2024-03-29T06:57:10Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/442962018-10-03T09:03:06Zcom_10261_13com_10261_8col_10261_266
Efects of Habitat Destruction in a Prey Predator Metapopulation Model
Bascompte, Jordi
Solé, Ricard V.
A mean _eld\ metapopulation model of a predator prey interaction is developed in order to understand the consequences of habitat destruction at di}erent trophic levels[ Such a model allows us to explore di}erent ecological scenarios "donor control vs[ top!down control# by
changing a single parameter[ The response to habitat destruction is qualitatively the same for
both predator and prey\ although there are interesting di}erences linked to the trophic
position[ A similar decrease in the colonization rate a}ects the two species quite di}erently[
Predators diminish faster than prey\ and furthermore\ the fraction of occupied sites decreases
more sharply as colonization rates are lowered\ i[e[ there is a nonlinear relationship between
regional abundance and colonization rate[ There is a well!de_ned threshold in the
colonization rate below which the predator becomes extinct[ Thus\ dispersal rate is critical
for predicting the consequences of habitat destruction[ Finally\ these results are compared
with the behavior of a spatially explicit simulation[ The only di}erence between the analytical
model and the simulation is that colonization is no longer a global phenomenon in the latter\
but it is a local process\ constrained to the nearest patches[ The bulk of the results are similar
to the mean _eld behavior\ and we comment on some di}erences related with non!homogeneity and real space[ Some general implications for conservation biology and biological control are outlined[
Peer reviewed
2012-01-16T12:17:50Z
2012-01-16T12:17:50Z
1998-12
artículo
http://purl.org/coar/resource_type/c_6501
Journal of Theoretical Biology 195(3) : 383-393 (1998)
http://hdl.handle.net/10261/44296
10.1006/jtbi.1998.0803
en
#PLACEHOLDER_PARENT_METADATA_VALUE#
http://dx.doi.org/10.1006/jtbi.1998.0803
none
Elsevier