10.21105/joss.02975⟩. ⟨hal-03162430v2⟩
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2020

Journal articles

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Grégoire Blanchard, Philippe Birnbaum, François Munoz. Extinction–immigration dynamics lag behind environmental filtering in shaping the composition of tropical dry forests within a changing landscape. Ecography, Wiley, 2020, 43 (6), pp.869-881. ⟨10.1111/ecog.04870⟩. ⟨hal-02512987⟩
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Stéphanie Bodin, Jean-François Molino, Guillaume Odonne, Laurent Bremond. Unraveling pre-Columbian occupation patterns in the tropical forests of French Guiana using an anthracological approach. Vegetation History and Archaeobotany, Springer Verlag, 2020, 29 (5), pp.567-580. ⟨10.1007/s00334-019-00767-w⟩. ⟨hal-02441094⟩
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Jérôme Chave, Camille Piponiot, Isabelle Maréchaux, Hubert de Foresta, Denis Larpin, et al.. Slow rate of secondary forest carbon accumulation in the Guianas compared with the rest of the Neotropics. Ecological Applications, Ecological Society of America, 2020, 30 (1), pp.e02004. ⟨10.1002/eap.2004⟩. ⟨hal-02309463⟩
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Léo-Paul Dagallier, Steven Janssens, Gilles Dauby, Anne Blach-Overgaard, Barbara Mackinder, et al.. Cradles and museums of generic plant diversity across tropical Africa. New Phytologist, Wiley, 2020, 225 (5), pp.2196-2213. ⟨10.1111/nph.16293⟩. ⟨hal-02407084⟩
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https://hal.umontpellier.fr/hal-02407084/file/Dauby_etal_New_Phytol_2019.pdf BibTex
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Boris Demenou, Jérémy Migliore, Myriam Heuertz, Franck Monthe, Dario Ojeda, et al.. Plastome phylogeography in two African rain forest legume trees reveals that Dahomey Gap populations originate from the Cameroon volcanic line. Molecular Phylogenetics and Evolution, Elsevier, 2020, 150, pp.1-12. ⟨10.1016/j.ympev.2020.106854⟩. ⟨hal-02893119⟩
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Adriane Esquivel-Muelbert, Oliver Phillips, Roel Brienen, Sophie Fauset, Martin Sullivan, et al.. Tree mode of death and mortality risk factors across Amazon forests. Nature Communications, Nature Publishing Group, 2020, 11 (1), ⟨10.1038/s41467-020-18996-3⟩. ⟨hal-03005990⟩
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Claire Fortunel, Clement Stahl, Patrick Heuret, Eric Nicolini, Christopher Baraloto. Disentangling the effects of environment and ontogeny on tree functional dimensions for congeneric species in tropical forests. New Phytologist, Wiley, 2020, 226 (2), pp.385-395. ⟨10.1111/nph.16393⟩. ⟨hal-02448421⟩
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C. Grinand, Ghislain Vieilledent, T. Razafimbelo, J.R. Rakotoarijaona, M. Nourtier, et al.. Landscape‐scale spatial modelling of deforestation, land degradation and regeneration using machine learning tools. Land Degradation and Development, Wiley, 2020, 31 (13), pp.1699-1712. ⟨10.1002/ldr.3526⟩. ⟨hal-02443462⟩
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Myriam Heuertz, Henri Caron, Caroline Scotti-Saintagne, Pascal Petronelli, Julien Engel, et al.. The hyperdominant tropical tree Eschweilera coriacea (Lecythidaceae) shows higher genetic heterogeneity than sympatric Eschweilera species in French Guiana. Plant Ecology and Evolution, Botanic Garden Meise and Royal Botanical Society of Belgium, 2020, 153 (1), pp.67-81. ⟨10.5091/plecevo.2020.1565⟩. ⟨hal-02536332⟩
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Thomas Ibanez, Gunnar Keppel, Cléudia Baider, Chris Birkinshaw, F.B. Vincent Florens, et al.. Tropical cyclones and island area shape species abundance distributions of local tree communities. Oikos, Nordic Ecological Society, In press, 129 (12), pp.1856-1866. ⟨10.1111/oik.07501⟩. ⟨hal-02965358⟩
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John Katembo, Moses Libalah, Faustin Boyemba, Gilles Dauby, Nicolas Barbier. Multiple Stable Dominance States in the Congo Basin Forests. Forests, MDPI, 2020, 11 (5), pp.553. ⟨10.3390/f11050553⟩. ⟨hal-02586110⟩
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Anthony Laybros, Mélaine Aubry-Kientz, Jean-Baptiste Feret, Caroline Bedeau, Olivier Brunaux, et al.. Quantitative Airborne Inventories in Dense Tropical Forest Using Imaging Spectroscopy. Remote Sensing, MDPI, 2020, 12 (10), pp.1577. ⟨10.3390/rs12101577⟩. ⟨hal-02618684⟩
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Isabelle Maréchaux, Laurent Saint‐andré, Megan Bartlett, Lawren Sack, Jerome Chave. Leaf drought tolerance cannot be inferred from classic leaf traits in a tropical rainforest. Journal of Ecology, Wiley, 2020, 108 (3), pp.1030-1045. ⟨10.1111/1365-2745.13321⟩. ⟨hal-02394283⟩
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Anand Osuri, Siddarth Machado, Jayashree Ratnam, Mahesh Sankaran, N. Ayyappan, et al.. Tree diversity and carbon storage cobenefits in tropical human-dominated landscapes. Conservation Letters, Wiley, 2020, 13 (2), pp.e12699. ⟨10.1111/conl.12699⟩. ⟨hal-02443335⟩
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Robin Pouteau, Santiago Trueba, Sandrine Isnard. Retracing the contours of the early angiosperm environmental niche. Annals of Botany, Oxford University Press (OUP), 2020, 125 (1), pp.49-57. ⟨10.1093/aob/mcz131⟩. ⟨hal-02277290⟩
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Kaina Privet, Vincent Vedel, Claire Fortunel, Jérôme Orivel, Quentin Martinez, et al.. Relative Efficiency of Pitfall Trapping vs. Nocturnal Hand Collecting in Assessing Soil-Dwelling Spider Diversity along A Structural Gradient of Neotropical Habitats. Diversity, MDPI, 2020, 12 (2), pp.81. ⟨10.3390/d12020081⟩. ⟨hal-02529839⟩
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Heidy Schimann, Jason Vleminckx, Christopher Baraloto, Julien Engel, Gaëlle Jaouen, et al.. Tree communities and soil properties influence fungal community assembly in neotropical forests. Biotropica, Wiley, 2020, 52 (3), pp.444-456. ⟨10.1111/btp.12747⟩. ⟨hal-02502383⟩
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Sylvain Schmitt, Isabelle Maréchaux, Jérôme Chave, Fabian Jörg Fischer, Camille Piponiot, et al.. Functional diversity improves tropical forest resilience: Insights from a long‐term virtual experiment. Journal of Ecology, Wiley, 2020, 108 (3), pp.831-841. ⟨10.1111/1365-2745.13320⟩. ⟨hal-02394908⟩
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Martin Sullivan, Simon Lewis, Kofi Affum-Baffoe, Carolina Castilho, Flávia Costa, et al.. Long-term thermal sensitivity of Earth’s tropical forests. Science, American Association for the Advancement of Science, 2020, 368 (6493), pp.869-874. ⟨10.1126/science.aaw7578⟩. ⟨hal-02650649⟩
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Hans ter Steege, Paulo Prado, Renato de Lima, Edwin Pos, Diogenes de Andrade, et al.. Biased-corrected richness estimates for the Amazonian tree flora. Scientific Reports, Nature Publishing Group, 2020, 10, pp.10130. ⟨10.1038/s41598-020-66686-3⟩. ⟨hal-02883980⟩
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Niklas Tysklind, Marie-Pierre Etienne, Caroline Scotti-Saintagne, Alexandra Tinaut, Maxime Casalis, et al.. Microgeographic local adaptation and ecotype distributions: The role of selective processes on early life‐history traits in sympatric, ecologically divergent Symphonia populations. Ecology and Evolution, Wiley Open Access, 2020, 10 (19), pp.10735-10753. ⟨10.1002/ece3.6731⟩. ⟨hal-02948828⟩
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Boniface Tientcheu Yogom, Marie-Louise Avana-Tientcheu, Marcelle Franca Meguem Mboujda, Stephane Momo Takoudjou, Théophile Fonkou, et al.. Ethnicity Differences in Uses and Management Practices of Bitter Kola Trees (Garcinia kola) in Cameroon. Economic Botany, Springer Verlag, In press, ⟨10.1007/s12231-020-09508-x⟩. ⟨hal-03011883⟩
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Jenny Zembrano, Norbert J. Codeiro, Carol Garzon-Lopez, Lauren Yeager, Claire Fortunel, et al.. Investigating the direct and indirect effects of forest fragmentation on plant functional diversity. PLoS ONE, Public Library of Science, 2020, 15 (7), pp.e0235210. ⟨10.1371/journal.pone.0235210⟩. ⟨hal-02929062⟩
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