CESABINARs, which are held in English on Zoom, last approximately one hour: 40 minutes are dedicated to the presentation, followed by 20 minutes of discussion for questions and deeper exploration of the topics covered.
Here, you will find all the information about the upcoming CESABINAR as well as information and recordings of previous sessions.
We look forward to seeing you on Zoom!
NEXT CESABINAR
We are very pleased to announce our next online CESABINAR, which will take place on Thursday 11th of June, 3:00 – 4:00 pm (CST) and will present the work of the INTRACO group.
Meeting ID: 819 8176 0168
Intraco: Unravelling the role of intraspecific variability in tree species coexistence in tropical forest
Hundreds of tree species can coexist within a single hectare of tropical forest. Several mechanisms have been proposed to explain how so many species can stably coexist while competing for a limited number of resources (mainly light, water, and nutrients). Among these mechanisms, the role of intraspecific variability (IV), which is large in tree communities, has only been recently considered. Studies that have so far explored the effect of IV on species coexistence focused on species-poor systems, used disparate approaches, and reached contrasting results. IV can result from genetic variability and could make species less different, hindering their stable coexistence. A different view is that observed IV is primarily the result of fine-scale environmental variability and could reveal differences among species on unobserved dimensions, promoting species coexistence. INTRACO proposes to provide a clear synthesis of the effect of IV on species coexistence in hyperdiverse communities combining literature review, empirical data-set analyses, and both theoretical and data-based models. Our results will help understand and predict changes in biodiversity in a global change context.
Key Publications
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Girard-Tercieux C., G. Vieilledent, A. T. Clark, J. S. Clark, B. Courbaud, C. Fortunel, G. Kunstler, R. Pélissier, N. Rüger, and I. Maréchaux. 2024. Beyond variance: simple random distributions are not
a good proxy for intraspecific variability in systems with environmental structure. Peer Community Journal, section Ecology. 4:e28. doi:10.24072/pcjournal.360 -
Girard-Tercieux C., I. Maréchaux, A. T. Clark, J. S. Clark, B. Courbaud, C. Fortunel, J. Guillemot, G. Kunstler, G. le Maire, R. Pélissier, N. Rüger, and G. Vieilledent. 2023. Rethinking the nature of
intraspecific variability and its consequences on species coexistence. Ecology and Evolution. 13 (3):
e9860. doi:10.1002/ece3.9860 -
Clark J. S., A. T. Clark, B. Courbaud, C. Fortunel, C. Girard-Tercieux, G. Kunstler, I. Maréchaux, N. Rüger, and G. Vieilledent. 2022. A universal coexistence hypothesis resolves the biodiversity paradox:
Species differences that generate diverse forests. Authorea: au.166029509.96486640/v1
A project in partnership with the synthesis center

![[Call for proposals FRB-CESAB 2026]](https://www.fondationbiodiversite.fr/wp-content/uploads/2020/09/AAP_BLANC_2020_web.jpg)
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