Plant traits extend Earth observations to the level of individual organisms, providing a critical link between biodiversity, ecosystem functioning, and biogeochemical modelling under rapid global change. However, bridging the temporal and spatial mismatches between plant trait data and biogeochemical cycles remains a major challenge.

This session addresses the role of plant traits, biodiversity, acclimation, and adaptation in regulating the biogeochemical cycles of water, carbon, nitrogen, phosphorus, and sulphur across scales. We welcome conceptual, observational, experimental, and modelling studies from local to global levels, including in situ and remote sensing approaches.

Merging with original session 3.24 "Unlocking fruit crop resilience to a changing climate through stable isotopes and plant phenotyping integration”, this year's focus highlights agroecosystems and perennial fruit crops increasingly subjected to climate-induced stressors such as drought, salinity, and temperature extremes, including studies that integrate plant traits with stable isotope analyses (δ¹³C, δ¹⁵N, δ²H, δ¹⁸O, δ³⁴S) and plant phenomics (e.g., RGB, infrared, chlorophyll fluorescence, hyperspectral sensing) to explore physiological plasticity, resource-use efficiency, and adaptive responses. Special focus is given to multi-scalar approaches that connect soil–plant–atmosphere interactions, genotype-specific resilience, and pedoclimatic influences on plant metabolism. By combining biogeochemistry, eco-physiology, and agronomy, this session seeks to advance trait-based understanding of plant responses to global change and to promote climate-resilient agricultural systems.