<?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%">Costa, a</style></author><author><style face="normal" font="default" size="100%">Madeira, M.</style></author><author><style face="normal" font="default" size="100%">Santos Lima, J.</style></author><author><style face="normal" font="default" size="100%">Costa A, Madeira M.</style></author><author><style face="normal" font="default" size="100%">J, Santos Lima</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Is cork oak (Quercus suber L.) woodland loss driven by eucalyptus plantation? A case-study in southwestern Portugal</style></title><secondary-title><style face="normal" font="default" size="100%">iForest - Biogeosciences and Forestry</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">agroforestry systems</style></keyword><keyword><style  face="normal" font="default" size="100%">Eucalyptus Plantations</style></keyword><keyword><style  face="normal" font="default" size="100%">evergreen oak woodlands</style></keyword><keyword><style  face="normal" font="default" size="100%">Land Cover</style></keyword><keyword><style  face="normal" font="default" size="100%">Mediterranean Climate Region</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus suber L.</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2014</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2014///</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.sisef.it/iforest/contents/?id=ifor1031-007http://www.sisef.it/iforest/?doi=10.3832/ifor1031-007</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">7</style></volume><pages><style face="normal" font="default" size="100%">193 - 203</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Mediterranean landscapes with open cork oak (Quercus suber L.) woodlands have recently experienced drastic changes in southwestern Portugal. Changes in agricultural activities, the traditional driver of the economy in this region, led to new land uses such as long-term set aside (shrublands) and eucalyptus plantations. A study was conducted on the oak woodland landscape dynamics over a 50-year period (from 1958 to 2007) in order to assess the effect of different biophysical conditions on landscape spatial changes, and to identify the resilience of lanscape composition to different disturbances (e.g., socio-economic changes and wildfires). Land use changes over two consecutive periods (1958-1995 and 1995-2007) were inferred by spatial analysis of land cover data (aerial photographs) and related to landscape physical attributes (slope and soil type). A transition matrix of four vegetation land-cover classes was obtained, allowing the assessment of the landscape composition changes bewteen the two above periods. Results showed that lansdcape in 1958 was largely occupied by open farmland, with large patches of open oak woodlands on steep slopes surrounding watercourses. Open farmland and shrubland drastically declined from 1958 to 1995, while eucalyptus plantation exhibited a dramatic expansion. Although large areas of cork oak forest turned into eucalyptus plantation, the net loss of oak forest was low and counterbalanced by its increment on former open farmland. The occurrence of a wildfire in 2003 promoted a dramatic decrease in cork oak woodlands, which mostly turned into shrubland. However, shrubland may be considered &amp;#8220;safe sites&amp;#8221; for ecological succession, ensuring natural cork oak regeneration and the colonization of neighboring areas.</style></abstract><issue><style face="normal" font="default" size="100%">3</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%">Nunes, J. D.</style></author><author><style face="normal" font="default" size="100%">Gazarini, L.</style></author><author><style face="normal" font="default" size="100%">Madeira, M.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Diversidade funcional em sistemas de montado : fluxo de nutrientes em Quercus rotundifolia Lam . Functional diversity in “ montado ” systems : nutrients fluxes in Quercus</style></title><secondary-title><style face="normal" font="default" size="100%">Revista de Ciências Agrárias</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2007</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2007///</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">30</style></volume><pages><style face="normal" font="default" size="100%">235 - 250</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Nutrient cycling in Quercus rotundifolia Lam. systems, regarding precipitation was studied at Évora (Southern Portugal), since November of 1996 until December of 2000. The amounts of gross rainfall, throughfall (at different distances from the tree trunk) and stemflow were measured continuously and samples for chemical analysis were collected weekly. The concentration of nutrients was higher in the throughfall than in the gross rainfall, especially in the areas closer to the tree trunk. Nutrients transferred to soil, through bulk rainfall, throughfall and stemflow were quantified. The highest concentration of nutrients was observed in the stemflow water. Soil physical and chemical characteristics, underneath and outside Quercus rotundifolia crowns, were studied in areas where trees commonly are wide spaced. The amounts of the forest floor litter layer were also evaluated. Soil physical and chemical characteristics showed in general a positive effect with tree presence. Nitrogen transformation was examined under and outside the influence of the tree canopies. Nitrogen availability was higher in the soil of under crowns areas.</style></abstract><issue><style face="normal" font="default" size="100%">1</style></issue></record></records></xml>