Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1086/375298
Titel (primär) Foray search: an effective systematic dispersal strategy in fragmented landscapes
Autor Conradt, L.; Zollner, P.A.; Roper, T.J.; Frank, K. ORCID logo ; Thomas, C.D.
Quelle American Naturalist
Erscheinungsjahr 2003
Department OESA
Band/Volume 161
Heft 6
Seite von 905
Seite bis 915
Sprache englisch
Abstract

In the absence of evidence to the contrary, population models generally assume that the dispersal trajectories of animals are random, but systematic dispersal could be more efficient at detecting new habitat and may therefore constitute a more realistic assumption. Here, we investigate, by means of simulations, the properties of a potentially widespread systematic dispersal strategy termed "foray search." Foray search was more efficient in detecting suitable habitat than was random dispersal in most landscapes and was less subject to energetic constraints. However, it also resulted in considerably shorter net dispersed distances and higher mortality per net dispersed distance than did random dispersal, and it would therefore be likely to lead to lower dispersal rates toward the margins of population networks. Consequently, the use of foray search by dispersers could crucially affect the extinction-colonization balance of metapopulations and the evolution of dispersal rates. We conclude that population models need to take the dispersal trajectories of individuals into account in order to make reliable predictions.

dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=4767
Conradt, L., Zollner, P.A., Roper, T.J., Frank, K., Thomas, C.D. (2003):
Foray search: an effective systematic dispersal strategy in fragmented landscapes
Am. Nat. 161 (6), 905 - 915 10.1086/375298