Books  Ecological & Biological Sciences  Populations & Communities 

Allee Effects in Ecology and Conservation

By: Franck Courchamp(Author), Luděk Berec(Author), Joanna Gascoigne(Author)

256 pages, 96 figs

Oxford University Press

Paperback | Apr 2009 | #177516 | ISBN-13: 9780199567553
Availability: Usually dispatched within 5 days Details
NHBS Price: £45.99 $61/€52 approx
Hardback | Feb 2008 | #169113 | ISBN-13: 9780198570301
Availability: Usually dispatched within 2-3 weeks Details
NHBS Price: £68.99 $91/€79 approx

About this book

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 and managers 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 many exploited 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, with its 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 and conservation biology. It will also be of relevance to a wide readership of professionals in conservation and management requiring a concise summary of the topic.

"[The book] is topical, a reliable summary, and will be a useful guide to the increasingly large and complicated literature on an important and overlooked phenomenon. Probably the greatest contributions this publication makes are the compilation, in a single place, of the many species in which Allee effects have been documented and a complete bibliography of the primary literature."
Quarterly Review of Biology

"Courchamp et al. have impressively surveyed the veritable explosion of empirical and theoretical investigations of Allee effects that have appeared since the emergence of conservation biology [...] Courchamp et al. have rendered a great service to future researchers. I throughly recommend the book for graduate reading seminars, and as an essential acquisition for libraries and ecologists' bookshelves."
– Brian Dennis, Environmental Conservation

"This interesting book is a beginners' primer, describing the the various factors that might be involved, how their consequences are modelled mathematically, and the implications for conservation, pest control, and population managment generally."
– John Edington, The London Naturalist


1. What are Allee effects?
2. Mechanisms for Allee effects
3. Population dynamics: modelling demographic Allee effects
4. Genetics and evolution
5. Conservation and management
6. Conclusions and perspectives

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