Allee Effects in Ecology and Conservation

Paperback | June 15, 2009

byFRANCK COURCHAMP, Ludek Berec, Joanna Gascoigne

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Allee effects are (broadly) defined as a decline in individual fitness at low population size or density. They can result in critical population thresholds below which populations crash to extinction. As such, they are very relevant to many conservation programmes, where scientists andmanagers are often working with populations that have been reduced to low densities or small numbers. There are a variety of mechanisms that can create Allee effects including mating systems, predation, environmental modification, and social interactions. The abrupt and unpredicted collapses of manyexploited populations is just one illustration of the need to bring Allee effects to the forefront of conservation and management strategies.Allee Effects in Ecology and Conservation provides a concise yet authoritative overview of the topic, collating and integrating a widely dispersed literature from various fields - marine and terrestrial, plant and animal, theoretical and empirical, academic and applied. This accessible text, withits clear and simple explanations of both empirical observations and theoretical predications is particularly suitable for professional and academic ecologists requiring an overview of the state-of-the-art in Allee effect research, as well as for graduate students in population ecology andconservation biology. It will also be of relevance to a wide readership of professionals in conservation and management requiring a concise summary of the topic.

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From the Publisher

Allee effects are (broadly) defined as a decline in individual fitness at low population size or density. They can result in critical population thresholds below which populations crash to extinction. As such, they are very relevant to many conservation programmes, where scientists andmanagers are often working with populations that ha...

Franck Courchamp is a CNRS researcher in population dynamics at the University of Paris Sud, France. His research covers two connected areas: biological invasions and Allee effects, both carried out mostly from a conservation biology perspective. He focuses mainly on theoretical work, but his prolonged stays at the Scripps Institute o...

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Format:PaperbackDimensions:272 pagesPublished:June 15, 2009Publisher:Oxford University PressLanguage:English

The following ISBNs are associated with this title:

ISBN - 10:0199567557

ISBN - 13:9780199567553

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Table of Contents

1. What are Allee effects?2. Mechanisms for Allee effects3. Population dynamics: modelling demographic Allee effects4. Genetics and evolution5. Conservation and management6. Conclusions and perspectivesReferencesIndex

Editorial Reviews

"...delightfully engaging to read. With their new book, Courchamp, Berec, and Gascoigne provide a broad intellectual grounding and literature review upon which the future study and application of Allee effects, in all their guises, is sure to flourish." --PLoS Biology