<?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%">Ramírez-Valiente, J a.</style></author><author><style face="normal" font="default" size="100%">Alia, R</style></author><author><style face="normal" font="default" size="100%">Aranda, I</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Geographical variation in growth form traits in Quercus suber and its relation to population evolutionary history</style></title><secondary-title><style face="normal" font="default" size="100%">Evolutionary Ecology</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Evolutionary history</style></keyword><keyword><style  face="normal" font="default" size="100%">Growth adaptation</style></keyword><keyword><style  face="normal" font="default" size="100%">plant architecture</style></keyword><keyword><style  face="normal" font="default" size="100%">Population ecology</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2013</style></year></dates><volume><style face="normal" font="default" size="100%">28</style></volume><pages><style face="normal" font="default" size="100%">55-68</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Differential selection pressures caused by environmental disparities lead to populations to become differentiated as they adapt to local environments. In addition, natural selection during the species past can contribute to the observed differentiation. In this study, we examine the geographic variation in a set of four traits related to growth and plant architecture in cork oak (Quercus suber) and investigate to what extent this variation is the result of the effects of ongoing evolution in current environments and the past evolutionary history of the species. Cork oak saplings at the common garden trial exhibited differences in plant architecture associated to cpDNA lineage. Eastern lineages, exhibited the lowest apical dominance and highest branchiness, consistent with the analyses in other cork oak trials. In contrast, patterns linked to the evolutionary past were less evident in height and diameter. These results suggest that selective pressures after cpDNA divergence can have blurred patterns in some traits closely related to fitness, while conserving the past evolutionary imprints in plant architectural traits. Introgressed populations did not show significant differentiation in architecture, which suggests that allele exchanges via hybridization have had a limited effect on population differentiation in cork oak. Finally, populations within lineages also showed differences in growth and architecture. Correla- tion between population architecture and temperature patterns were observed indicating that environmental factors such as climate also could result crucial in the evolution of plant architecture of cork oak within lineages</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%">Fox, Xenia</style></author><author><style face="normal" font="default" size="100%">Deil, Ulrich</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Distribution , Ecology and Population Structure of Euphorbia monchiquensis , an Endemism in Southern Portugal</style></title><secondary-title><style face="normal" font="default" size="100%">Silva Lusitana</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">age-states</style></keyword><keyword><style  face="normal" font="default" size="100%">conservation biology</style></keyword><keyword><style  face="normal" font="default" size="100%">landuse</style></keyword><keyword><style  face="normal" font="default" size="100%">plant architecture</style></keyword><keyword><style  face="normal" font="default" size="100%">reproduction</style></keyword><keyword><style  face="normal" font="default" size="100%">serra de monchique</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2004</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2004///</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">12</style></volume><pages><style face="normal" font="default" size="100%">25 - 42</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Euphorbia monchiquensis is, within the widespread and euryoecious E. paniculata- complex, an acidophilous subspecies, endemic in Southern Portugal. To evaluate the vulnerability of this taxon vis-a-vis disturbance and landuse changes, we studied the actual distribution, the population size, the ecological requirements and the coenological value of this taxon in the Serra de Monchique, a mountainous region in the Algarve Hinterland. Data sampling was between April and July 2001. The quite constant branching system of this half shrubby spurge allows to determine the age of the indivuduals from the plant architecture and therefore to study the demographic structure in a non-destructive way. 1618 individuals, clustered in 46 populations, have been registered in the Serra. 88% were in flower. Euphorbia monchiquensis is rare relative to its overall distribution. It shows a bimodal altitudinal and coenological pattern. The majority of the populations are concentrated in the most humid mid altitudes and on the luv-ward northwestern side of the Serra. A few populations occur in the dry lowlands, linked to riverine shrublets. The plant depends on a good water supply but does not need shadowing. Within its limited bioclimatic niche, the spurge has a certain capacity of recolonisation and is not extremely sensitive to disturbance. Humid forests of the Euphorbio monchiquensis-Quercetum canariensis are just one of the preferred sociological situations. The coenological spectrum includes pure cork oak forests, Castanea sativa coppices, Eucalyptus-afforestations, mantle communities (Lonicero-Rubetum, Rubo- Nerietum), Origanion virentis fringes, abandoned meadows and roadside verges. It was in this kind of secondary habitats with intermittent disturbance, that most of the juvenile plants could be stated. Only very few plantlings were found. Most of the recorded populations are well balanced in their medium age classes, others are overaged. A correlation between habitat qualities, the reproductive effort and the regeneration efficiency could not be found. Four inflorescence- -morphotypes can be distinguished. The inflorescence architecture becomes more complex with increasing age. Euphorbia monchiquensis is not an extremely endangered, but a vulnerable species. It can be threatened by the process of Eucalyptus afforestation and by the spontaneous spread of Acacia dealbata. To give a reliable answer to the extinction risk, further aspects of its life cycle, seed bank characteristics, and reproductive behaviour have to be studied.</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%">Fox, Xenia</style></author><author><style face="normal" font="default" size="100%">Deil, Ulrich</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Distribution , Ecology and Population Structure of Euphorbia monchiquensis , an Endemism in Southern Portugal</style></title><secondary-title><style face="normal" font="default" size="100%">Silva Lusitana</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">age-states</style></keyword><keyword><style  face="normal" font="default" size="100%">conservation biology</style></keyword><keyword><style  face="normal" font="default" size="100%">landuse</style></keyword><keyword><style  face="normal" font="default" size="100%">plant architecture</style></keyword><keyword><style  face="normal" font="default" size="100%">reproduction</style></keyword><keyword><style  face="normal" font="default" size="100%">serra de monchique</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2004</style></year></dates><volume><style face="normal" font="default" size="100%">12</style></volume><pages><style face="normal" font="default" size="100%">25-42</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Euphorbia monchiquensis is, within the widespread and euryoecious E. paniculata- complex, an acidophilous subspecies, endemic in Southern Portugal. To evaluate the vulnerability of this taxon vis-a-vis disturbance and landuse changes, we studied the actual distribution, the population size, the ecological requirements and the coenological value of this taxon in the Serra de Monchique, a mountainous region in the Algarve Hinterland. Data sampling was between April and July 2001. The quite constant branching system of this half shrubby spurge allows to determine the age of the indivuduals from the plant architecture and therefore to study the demographic structure in a non-destructive way. 1618 individuals, clustered in 46 populations, have been registered in the Serra. 88% were in flower. Euphorbia monchiquensis is rare relative to its overall distribution. It shows a bimodal altitudinal and coenological pattern. The majority of the populations are concentrated in the most humid mid altitudes and on the luv-ward northwestern side of the Serra. A few populations occur in the dry lowlands, linked to riverine shrublets. The plant depends on a good water supply but does not need shadowing. Within its limited bioclimatic niche, the spurge has a certain capacity of recolonisation and is not extremely sensitive to disturbance. Humid forests of the Euphorbio monchiquensis-Quercetum canariensis are just one of the preferred sociological situations. The coenological spectrum includes pure cork oak forests, Castanea sativa coppices, Eucalyptus-afforestations, mantle communities (Lonicero-Rubetum, Rubo- Nerietum), Origanion virentis fringes, abandoned meadows and roadside verges. It was in this kind of secondary habitats with intermittent disturbance, that most of the juvenile plants could be stated. Only very few plantlings were found. Most of the recorded populations are well balanced in their medium age classes, others are overaged. A correlation between habitat qualities, the reproductive effort and the regeneration efficiency could not be found. Four inflorescence- -morphotypes can be distinguished. The inflorescence architecture becomes more complex with increasing age. Euphorbia monchiquensis is not an extremely endangered, but a vulnerable species. It can be threatened by the process of Eucalyptus afforestation and by the spontaneous spread of Acacia dealbata. To give a reliable answer to the extinction risk, further aspects of its life cycle, seed bank characteristics, and reproductive behaviour have to be studied.</style></abstract></record></records></xml>