<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Morán-lópez, R.</style></author><author><style face="normal" font="default" size="100%">Sánchez, J. M.</style></author><author><style face="normal" font="default" size="100%">Costillo, E.</style></author><author><style face="normal" font="default" size="100%">Corbacho, C.</style></author><author><style face="normal" font="default" size="100%">Villegas, A.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Spatial variation in anthropic and natural factors regulating the breeding success of the cinereous vulture (Aegypius monachus) in the SW Iberian Peninsula</style></title><secondary-title><style face="normal" font="default" size="100%">Biological Conservation</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Global climate change</style></keyword><keyword><style  face="normal" font="default" size="100%">Habitat and livestock management</style></keyword><keyword><style  face="normal" font="default" size="100%">Human disturbance</style></keyword><keyword><style  face="normal" font="default" size="100%">non-natural breeding failure</style></keyword><keyword><style  face="normal" font="default" size="100%">Transport infrastructure</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2006///</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://linkinghub.elsevier.com/retrieve/pii/S0006320705005537</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">130</style></volume><pages><style face="normal" font="default" size="100%">169 - 182</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The management of the cinereous vulture (Aegypius monachus) populations, the largest bird of the Western Palæarctic and considered an umbrella species, requires the understanding of the factors limiting the breeding success. As part of a management program, we studied such factors in seven breeding colonies in Extremadura (SW Iberian Peninsula). Using a Geographic Information System and multivariate models, we analyzed the relationship of breeding success with anthropic and natural factors at the nest site and in the foraging area of the adults. We incorporated into the models density-dependent effects between pairs and the spatial autocorrelation of the environmental variables. The differences in breeding success resulted from spatial variations in natural and anthropic conditions, with present human disturbance to nests and future alteration of climate having an expected negative effect at all the sites. Management measures must set calendar restrictions for the immediate environment of the nests, mainly with respect to forestry and hunting activities. A second key element is the protection of the habitats at the nest sites and in their surrounding area, with the aim of there being both wooded areas available for the location of the nest and open environments for the availability of food. The Special Protection Areas showed a partial effectiveness of conservation measures for the species, and the need for future improvement. Lastly, in a scenario of global warming, management policies with respect to nesting habitats will have to be extended to higher altitude zones, actions that should be guided by the study of the selection of potential nesting habitat.</style></abstract><issue><style face="normal" font="default" size="100%">2</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Aviles, J. M.</style></author><author><style face="normal" font="default" size="100%">Medina, F. J.</style></author><author><style face="normal" font="default" size="100%">Sánchez, J. M.</style></author><author><style face="normal" font="default" size="100%">Parejo, D.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Does temporal variability of winter Common Cranes in the dehesas depend on farming practices?</style></title><secondary-title><style face="normal" font="default" size="100%">Waterbirds</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Agricultural intensification</style></keyword><keyword><style  face="normal" font="default" size="100%">Common Crane</style></keyword><keyword><style  face="normal" font="default" size="100%">Grus grus</style></keyword><keyword><style  face="normal" font="default" size="100%">holm oak dehesas</style></keyword><keyword><style  face="normal" font="default" size="100%">southwestern Spain</style></keyword><keyword><style  face="normal" font="default" size="100%">winter stability</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2002</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2002///</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.bioone.org/doi/abs/10.1675/1524-4695(2002)025[0078:DTVOWC]2.0.CO;2</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">25</style></volume><pages><style face="normal" font="default" size="100%">86 - 92</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The inclusion of Spain and Portugal within the European Community has brought about a change in the traditional farming practices in the dehesas of Iberia to intensive cereal and to irrigated crops. Here we use seven-year counts of Common Cranes in 38 wintering sites to evaluate whether habitat structure modified by farm- ing practices in the Holm Oak (Quercus ilex) dehesas is an important determinant of variability in winter crane num- bers. We extracted, from a set of nine variables that express different levels of human management in the Holm Oak dehesas, two factors that accounted for the 66% of the variance. The first factor was related to livestock utiliza- tion of the dehesas, while the second one reflected Holm Oak presence. We ran a general linear model to analyze the influence of farming practices (PC1 and PC2), landscape heterogeneity and roost site stability on inter- and in- tra-season variability in numbers of winter cranes. Livestock presence, Holm Oak presence, landscape heterogeneity and roost type stability did not explain intra- and inter- season variability in crane numbers wintering in the Holm Oak dehesas of Spain.</style></abstract><issue><style face="normal" font="default" size="100%">1</style></issue></record></records></xml>