<?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%">LEONARDI, S</style></author><author><style face="normal" font="default" size="100%">Rapp, M</style></author><author><style face="normal" font="default" size="100%">DENES, A</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Organic matter distribution and fluxes within a holm oak (Quercus ilex L.) stand in the Etna volcano</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%">Mediterranean forests</style></keyword><keyword><style  face="normal" font="default" size="100%">organic matter cycling</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus ilex L</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1992</style></year></dates><volume><style face="normal" font="default" size="100%">99-100</style></volume><pages><style face="normal" font="default" size="100%">219-224</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Located at 1100 m above sea level, on the western site of the Etna volcano, the ecophysiology of the Mount Minardo holm oak coppice has been investigated for more then twenty years. In this stand, now 31 years old, the above ground biomass amounts to 15000 g m 2 of organic material, including leaves and perennial woody material. During these 31 years, the mean annual production has been around 775 g m 2. The yearly mean litterfall amounts to 310 g m 2, including 200 g m -2 of leaves, mostly two years old. The soil surface is covered by a litter layer amounting to 3150 g m-2. Each year, following Jenny's decomposition rate and field measurements, 290 g m- 2 of the litter turns into CO2, or becomes incorporated in the soil organic matter.</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%">LEONARDI, S</style></author><author><style face="normal" font="default" size="100%">Rapp, M</style></author><author><style face="normal" font="default" size="100%">DENES, A</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">ORGANIC-MATTER DISTRIBUTION AND FLUXES WITHIN A HOLM OAK (QUERCUS-ILEX L) STAND IN THE ETNA VOLCANO - A SYNTHESIS</style></title><secondary-title><style face="normal" font="default" size="100%">VEGETATIO</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Mediterranean forests</style></keyword><keyword><style  face="normal" font="default" size="100%">ORGANIC MATER</style></keyword><keyword><style  face="normal" font="default" size="100%">QUERCUS-ILEX L</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1992</style></year></dates><publisher><style face="normal" font="default" size="100%">KLUWER ACADEMIC PUBL</style></publisher><pub-location><style face="normal" font="default" size="100%">SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS</style></pub-location><volume><style face="normal" font="default" size="100%">100</style></volume><pages><style face="normal" font="default" size="100%">219-224</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Located at 1100 m above sea level, on the western site of the Etna volcano, the ecophysiology of the Mount Minardo holm oak coppice has been investigated for more then twenty years. In this stand, now 31 years old, the above ground biomass amounts to 15000 g m-2 of organic material, including leaves and perennial woody material. During these 31 years, the mean annual production has been around 775 g m-2. The yearly mean litterfall amounts to 310 g m-2, including 200 g m-2 of leaves, mostly two years old. The soil surface is covered by a litter layer amounting to 3150 g m-2. Each year, following Jenny's decomposition rate and field measurements, 290 g m-2 of the litter turns into CO2, or becomes incorporated in the soil organic matter.</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%">LEONARDI, S</style></author><author><style face="normal" font="default" size="100%">Rapp, M</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">BIOMASS PRODUCTION AND NUTRIENT REQUIREMENT DURING RESTORATION OF A HOLM OAK COPPICE</style></title><secondary-title><style face="normal" font="default" size="100%">ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">biomass</style></keyword><keyword><style  face="normal" font="default" size="100%">coppice</style></keyword><keyword><style  face="normal" font="default" size="100%">NUTRIENT REQUIREMENT</style></keyword><keyword><style  face="normal" font="default" size="100%">STAND RESTORATION</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1990</style></year></dates><publisher><style face="normal" font="default" size="100%">GAUTHIER-VILLARS</style></publisher><pub-location><style face="normal" font="default" size="100%">S P E S-JOURNAL DEPT, 120 BD ST GERMAIN, F-75006 PARIS, FRANCE</style></pub-location><volume><style face="normal" font="default" size="100%">11</style></volume><pages><style face="normal" font="default" size="100%">819-834</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The restoration of a holm oak (Quercus ilex L.) coppice was studied during three years following a clear-cut. Leaf area rebuilding, above-ground biomass production and nutrient requirement are especially studied. The new produced above-ground biomass amounts respectively to 151, 913 and 2 161 g m-2, one, two and three years after clear-cut. Leaf area index, at the same ages, amounts respectively to 0,3-1,9 and 4,4 m2/m2. The last value is nearly the same as those of the 30 year old coppice stand (4,4 m2/m2). The biomass increment corresponds to a current yearly above-ground productivity of 165, 748 and 1 248 g m-2 of fresh material during these three years. The mean annual above-ground production, calculated over thirty years, only amounts to 800 g m-2. Concerning nutrients, it seems that the early years are characterized by a higher requirement of nitrogen, phosphorus and potassium in comparison to the mature stand. The needs for calcium start to be important only after the third year, with the reappearance of ``stems{''} and later trunks.</style></abstract></record></records></xml>