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Species Richness (S) Calculator Show Theory & Instructions Understanding Species Richness (S) Species Richness (S) is the simplest measure of biodiversity and is defined as the total number of different

Simpson's Diversity Index Calculator Show Theory & Instructions Understanding Simpson's Diversity Indices Simpson's Diversity Index is a measure of diversity that takes into account both species richness (the number of

Margalef's Richness Index (DMg) Calculator Show Theory & Instructions Understanding Margalef's Richness Index (DMg) Margalef's Richness Index (DMg) is a measure of species richness that attempts to account for the

Lotka-Volterra Predator-Prey Simulator Show Theory & Equations The Lotka-Volterra Model The Lotka-Volterra equations, also known as the predator-prey equations, are a pair of first-order nonlinear differential equations frequently used to