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Title

Floater mortality within settlement areas can explain the Allee effect in breeding populations.

AuthorsPenteriani, Vincenzo ; Otalora, Fermín; Ferrer, Miguel ; Ferrer, Miguel
KeywordsAllee effect
Aquila adalberti
Density-dependent fecundity
Extinction
Floater
Settlement areas
Spanish imperial eagle
Issue Date24-Apr-2008
PublisherElsevier
CitationEcological Modelling 213(1): 98-104 (2008)
AbstractThe Allee effect (the positive relationship between population growth rate and population size) is a constraint of some animal populations at low numbers, which increases their likelihood of extinction because of a decrease in reproduction and/or survival. We were able to demonstrate that the Allee effect can be the result of a mortality increase affecting floaters (i.e. dispersing individuals able to enter as breeders in the reproductive population when a breeding territory or a potential mate – owner of a suitable breeding territory – becomes available). Previously, potential mechanisms underlying Allee effects were always related to the breeding portion of a population only. In contrast, our understanding of or solutions to population declines due to the Allee effects can reside elsewhere, away from breeding territories.
Description7 pages, 2 figures.
Publisher version (URL)http:/dx.doi.org/10.1016/j.ecolmodel.2007.11.009
URIhttp://hdl.handle.net/10261/18447
DOI10.1016/j.ecolmodel.2007.11.009
ISSN0304-3800
Appears in Collections:(IACT) Artículos
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