Type: Autre événement

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.

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Building a bridge between river corridors, roadsides and field margins: how landscape interactions modulate taxonomic and functional plant diversity

The BRIDGE project aimed to better understand the role of local and regional environmental factors in shaping the taxonomic and functional diversity of plant communities established along river corridors, roadside corridors and cultivated field margins. It gathered partners from the U.K., France, Spain, Italy, Canada and the U.S.A. The analysis of local and regional patterns was conducted from a database including 11,400 field samples (plots) and about 3,000 species characterized by ecological traits.

The analysis of the role of river-road intersections showed that bridges do influence taxonomic and functional biodiversity, but only at a local scale. Surprisingly, diffuse landscape-level processes explain more plant diversity than directional (along-corridor) processes. We showed that the diversity of roadside should not be underestimated, and more generally that the three interacting habitats studied share many species and trait values, suggesting they can constitute surrogate relays for hosting similar species across the landscape. However, local conditions of disturbance and water and nutrient availability modulate this potential interaction.

The BRIDGE and NAVIDIV FRB-CESAB-ITTECOP projects joined to produce a synthesis on the role of transportation infrastructure in helping plant species to track Global Climate change, highlighting both positive and negative aspects of this phenomenon.

 

Publications

• Rievrs Borges, E., González-Sargas, E., Casajus, N., Carboni, M., Bauman, D., Fried, G., Maskell, L., Escario, A.J., Planty-Tabacchi, A.-M. and Tabacchi, E. (2025). Road-River Intersections (Bridges) Negatively Affect Plant Species Diversity and Ecological Attributes. Applied Vegetation Science, 28: e70011. https://doi.org/10.1111/avsc.70011
• Casajus, N., Rievrs Borges, E., Tabacchi, E., Fried, G. & Mouquet, N. (2023). chessboard: An R package for creating network connections based on chess moves. The Journal of Open Source Software 8(90), 5753, https://doi.org/10.21105/joss.05753