Skip to main content Accessibility help
×
Home

Restore habitat or reduce mortality? Implications from a population viability analysis of the Iberian lynx

  • Pablo Ferreras (a1), Pilar Gaona (a1), Francisco Palomares (a1) and Miguel Delibes (a1)

Abstract

Managers trying to preserve populations of endangered carnivores are often forced to choose between restoring habitat to allow larger breeding populations or reduce risks of mortality to increase survival rates. We modelled the viability of a metapopulation of the Iberian lynx (Lynx pardinus) under several scenarios (habitat restoration, anti-poaching, reduction in road kills) in a real landscape to evaluate their relative effects. Increasing carrying capacity was highly effective when performed on the local populations that acted as sources but had no effect when carried out in the sinks. Realistic scenarios consisting of partial removal of the human-related mortality (assuming additive effects of causes) predicted high risk of extinction. When combined, the effects of both management options are highly dependent on where they are carried out. If the sinks are the only targets of carrying capacity enlargement, a complete removal of human-caused mortality is required, whereas increases in the carrying capacity of sources are always effective. The metapopulation risk of extinction decreases dramatically (from 45.5% to 2.1% in 100) if connectivity among source populations can be improved. According to our work, only a detailed knowledge of the spatial and demographic structure of the populations, combined with simulations of realistic situations, can help managers to select the a priori optimal strategy, which probably combines different management options.

Copyright

Corresponding author

All correspondence to: Pablo Ferreras, Instituto de Investigación en Recursos Cinegéticos (CSIC-UCLM), Calle Libertad, 7A, 13004 Ciudad Real, SPAIN. Tel: (+34) 926 225659; Fax: (+34) 926 225184; E-mail: pferreras@irec.uclm.es.

Restore habitat or reduce mortality? Implications from a population viability analysis of the Iberian lynx

  • Pablo Ferreras (a1), Pilar Gaona (a1), Francisco Palomares (a1) and Miguel Delibes (a1)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed