residents and visitors of Gasparilla Island summarizing my findings and providing and overview about the iguanas, their impacts, and management on the island.

This book details the natural history and distribution of native and established nonnative amphibians and reptiles in Florida. It provides extensive information on Florida biodiversity, herpetology and specimen collection, major contributors to Florida herpetology, taxonomy, environmental setting, status of each species, population trends and impacts, survey and research methods, and source of mapped locality records.--

Florida contains more exotic amphibians and reptiles than any other U.S. state. Illustrated species accounts detail the history and nature of each, the mode of dispersal, natural history, and present-day habitat and geographic distribution in the state. The impact of these animals is measured by their presence in natural systems of Florida and predator-prey interactions with native and other exotic species. The authors update the list of the documented exotic species in Florida and provide a progress report on new and published natural history information for each established species. An afterword examines the role people have played in the success of these species.

Iguanas are large, primeval-appearing animals that have always attracted considerable attention and scientific study. The 30 species of iguanas are today collectively referred to as iguanines, or the subfamily Iguaninae, of the lizard family Iguanidae. This book is the result of a symposium of worldwide scientists on the world's iguanas that was held at a joint meeting of the Society of the Study of Amphibians and Reptiles and The Herpetologist's League. Over 30 recognized experts submitted their studies of these interesting reptiles, and have published what was once unknown and unpublished information. This book was a leader in its time and still serves as a wonderful reference for scientist and student alike.

This book deals with the ecological effect a species can have when it moves into an environment that it has not previously occupied (commonly referred to as an 'Invasion'). It is unique in presenting a clear and accessible introduction to a highly complex area - the modelling of biological invasions. The book presents the latest theories and models developed from studies into this crucial area. It includes data and examples from biological case studies showing how the models can be applied to the study of invasions, whether dealing with AIDS, the European rabbit, or prickly pear cactuses. - ;In nature, all organisms migrate or disperse to some extent, either by walking, swimming, flying, or being transported by wind or water. When a species succeeds in colonising an area that it has not previously inhabited, this is referred to as an `invasion'. Humans can precipitate biological invasions often spreading disease or pests by their travels around the world. Using the large amount of data that has been collected from studies worldwide, ranging from pest control to epidemiology, it has been possible to construct mathematical models that can predict which species will become an invader, what kind of habitat is susceptible to invasion by a particular species, and how fast an invasion will spread if it occurs. This book presents a clear and accessible introduction to this highly complex area. Included are data and examples from biological case studies showing how these models can be applied to the study of invasions, whether dealing with AIDS, the European rabbit, or prickly pear cactuses. -