Biogeochemical cycles of elements are intertwined with the dynamics of particulate matter (PM) in terrestrial systems. The particulate pool is a mixture of suspended particles encompassing nanoparticles, colloids, and micron-sized aggregates. Compared to dissolved solutes, PM's unique size and surface reactivity affect the retention, mobilization, and decomposition of strongly-sorbed constituents, including carbon, nutrients, contaminants, and trace metals. Changes in biogeochemical processes also complicate their dispersion, transport, and transformation, further compounding our understanding of their biogeochemical roles in terrestrial environments. This multidisciplinary session encourages discussions on PM’s linkage to their functions in biogeochemical cycles. These include the occurrence and properties of PM in the soil solutions to adjacent aquatic systems throughout watersheds. Topics such as ecosystem functions, trace metal cycling, carbon and nutrient cycling, emerging contaminants (e.g., nano and microplastics), pore-scale processes, distribution and transport in watersheds, adsorption and desorption, biomineralization, and geochemical characterization using theoretical and empirical models are welcomed.

• B - Biogeosciences

• EGU: European Geosciences Union -
• SSSA: Soil Science Society of America -