Publication Details

Category Text Publication
Reference Category Book chapters
Title (Primary) Extinctions in habitat remnants: lessons from a specialized gecko species
Title (Secondary) Jahrestagung 1995, Dresden/Tharandt
Author Wiegand, K.; Brandl, R.; Henle, K.; Sarre, S.; Stephan, T.; Wissel, C.
Publisher Pfadenhauer, J.; Kappen, L.; Mahn, E.G.; Otte, A.; Plachter, H.
Source Titel Verhandlungen der Gesellschaft für Ökologie
Year 1996
Department OESA; NSF
Volume 26
Page From 489
Page To 494
Language englisch
Keywords Fragmentation, extinction, population dynamics, risk analysis, nature conservation, simulation model
Abstract

The Western Australian wheatbelt is an area that has  been rapidly developed for agriculture about 70 years  ago. Most of the native forests were cleared and  species adapted to this vegetation are now restricted  to small isolated remnants. One example is the reti·  culated velvet gecko Oedura reticulata. We explore  the hypothesis that actual presence-absence patterns  of this species across forest remnants are the results  of stochastic extinctions of local populations in small  remnants. For this purpose, we constructed an individuals-  based model to estimate extinction risks of  isolated gecko populations. Our results show that  within the given time scale, O. reticulata may survive  even in very small forest remnants and we have to  reject the hypothesis of stochastic extinctions as the  main factor influencing the biogeographic pattern.  From a discussion of the implicit assumptions of our  model, we pinpoint further factors influencing the actual  distribution of species in the Western Australian  wheatbelt. 

Persistent UFZ Identifier https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=22467
Wiegand, K., Brandl, R., Henle, K., Sarre, S., Stephan, T., Wissel, C. (1996):
Extinctions in habitat remnants: lessons from a specialized gecko species
In: Pfadenhauer, J., Kappen, L., Mahn, E.G., Otte, A., Plachter, H. (eds.)
Jahrestagung 1995, Dresden/Tharandt
Verhandlungen der Gesellschaft für Ökologie 26
Fischer, Stuttgart, p. 489 - 494