<?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%">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>