<?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%">Simonson, William D</style></author><author><style face="normal" font="default" size="100%">Allen, Harriet D</style></author><author><style face="normal" font="default" size="100%">Coomes, David A</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Overstorey and topographic effects on understories: Evidence for linkage from cork oak (Quercus suber) forests in southern Spain</style></title><secondary-title><style face="normal" font="default" size="100%">Forest Ecology and Management</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Airborne lidar</style></keyword><keyword><style  face="normal" font="default" size="100%">Mediterranean</style></keyword><keyword><style  face="normal" font="default" size="100%">microclimate</style></keyword><keyword><style  face="normal" font="default" size="100%">Plant–plant interactions</style></keyword><keyword><style  face="normal" font="default" size="100%">Remote sensing</style></keyword><keyword><style  face="normal" font="default" size="100%">vegetation structure</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2014</style></year></dates><volume><style face="normal" font="default" size="100%">328</style></volume><pages><style face="normal" font="default" size="100%">35-44</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The understorey is a critical feature of forest ecosystems, affecting nutrient cycling, biodiversity, regeneration capacity and wildfire regimes. Understanding the interaction of environmental and canopy controls on understorey development is therefore important for forest management. We use airborne lidar to elucidate this interaction in a forest of cork oak (Quercus suber) mixed with the deciduous oak (Quercus canariensis) on complex topographic relief in southern Spain. Solar radiation (controlled by aspect) and topographic position were highly influential in the differential distribution of the two dominant canopy trees, and exerted some control on their canopy density and height. There was a detectable effect of both canopy characteristics and solar radiation on the amount of understorey shrub cover, indicating direct and indirect controls of the environment on this stratum. In cork oak forest, understorey shrubbery increased towards valley bottoms, at lower levels of solar radiation and under shorter canopies. Our results are relevant to the management of these forest systems in the face of future change. They suggest that maturation and closure of these even-aged stands, coupled with climate warming, may lead to impoverishment of the shrub layer, reducing the build-up of fuel but also the biodiversity value of these systems.</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%">Faria, Nuno</style></author><author><style face="normal" font="default" size="100%">Rabaça, João E.</style></author><author><style face="normal" font="default" size="100%">Morales, Manuel B.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">The importance of grazing regime in the provision of breeding habitat for grassland birds: The case of the endangered little bustard (Tetrax tetrax)</style></title><secondary-title><style face="normal" font="default" size="100%">Journal for Nature Conservation</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Green plants</style></keyword><keyword><style  face="normal" font="default" size="100%">livestock</style></keyword><keyword><style  face="normal" font="default" size="100%">pasture management</style></keyword><keyword><style  face="normal" font="default" size="100%">Stocking rates</style></keyword><keyword><style  face="normal" font="default" size="100%">Tetrax tetrax</style></keyword><keyword><style  face="normal" font="default" size="100%">vegetation structure</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2012</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2012///</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://linkinghub.elsevier.com/retrieve/pii/S1617138112000350</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">20</style></volume><pages><style face="normal" font="default" size="100%">211 - 218</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">In Mediterranean dry grasslands, grazing by domestic animals is an important agricultural activity on dry grasslands. Several bird species occur in these grazed habitats and are now experiencing a near continuous decline. We investigated the impact of livestock grazing on the threatened little bustard (Tetrax tetrax L.). The study was conducted at the NATURA 2000 Site/Important Bird Area of Cabrela, Portugal. Our main goals were to investigate responses of little bustard territorial males and breeding females to different livestock management practices, namely pasture types, stocking rates and sward structure. Bird distribution was surveyed using car and foot surveys. Data on grazing was supplied by land managers every 10 days from February to June through ﬁeld interviews. Generalised additive models and model averaging were used to compute predictive models. Results indicate that higher probabilities of occurrence were found in long-term pastures and under light-moderate grazing conditions (stocking rates around 0.4 LU/ha). Conversely, lower probabilities of occurrence were found in ungrazed or heavy grazed ﬁelds. Males occurred mostly in large ﬁelds, but this variable seemed to be less important for females. On the other hand, green plant cover and the vegetation height were good predictors for the occurrence of females but not for males. Females used mostly pastures with vegetation height around 20–25 cm. Our results suggest that grazing management plans that aim to conserve little bustard populations should consider (1) the maintenance of the larger long-term pastures and (2) the use of light-moderate stocking rates (0.2–0.6 LU/ha).</style></abstract><issue><style face="normal" font="default" size="100%">4</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%">Brotons, L</style></author><author><style face="normal" font="default" size="100%">Herrando, S</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Factors affecting bird communities in fragments of secondary pine forests in the north-western Mediterranean basin</style></title><secondary-title><style face="normal" font="default" size="100%">ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">birds</style></keyword><keyword><style  face="normal" font="default" size="100%">fragmentation</style></keyword><keyword><style  face="normal" font="default" size="100%">isolation</style></keyword><keyword><style  face="normal" font="default" size="100%">Mediterranean mosaics</style></keyword><keyword><style  face="normal" font="default" size="100%">vegetation structure</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2001</style></year></dates><publisher><style face="normal" font="default" size="100%">GAUTHIER-VILLARS/EDITIONS ELSEVIER</style></publisher><pub-location><style face="normal" font="default" size="100%">23 RUE LINOIS, 75015 PARIS, FRANCE</style></pub-location><volume><style face="normal" font="default" size="100%">22</style></volume><pages><style face="normal" font="default" size="100%">21-31</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">We assessed the influence of size, extent of isolation and vegetation structure of secondary forest fragments on the richness and species composition of breeding bird communities in a sample of pine forest fragments surrounded by an agricultural matrix in the north-western Mediterranean basin. Fragment size was the main predictor of bird's occurrence, since it accounted for 70 % of the model variation. Isolation was also a valuable predictor of species occurrence, especially for forest specialists. Finally, subarboreal vegetation such as holm oak and a well-developed tree layer of large pines favoured forest species occurrence. Therefore, in spite of the long history of human impact, forest birds in Mediterranean mosaics are sensitive to both habitat loss and isolation of remnant patches in a similar manner to the patterns found in other temperate fragmented landscapes where human impact is more recent. (C) 2001 Editions scientifiques et medicales Elsevier SAS.</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%">Brotons, L.</style></author><author><style face="normal" font="default" size="100%">Herrando, S.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Factors affecting bird communities in fragments of secondary pine forests in the north-western Mediterranean basin</style></title><secondary-title><style face="normal" font="default" size="100%">ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">birds</style></keyword><keyword><style  face="normal" font="default" size="100%">fragmentation</style></keyword><keyword><style  face="normal" font="default" size="100%">isolation</style></keyword><keyword><style  face="normal" font="default" size="100%">Mediterranean mosaics</style></keyword><keyword><style  face="normal" font="default" size="100%">vegetation structure</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2001</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2001///</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">22</style></volume><pages><style face="normal" font="default" size="100%">21 - 31</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">We assessed the influence of size, extent of isolation and vegetation structure of secondary forest fragments on the richness and species composition of breeding bird communities in a sample of pine forest fragments surrounded by an agricultural matrix in the north-western Mediterranean basin. Fragment size was the main predictor of bird's occurrence, since it accounted for 70 % of the model variation. Isolation was also a valuable predictor of species occurrence, especially for forest specialists. Finally, subarboreal vegetation such as holm oak and a well-developed tree layer of large pines favoured forest species occurrence. Therefore, in spite of the long history of human impact, forest birds in Mediterranean mosaics are sensitive to both habitat loss and isolation of remnant patches in a similar manner to the patterns found in other temperate fragmented landscapes where human impact is more recent. (C) 2001 Editions scientifiques et medicales Elsevier SAS.</style></abstract><issue><style face="normal" font="default" size="100%">1</style></issue><notes><style face="normal" font="default" size="100%">The following values have no corresponding Zotero field:&lt;br/&gt;pub-location: 23 RUE LINOIS, 75015 PARIS, FRANCE&lt;br/&gt;publisher: GAUTHIER-VILLARS/EDITIONS ELSEVIER</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%">Labhar, M</style></author><author><style face="normal" font="default" size="100%">Tanghe, M</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Recent evolution of the Jbel Hebri forest (Western Middle Atlas, Morocco)</style></title><secondary-title><style face="normal" font="default" size="100%">BELGIAN JOURNAL OF BOTANY</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">areial photograph</style></keyword><keyword><style  face="normal" font="default" size="100%">forest evolution</style></keyword><keyword><style  face="normal" font="default" size="100%">photogrammetry</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus ilex</style></keyword><keyword><style  face="normal" font="default" size="100%">vegetation structure</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1998</style></year></dates><publisher><style face="normal" font="default" size="100%">SOC ROYAL BOTAN BELGIQUE</style></publisher><pub-location><style face="normal" font="default" size="100%">NIEUWELAAN 38, B-1860 MEISE, BELGIUM</style></pub-location><volume><style face="normal" font="default" size="100%">131</style></volume><pages><style face="normal" font="default" size="100%">13-22</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">This study deals with the different aspects of forest evolution on the Jbel Hebri mountain ranges. On the basis of a comparative aerial photograph analysis (1962 and 1987 missions) completed by photogrammetry and field observations, the vegetation structure and its succession stages have been recognized. Although the total forest area remains unchanged, the physiognomic stages of identified communities (Cedrus atlantica forest; Quercus rotundifolia forest; mixed forest with Cedrus atlantica and Quercus rotundifolia) show heterogenous evolution. Depending on species and forest components we note paradoxal evolutionary tendencies. Systematic degradation due to harvesting and resource overuse is locally observed beside regenerated and densified parts. Therefore, the system dynamics reflects the locally variable factors such as soil hydrology and human impact.</style></abstract><notes><style face="normal" font="default" size="100%">APS</style></notes><research-notes><style face="normal" font="default" size="100%">APS</style></research-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%">Wojterski, Teofil W</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Degradation stages of the oak forests in the area of Algiers</style></title><secondary-title><style face="normal" font="default" size="100%">Vegetatio</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">anthropic influence</style></keyword><keyword><style  face="normal" font="default" size="100%">degradation</style></keyword><keyword><style  face="normal" font="default" size="100%">Mediterranean vegetation</style></keyword><keyword><style  face="normal" font="default" size="100%">Vegetation dynamics</style></keyword><keyword><style  face="normal" font="default" size="100%">vegetation structure</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1990</style></year></dates><volume><style face="normal" font="default" size="100%">87</style></volume><pages><style face="normal" font="default" size="100%">135-143</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Long lasting human impact on the natural Mediterranean vegetation is the reason for its degradation. Uncontrolled felling of trees, fire and overgrazing are the most important ecological causes of this process. Geobotanical investigations made in the area of Algiers facilitated the characterization of degradation changes in the structure of vegetation and in the floristic composition in all the degradation stages. Under the influence of the degradation factors, mentioned above, the oak forests, growing on different, more or less calcareous substrates, are transformed into various shrub formations, mainly into many types of 'maquis' and 'garrigue'. The floristic composition of these communities is given in Table 2. Further degradation leads to widespread Cistus-formations and then to 'palmitto', a formation created by the dwarf palm (Chamaerops humilis). When the anthropopressure becomes stronger even this dwarf palm retreats. Loose swards, replacing the 'palmitto' formation, often cannot stop the subsequent degradation. Bare rock is the extreme, relatively rare stage of forest degradation in this area. The most common form of natural regeneration is the invasion of Pinus halepensis, observed in all degradation stages identified. This pine is also one of trees, most commonly planted on mountain slopes to prevent their erosion.</style></abstract></record></records></xml>