This two-volume set provides a one-stop resource on invasive plants, animals, fungi, and microorganisms that are threatening native ecosystems, agriculture, economies, and human health in the United States. • 79 entries on animal species and 89 entries on plants, including some fungi and microorganisms • State-by-state lists of invasive animals and plants designated as noxious or invasive • Maps accompany each entry, depicting the organism's original habitat and the regions to which it has now spread • Tables on pathways of introduction and impacts of invasive plants • Hundreds of photographs of featured plants, animals, and fungi • A glossary of terms related to the biology and ecology of invasive species • Appendixes containing information on organizations and legislation related to the prevention or control of invasive species