Article (Scientific journals)
Metapopulation dynamics of the bog fritillary butterfly: Modelling the effect of habitat fragmentation
Sawchik, J.; Dufrêne, Marc; Lebrun, Philippe et al.
2002In Acta Oecologica, 23 (5), p. 287-296
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Keywords :
Fragmentation; Isolation effect; Metapopulation dynamics; Population dynamic models; Spatially realistic models; Lepidoptera; Proclossiana eunomia
Abstract :
[en] Population viability analysis (PVA) and metapopulation theory are valuable tools to model the dynamics of spatially structured populations. In this article we used a spatially realistic population dynamic model to simulate the trajectory of a Proclossiana eunomia metapopulation in a network of habitat patches located in the Belgian Ardenne. Sensitivity analysis was used to evaluate the relative influence of the different parameters on the model output. We simulated habitat loss by removing a percentage of the original habitat, proportionally in each habitat patch. Additionally, we evaluated isolation and fragmentation effects by removing and dividing habitat parches from the network, respectively. The model predicted a slow decline of the metapopulation size and occupancy. Extinction risks predicted by the model were highly sensitive to environmental stochasticity and carrying capacity. For a determined level of habitat destruction, the expected lifetime of the metapopulation was highly dependent on the spatial configuration of the landscape. Moreover, when the proportion of removed habitat is above 40% of the original habitat, the loss of whole patches invariably leads to the strongest reduction in metapopulation viability. © 2002 Éditions scientifiques et médicales Elsevier SAS. All rights reserved.
Disciplines :
Environmental sciences & ecology
Author, co-author :
Sawchik, J.;  Biodiversity Research Centre, Universite Catholique de Louvain, Louvain, Belgium, Seccion Ecologia Terrestre, Facultad de Ciencias, Universidad de la Republica, Iguá 4225, 11400 Montevideo, Uruguay
Dufrêne, Marc  ;  Université de Liège - ULiège > Forêts, Nature et Paysage > Biodiversité et Paysage
Lebrun, Philippe
Schtickzelle, N.;  Biodiversity Research Centre, Universite Catholique de Louvain, Louvain, Belgium
Baguette, M.;  Biodiversity Research Centre, Universite Catholique de Louvain, Louvain, Belgium
Language :
English
Title :
Metapopulation dynamics of the bog fritillary butterfly: Modelling the effect of habitat fragmentation
Publication date :
2002
Journal title :
Acta Oecologica
ISSN :
1146-609X
eISSN :
1873-6238
Publisher :
Elsevier, Netherlands
Volume :
23
Issue :
5
Pages :
287-296
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 24 March 2013

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