Food Web Patterns. Food Webs: explanations. Explanations for food webs draw heavily on two kinds of models: dynamic models base on extensions of the Lotka-Volterra predator-prey models, and static models that make no specific reference between population dynamics and food web patterns.
where biis the per capita population growth rate of species i, ai,jis the per capita effect of species j on species i, including intraspecific effects when i=j, and Xiis the abundance of species i, in a system of n species
dXi / dt = Xi (bi + ∑ ai,jXj) = Fi