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  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…

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  Prof. Dr. Jürgen Bauhus — Professur für Waldbau / Chair of Silviculture

  http://www.waldbau.uni-freiburg.de/mitarbeiter/mitarbeiter_sammlung/bauhus

  Leitung der Professur für Waldbau

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