Biocomplexity (Network/Pattern Analysis and Inference, Collective Dynamics), Ecosystem Dynamics (Biodiversity, Species Interactions, Eco-Environmental Flows), Land Use/Land Cover Change and Habitat Eco-geomorphological Modeling, Ecohydrological Extremes & Climate Impacts, Blue Carbon (Biogeochemical Dynamics), Environmental Microbiome, Aquatic Ecosystems (Riverine and Marine), Ecosystem Health, Multiscale Predictions  and Forecasting, Ecosystem Indicators and Critical Transitions, Ecosystem Monitoring and Data Science, Portfolio Ecosystem Management, Ecological Engineering and Ecosystem Design