<?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%">Cortés, Pilar</style></author><author><style face="normal" font="default" size="100%">Espelta, J. M.</style></author><author><style face="normal" font="default" size="100%">Save, Robert</style></author><author><style face="normal" font="default" size="100%">Biel, C.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Effects of a nursery CO 2 enriched atmosphere on the germination and seedling morphology of two Mediterranean oaks with contrasting leaf habit</style></title><secondary-title><style face="normal" font="default" size="100%">New Forests</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Forest restoration</style></keyword><keyword><style  face="normal" font="default" size="100%">Mediterranean-type ecosystems</style></keyword><keyword><style  face="normal" font="default" size="100%">Nursery techniques</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus cerrioides</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus ilex</style></keyword><keyword><style  face="normal" font="default" size="100%">Wildﬁre</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><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.springerlink.com/index/T42225U564534875.pdf</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">28</style></volume><pages><style face="normal" font="default" size="100%">79 - 88</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The use of an enriched CO2 atmosphere in tree nurseries has been envisaged as a promising technique to increase productivity and to obtain seedlings with a higher root/shoot ratio, an essential trait to respond to water stress in Mediterranean-type ecosystems. In that framework, we have analyzed the effects of three levels of atmospheric CO2 concentration (350, 500 and 700 ppm) on the germination rate, growth and morphology of seedlings of two Mediterranean oaks used in reforestation programs: the evergreen Quercus ilex L. and the deciduous Quercus cerrioides Wilk. et Costa. CO2 enrichment increased the germination rate of Q. cerrioides (from 70 7 to 81 3%) while it decreased that of Q. ilex (from 71 10 to 41 12%). Seedlings of both species increased approximately 60% their total biomass in response to CO2 enrichment but at two different CO2 concentrations: 500 ppm for Q. cerrioides and 700 ppm for Q. ilex. This increase in seedlings biomass was entirely due to an augmentation of root biomass. Considering germination and biomass partitioning, an enriched CO2 atmosphere might not be appropriate for growing Mediterranean evergreen oaks, such as Q. ilex, since it reduces acorn germination and the only gains in root biomass occur at a high concentration (700 ppm). On the other hand, a moderate CO2 enrichment (500 ppm) appears as a promising nursery technique to stimulate the germination, growth and root/shoot ratio of deciduous oaks, such as Q. cerrioides</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Espelta, J. M.</style></author><author><style face="normal" font="default" size="100%">GENE, C.</style></author><author><style face="normal" font="default" size="100%">Retana, J.</style></author><author><style face="normal" font="default" size="100%">TERRADAS, J.</style></author></authors><secondary-authors><author><style face="normal" font="default" size="100%">Teller, A. and Mathy</style></author></secondary-authors></contributors><titles><title><style face="normal" font="default" size="100%">STRUCTURE OF MIXED HOLM-OAK (QUERCUS-ILEX) ALEPPO PINE (PINUS-HALEPENSIS) FORESTS IN NORTHEASTERN SPAIN</style></title><secondary-title><style face="normal" font="default" size="100%">RESPONSES OF FOREST ECOSYSTEMS TO ENVIRONMENTAL CHANGES</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">mixed forests</style></keyword><keyword><style  face="normal" font="default" size="100%">Pinus halepensis</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus ilex</style></keyword><keyword><style  face="normal" font="default" size="100%">Spain</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1992</style></year><pub-dates><date><style  face="normal" font="default" size="100%">1992///</style></date></pub-dates></dates><publisher><style face="normal" font="default" size="100%">ELSEVIER APPL SCI PUBL LTD</style></publisher><pages><style face="normal" font="default" size="100%">892 - 893</style></pages><isbn><style face="normal" font="default" size="100%">1-85166-878-0</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Mixed forests of Aleppo pine (Pinus halepensis) and holm-oak (Quercus ilex) cover a great part of Northeastern Spain. Nevertheless, little is known about their structure, dynamics and regeneration. For some years, a research group in CREAF has collected data about those aspects, in order to use them to develop models that could be used as a tool for forest management. Previous results obteined about the structure of these stands are presented in the present paper.</style></abstract><notes><style face="normal" font="default" size="100%">The following values have no corresponding Zotero field:&lt;br/&gt;periodical: RESPONSES OF FOREST ECOSYSTEMS TO ENVIRONMENTAL CHANGES&lt;br/&gt;pub-location: BARKING ESSEX</style></notes></record></records></xml>