phosphorus pollution.

Quantifying how belowground fungal and bacterial communities assemble and mediate nutrient cycling, plant health, and ecosystem-level patterns — from phyllosphere to rhizosphere.

Investigating how soil microbial communities drive organic carbon accumulation and nutrient dynamics across tropical forest succession, land-use change, and biogeochemical gradients.

Examining how mutualist and pathogen fungi in soils drive conspecific negative density dependence and maintain the extraordinary diversity of tropical forests.