Lévy Flight Foraging
Optimal foraging theory — Lévy flights vs. Brownian motion
Foraging Parameters
Lévy alpha α:
2.0
Food density ρ:
0.003
Steps per run:
800
Run Lévy α
Run Brownian
Lévy found:
—
Brownian found:
—
Efficiency ratio:
—
Lévy steps:
—
Brownian steps:
—
Lévy: P(L) ∝ L^−α
α ∈ (1,3) gives Lévy flights
α=2 optimal for sparse prey
(Viswanathan et al. 1999)
Pink = Lévy path
Blue = Brownian path
Yellow dots = food items
Stars = food found