<?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%">Carranca, C.</style></author><author><style face="normal" font="default" size="100%">Castro, I. V.</style></author><author><style face="normal" font="default" size="100%">Figueiredo, N.</style></author><author><style face="normal" font="default" size="100%">Redondo, R.</style></author><author><style face="normal" font="default" size="100%">Rodrigues, a R. F.</style></author><author><style face="normal" font="default" size="100%">Saraiva, I.</style></author><author><style face="normal" font="default" size="100%">Maricato, R.</style></author><author><style face="normal" font="default" size="100%">Madeira, M. a V.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Influence of tree canopy on N2 fixation by pasture legumes and soil rhizobial abundance in Mediterranean oak woodlands.</style></title><secondary-title><style face="normal" font="default" size="100%">The Science of the total environment</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Above and belowground organ</style></keyword><keyword><style  face="normal" font="default" size="100%">Agro forestry system</style></keyword><keyword><style  face="normal" font="default" size="100%">Cutting frequency</style></keyword><keyword><style  face="normal" font="default" size="100%">light</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%">2015</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2015///</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.ncbi.nlm.nih.gov/pubmed/25460942</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">506-507</style></volume><pages><style face="normal" font="default" size="100%">86 - 94</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Symbiotic N2 fixation is of primordial significance in sustainable agro-forestry management as it allows reducing the use of mineral N in the production of mixed stands and by protecting the soils from degradation. Thereby, on a 2-year basis, N2 fixation was evaluated in four oak woodlands under Mediterranean conditions using a split-plot design and three replicates. (15)N technique was used for determination of N2 fixation rate. Variations in environmental conditions (temperature, rainfall, radiation) by the cork tree canopy as well as the age of stands and pasture management can cause great differences in vegetation growth, legume N2 fixation, and soil rhizobial abundance. In the present study, non-legumes dominated the swards, in particular beneath the tree canopy, and legumes represented only 42% of total herbage. A 2-fold biomass reduction was observed in the oldest sown pasture in relation to the medium-age sward (6tDWha(-1)yr(-1)). Overall, competition of pasture growth for light was negligible, but soil rhizobial abundance and symbiotic N2 fixation capacity were highly favored by this environmental factor in the spring and outside the influence of tree canopy. Nitrogen derived from the atmosphere was moderate to high (54-72%) in unsown and sown swards. Inputs of fixed N2 increased from winter to spring due to more favorable climatic conditions (temperature and light intensity) for both rhizobia and vegetation growths. Assuming a constant fixation rate at each seasonal period, N2 fixation capacity increased from about 0.10kgNha(-1) per day in the autumn-winter period to 0.15kgNha(-1) per day in spring. Belowground plant material contributed to 11% of accumulated N in pasture legumes and was not affected by canopy. Size of soil fixing bacteria contributed little to explain pasture legumes N.</style></abstract><notes><style face="normal" font="default" size="100%">The following values have no corresponding Zotero field:&lt;br/&gt;publisher: Elsevier B.V.&lt;br/&gt;accession-num: 25460942</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%">McLellan, Iain</style></author><author><style face="normal" font="default" size="100%">Hursthouse, Andrew</style></author><author><style face="normal" font="default" size="100%">Morrison, Calum</style></author><author><style face="normal" font="default" size="100%">Varela, Adélia</style></author><author><style face="normal" font="default" size="100%">Pereira, Cristina Silva</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Development of a robust chromatographic method for the detection of chlorophenols in cork oak forest soils.</style></title><secondary-title><style face="normal" font="default" size="100%">Environmental monitoring and assessment</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">chlorophenols</style></keyword><keyword><style  face="normal" font="default" size="100%">Cork oak</style></keyword><keyword><style  face="normal" font="default" size="100%">hplc</style></keyword><keyword><style  face="normal" font="default" size="100%">method development</style></keyword><keyword><style  face="normal" font="default" size="100%">NATO Science for peace</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus Suber L</style></keyword><keyword><style  face="normal" font="default" size="100%">soils</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2014</style></year></dates><volume><style face="normal" font="default" size="100%">186</style></volume><pages><style face="normal" font="default" size="100%">1281-1293</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">A major concern for the cork and wine industry is 'cork taint' which is associated with chloroanisoles, the microbial degradation metabolites of chlorophenols. The use of chlorophenolic compounds as pesticides within cork forests was prohibited in 1993 in the European Union (EU) following the introduction of industry guidance. However, cork produced outside the EU is still thought to be affected and simple, robust methods for chlorophenol analysis are required for wider environmental assessment by industry and local environmental regulators. Soil samples were collected from three common-use forests in Tunisia and from one privately owned forest in Sardinia, providing examples of varied management practice and degree of human intervention. These provided challenge samples for the optimisation of a HPLC-UV detection method. It produced recoveries consistently &gt;75 % against a soil CRM (ERM-CC008) for pentachlorophenol. The optimised method, with ultraviolet (diode array) detection is able to separate and quantify 16 different chlorophenols at field concentrations greater than the limits of detection ranging from 6.5 to 191.3 μg/kg (dry weight). Application to a range of field samples demonstrated the absence of widespread contamination in forest soils at sites sampled in Sardinia and Tunisia.</style></abstract><accession-num><style face="normal" font="default" size="100%">24092255</style></accession-num></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%">Paulo, Joana Amaral</style></author><author><style face="normal" font="default" size="100%">Tomé, José</style></author><author><style face="normal" font="default" size="100%">Tomé, Margarida</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Nonlinear fixed and random generalized height–diameter models for Portuguese cork oak stands</style></title><secondary-title><style face="normal" font="default" size="100%">Annals of Forest Science</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">height-diameter relationship</style></keyword><keyword><style  face="normal" font="default" size="100%">model calibration</style></keyword><keyword><style  face="normal" font="default" size="100%">nonlinear fixed effects model</style></keyword><keyword><style  face="normal" font="default" size="100%">nonlinear mixed effects model</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%">2011</style></year></dates><volume><style face="normal" font="default" size="100%">68</style></volume><pages><style face="normal" font="default" size="100%">295-309</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">• Objective The objective of the research was to develop a generalized height–diameter model for Quercus suber L. in Portugal, which can be applied both to undebarked and debarked trees, with diameter at breast height over cork larger than 2.5 cm. • Methods A nonlinear fixed effects model (NLFEM) and a nonlinear mixed effects model (NLMEM) approaches were used. Parameters estimates were obtained using the SAS macro NLINMIX, which uses a linear approximation to the marginal likelihood function by expanding it with a first-order Taylor series on the random effects. The option of expanding on the random effects at their current empirical best linear unbiased predictors (EBLUP) was used. The fitted models were evaluated using an independent data set, together with an existing model specific for undebarked trees. To obtain subject specific predictions with the NLMEM, a conventional and an improved calibration procedures were applied, considering four different tree sub-sampling designs. Both proposed models included dominant height and stand density as covariates to explain plot variability. • Conclusions Validation indicated that, even in the situations where the NLMEM calibration is not possible, this model should be preferred. The differences between the validated models, which were more evident for young stands, were considered. No large differences in predictive accuracy were found between the calibrated NLMEM using the conventional or the improved calibration procedures, for all the considered sub-sampling designs.</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%">Barreca, L.</style></author><author><style face="normal" font="default" size="100%">Marziliano, P. A.</style></author><author><style face="normal" font="default" size="100%">Menguzzato, G.</style></author><author><style face="normal" font="default" size="100%">Scuderi, A.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Analisi strutturale e caratterizzazione della necromassa in sugherete della Calabria</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%">Dead Wood</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus Suber L</style></keyword><keyword><style  face="normal" font="default" size="100%">Stand Structure</style></keyword><keyword><style  face="normal" font="default" size="100%">Structural Index</style></keyword><keyword><style  face="normal" font="default" size="100%">Sustainable Forest Management</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2010</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2010///</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.sisef.it/forest@/show.php?id=628http://www.sisef.it/forest@/pdf/Barreca_628.pdf</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">7</style></volume><pages><style face="normal" font="default" size="100%">158 - 168</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The cork forests are one the most interesting forest ecosystems in the Mediterranean area. Their distribution and ecological characteristics have undergone a significant transformation after the significant changes following the development and establishment of agricultural crops. Currently, only a few stands, which survive in hard to reach places, prove the wide spread distribution of this species was also in the recent past. This study describes the stand structure of some cork forests in Calabria region (southern Italy). In order, to characterize the vertical structure Latham index has been applied, while for the description of the horizontal distribution NBSI group indices has been used. Detailed surveys on dead wood were also conducted determining the occurring volume and its decay stage according to the decay classes system proposed by Hunter. The aim of this study is to provide guidelines for sustainable management of cork forests, improving and promoting the structural complexity and functional efficiency of these forest stands.</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: Dipartimento Gestione dei Sistemi Agrari e Forestali (GESAF), Universit� degli studi Mediterranea di Reggio Calabria, Localit� Feo di Vito, I-89060 Reggio Calabria (Italia)&lt;br/&gt;publisher: SISEF - Italian Society of Silviculture and Forest Ecology</style></notes></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>3</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">FERNÁNDEZ-MANSO, A A</style></author><author><style face="normal" font="default" size="100%">SARMIENTO MAILLO, L A</style></author><author><style face="normal" font="default" size="100%">EZQUERRA BOTICARIO, F J</style></author><author><style face="normal" font="default" size="100%">COBOS MIGUEL, T</style></author><author><style face="normal" font="default" size="100%">GARCÍA FERNÁNDEZ-MIRANDA, M</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Estudio y caracterización de las masas de alcornoque de la provincia de León</style></title><secondary-title><style face="normal" font="default" size="100%">V Congreso Forestal Español</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">el bierzo</style></keyword><keyword><style  face="normal" font="default" size="100%">estructura y dinámica forestal</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%">2009</style></year></dates><pub-location><style face="normal" font="default" size="100%">Avila</style></pub-location><pages><style face="normal" font="default" size="100%">1-13</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">La falta de estudios sobre los alcornocales de la provincia de León hace que se desconozcan aspectos tan relevantes para su gestión sostenible como su distribución espacial, su estructura y dinámica o su estado de regeneración. A pesar de que algunos de los alcornocales leoneses son periódicamente descorchados no podemos hablar de una producción importante en términos económicos. Su importancia radica en sus valores ecológicos y culturales. El presente trabajo inventaría y analiza las 1.945,09 ha de alcornocal presente en la provincia de León localizados en su totalidad entre las comarcas de El Bierzo y la Cabrera. El objetivo del trabajo es obtener la información relevante de cara a la toma de decisiones en relación con las medidas de gestión más adecuadas para la especie. El trabajo presenta la localización geográfica y descripción ecológica de las masas de alcornocal, analiza su estructura y dinámica y estudia los usos actuales para prever su viabilidad futura.</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%">FERNÁNDEZ-MANSO, A. A.</style></author><author><style face="normal" font="default" size="100%">SARMIENTO MAILLO, L. A.</style></author><author><style face="normal" font="default" size="100%">EZQUERRA BOTICARIO, F. J.</style></author><author><style face="normal" font="default" size="100%">COBOS MIGUEL, T.</style></author><author><style face="normal" font="default" size="100%">GARCÍA FERNÁNDEZ-MIRANDA, M.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Estudio y caracterización de las masas de alcornoque de la provincia de León</style></title><secondary-title><style face="normal" font="default" size="100%">V Congreso Forestal Español</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">el bierzo</style></keyword><keyword><style  face="normal" font="default" size="100%">estructura y dinámica forestal</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%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2009///</style></date></pub-dates></dates><pages><style face="normal" font="default" size="100%">1 - 13</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">La falta de estudios sobre los alcornocales de la provincia de León hace que se desconozcan aspectos tan relevantes para su gestión sostenible como su distribución espacial, su estructura y dinámica o su estado de regeneración. A pesar de que algunos de los alcornocales leoneses son periódicamente descorchados no podemos hablar de una producción importante en términos económicos. Su importancia radica en sus valores ecológicos y culturales. El presente trabajo inventaría y analiza las 1.945,09 ha de alcornocal presente en la provincia de León localizados en su totalidad entre las comarcas de El Bierzo y la Cabrera. El objetivo del trabajo es obtener la información relevante de cara a la toma de decisiones en relación con las medidas de gestión más adecuadas para la especie. El trabajo presenta la localización geográfica y descripción ecológica de las masas de alcornocal, analiza su estructura y dinámica y estudia los usos actuales para prever su viabilidad futura.</style></abstract><notes><style face="normal" font="default" size="100%">The following values have no corresponding Zotero field:&lt;br/&gt;periodical: V Congreso Forestal Español&lt;br/&gt;pub-location: Avila</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%">Costa, Augusta</style></author><author><style face="normal" font="default" size="100%">Madeira, Manuel</style></author><author><style face="normal" font="default" size="100%">Oliveira, Ângelo Carvalho</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">The relationship between cork oak growth patterns and soil, slope and drainage in a cork oak woodland in Southern Portugal</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%">cork yield</style></keyword><keyword><style  face="normal" font="default" size="100%">drainage</style></keyword><keyword><style  face="normal" font="default" size="100%">montado</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus Suber L</style></keyword><keyword><style  face="normal" font="default" size="100%">slope</style></keyword><keyword><style  face="normal" font="default" size="100%">Soil</style></keyword><keyword><style  face="normal" font="default" size="100%">tree density</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2008</style></year></dates><volume><style face="normal" font="default" size="100%">255</style></volume><pages><style face="normal" font="default" size="100%">1525-1535</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The inﬂuence of soil type, slope and drainage on tree growth patterns (density, tree size, crown canopy cover and cork yield) was assessed in a cork oak montado, located in Central-western Portugal, based on a GIS approach followed by ﬁeld survey. Five soil groups, that is, Arenosols, Regosols, Podzols, Luvisols and Gleysols, combined in three slope classes (ﬂat, undulating and steep) under two different hydromorphic conditions (normal or deﬁcient) were compared based on ﬁve cork oak stand parameters using ANOVA and PCA tests. The results showed a clear inﬂuence of soil type on cork oak growth patterns (cork yield, basal area, number of trees per hectare, crown canopy cover and circumference at breast height). In Arenosols all parameters showed maximum values and, in contrast, in Gleysols were found the minimum values. For instance, the average of the annual cork production for Gleysols (153 kg ha 1 year 1 ) was only 70% of the expected annual cork production of Arenosols (219 kg ha 1 year 1 ) and the average exploited tree density decreased from 56 trees ha 1 in Arenosols to 44 trees ha 1 in Gleysols, for an average exploited tree density of 53 trees ha 1 for the study area. Slope also seems to inﬂuence the cork oak growth patterns, as signiﬁcant statistical differences were found for cork oak growth parameters between slope classes: steep slopes decreased the cork production, the tree size (circumference at breast height) and the tree density. An overall PCA test showed that three main soil groups could be identiﬁed: (i) Arenosols and Podzols; (ii) Regosols and (iii) Luvisols and Gleysols, showing that the former, which could allow the tree root development, have a positive inﬂuence on the cork oak growth. A two-way analysis of variance, for soil type and slope, showed that the cork yield and the exploited tree density are clearly affected by these two factors interaction.</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%">Costa, Augusta</style></author><author><style face="normal" font="default" size="100%">Madeira, Manuel</style></author><author><style face="normal" font="default" size="100%">Oliveira, Ângelo Carvalho</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">The relationship between cork oak growth patterns and soil, slope and drainage in a cork oak woodland in Southern Portugal</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%">cork yield</style></keyword><keyword><style  face="normal" font="default" size="100%">drainage</style></keyword><keyword><style  face="normal" font="default" size="100%">montado</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus Suber L</style></keyword><keyword><style  face="normal" font="default" size="100%">slope</style></keyword><keyword><style  face="normal" font="default" size="100%">Soil</style></keyword><keyword><style  face="normal" font="default" size="100%">tree density</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2008///</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://linkinghub.elsevier.com/retrieve/pii/S0378112707008754</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">255</style></volume><pages><style face="normal" font="default" size="100%">1525 - 1535</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The inﬂuence of soil type, slope and drainage on tree growth patterns (density, tree size, crown canopy cover and cork yield) was assessed in a cork oak montado, located in Central-western Portugal, based on a GIS approach followed by ﬁeld survey. Five soil groups, that is, Arenosols, Regosols, Podzols, Luvisols and Gleysols, combined in three slope classes (ﬂat, undulating and steep) under two different hydromorphic conditions (normal or deﬁcient) were compared based on ﬁve cork oak stand parameters using ANOVA and PCA tests. The results showed a clear inﬂuence of soil type on cork oak growth patterns (cork yield, basal area, number of trees per hectare, crown canopy cover and circumference at breast height). In Arenosols all parameters showed maximum values and, in contrast, in Gleysols were found the minimum values. For instance, the average of the annual cork production for Gleysols (153 kg ha 1 year 1 ) was only 70% of the expected annual cork production of Arenosols (219 kg ha 1 year 1 ) and the average exploited tree density decreased from 56 trees ha 1 in Arenosols to 44 trees ha 1 in Gleysols, for an average exploited tree density of 53 trees ha 1 for the study area. Slope also seems to inﬂuence the cork oak growth patterns, as signiﬁcant statistical differences were found for cork oak growth parameters between slope classes: steep slopes decreased the cork production, the tree size (circumference at breast height) and the tree density. An overall PCA test showed that three main soil groups could be identiﬁed: (i) Arenosols and Podzols; (ii) Regosols and (iii) Luvisols and Gleysols, showing that the former, which could allow the tree root development, have a positive inﬂuence on the cork oak growth. A two-way analysis of variance, for soil type and slope, showed that the cork yield and the exploited tree density are clearly affected by these two factors interaction.</style></abstract><issue><style face="normal" font="default" size="100%">5-6</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%">Leal, Sofia</style></author><author><style face="normal" font="default" size="100%">Nunes, Elsa</style></author><author><style face="normal" font="default" size="100%">Pereira, Helena</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Cork oak (Quercus suber L.) wood growth and vessel characteristics variations in relation to climate and cork harvesting</style></title><secondary-title><style face="normal" font="default" size="100%">European Journal of Forest Research</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">cork harvesting</style></keyword><keyword><style  face="normal" font="default" size="100%">Dendrochronology</style></keyword><keyword><style  face="normal" font="default" size="100%">Precipitation</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus Suber L</style></keyword><keyword><style  face="normal" font="default" size="100%">tree rings</style></keyword><keyword><style  face="normal" font="default" size="100%">wood anatomy</style></keyword><keyword><style  face="normal" font="default" size="100%">wood vessels</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2007</style></year></dates><volume><style face="normal" font="default" size="100%">127</style></volume><pages><style face="normal" font="default" size="100%">33-41</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Variations in tree ring growth of Quercus suber L. were analysed using dendrochronological techniques on cork oak discs from trees harvested in the cork producing region of Alentejo, Portugal. A tree-ring chronology containing a strong common signal and covering the period from 1970 to 1995 was build for ca. 30-year-old cork oaks never submitted to cork harvesting using 14 trees that crossdated satisfactorily out of 30 sampled trees. The tree ring indices correlated positively with September temperature (r = 0.48, P &lt; 0.05) and very strongly with precipitation totals from previous October until current February (r = 0.82, P &lt; 0.001) showing that the water stored in the soil during the autumn and winter months prior to the growing season has a primordial effect on the growth of the given season. The effects of cork harvesting were analysed by comparing mean ring width, mean annual vessel area, vessel density (nvessels/mm 2 ), and vessel coverage (percentage of transverse surface occupied by vessels) between three mature cork oak trees and three young trees, for the period from 1987 to 1996, corresponding to the growth between two consecutive cork removals in the case of mature trees. In 1988, 1989 and 1996 (corresponding to the ﬁrst and second years after cork removal, and 1996 to a year of cork removal), the ratios between ring widths of young versus mature trees was twice that for the rest of the period. However, an effect of cork removal indicated by eventual alterations in vessel size and distribution in the wood rings corresponding to the years 1988, 1989 and 1996 in the mature cork oaks was not observed.</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%">Cordeiro, N.</style></author><author><style face="normal" font="default" size="100%">Neto, C. P.</style></author><author><style face="normal" font="default" size="100%">Rocha, J.</style></author><author><style face="normal" font="default" size="100%">Belgacem, M. N.</style></author><author><style face="normal" font="default" size="100%">Gandini, A.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">The organosolv fractionation of cork components</style></title><secondary-title><style face="normal" font="default" size="100%">HOLZFORSCHUNG</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">C-13 NMR</style></keyword><keyword><style  face="normal" font="default" size="100%">Cork</style></keyword><keyword><style  face="normal" font="default" size="100%">ethanol/water extraction</style></keyword><keyword><style  face="normal" font="default" size="100%">FTIR</style></keyword><keyword><style  face="normal" font="default" size="100%">organosolv fractionation</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus Suber L</style></keyword><keyword><style  face="normal" font="default" size="100%">suberin</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><volume><style face="normal" font="default" size="100%">56</style></volume><pages><style face="normal" font="default" size="100%">135 - 142</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Extractive-free cork from Quercus suber L. was submitted to organosolv fractionation and the effects of different process variables, such as ethanol/water ratio, temperature, time and the presence of acidic or alkaline catalysts, were studied. The variation of the relative proportions of extracted components, as a function of the processing conditions, could thus be established. Whereas the addition of 0.1 M acetic acid only increased the yield of extracted materials from about 15 to 23 %, the use of sodium hydroxide, at the same concentration, produced a jump to 76 %. In the case of the alkaline organosolv fractionation. an increase in process temperature, time and catalyst concentration led to an increase in the extraction yield, although in some cases this increase did not follow a sustained trend, as in the case of reaction time. Increasing the ethanol/water ratio led to a higher selectivity in favour of suberin extraction. Residual cork from different organosolv processes was characterised by FTIR and C-13 solid-state NMR. The latter technique provided some valuable information about both process selectivity and cork morphology, particularly with respect to the positioning of suberin macromolecules in the cell wall.</style></abstract><issue><style face="normal" font="default" size="100%">2</style></issue><notes><style face="normal" font="default" size="100%">The following values have no corresponding Zotero field:&lt;br/&gt;pub-location: GENTHINER STRASSE 13, D-10785 BERLIN, GERMANY&lt;br/&gt;publisher: WALTER DE GRUYTER &amp; CO</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%">Evaristo, Isabel Maria</style></author><author><style face="normal" font="default" size="100%">Leitão, Maria Cecília</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Identificação e Quantificação por DAD-HPLC, da Fracção Fenólica Contida em Folhas de Quercus suber L.</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%">avoir un rôle important</style></keyword><keyword><style  face="normal" font="default" size="100%">caffeic acid</style></keyword><keyword><style  face="normal" font="default" size="100%">car ces</style></keyword><keyword><style  face="normal" font="default" size="100%">catechin</style></keyword><keyword><style  face="normal" font="default" size="100%">dans la présente étude</style></keyword><keyword><style  face="normal" font="default" size="100%">défense des</style></keyword><keyword><style  face="normal" font="default" size="100%">des feuilles de chêne</style></keyword><keyword><style  face="normal" font="default" size="100%">détermination des composés phénoliques</style></keyword><keyword><style  face="normal" font="default" size="100%">ferulic acid</style></keyword><keyword><style  face="normal" font="default" size="100%">gallic acid</style></keyword><keyword><style  face="normal" font="default" size="100%">liège</style></keyword><keyword><style  face="normal" font="default" size="100%">méthode analytique pour la</style></keyword><keyword><style  face="normal" font="default" size="100%">on a developpé une</style></keyword><keyword><style  face="normal" font="default" size="100%">p-coumaric acid</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus Suber L</style></keyword><keyword><style  face="normal" font="default" size="100%">résumé</style></keyword><keyword><style  face="normal" font="default" size="100%">substances sont susceptibles d</style></keyword><keyword><style  face="normal" font="default" size="100%">sur les mécanismes de</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2001</style></year></dates><publisher><style face="normal" font="default" size="100%">scielopt</style></publisher><volume><style face="normal" font="default" size="100%">9</style></volume><pages><style face="normal" font="default" size="100%">135-141</style></pages><isbn><style face="normal" font="default" size="100%">0870-6352 UL - http://www.scielo.gpeari.mctes.pt/scielo.php?script=sci_arttext&amp;pid=S0870-63522001000200002&amp;nrm=iso</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">In this study, an analytical method has been developed for the determination of phenolic compounds since they are related with disease and pests plant resistance mechanisms. The components of the hydrolysed extract (gallic acid, ellagic acid, catechin, epicatechin, caffeic acid, p-coumaric acid and ferulic acid) have been resolved and identified by DAD-HPLC based on their retention times and spectral data. For quantifications, the external standard method was used.</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%">Evaristo, Isabel Maria</style></author><author><style face="normal" font="default" size="100%">Leitão, Maria Cecília</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Identificação e Quantificação por DAD-HPLC, da Fracção Fenólica Contida em Folhas de Quercus suber L.</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%">avoir un rôle important</style></keyword><keyword><style  face="normal" font="default" size="100%">caffeic acid</style></keyword><keyword><style  face="normal" font="default" size="100%">car ces</style></keyword><keyword><style  face="normal" font="default" size="100%">catechin</style></keyword><keyword><style  face="normal" font="default" size="100%">dans la présente étude</style></keyword><keyword><style  face="normal" font="default" size="100%">défense des</style></keyword><keyword><style  face="normal" font="default" size="100%">des feuilles de chêne</style></keyword><keyword><style  face="normal" font="default" size="100%">détermination des composés phénoliques</style></keyword><keyword><style  face="normal" font="default" size="100%">ferulic acid</style></keyword><keyword><style  face="normal" font="default" size="100%">gallic acid</style></keyword><keyword><style  face="normal" font="default" size="100%">liège</style></keyword><keyword><style  face="normal" font="default" size="100%">méthode analytique pour la</style></keyword><keyword><style  face="normal" font="default" size="100%">on a developpé une</style></keyword><keyword><style  face="normal" font="default" size="100%">p-coumaric acid</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus Suber L</style></keyword><keyword><style  face="normal" font="default" size="100%">résumé</style></keyword><keyword><style  face="normal" font="default" size="100%">substances sont susceptibles d</style></keyword><keyword><style  face="normal" font="default" size="100%">sur les mécanismes de</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%">9</style></volume><pages><style face="normal" font="default" size="100%">135 - 141</style></pages><isbn><style face="normal" font="default" size="100%">0870-6352 UL - http://www.scielo.gpeari.mctes.pt/scielo.php?script=sci_arttext&amp;pid=S0870-63522001000200002&amp;nrm=iso</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">In this study, an analytical method has been developed for the determination of phenolic compounds since they are related with disease and pests plant resistance mechanisms. The components of the hydrolysed extract (gallic acid, ellagic acid, catechin, epicatechin, caffeic acid, p-coumaric acid and ferulic acid) have been resolved and identified by DAD-HPLC based on their retention times and spectral data. For quantifications, the external standard method was used.</style></abstract><issue><style face="normal" font="default" size="100%">2</style></issue><notes><style face="normal" font="default" size="100%">The following values have no corresponding Zotero field:&lt;br/&gt;publisher: scielopt</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%">Cordeiro, Sonia</style></author><author><style face="normal" font="default" size="100%">Moreira, Carmen</style></author><author><style face="normal" font="default" size="100%">Ferreira, R. P.</style></author><author><style face="normal" font="default" size="100%">Carvalho, J. P. F.</style></author><author><style face="normal" font="default" size="100%">Pinto, T. M. S.</style></author><author><style face="normal" font="default" size="100%">Pereira, J. M. G. Torres</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Propagação Vegetativa por Estacaria do Sobreiro (Quercus suber L.)</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%">propagule</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus Suber L</style></keyword><keyword><style  face="normal" font="default" size="100%">rooting factors</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%">9</style></volume><pages><style face="normal" font="default" size="100%">199 - 203</style></pages><isbn><style face="normal" font="default" size="100%">0870-6352 UL - http://www.scielo.gpeari.mctes.pt/scielo.php?script=sci_arttext&amp;pid=S0870-63522001000200007&amp;nrm=iso</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The PAMAF-IED 8110 (1997-2000) project, was used to verify the rhizogenic capacity of Quercus suber, throughout the study of rhizogenic behaviour of different kinds of propagule considering several rooting factors. Due to the preliminary state of statistical data analysis, these conclusions are at an early stage, consisting only in first indications to a later definition of the best combination of &quot;propagule x rooting factors&quot;</style></abstract><issue><style face="normal" font="default" size="100%">2</style></issue><notes><style face="normal" font="default" size="100%">The following values have no corresponding Zotero field:&lt;br/&gt;publisher: scielopt</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%">Cordeiro, Sonia</style></author><author><style face="normal" font="default" size="100%">Moreira, Carmen</style></author><author><style face="normal" font="default" size="100%">Ferreira, R P</style></author><author><style face="normal" font="default" size="100%">Carvalho, J P F</style></author><author><style face="normal" font="default" size="100%">Pinto, T M S</style></author><author><style face="normal" font="default" size="100%">Pereira, J M G Torres</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Propagação Vegetativa por Estacaria do Sobreiro (Quercus suber L.)</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%">propagule</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus Suber L</style></keyword><keyword><style  face="normal" font="default" size="100%">rooting factors</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2001</style></year></dates><publisher><style face="normal" font="default" size="100%">scielopt</style></publisher><volume><style face="normal" font="default" size="100%">9</style></volume><pages><style face="normal" font="default" size="100%">199-203</style></pages><isbn><style face="normal" font="default" size="100%">0870-6352 UL - http://www.scielo.gpeari.mctes.pt/scielo.php?script=sci_arttext&amp;pid=S0870-63522001000200007&amp;nrm=iso</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The PAMAF-IED 8110 (1997-2000) project, was used to verify the rhizogenic capacity of Quercus suber, throughout the study of rhizogenic behaviour of different kinds of propagule considering several rooting factors. Due to the preliminary state of statistical data analysis, these conclusions are at an early stage, consisting only in first indications to a later definition of the best combination of &quot;propagule x rooting factors&quot;</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%">Courtois, Michèle</style></author><author><style face="normal" font="default" size="100%">Masson, Philippe</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Relations entre la qualité du liège, sa composition minérale et la composition minérale des feuilles du chêne-liège (Quercus suber L.)</style></title><secondary-title><style face="normal" font="default" size="100%">Ann. For. Sci.</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Cork</style></keyword><keyword><style  face="normal" font="default" size="100%">inorganic content</style></keyword><keyword><style  face="normal" font="default" size="100%">leaf</style></keyword><keyword><style  face="normal" font="default" size="100%">Quality</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%">1999</style></year></dates><volume><style face="normal" font="default" size="100%">56</style></volume><pages><style face="normal" font="default" size="100%">521-527</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Relationships between the quality of cork, its inorganic content and the inorganic content of the leaves of the cork-oak (Quercus suber L.). The aim of this work is to set up a relationship between the quality of cork, its inorganic content and the inorganic content of the leaves of the cork-oak. The mineral contents of both leaves and cork were identified for a range of elements (nitrogen, phosphorus, potassium, calcium, magnesium, iron, copper, zinc and manganese). The quality of the cork was evaluated by experts in the cork industry on the basis of visual assessment of cork stoppers resulting from each tree. A study of correlations between the cork inorganic contents and the quality of cork demonstrates that, among those measures, only the potassium content of cork is related to the cork quality. The cork quality seems to be independent of the leaf inorganic content, which is held to be an indicator of the cork-oak mineral nutrition. (© Inra/Elsevier, Paris.)</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%">Courtois, Michèle</style></author><author><style face="normal" font="default" size="100%">Masson, Philippe</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Relations entre la qualité du liège, sa composition minérale et la composition minérale des feuilles du chêne-liège (Quercus suber L.)</style></title><secondary-title><style face="normal" font="default" size="100%">Ann. For. Sci.</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Cork</style></keyword><keyword><style  face="normal" font="default" size="100%">inorganic content</style></keyword><keyword><style  face="normal" font="default" size="100%">leaf</style></keyword><keyword><style  face="normal" font="default" size="100%">Quality</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%">1999</style></year><pub-dates><date><style  face="normal" font="default" size="100%">1999///</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://dx.doi.org/10.1051/forest:19990609</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">56</style></volume><pages><style face="normal" font="default" size="100%">521 - 527</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Relationships between the quality of cork, its inorganic content and the inorganic content of the leaves of the cork-oak (Quercus suber L.). The aim of this work is to set up a relationship between the quality of cork, its inorganic content and the inorganic content of the leaves of the cork-oak. The mineral contents of both leaves and cork were identified for a range of elements (nitrogen, phosphorus, potassium, calcium, magnesium, iron, copper, zinc and manganese). The quality of the cork was evaluated by experts in the cork industry on the basis of visual assessment of cork stoppers resulting from each tree. A study of correlations between the cork inorganic contents and the quality of cork demonstrates that, among those measures, only the potassium content of cork is related to the cork quality. The cork quality seems to be independent of the leaf inorganic content, which is held to be an indicator of the cork-oak mineral nutrition. (© Inra/Elsevier, Paris.)</style></abstract><issue><style face="normal" font="default" size="100%">6</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%">Celestino, Cristina</style></author><author><style face="normal" font="default" size="100%">Picazo, M L</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Influence of 50 Hz electromagnetic fields on recurrent embryogenesis and germination of cork oak somatic embryos</style></title><secondary-title><style face="normal" font="default" size="100%">Plant cell, tissue and …</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">bioelectromagnetism</style></keyword><keyword><style  face="normal" font="default" size="100%">elf magnetic fields</style></keyword><keyword><style  face="normal" font="default" size="100%">germination</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus Suber L</style></keyword><keyword><style  face="normal" font="default" size="100%">Somatic embryogenesis</style></keyword><keyword><style  face="normal" font="default" size="100%">tissue culture</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1998</style></year></dates><volume><style face="normal" font="default" size="100%">54</style></volume><pages><style face="normal" font="default" size="100%">65-69</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Plant tissue culture techniques are carried out under environmentally controlled conditions in phytotrons. However, electric components of phytotrons generate electromagnetic ﬁelds that may act as a environmental factor inﬂuencing plant growth and morphogenesis. Isolated somatic embryos of Quercus suber, picked from embryogenic lines, were chronically exposed to a 50 Hz and 15 µT electromagnetic ﬁeld generated in a Helmholtz-coil system for 8 weeks, in order to examine if the extremely low frequency (ELF) magnetic ﬁeld (MF) affected the morphogenic behaviour of embryogenic cultures during recurrent embryogenesis. Germination of somatic embryos from genotype G7.1 was carried out under the same electromagnetic ﬁeld, and also under conditions in which the local geomagnetic ﬁeld was suppressed. The ELF MF did not inﬂuence the growth of embryogenic clumps of the assayed genotypes, but reduced the number of detachable embryos produced by genotype G3.27. The ELF MF did not modify the percentages of germination or plant formation of somatic embryos. However, somatic embryos had better germination when cultured under the suppressed geomagnetic ﬁeld condition.</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%">Celestino, Cristina</style></author><author><style face="normal" font="default" size="100%">Picazo, M. L.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Influence of 50 Hz electromagnetic fields on recurrent embryogenesis and germination of cork oak somatic embryos</style></title><secondary-title><style face="normal" font="default" size="100%">Plant cell, tissue and …</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">bioelectromagnetism</style></keyword><keyword><style  face="normal" font="default" size="100%">elf magnetic fields</style></keyword><keyword><style  face="normal" font="default" size="100%">germination</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus Suber L</style></keyword><keyword><style  face="normal" font="default" size="100%">Somatic embryogenesis</style></keyword><keyword><style  face="normal" font="default" size="100%">tissue culture</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1998</style></year><pub-dates><date><style  face="normal" font="default" size="100%">1998///</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.springerlink.com/index/J63G08P8G37N7373.pdf</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">54</style></volume><pages><style face="normal" font="default" size="100%">65 - 69</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Plant tissue culture techniques are carried out under environmentally controlled conditions in phytotrons. However, electric components of phytotrons generate electromagnetic ﬁelds that may act as a environmental factor inﬂuencing plant growth and morphogenesis. Isolated somatic embryos of Quercus suber, picked from embryogenic lines, were chronically exposed to a 50 Hz and 15 µT electromagnetic ﬁeld generated in a Helmholtz-coil system for 8 weeks, in order to examine if the extremely low frequency (ELF) magnetic ﬁeld (MF) affected the morphogenic behaviour of embryogenic cultures during recurrent embryogenesis. Germination of somatic embryos from genotype G7.1 was carried out under the same electromagnetic ﬁeld, and also under conditions in which the local geomagnetic ﬁeld was suppressed. The ELF MF did not inﬂuence the growth of embryogenic clumps of the assayed genotypes, but reduced the number of detachable embryos produced by genotype G3.27. The ELF MF did not modify the percentages of germination or plant formation of somatic embryos. However, somatic embryos had better germination when cultured under the suppressed geomagnetic ﬁeld condition.</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%">MANSOUR, A.</style></author><author><style face="normal" font="default" size="100%">de FAŸ, E.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Rhythmic growth rings of wood and their relationship with the foliage in oak seedlings grown in a favourable environment</style></title><secondary-title><style face="normal" font="default" size="100%">Annals of botany</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">allometric relationship</style></keyword><keyword><style  face="normal" font="default" size="100%">juvenile wood</style></keyword><keyword><style  face="normal" font="default" size="100%">leaf area</style></keyword><keyword><style  face="normal" font="default" size="100%">lignification</style></keyword><keyword><style  face="normal" font="default" size="100%">oak seedling</style></keyword><keyword><style  face="normal" font="default" size="100%">periodic structure</style></keyword><keyword><style  face="normal" font="default" size="100%">quercus robur l</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus Suber L</style></keyword><keyword><style  face="normal" font="default" size="100%">rhythmic growth ring</style></keyword><keyword><style  face="normal" font="default" size="100%">unit of extension</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1998</style></year><pub-dates><date><style  face="normal" font="default" size="100%">1998///</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://aob.oxfordjournals.org/content/82/1/89.short</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">82</style></volume><pages><style face="normal" font="default" size="100%">89 - 96</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">{{The anatomy of wood was studied in Quercus robur L. and Quercus suber L. seedlings exhibiting 3±8 units of extension, each with a tier of photosynthesizing leaves in their upper parts, generated as the result of rhythmic shoot growth under favourable conditions. At all the axis levels examined (i.e. the base of each of the diﬀerent units of extension, four other equidistant levels within the ®rst unit of extension and the upper part of the taproot), the wood displayed rings when treated with Wiesner reagents. This indicated cinnamaldehyde groups present in lignins. No rings appeared when the Mau$le reaction was used for speci®c detection of syringyl subunits in lignins. A trend towards a periodical arrangement of xylem parenchyma bands was also found when sections were treated with I # }KI. The number of rings coincided with the number of leaf tiers above the level of measurement, and did not vary inside the ®rst unit of extension. Thus, the rings are called rhythmic growth rings. In sections of the ®rst and the second units of extension, and in the taproot, the area and width of a given rhythmic growth ring were highly correlated with the total area of leaves present above the level of measurement at the presumed time of growth ring formation. Moreover, stem diameter at the base of the units of extension was highly correlated with the leaf area above. These results indicate that diﬀerentiation of xylem, particularly its ligni®cation, varies rhythmically in oak seedlings. They imply that wood production is linked to the photosynthesizing and}or transpiring area of the plant. Thus, during a growth cycle of Q. robur and Q. suber seedlings, there appears to be integration of the primary metabolic activities with the laying down of rhythmic growth rings</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%">MANSOUR, A</style></author><author><style face="normal" font="default" size="100%">de FAŸ, E</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Rhythmic growth rings of wood and their relationship with the foliage in oak seedlings grown in a favourable environment</style></title><secondary-title><style face="normal" font="default" size="100%">Annals of botany</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">allometric relationship</style></keyword><keyword><style  face="normal" font="default" size="100%">juvenile wood</style></keyword><keyword><style  face="normal" font="default" size="100%">leaf area</style></keyword><keyword><style  face="normal" font="default" size="100%">lignification</style></keyword><keyword><style  face="normal" font="default" size="100%">oak seedling</style></keyword><keyword><style  face="normal" font="default" size="100%">periodic structure</style></keyword><keyword><style  face="normal" font="default" size="100%">quercus robur l</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus Suber L</style></keyword><keyword><style  face="normal" font="default" size="100%">rhythmic growth ring</style></keyword><keyword><style  face="normal" font="default" size="100%">unit of extension</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1998</style></year></dates><volume><style face="normal" font="default" size="100%">82</style></volume><pages><style face="normal" font="default" size="100%">89-96</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">{{The anatomy of wood was studied in Quercus robur L. and Quercus suber L. seedlings exhibiting 3±8 units of extension, each with a tier of photosynthesizing leaves in their upper parts, generated as the result of rhythmic shoot growth under favourable conditions. At all the axis levels examined (i.e. the base of each of the diﬀerent units of extension, four other equidistant levels within the ®rst unit of extension and the upper part of the taproot), the wood displayed rings when treated with Wiesner reagents. This indicated cinnamaldehyde groups present in lignins. No rings appeared when the Mau$le reaction was used for speci®c detection of syringyl subunits in lignins. A trend towards a periodical arrangement of xylem parenchyma bands was also found when sections were treated with I # }KI. The number of rings coincided with the number of leaf tiers above the level of measurement, and did not vary inside the ®rst unit of extension. Thus, the rings are called rhythmic growth rings. In sections of the ®rst and the second units of extension, and in the taproot, the area and width of a given rhythmic growth ring were highly correlated with the total area of leaves present above the level of measurement at the presumed time of growth ring formation. Moreover, stem diameter at the base of the units of extension was highly correlated with the leaf area above. These results indicate that diﬀerentiation of xylem, particularly its ligni®cation, varies rhythmically in oak seedlings. They imply that wood production is linked to the photosynthesizing and}or transpiring area of the plant. Thus, during a growth cycle of Q. robur and Q. suber seedlings, there appears to be integration of the primary metabolic activities with the laying down of rhythmic growth rings</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%">Caldentey, Paloma</style></author><author><style face="normal" font="default" size="100%">Fumi, Maria Daria</style></author><author><style face="normal" font="default" size="100%">Mazzoleni, Valeria</style></author><author><style face="normal" font="default" size="100%">Careri, Maria</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Volatile compounds produced by microorganisms isolated from cork</style></title><secondary-title><style face="normal" font="default" size="100%">Flavour and Fragrance Journal</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Cork</style></keyword><keyword><style  face="normal" font="default" size="100%">microbial growth</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus Suber L</style></keyword><keyword><style  face="normal" font="default" size="100%">volatile components</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1998</style></year><pub-dates><date><style  face="normal" font="default" size="100%">1998///</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://doi.wiley.com/10.1002/(SICI)1099-1026(199805/06)13:3&lt;185::AID-FFJ723&gt;3.0.CO;2-W</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">13</style></volume><pages><style face="normal" font="default" size="100%">185 - 188</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Microorganisms present on cork (i.e. the reproduction bark of Quercus suber L.) can produce odorous compounds aecting the quality of cork stoppers. This work aims to contribute to the study of the correlation between microbial growth and formation of volatile compounds in the cork. Dierent strains of microorganisms were cultivated on both malt extract and cork, and the odour of the culture was described by a panel. The volatile compounds were isolated directly from the culture media by a dynamic headspace technique followed by adsorption on to Tenax traps. The volatiles were identi®ed by GC±MS: 63 substances were identi®ed in malt extract cultures, mainly consisting of carbonyl compounds (16), alcohols (16), and sesquiterpenes (13). Cultures on cork produced only 12 volatile compounds, more than half being sesquiterpenes. Sensory evaluation con®rmed that cork is an unfavourable culture medium if compared with malt extract.</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%">Neto, C P</style></author><author><style face="normal" font="default" size="100%">Cordeiro, N</style></author><author><style face="normal" font="default" size="100%">Seca, A</style></author><author><style face="normal" font="default" size="100%">Domingues, F</style></author><author><style face="normal" font="default" size="100%">Gandini, A</style></author><author><style face="normal" font="default" size="100%">Robert, D</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Isolation and characterization of a lignin-like polymer of the cork of Quercus suber L.</style></title><secondary-title><style face="normal" font="default" size="100%">HOLZFORSCHUNG</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Cork</style></keyword><keyword><style  face="normal" font="default" size="100%">lignin-like polymer</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus Suber L</style></keyword><keyword><style  face="normal" font="default" size="100%">suberin</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1996</style></year></dates><publisher><style face="normal" font="default" size="100%">WALTER DE GRUYTER &amp; CO</style></publisher><pub-location><style face="normal" font="default" size="100%">GENTHINER STRASSE 13, D-10785 BERLIN, GERMANY</style></pub-location><volume><style face="normal" font="default" size="100%">50</style></volume><pages><style face="normal" font="default" size="100%">563-568</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">A lignin-like polymer was successfully extracted from the cork of Quercus suber L. using an organosolv-based technique. This material was characterized by elemental analysis, functional group analysis, nitrobenzene oxidation followed by HPLC analysis of the oxidation products, FTIR and liquid C-13 NMR. The evidence thus obtained indicated that the extracted material was composed mainly of a lignin-like polymer covalently bound to residual aliphatic structures which are not present in common lignins and which have been assigned to suberin. The latter is likely to be attached to the oxygenated side chains of the phenolic polymer but bonding through the aromatic ring can also be envisaged. No residual carbohydrates were detected. The phenolic polymer, composed mainly of guaiacyl-type units and small amounts of syringyl-type units, had a low methoxy content and a high degree of condensation. This polymer showed the presence of a fraction containing C6Cn units with n &lt; 3 or even n &lt; 2.</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%">Robert, B.</style></author><author><style face="normal" font="default" size="100%">Caritat, A.</style></author><author><style face="normal" font="default" size="100%">Bertoni, G.</style></author><author><style face="normal" font="default" size="100%">Vilar, L.</style></author><author><style face="normal" font="default" size="100%">Molinas, M.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Nutrient content and seasonal fluctuations in the leaf component of coark-oak (Quercus suber L.) litterfall</style></title><secondary-title><style face="normal" font="default" size="100%">Plant Ecology</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">litterfall</style></keyword><keyword><style  face="normal" font="default" size="100%">nutrient return</style></keyword><keyword><style  face="normal" font="default" size="100%">nutrients in leaves</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus Suber L</style></keyword><keyword><style  face="normal" font="default" size="100%">retranslocation</style></keyword><keyword><style  face="normal" font="default" size="100%">seasonal trends</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1996</style></year><pub-dates><date><style  face="normal" font="default" size="100%">1996///</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.springerlink.com/index/l2851v1n55330726.pdf</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">122</style></volume><pages><style face="normal" font="default" size="100%">29 - 35</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Nutrient content and seasonality of the leaf component in cork-oak litterfal were studied over a two year period in two cork-oak forest sites differing in biomass and edaphic condition in the north-eastern Iberian peninsula. Fallen senescent leaves compared to young leaves showed higher non-mobile nutrient concentrations and lower mobile nutrient concentrations, specially P, N, K, and Mg. At both sites, seasonal fluctuations affected both leaf production and leaf mineral content. The maximum leaf fall period correspond to the start of the vegetative growth and to the lowest N and P concentration in the falling leaves. The opposite was true for the winter, when litterfal was minimal and N and P content in falling leaves was at a maximum. The comparison between falling leaves and canopy leaves suggests that the analysis of fallen leaves can be a useful measure of N and P nutrition in cork-oak. We found site dependent differences in nutrient content and nutrient remobilization. In comparison with Q. ilex, although litter production was in the same range, nutrient retranslocation was greater for Q. suber.</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%">Robert, B</style></author><author><style face="normal" font="default" size="100%">Caritat, A</style></author><author><style face="normal" font="default" size="100%">Bertoni, G</style></author><author><style face="normal" font="default" size="100%">Vilar, L</style></author><author><style face="normal" font="default" size="100%">Molinas, M</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Nutrient content and seasonal fluctuations in the leaf component of coark-oak (Quercus suber L.) litterfall</style></title><secondary-title><style face="normal" font="default" size="100%">Plant Ecology</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">litterfall</style></keyword><keyword><style  face="normal" font="default" size="100%">nutrient return</style></keyword><keyword><style  face="normal" font="default" size="100%">nutrients in leaves</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus Suber L</style></keyword><keyword><style  face="normal" font="default" size="100%">retranslocation</style></keyword><keyword><style  face="normal" font="default" size="100%">seasonal trends</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1996</style></year></dates><volume><style face="normal" font="default" size="100%">122</style></volume><pages><style face="normal" font="default" size="100%">29-35</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Nutrient content and seasonality of the leaf component in cork-oak litterfal were studied over a two year period in two cork-oak forest sites differing in biomass and edaphic condition in the north-eastern Iberian peninsula. Fallen senescent leaves compared to young leaves showed higher non-mobile nutrient concentrations and lower mobile nutrient concentrations, specially P, N, K, and Mg. At both sites, seasonal fluctuations affected both leaf production and leaf mineral content. The maximum leaf fall period correspond to the start of the vegetative growth and to the lowest N and P concentration in the falling leaves. The opposite was true for the winter, when litterfal was minimal and N and P content in falling leaves was at a maximum. The comparison between falling leaves and canopy leaves suggests that the analysis of fallen leaves can be a useful measure of N and P nutrition in cork-oak. We found site dependent differences in nutrient content and nutrient remobilization. In comparison with Q. ilex, although litter production was in the same range, nutrient retranslocation was greater for Q. suber.</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%">Werner, Christiane</style></author><author><style face="normal" font="default" size="100%">Correia, O</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Photoinhibition in cork-oak leaves under stress: influence of the bark-stripping on the chlorophyll fluorescence emission inQuercus suber L.</style></title><secondary-title><style face="normal" font="default" size="100%">Trees-Structure and Function</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">bark-stripping</style></keyword><keyword><style  face="normal" font="default" size="100%">fluorescence emission</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus Suber L</style></keyword><keyword><style  face="normal" font="default" size="100%">water relations</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1996</style></year></dates><volume><style face="normal" font="default" size="100%">10</style></volume><pages><style face="normal" font="default" size="100%">288-292</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Quercus suber is the primary source for industrial cork and becomes bark-stripped every 9 – 10 years. Recurring cork extraction is a major stress factor and the large water loss from the stripped trunk surface may affect the water balance and tree productivity. To evaluate the effect of bark-stripping, fluorescence emission and stomatal conductance of leaves were determined in groups of barkstripped and control trees. Fv/Fm ratio was found to be significantly lower in bark-stripped trees indicating a reduced photosynthetic efficiency of PSII. Photosynthesis was not found to be stomata limited. The reduction in Fv/Fm resulted from a decline in maximum and variable fluorescence while the initial fluorescence of the darkadapted state (Fo) remained constant. A general decline in photosynthetic efficiency of PSII was found in all trees during the summer, probably reflecting the prolonged environmental stresses during a hot and dry season. Additional stress caused by the bark-stripping seems to enhance the susceptibility to photoinhibition of the trees.</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%">Werner, Christiane</style></author><author><style face="normal" font="default" size="100%">Correia, O.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Photoinhibition in cork-oak leaves under stress: influence of the bark-stripping on the chlorophyll fluorescence emission inQuercus suber L.</style></title><secondary-title><style face="normal" font="default" size="100%">Trees-Structure and Function</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">bark-stripping</style></keyword><keyword><style  face="normal" font="default" size="100%">fluorescence emission</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus Suber L</style></keyword><keyword><style  face="normal" font="default" size="100%">water relations</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1996</style></year><pub-dates><date><style  face="normal" font="default" size="100%">1996///</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.springerlink.com/index/118108355N100701.pdf</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">10</style></volume><pages><style face="normal" font="default" size="100%">288 - 292</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Quercus suber is the primary source for industrial cork and becomes bark-stripped every 9 – 10 years. Recurring cork extraction is a major stress factor and the large water loss from the stripped trunk surface may affect the water balance and tree productivity. To evaluate the effect of bark-stripping, fluorescence emission and stomatal conductance of leaves were determined in groups of barkstripped and control trees. Fv/Fm ratio was found to be significantly lower in bark-stripped trees indicating a reduced photosynthetic efficiency of PSII. Photosynthesis was not found to be stomata limited. The reduction in Fv/Fm resulted from a decline in maximum and variable fluorescence while the initial fluorescence of the darkadapted state (Fo) remained constant. A general decline in photosynthetic efficiency of PSII was found in all trees during the summer, probably reflecting the prolonged environmental stresses during a hot and dry season. Additional stress caused by the bark-stripping seems to enhance the susceptibility to photoinhibition of the trees.</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%">Orgeas, J</style></author><author><style face="normal" font="default" size="100%">Bonin, G</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Variabilité des nutriments foliaires de Quercus suber L dans différentes situations écologiques dans le massif des Maures (Var, France), et relations avec la production de liège</style></title><secondary-title><style face="normal" font="default" size="100%">Ann. For. Sci.</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Cork Production</style></keyword><keyword><style  face="normal" font="default" size="100%">disturbance</style></keyword><keyword><style  face="normal" font="default" size="100%">ecological conditions</style></keyword><keyword><style  face="normal" font="default" size="100%">foliar nutrients</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%">1996</style></year></dates><volume><style face="normal" font="default" size="100%">53</style></volume><pages><style face="normal" font="default" size="100%">615-624</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Variability of foliar nutrient contents of Quercus suber L in several ecological conditions in the Maures Mountains (Var, France), and relations with cork production. A monitoring of foliar nutrients has been undertaken on cork-oaks (Quercus suber L), in the Maures Mountains (Var, France). Simultaneously, the thickness of cork age rings has been studied to define the relationship of the cork production to nutrient contents under different ecological conditions. Foliar concentrations of ions evolved according to the season, the degradation state and the xericity of plots. Nitrogen appeared proportional to the physiological activity of the leaf, while calcium and potassium were stocked gradually. The calcium-magnesium antagonism was confirmed. Furthermore, changes of the nutrient concentrations in the undergrowth-clearing sites are reduced from the spring resumption of the metabolism. The growth of primary cork is linear with time, irrespective of year, climatic conditions and perturbations. The secondary (or reproductive) cork production is not linear with time and the age of trees, but it remains much higher than the primary cork production. The higher secondary cork productions are linked to the high contents of potassium and nitrogen, and to the moist and weakly disturbed plots. Magnesium is linked to small width thicknesses of cork age rings. Sodium and calcium do not appear to influence this cork production.</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%">Roldão, I F</style></author><author><style face="normal" font="default" size="100%">Alpuim, M H</style></author><author><style face="normal" font="default" size="100%">Bohm, J</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">CONSIDERAçõES SOBRE OS RESULTADOS JA OBTIDOS NA PROPAGACAO VEGETATIVA DO SOBREIRO. ESTACARIA E ENXERTIA</style></title><secondary-title><style face="normal" font="default" size="100%">Scientia gerundensis</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Cork oak</style></keyword><keyword><style  face="normal" font="default" size="100%">Cuttings</style></keyword><keyword><style  face="normal" font="default" size="100%">grafting</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus Suber L</style></keyword><keyword><style  face="normal" font="default" size="100%">vegetative propagation</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1992</style></year></dates><volume><style face="normal" font="default" size="100%">18</style></volume><pages><style face="normal" font="default" size="100%">85-89</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">This work documents the first results of cork oak vegetative propagation by cuttings in a controlled envuonment. The followings traits are analyzed : substrates, hormones, au and substrate temperature andrelative bumidity etc.. Results from bud graftings in the multiplication of plus trees are also referenced</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%">Ferreira, M. C.</style></author><author><style face="normal" font="default" size="100%">Ferreira, G. W. S.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Impacte do Platypus cylindrus F.(Coleoptera, Platypodidae) en Quercus suber L</style></title><secondary-title><style face="normal" font="default" size="100%">Scientia gerundensis</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Cork oak</style></keyword><keyword><style  face="normal" font="default" size="100%">Platypus cylindrus F.</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%">1992</style></year><pub-dates><date><style  face="normal" font="default" size="100%">1992///</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://dugi-doc.udg.edu/handle/10256/5343</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">18</style></volume><pages><style face="normal" font="default" size="100%">219 - 221</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The main symptoms of attacked trees by Platypus cylindrus F. are given. Data on bioecology, dispersion and impact of this species on Quercus suber L. are presented. Protection mesures.</style></abstract></record></records></xml>