Eutrophication — 2D Time-Series Lab

Canvas2D companion

Drivers

Nutrient input rate 1.20 g/m²·yr Water temperature 20 °C

Ecosystem state

Nutrient level—

Algae biomass—

Dissolved O₂—

Fish population—

Days simulated0

Healthy

Nutrient runoff drives logistic algae growth; when algae die, bacterial decomposition consumes dissolved oxygen. Fish die off once oxygen drops below the ~4–5 mg/L hypoxia threshold, and the die-off accelerates the lower it falls.

Nutrient Algae Oxygen (mg/L) Fish