<?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%">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></dates><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></record></records></xml>