Allee Effect

Available identifiers

WikidataQ2301505 ScholiaQ2301505MaRDI QIDQ6674126

effect to model the infection rate as a function of population density

The Allee effect is used to model the infection rate as a function of population density, where it represents a lower transmission probability in less densely populated regions. We adopt the effect and bound it from below by 1⁄3. This ensures that the effect is at most three times lower in sparsely populated areas than in regions with high population density. To enforce the lower bound, we apply a shift n₀ in the Allee term. We choose n₀ = ³⁄₂·A.

Defining Formula: $1 - \frac{A}{n + n_{0}} \geq \frac{1}{3}$
$A$ symbol represents Allee Threshold
$n$ symbol represents Population Density