How do we know whether a particular species is monogamous or promiscuous? How can we monitor the illegal trafficking of wildlife? How can we differentiate between the many similar species making up a microbial community? An Introduction to Molecular Ecology introduces the latest molecular concepts and techniques, demonstrating how genetic markers and molecular tools can be used to answer such ecological questions. Such questions, whose answers were previously out of our reach, can now be probed, thereby revolutionizing our understanding of ecological systems and phenomena. Blending conceptual detail with the most instructive examples, An Introduction to Molecular Ecology is an ideal resource for those new to the subject needing to develop a strong working understanding of the field. The book captures the broad scope of the subject, exploring the use of molecular tools in the context of topics including behavioral genetics, phylogeography, microbial ecology, and conservation. New to this Edition Full-color design with a series of stunning new photographs Improved pedagogy, including web links, end-of-chapter questions, and data analysis exercises New practical and analytical method boxes present case studies and associated references for further study Superior coverage of quantitative concepts Enhanced companion website with data files to support exercises posed in the book, links to articles referenced in the text, and downloadable figures Features Demonstrates the power of molecular ecology as a research tool in a style ideally suited for an undergraduate audience Uses practical examples to demonstrate the latest methods and concepts rather than relying exclusively on theoretical models Blends factual content with tools for active learning