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Modelling sandgrouse (Pterocles spp.) distributions and large-scale habitat requirements in Spain: implications for conservation

Published online by Cambridge University Press:  01 July 2013

ANA BENÍTEZ-LÓPEZ ,
JAVIER VIÑUELA ,
ISRAEL HERVÁS ,
FRANCISCO SUÁREZ  and
JESÚS T. GARCÍA
ANA BENÍTEZ-LÓPEZ*
Affiliation:
Instituto de Investigación en Recursos Cinegéticos, IREC (CSIC-UCLM-JCCM), Ronda de Toledo s/n, E-13071 Ciudad Real, Spain
JAVIER VIÑUELA
Affiliation:
Instituto de Investigación en Recursos Cinegéticos, IREC (CSIC-UCLM-JCCM), Ronda de Toledo s/n, E-13071 Ciudad Real, Spain
ISRAEL HERVÁS
Affiliation:
Departamento de Ecología. Edificio de Biología C/Darwin, 2 Universidad Autónoma de Madrid, 28049 Madrid, Spain
FRANCISCO SUÁREZ
Affiliation:
Departamento de Ecología. Edificio de Biología C/Darwin, 2 Universidad Autónoma de Madrid, 28049 Madrid, Spain
JESÚS T. GARCÍA
Affiliation:
Instituto de Investigación en Recursos Cinegéticos, IREC (CSIC-UCLM-JCCM), Ronda de Toledo s/n, E-13071 Ciudad Real, Spain
*
*Correspondence: Ana Benítez-López Tel: +34 926 295 450 ext. 3392 Fax: +34 926 295 451 e-mail: [email protected]
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Summary

Knowledge of the factors determining species distributions is essential for developing conservation strategies. Sandgrouse Pterocles alchata and P. orientalis are threatened in Spain, the stronghold of European populations. Spatial modelling was used to: (1) assess the relative importance of abiotic, anthropogenic and geographical factors in the distribution of both sandgrouse species, (2) determine the most important anthropogenic predictors for each species occurrence, and (3) identify areas where conservation efforts should be prioritized. Abiotic and anthropogenic factors explained most of the variation in sandgrouse distributions. Both species were associated with arid flatlands, arable land cover being the most important anthropogenic variable determining their distribution. The Common Agricultural Policy (CAP) is the main driver of agricultural management in Europe, and may thus have a direct effect on sandgrouse distributions. P. orientalis exhibited broader habitat tolerance than P. alchata; the latter species tolerates warmer climates. Consequently, the network of core and marginally suitable areas identified for each species differs, and connectivity between the populations of these areas seems unlikely. Potential future changes in sandgrouse distribution will probably be directed principally by the synergistic effects of climate change and expected land-use transformations resulting from the new CAP and ongoing population growth, urbanization and infrastructure development.

Keywords

biogeographyconservationPterocles alchataPterocles orientalissandgrousespecies distribution modelssteppe birdsthreatened speciesvariation partitioning procedure
Type
THEMATIC SECTION: Spatial Simulation Models in Planning for Resilience
Information
Environmental Conservation , Volume 41 , Issue 2 , June 2014 , pp. 132 - 143
Copyright
Copyright © Foundation for Environmental Conservation 2013 

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