Understand biogeochemical cycles and anthropogenic impacts

Model nutrient and carbon flows through Earth systems

Predicting nutrient availability changes or carbon sequestration potential under climate scenarios

• · Biome or ecosystem description
• · Atmospheric/oceanic conditions
• · Anthropogenic input rates

• · Nutrient budget calculation
• · Residence time estimate
• · Flux rates (tons/year)

• · Biogeochemical modeling software
• · Isotope tracing data
• · Climate model output

• · Ecosystem boundaries defined
• · Source/sink data available

• · Missing lateral transport (advection)
• · Heterotrophy rates underestimated
• · Seasonal variability ignored
• · Eutrophication feedback not included

• · Nitrogen/phosphorus/carbon cycle mechanisms
• · Eutrophication process explained
• · Residence time calculations
• · Anthropogenic perturbations quantified