<?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%">Turrel, M</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Influence of cutting methods and dates on stump sprouting in Holm oak (Quercus ilex L) coppice</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 date</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%">stump sprout</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1992</style></year></dates><volume><style face="normal" font="default" size="100%">49</style></volume><pages><style face="normal" font="default" size="100%">449-464</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The goals of this study were to compare height growth of stump sprouts in Quercus ilex stools cut by different methods at various times during the year. Four cutting methods were compared: chain saw at ground level and at 15 cm above ground, axe, and 'saut du piquet' ('stump breaking'). Cuttings were carried out every 2 months for a period of 1 year. Several important results can be described 4 years after cutting. Cuttings performed during the dormant season resulted in minimum stool mortality, and maximum new sprout number, height and diameter growth. An exception was cutting made during a winter frost period. Summer cuttings led to the poorest growth which, however, tended to be regained in subsequent years. Axe and chain saw cuttings yielded better results than 'saut du piquet' cutting. This last method resulted in high stool mortality and both fewer and smaller sprouts. Sprouts appeared to be more numerous and grew better when the stools initially had large and numerous 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%">Dreyer, E</style></author><author><style face="normal" font="default" size="100%">Bousquet, F</style></author><author><style face="normal" font="default" size="100%">Ducrey, M</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Use of pressure volume curves in water relation analysis on woody shoots: influence of rehydration and comparison of four European oak species</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%">pressure-volume curve</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus sp</style></keyword><keyword><style  face="normal" font="default" size="100%">turgor</style></keyword><keyword><style  face="normal" font="default" size="100%">water potential</style></keyword><keyword><style  face="normal" font="default" size="100%">water relations</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1990</style></year></dates><volume><style face="normal" font="default" size="100%">47</style></volume><pages><style face="normal" font="default" size="100%">285-297</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Pressure volume analyses were undertaken on leafy shoots of 4 European oak species (Quercus robur, Q petraea, Q pubescens and Q ilex) in order to determine the relationship between leaf water potential, average osmotic potential and volume averaged turgor. Some technical limitations of pressure volume analysis, as shown by the influence of the resaturation method on computed turgor, were overcome by accounting for losses of intercellular water during the first stages of dehydration. Variations in leaf to stem ratio, which are very important between large leaved oaks and small leaved evergreens, surprisingly did not influence the relative symplasmic volume of our samples. Differences in mean osmotic potential at full turgor (&amp;Pi0) were related to species, with higher values in drought adapted species, and to leaf age and growing conditions. Values of volumetric modulus of elasticity (ε o) did not significantly influence the relations between leaf water potential (Ψw) and turgor (P) in different species. This relationship was mostly related to &amp;Pi0. Finally, tolerance to drought appeared to be related more to the ability to osmotically adjust in response to changes in environment rather than to the absolute values of &amp;Pi0.</style></abstract></record></records></xml>