Allee Effects in Ecology and Conservation - Franck Courchamp, Ludek Berec, Joanna Gascoigne - Google Books

http://books.google.de/books?id=TZzQlhBw8sMC&pg=PA156

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…