Research

Past and ongoing research

Plant reproduction

What triggers plant reproduction? Why do plants produce heavy crops in some years and then almost nothing in others? How and why are plants synchronized in their reproduction?

Journé V., Szymkowiak J., Foest J., Kelly D., Hacket-Pain A., Bogdziewicz M. (2024) Maximizing the Moran effect: summer solstice orchestrates the subcontinental-scale synchrony of mast seeding. Nature Plants

Bogdziewicz M., Journé V., Hacket-Pain A., Szymkowiak J. (2023). Mechanisms driving interspecific variation in regional synchrony of trees reproduction. Ecology Letters

Trade-off and resource allocation

Is there any trade-off between growth and reproduction? Are carbohydrates involved in plant reproduction?

Organisms can not allocate all the resources to growth, survival, and reproduction at the same time. Preferences of allocation into one component, or one trait would affect other potentially visible or non-visible traits, and components.

Journé V., Cubaynes S., Papaïx J., Buoro M. (2022). Detection of Eco‐Evolutionary Processes in the Wild: Evolutionary Trade‐Offs Between Life History Traits.

Journé V., Kunstler G. Clark J S et al. (2024). The relationship between maturation size and maximum tree size from tropical to boreal climates. Ecology Letters

New synthesis

Are there any patterns in tree fecundity? What are the differences in seed production variation across plant species?

I am interested in testing some ecological theories with a large dataset

Journé V., Hacket-Pain A., Bogdziewicz M. (2023) Evolution of masting in plants is linked to investment in low tissue mortality. Nature Communications

Journé V., Courbaud B., Kunstler G., Qiu T., Clark J.S. et al (2022). Globally, tree fecundity exceeds productivity gradients. Ecology Letters.
Hacket-Pain et al. Shifting patterns of fruit production in tropical forests with negative outnumbering positive trends.

Forecasting and models

Living on Earth is like living in a pot, with oceans and forests playing a critical role in sequestering carbon. The most frequently used models (SDM for example) make strong assumptions (neglecting adaptation, plasticity, phenology, etc), or other models (more process-based, like dynamic vegetation models) can also miss important processes (like tree reproduction). My research aims to explore the limitations of current models and find ways to improve them so that we can better anticipate the effects of climate change.

Journé V., Hacket-Pain A., Oberklammer I., Pesendorfer M., Bogdziewicz M. (2023). Forecasting seed production in perennial plants: identifying challenges and charting a path forward. New Phytologist

Journé V., Barnagaud JY, Bernard C., Crochet P-A, Morin X (2019). Correlative climatic niche models predict real and virtual species distributions equally well.