<?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%">SERRADA, R.</style></author><author><style face="normal" font="default" size="100%">BRAVO, J. A.</style></author><author><style face="normal" font="default" size="100%">ROIG, S.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Brotación de encinas (Quercus ilex subsp. ballota) con edades elevadas. Experiencias en el monte de Riofrío (Segovia)</style></title><secondary-title><style face="normal" font="default" size="100%">Invest. Agrar.: Sist. Recur. For. Fuera de Serie</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">coppice</style></keyword><keyword><style  face="normal" font="default" size="100%">old holm-oak</style></keyword><keyword><style  face="normal" font="default" size="100%">Regeneration</style></keyword><keyword><style  face="normal" font="default" size="100%">shoot of root</style></keyword><keyword><style  face="normal" font="default" size="100%">shoot of stump</style></keyword><keyword><style  face="normal" font="default" size="100%">sprouting capability</style></keyword><keyword><style  face="normal" font="default" size="100%">viability</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2004</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2004///</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://scholar.google.com/scholar?hl=en&amp;btnG=Search&amp;q=intitle:Brotaci?n+en+encinas+(+Quercus+ilex+subsp+.+ballota+)+con+edades+elevadas+.+Experiencias+en+el+monte+de+Riofr?o+(+Segovia+)#0</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">13</style></volume><pages><style face="normal" font="default" size="100%">127 - 141</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Results from an experiment with the objective of studying the sprouting capability —shoots of stump or root— on aged holm-oak trees are shown in this paper. Site of study is located in Riofrío forest, at 960 m a.s.l. at north facing slope of Guadarrama range (Central mountain range), on deep siliceous soils. After an ecological and dasonomic inventory 24 aged trees were fellen; dbh of fellen trees vary from 22.3 to 73.2 cm and age was estimated to be between 70 and 251 years. Contingence tables and logistic regression were used to test the dependence relationship among trees characteristics and the intensity of subsequent sprouting. One period growth after felling, 13 trees (62%) among the live ones (21) that had been felled present some shoots; after three growth periods, the same portion raised to 81% (17). We found only shoots of stump in 65% of the trees that had sprouted; 12% of trees that have only shoots of root and 23% of the trees with both types of shoots. Neither shoot production nor shoot type —stump or root— seems to be influenced by age.</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%">la Marca, Orazio</style></author><author><style face="normal" font="default" size="100%">Marziliano A., Pasquale</style></author><author><style face="normal" font="default" size="100%">Moretti, Nicola</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Experimental research in ageing holm oak (Quercus ilex L.) coppices: preliminary results</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%">coppice</style></keyword><keyword><style  face="normal" font="default" size="100%">cutting method</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus ilex L.</style></keyword><keyword><style  face="normal" font="default" size="100%">Regeneration</style></keyword><keyword><style  face="normal" font="default" size="100%">snow breakage</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://dx.doi.org/10.1051/forest:19980406</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">55</style></volume><pages><style face="normal" font="default" size="100%">461 - 476</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The initial data of a long-term research programme aimed at determining the silvicultural choices for management of ageing holm oak coppices are reported. The various treatments being tested are the following: treatments A and B, respectively, with 50 and 250 reserve trees per hectare, all of the same age; treatment C with 140 reserve trees per hectare, with three different ages; treatment D, conversion into high forest; and treatment E, natural evolution (the control). A total of 15 permanent plots were established (five treatments x three replicates) and the experimental design used is that of randomized blocks. The results presented regard the structural development of the coppice during the first 2 years after coppicing. Regeneration from seed showed a significant correlation with treatment. Data relative to the characteristics of the stands existing before the various interventions also are given. Such preliminary results need further periodical observations</style></abstract><issue><style face="normal" font="default" size="100%">4</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%">Ducrey, M.</style></author><author><style face="normal" font="default" size="100%">Toth, J.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Effect of cleaning and thinning on height growth and girth increment in holm oak coppices (Quercus ilex L.)</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%">cleaning</style></keyword><keyword><style  face="normal" font="default" size="100%">coppice</style></keyword><keyword><style  face="normal" font="default" size="100%">Growth</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus ilex</style></keyword><keyword><style  face="normal" font="default" size="100%">thinning</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://www.springerlink.com/index/HXU30RK85H074K63.pdf</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">99-100</style></volume><pages><style face="normal" font="default" size="100%">365 - 376</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">This article studies the influence of cleaning or thinning intensity and of coppice age at the time of silvicultural treatment, on the growth of shoots remaining on the stool, in Quercus ilex coppices. Two experimental designs were used to answer these questions. The first studied the effect of two cleaning intensities on 4, 8, 15, 20, and 25 year old coppices. The second studied the effect of 4 thin- O O/ ning intensities (26 o, 42.0, 58%, or 78 °,/o removal of the initial basal area) on 43 and 57 year old coppices. In both cases, control plots undergoing no silvicultural treatment were maintained for each age class. The results, 4 and 5 years after silvicultural treatment, concerned girth increment and height growth of coppice shoots. Cleaning or thinning consistently had a positive influence on girth increment. In young coppices, less than 25 years old, mean annual girth increment was approximately 6 mm in the controls and double that under heavy cleaning. In older coppices, girth increment was lower in controls (3 mm per year) but the effect of thinning was very positive and, under very heavy thinning, growth was more than 11 mm per year. Cleaning and thinning often modify height growth. This effect was found to be either positive or negative and no general trend could be defined which was valid for all the age classes. Silvicultural treatments also had a positive effect on the appearance and growth of epicormic shoots on the holm oak trunks. The results were also analysed at the stool level. The number or percentage of shoots removed had a positive effect on the individual growth of selected shoots</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%">Ducrey, M.</style></author><author><style face="normal" font="default" size="100%">Boisserie, M.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Recrû naturel dans des taillis de chêne vert (Quercus ilex L) à la suite d'exploitations partielles</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%">coppice</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus ilex = holm oak</style></keyword><keyword><style  face="normal" font="default" size="100%">stool</style></keyword><keyword><style  face="normal" font="default" size="100%">stump sprout</style></keyword><keyword><style  face="normal" font="default" size="100%">thinning</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://dx.doi.org/10.1051/forest:19920202</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">49</style></volume><pages><style face="normal" font="default" size="100%">91 - 109</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Natural regrowth of holm oak coppice (Quercus ilex L) following partial cuts. The aim of this article was to study the influence of coppice age (4 to 57 years old) and of intensities of cleaning (light and heavy) or thinning (26-78% of removed basal area) on the appearance and growth of new stump sprouts in Quercus ilex coppice. The sprout layer at soil level can be quantified by degree of closure, biomass and Quercus ilex sprout height. This layer grew regularly for the 5 years following harvest and increased in direct proportion to increase in thinning intensities; it was found to be greater for young coppice (25 years old and less) than for old coppice. Coppice functioning was then studied at the stool level. Number and growth of new sprouts inside each stool were then related to the initial characteristics of the initial stool as well as to the degree of thinning in the stool. Sprout number was proportional to number of cut shoots, while sprout growth tended to be related to percentage of shoot or basal area removed by thinning. Finally an attempt has been made to explain the functioning of the stools by separating the effects of the mean thinning intensity of each plot and of the degree of cutting for each stool. In conclusion, hypotheses have been proposed on physiological origin of the observed phenomena.</style></abstract><issue><style face="normal" font="default" size="100%">2</style></issue></record></records></xml>