Understanding evolutionary and ecological dynamics using a continuum limit

This manuscript contains nothing new, but synthesizes known results: For the theoretical population geneticist with a probabilistic background, we provide a summary of some key results on stochastic differential equations. For the evolutionary game theorist, we give a new perspective on the derivations of results obtained when using discrete birth-death processes. For the theoretical biologist familiar with deterministic modeling, we outline how to derive and work with stochastic versions of classical ecological and evolutionary processes.