NCEAS Project 2072

Habitat fragmentation: From spatially explicit models to the analysis of patterns in real ecosystems

  • Jordi Bascompte


ActivityDatesFurther Information
Postdoctoral Fellow15th January 1998—31st December 1999Participant List  
Visitor26th June—20th September 2000Participant List  

Abstract
Destruction and fragmentation of habitats are a major threat to biological diversity. A theoretical framework aimed at understanding and predicting communities' responses to these destructive processes is still lacking, however. In this proposal I describe an integrative approach aimed at gaining better insight on the response of ecosystems to habitat destruction. It is based on an interaction between theoretical models and the analysis of patterns in real ecosystems using data bases. Spatially explicit models can be derived to account for the role of spatial structure on metapopulation abundance and species diversity. There are critical thresholds of destruction, derived from percolation theory, at which landscape structural properties and the subsequent metapopulation regional abundance change in a non-linear way. This non-linearity has important implications for conservation biology and landscape management. Some of these predictions can be tested using data bases. Information provided by the models can help to explain the patterns observed in real ecosystems. In turn such data is expect to improve the models.

TypeProducts of NCEAS Research
Journal Article Bascompte, Jordi; Sole, Ricard V. 1998. Effects of habitat destruction in a prey-predator metapopulation model. Journal of Theoretical Biology. Vol: 195. Pages 383-393.
Journal Article Bascompte, Jordi; Sole, Ricard V. 1998. Spatiotemporal patterns in nature. Trends in Ecology & Evolution. Vol: 13. Pages 173-174.
Journal Article Bascompte, Jordi; Rodriguez, Miguel A. 2000. Self-disturbance as a source of spatiotemporal heterogeneity: The case of the tallgrass prairie. Journal of Theoretical Biology. Vol: 204. Pages 153-164.
Journal Article Bascompte, Jordi. 2001. Aggregate statistical measures and metapopulation dynamics. Journal of Theoretical Biology. Vol: 209. Pages 373-379.
Journal Article Bascompte, Jordi; Rodriguez, Miguel A. 2001. Habitat patchiness and plant species richness. Ecology Letters. Vol: 4. Pages 417-420.
Journal Article Bjornstad, Ottar N.; Bascompte, Jordi. 2001. Synchrony and second-order spatial correlation in host-parasitoid systems. Journal of Animal Ecology. Vol: 70. Pages 924-933.
Journal Article Ovaskainen, Otso; Sato, Kazunori; Bascompte, Jordi; Hanski, Ilkka. 2002. Metapopulation models for extinction threshold in spatially correlated landscapes. Journal of Theoretical Biology. Vol: 215(1). Pages 95-108.
Journal Article Roemer, Gary W.; Coonan, Timothy J.; Garcelon, David K.; Bascompte, Jordi; Laughgrin, L. 2001. Feral pigs facilitate hyperpredation by golden eagles and indirectly cause the decline of the island fox. Animal Conservation. Vol: 4. Pages 307-318.
Journal Article Sole, Ricard V.; Alonso, David; Bascompte, Jordi; Manrubia, S.C. 2001. On the fractal nature of ecological and macroevolutionary dynamics. Fractals-Complex Geometry Patterns and Scaling in Nature and Society. Vol: 9. Pages 1-16.