<?xml version="1.0" encoding="UTF-8"?><xml><records><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%">MARTIN PEREZ, D</style></author><author><style face="normal" font="default" size="100%">ALEJANO MONGE, R</style></author><author><style face="normal" font="default" size="100%">VAZQUEZ PIQUE, J</style></author><author><style face="normal" font="default" size="100%">TAPIAS, R</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Evolución del crecimiento radial de Quercus ilex L. ssp. ballota (Desf.) Samp) y Quercus suber L.) en la provincia de Huelva. Influencia de parámetros climáticos, selvícolas y humedad de suelo.</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%">cambio climático y gestión forestal</style></keyword><keyword><style  face="normal" font="default" size="100%">Sistemas agrosilvopastorales</style></keyword><keyword><style  face="normal" font="default" size="100%">sostenibilidad.</style></keyword><keyword><style  face="normal" font="default" size="100%">tratamientos selvícolas</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%">1-14</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">El objetivo de este estudio es describir la evolución del crecimiento diametral del fuste de Quercus ilex L. ssp ballota (Desf.) Samp y Quercus suber L. a escala inter e intranual, y estudiar la influencia de diferentes tratamientos selvícolas (podas y tratamientos de suelo) y de factores climáticos y edáficos, con el fin de disponer en posteriores estudios de modelos de crecimiento para estas dos especies y prever su comportamiento ante la variación de estos factores, así como para profundizar en la función de estos Quercus mediterráneos como sumideros de carbono atmosférico y predecir los cambios en su distribución futura en función de los posibles escenarios de cambio climático existentes. Para este estudio se han establecido tres parcelas experimentales en diferentes localizaciones de la provincia de Huelva (Hinojos, San Bartolomé de la Torre y Huerto Ramírez), donde se han aplicado tratamientos de poda y suelo y medido los parámetros edafoclimáticos. El crecimiento diametral de fuste se ha estimado usando dendrómetros de banda, realizando mediciones mensuales entre los años 2003 y 2008. Con el volumen de datos recogidos en la fase de campo se ha elaborado una base de datos que se ha utilizado para describir la evolución mensual del crecimiento de Quercus ilex y Quercus suber a lo largo de 6 años, analizando la influencia de parámetros climáticos, humedad del suelo y parámetros selvícolas (tratamientos de poda y suelo) sobre el mismo. Este trabajo es la base para la elaboración de un modelo de crecimiento de esta especie.</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%">Carevic, F S</style></author><author><style face="normal" font="default" size="100%">Fernández, M</style></author><author><style face="normal" font="default" size="100%">Alejano, R</style></author><author><style face="normal" font="default" size="100%">Vázquez-Piqué, J</style></author><author><style face="normal" font="default" size="100%">TAPIAS, R</style></author><author><style face="normal" font="default" size="100%">Corral, E</style></author><author><style face="normal" font="default" size="100%">Domingo, J</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Plant water relations and edaphoclimatic conditions affecting acorn production in a holm oak (Quercus ilex L. ssp. ballota) open woodland</style></title><secondary-title><style face="normal" font="default" size="100%">Agroforestry Systems</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">acorn production</style></keyword><keyword><style  face="normal" font="default" size="100%">cuticular transpiration</style></keyword><keyword><style  face="normal" font="default" size="100%">land use</style></keyword><keyword><style  face="normal" font="default" size="100%">pressure-volume curves</style></keyword><keyword><style  face="normal" font="default" size="100%">soil treatments</style></keyword><keyword><style  face="normal" font="default" size="100%">water potential</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2009</style></year></dates><volume><style face="normal" font="default" size="100%">78</style></volume><pages><style face="normal" font="default" size="100%">299-308</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Acorn production patterns and the annual evolution of water relations parameters of Quercus ilex ssp. ballota (Desf.) Samp. in a dehesa (an open woodland forest) subject to various soil treatments (ploughing, ploughing? sowing, control) were studied in southwest Spain from June 2006 to December 2008. The effects of soil water holding capacity and effective soil depth on soil and plant water status and acorn production were also investigated. Water parameters showed signiÞcant differences between the ploughing treatment and the control, and there were also signiÞcant temporal differences. Xylem water potential ranged from- 3.4 ± 0.1 to - 0.7 ± 0.2 MPa, and cuticular transpiration was 62.4Ð 192.9 mmol H2O kg - 1 s - 1 . Acorn production did not differ signiÞcantly according to soil treatment, and showed large intra-speciÞc variability. Individual values ranged from 0 to 1,220 g m - 2 (fresh weight). Positive relationships were found between xylem water potential, cuticular transpiration and relative water content measured at midsummer, and acorn production during the three studied years. These results suggest that climatic conditions and soil water availability have a strong inßuence on plant water status, and therefore on acorn development during summer. The results also reßect the ability of this species to adapt to the Mediterranean climate by preserving water during dry periods, which to a large extent can be attributed to stomatal closure at high relative water content levels, an</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%">Alejano, R</style></author><author><style face="normal" font="default" size="100%">TAPIAS, R</style></author><author><style face="normal" font="default" size="100%">Fernández, M</style></author><author><style face="normal" font="default" size="100%">Torres, Enrique</style></author><author><style face="normal" font="default" size="100%">Alaejos, Joaquín</style></author><author><style face="normal" font="default" size="100%">Domingo, Juan</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Influence of pruning and the climatic conditions on acorn production in holm oak (Quercus ilex L.) dehesas in SW Spain</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%">acorn production</style></keyword><keyword><style  face="normal" font="default" size="100%">Holm oak</style></keyword><keyword><style  face="normal" font="default" size="100%">Masting</style></keyword><keyword><style  face="normal" font="default" size="100%">pruning</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2008</style></year></dates><volume><style face="normal" font="default" size="100%">65</style></volume><pages><style face="normal" font="default" size="100%">209</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Acorn production by Quercus ilex L. ssp. ballota (Desf.) Samp. in SW Spain was assessed, and variations between years and the inﬂuence of pruning on it were examined. To this end, an experimental study was conducted at two diﬀerent sites (Calañas and San Bartolomé, in the province of Huelva) where trees were subjected to traditional (light, moderate or heavy) pruning and also to a new (crown-regeneration) pruning method. Acorn yield was quantiﬁed over a period of 5 years in the Calañas plot and 4 in the San Bartolomé plot, and found to average at 95.61 ± 0.76 g DM/m2 , which is equivalent to 6.5 ± 0.05 kg DM/tree; however, yield ﬁgures varied markedly between years depending on the particular climatic conditions. The average acorn production was correlated with the water potential in mid summer (end of July); the annual, spring and autumn rainfall; and the actual evapotranspiration for the period from September (previous year) to August. No signiﬁcant diﬀerences in acorn production between traditional pruning intensities were detected; in fact, there were only hints that heavy pruning might result in decreased acorn yields. The new pruning method used, crown-regeneration, seems promising with a view to increasing acorn yield; however, it should be tested on larger sample sizes before any ﬁnal conclusions can be drawn in this respect. Based on the results, the present health status of holm oaks in southwestern Spain (a result of sustained decline) and the low value of ﬁrewood – which used to be a very important source of income from pruning a few decades ago –, the authors recommend reducing the frequency and intensity of pruning in the dehesas of the study area.</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%">Alaejos, J</style></author><author><style face="normal" font="default" size="100%">Lopez, F</style></author><author><style face="normal" font="default" size="100%">Eugenio, M E</style></author><author><style face="normal" font="default" size="100%">TAPIAS, R</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Soda-anthraquinone, kraft and organosolv pulping of holm oak trimmings.</style></title><secondary-title><style face="normal" font="default" size="100%">Bioresource technology</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Ethyleneglycol</style></keyword><keyword><style  face="normal" font="default" size="100%">Forestry residues</style></keyword><keyword><style  face="normal" font="default" size="100%">Holm oak trimmings</style></keyword><keyword><style  face="normal" font="default" size="100%">Paper</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2006</style></year></dates><volume><style face="normal" font="default" size="100%">97</style></volume><pages><style face="normal" font="default" size="100%">2110-2116</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The operating conditions for an organosolv (ethyleneglycol) and two alkaline (soda-anthraquinone and kraft) processes for obtaining cellulose pulp and paper from holm oak (Quercus ilex) wood trimmings were optimized. A range of variation for each process variable (viz. temperature, cooking time and soda or ethyleneglycol concentration) was established and a central composite experimental design involving three independent variables at three different variation levels was applied. The results obtained with the three cooking processes used were compared and those provided by the kraft process were found to be the best. Thus, the tensile index values it provided (5.9-16.3 N m/g) were 23.7% and 41.5% better than those obtained with the soda-AQ and ethyleneglycol processes, respectively. Also, the kraft process provided the best burst index, brightness and kappa number values. Based on the optimum working ranges, the temperature and cooking time were the variables resulting in the most and least marked changes, respectively, in pulp properties.</style></abstract><accession-num><style face="normal" font="default" size="100%">16269242</style></accession-num></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, M</style></author><author><style face="normal" font="default" size="100%">Carvajal, F</style></author><author><style face="normal" font="default" size="100%">Alejano, R</style></author><author><style face="normal" font="default" size="100%">Domínguez, L</style></author><author><style face="normal" font="default" size="100%">TAPIAS, R</style></author><author><style face="normal" font="default" size="100%">Alesso, S P</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">EVOLUCIÓN TEMPORAL DEL GRADO DE ENDURECIMIENTO DE PLANTAS DE VIVERO DE 4 ESPECIES FORESTALES ESPAÑOLAS CULTIVADAS EN LOCALIDADES CON CONDICIONES CLIMÁTICAS DISTINTAS</style></title><secondary-title><style face="normal" font="default" size="100%">IV Congreso Forestal Español</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Capacidad de regeneración de raíces</style></keyword><keyword><style  face="normal" font="default" size="100%">Olea europaea</style></keyword><keyword><style  face="normal" font="default" size="100%">Pistacia lentiscus</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus ilex</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus suber</style></keyword><keyword><style  face="normal" font="default" size="100%">Resistencia al frío</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2005</style></year></dates><pub-location><style face="normal" font="default" size="100%">Zaragoza</style></pub-location><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Desde principio del otoño hasta principio de primavera se estudió la evolución de algunos caracteres morfo-fisiológicos indicadores de la calidad de las plantas de vivero destinadas a repoblación forestal (altura, diámetro, distribución de biomasa, nutrición mineral, capacidad de regeneración de raíces y resistencia al frío). Las especies ensayadas fueron Quercus suber, Q. ilex (de dos regiones de procedencia, 11e y 15a), Pistacia lentiscus y Olea europaea var. sylvestris. Todas ellas eran de una savia, procedentes de semillas germinadas en la primavera anterior, crecidas en el mismo tipo de envase (300 cm3) y con el mismo substrato pero cultivadas en dos viveros de localización y características climáticas diferentes. En cuanto al patrón de evolución temporal de los parámetros medidos, se advirtió una alta correlación con la temperatura ambiente, siendo el vivero de clima con estaciones más marcadas el que alcanzó con anterioridad su grado máximo de resistencia al frío y el que retrasó la salida de la dormición durante la época invierno-primavera. Indudablemente, las distintas especies se diferenciaron en su patrón de evolución y en el grado de resistencia al frío conseguido, debiendo resaltar las diferencias encontradas entre las dos procedencias de encina, siendo la de clima con estaciones más extremas (15a) la que en todo momento presentó un mayor grado de resistencia al frío. También se encontró un alto grado de correspondencia entre el contenido en K y la resistencia al frío o el contenido en N y P con la capacidad de regeneración de raíces. Las cuatro especies necesitaron acumular, al menos, 350 h (&lt; 8 ºC) para conseguir un grado apreciable de resistencia al frío, alcanzándose el máximo resistencia entre 700 y 800 h</style></abstract></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%">CORDÓN, S</style></author><author><style face="normal" font="default" size="100%">BRAVO, V</style></author><author><style face="normal" font="default" size="100%">TAPIAS, R</style></author><author><style face="normal" font="default" size="100%">López, G</style></author><author><style face="normal" font="default" size="100%">Sánchez, I</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Efecto de las inyecciones de fosfonato potásico en tronco de encina (QUERCUS ILEX SUBSP. BALLOTA) SOBRE EL CRECIMIENTO DE RAMILLAS Y LA FRUCTIFICACIÓN.</style></title><secondary-title><style face="normal" font="default" size="100%">III Congreso Forestal Español</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Andévalo</style></keyword><keyword><style  face="normal" font="default" size="100%">Huelva</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus ilex</style></keyword><keyword><style  face="normal" font="default" size="100%">trunk injections</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2001</style></year></dates><pub-location><style face="normal" font="default" size="100%">Granada</style></pub-location><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The present communication intends to see the answer of the oaks (Quercus ilex subsp. ballota) treateds using antifungal materials (potassium phosphonate) injections to the trunk. In the first year, has been measured the growth of the buds and the production of acorns of three treated oaks and other three not treated, in one property of the Western Andévalo (Andalusia, Huelva).</style></abstract></record></records></xml>