My research focuses on using mathematical models and data-model fusion to learn about drivers of biogeochemical dynamics in terrestrial ecosystems and its links with aquatic ecosystems. Mathematical models are a useful tool for learning about ecosystems as well as evaluating their response to changes in the environment. Models are also indispensable for making ecological forecasts and developing strategies for ecosystem management. In my work I explore how ecosystems respond to the changing drivers (such as elevated atmospheric CO2, altered temperature, and moisture regime), translate this knowledge into mathematical models, and ensure their reliability through data-model fusion.