Current applications of his work include (1) the implementation of strategies for controlling SARS-CoV-2 (COVID-19) and other viral pathogens such as Norovirus and Influenza in urban, agricultural, freshwater and marine ecosystems, (2) understanding the flow and control of antimicrobial resistance in a One Health context, (3) promoting carbon sequestration in agricultural systems and understanding the factors regulating carbon cycling and greenhouse gas emissions, (4) developing ways to improve nutrient use efficiency in cropping systems with specific focus on nitrogen and phosphorus, (5) microplastic pollution, (6) soil microbial diversity and ecosystem functioning, (7) modelling nutrients dynamics in the plant-soil-microbial and freshwater ecosystems, (8) understanding the barriers to technology adoption by farmers, and (9) the impact of flooding, drought and ozone on ecosystem functioning (including tipping points) and potential strategies to enhance ecosystem resilience.