<?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%">Avilés, Jesus M.</style></author><author><style face="normal" font="default" size="100%">Sánchez, Juan M.</style></author><author><style face="normal" font="default" size="100%">Parejo, Deseada</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Food selection of wintering common cranes (Grus grus) in holm oak (Quercus ilex) dehesas in south-west Spain in a rainy season</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Zoology</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">age differences</style></keyword><keyword><style  face="normal" font="default" size="100%">Common Crane</style></keyword><keyword><style  face="normal" font="default" size="100%">food selection</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%">Quercus ilex</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://doi.wiley.com/10.1017/S0952836902000092</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">256</style></volume><pages><style face="normal" font="default" size="100%">71 - 79</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">In the holm oak Quercus ilex dehesas of the Iberian Peninsula, several food types occur that can be selected by birds through the winter. In this framework, diet composition and diet selection of common cranes Grus grus was studied during a rainy wintering season. The winter diet of the common crane is mostly herbivorous in the holm oak dehesas of south-west Spain with &lt; 10% of items being of animal origin. Leaves and stems of sown cereal, bulbs, acorns and cereal grain are the most common vegetable food types. The diversity of the overall winter diet was similar among juveniles and among adults with and without juveniles in attendance. However, there were differences in diet composition between juvenile birds and their parents. Furthermore, the diet composition of adult cranes with juveniles in attendance was different from that of adult cranes without juveniles in attendance. Foraging abilities of juvenile cranes did not vary signi®cantly through the winter, suggesting a low effect of experience on diet differences between age classes. Our results point toward the existence of diet differences among the three considered crane categories related with differential habitat selection by family groups. The monthly pattern of choice of each food type differed from those expected according to the monthly pattern of food availability in the study area. Cereal grain was the most preferred food type when it was available. When cereal seed germinated, cranes shifted to acorns and bulbs which were then more pro®table</style></abstract><issue><style face="normal" font="default" size="100%">1</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%">Avilés, Jesús M</style></author><author><style face="normal" font="default" size="100%">Sánchez, Juan M</style></author><author><style face="normal" font="default" size="100%">Parejo, Deseada</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Food selection of wintering common cranes (Grus grus) in holm oak (Quercus ilex) dehesas in south-west Spain in a rainy season</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Zoology</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">age differences</style></keyword><keyword><style  face="normal" font="default" size="100%">Common Crane</style></keyword><keyword><style  face="normal" font="default" size="100%">food selection</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%">Quercus ilex</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2006</style></year></dates><volume><style face="normal" font="default" size="100%">256</style></volume><pages><style face="normal" font="default" size="100%">71-79</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">In the holm oak Quercus ilex dehesas of the Iberian Peninsula, several food types occur that can be selected by birds through the winter. In this framework, diet composition and diet selection of common cranes Grus grus was studied during a rainy wintering season. The winter diet of the common crane is mostly herbivorous in the holm oak dehesas of south-west Spain with &lt; 10% of items being of animal origin. Leaves and stems of sown cereal, bulbs, acorns and cereal grain are the most common vegetable food types. The diversity of the overall winter diet was similar among juveniles and among adults with and without juveniles in attendance. However, there were differences in diet composition between juvenile birds and their parents. Furthermore, the diet composition of adult cranes with juveniles in attendance was different from that of adult cranes without juveniles in attendance. Foraging abilities of juvenile cranes did not vary signi®cantly through the winter, suggesting a low effect of experience on diet differences between age classes. Our results point toward the existence of diet differences among the three considered crane categories related with differential habitat selection by family groups. The monthly pattern of choice of each food type differed from those expected according to the monthly pattern of food availability in the study area. Cereal grain was the most preferred food type when it was available. When cereal seed germinated, cranes shifted to acorns and bulbs which were then more pro®table</style></abstract></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></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><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><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%">FRANCO, ALDINA M A</style></author><author><style face="normal" font="default" size="100%">BRITO, JOSÉ C</style></author><author><style face="normal" font="default" size="100%">ALMEIDA, JULIA</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Modelling habitat selection of Common Cranes Grus grus wintering in Portugal using multiple logistic regression</style></title><secondary-title><style face="normal" font="default" size="100%">Ibis</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Common Crane</style></keyword><keyword><style  face="normal" font="default" size="100%">habitat suitability models</style></keyword><keyword><style  face="normal" font="default" size="100%">holm oak woodlands (voyant)</style></keyword><keyword><style  face="normal" font="default" size="100%">wintering habitats</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2000</style></year></dates><publisher><style face="normal" font="default" size="100%">Blackwell Publishing Ltd</style></publisher><volume><style face="normal" font="default" size="100%">142</style></volume><pages><style face="normal" font="default" size="100%">351-358</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Predictive models of habitat suitability for the Common Crane Grus grus in a wintering area of southern Portugal were derived using logistic multiple regression and Geographic Information Systems. The study area was characterized by landscape variables and surveyed uniformly for the presence of cranes. The most important variables were distance to roosts, to open Holm Oak woods and to villages, and the occurrence of unpaved roads, shrubby vegetation, slope and orchards. Two models were built, the second having one variable fewer than the first. The selection of the best model was based on statistical and biological criteria. Crane distribution was negatively related to: distance to open Holm Oak Quercus rotundifolia woods and roosts. Additionally, unsuitable vegetation and orchard areas are avoided. In these areas movement is difficult, food availability is reduced and the risk of predation increased. We also found that villages and roads were avoided; disturbance is a significant factor for this species. Some management guidelines are proposed for the area: (1) maintenance of open Holm Oak woodlands, (2) incentives to avoid the abandonment of traditional agriculture and pastoral use of the area, which would lead to an increase of shrubby vegetation areas, (3) preservation of suitable roosting places and (4) management of new patches of forest and orchards.</style></abstract></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%">FRANCO, ALDINA M. A.</style></author><author><style face="normal" font="default" size="100%">BRITO, JOSÉ C.</style></author><author><style face="normal" font="default" size="100%">ALMEIDA, JULIA</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Modelling habitat selection of Common Cranes Grus grus wintering in Portugal using multiple logistic regression</style></title><secondary-title><style face="normal" font="default" size="100%">Ibis</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Common Crane</style></keyword><keyword><style  face="normal" font="default" size="100%">habitat suitability models</style></keyword><keyword><style  face="normal" font="default" size="100%">holm oak woodlands (voyant)</style></keyword><keyword><style  face="normal" font="default" size="100%">wintering habitats</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2000</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2000///</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://dx.doi.org/10.1111/j.1474-919X.2000.tb04430.x</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">142</style></volume><pages><style face="normal" font="default" size="100%">351 - 358</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Predictive models of habitat suitability for the Common Crane Grus grus in a wintering area of southern Portugal were derived using logistic multiple regression and Geographic Information Systems. The study area was characterized by landscape variables and surveyed uniformly for the presence of cranes. The most important variables were distance to roosts, to open Holm Oak woods and to villages, and the occurrence of unpaved roads, shrubby vegetation, slope and orchards. Two models were built, the second having one variable fewer than the first. The selection of the best model was based on statistical and biological criteria. Crane distribution was negatively related to: distance to open Holm Oak Quercus rotundifolia woods and roosts. Additionally, unsuitable vegetation and orchard areas are avoided. In these areas movement is difficult, food availability is reduced and the risk of predation increased. We also found that villages and roads were avoided; disturbance is a significant factor for this species. Some management guidelines are proposed for the area: (1) maintenance of open Holm Oak woodlands, (2) incentives to avoid the abandonment of traditional agriculture and pastoral use of the area, which would lead to an increase of shrubby vegetation areas, (3) preservation of suitable roosting places and (4) management of new patches of forest and orchards.</style></abstract><issue><style face="normal" font="default" size="100%">3</style></issue><notes><style face="normal" font="default" size="100%">The following values have no corresponding Zotero field:&lt;br/&gt;publisher: Blackwell Publishing Ltd</style></notes></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%">Guzmán, J M S</style></author><author><style face="normal" font="default" size="100%">García, A S</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Influence of farming activities in the Iberian Peninsula on the winter habitat use of common crane ( Grus grus) in areas of its traditional migratory routes</style></title><secondary-title><style face="normal" font="default" size="100%">Agriculture, ecosystems &amp;…</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Common Crane</style></keyword><keyword><style  face="normal" font="default" size="100%">g. grus</style></keyword><keyword><style  face="normal" font="default" size="100%">land use</style></keyword><keyword><style  face="normal" font="default" size="100%">modification</style></keyword><keyword><style  face="normal" font="default" size="100%">population increase</style></keyword><keyword><style  face="normal" font="default" size="100%">southwestern Spain</style></keyword><keyword><style  face="normal" font="default" size="100%">traditional area</style></keyword><keyword><style  face="normal" font="default" size="100%">wintering pattern</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1999</style></year></dates><volume><style face="normal" font="default" size="100%">72</style></volume><pages><style face="normal" font="default" size="100%">207-214</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Farming activities can in¯uence bird habitat and wintering patterns. Changes in the wintering habitat use of common crane (Grus grus) were related to changes in land use on this species' traditional migration route in the Western Palaearctics. The study was conducted in the Orellana area (Extremadura, SW Spain), the most important wintering area on this route, where the continued availability of natural food resources (acorns, bulbs, invertebrates) represents a more balanced diet than agricultural resources alone. The presence of crops such as corn (Zea mays L.) is, however, not a critical factor in the area, since the two types of resources, natural and agricultural, are available in the same period of time. The increase in area dedicated to irrigated crops, especially rice (Oriza sp.), affected the growth in the numbers of wintering cranes in the Orellana area. In the past the peak wintering period was in December and was positively correlated to acorn production, whereas the peak period is now in January±February, coinciding with the use of rice-®eld stubble as feeding places. Dehesas (Mediteranean scrub), cultivated or not, may replace rice-®eld stubble as feeding places. The existence of intensive farming activity in combination with traditional land-uses is suggested to be the cause of these changes. #</style></abstract></record></records></xml>