THE IDEA

Can predators and prey coexist?

Predators need prey to grow; prey lose population when predators are abundant.

Inside this model

Discrete Euler steps approximate dX/dt=αX−βXY and dY/dt=δXY−γY. Initial prey is 50, α=food/100, β=.006, δ=.002 and γ=.18. A step of .2 is run for 100 ticks.

Out in the world

A practical use

Explore why predator peaks can lag behind prey peaks in a simplified food web.

WHERE IT BREAKS

A useful lens. Not a universal law.

  • This minimal two-species model ignores migration, saturation and seasonality; its oscillations are not a forecast.

Associated thinkers

Further reading

Explore the original research or the teaching reference behind this experiment.

Lotka–Volterra equations and SIR models — review ↗