This self-contained book thoroughly addresses the major concepts of mathematical ecology and natural resource management while simultaneously introducing the use of mathematical methods to non-mathematicians and detailing the related biological complexity to mathematicians. Topical coverage includes: unstructured single species population dynamics with deterministic models; exploited unstructured populations; unstructured single species population dynamics with stochastic models; unstructured populations interacting at the same and different time scales; age- and size-structured populations; applications of age-structured models; dynamics of infectious diseases; and spatially-structured models and their applications.