<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>7</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">GARCÍA, L V</style></author><author><style face="normal" font="default" size="100%">POLO, A</style></author><author><style face="normal" font="default" size="100%">Maltez-Moro, S</style></author><author><style face="normal" font="default" size="100%">Gutiérrez, E</style></author><author><style face="normal" font="default" size="100%">PÉREZ-RAMOS, I M</style></author><author><style face="normal" font="default" size="100%">JORDÁN, A</style></author><author><style face="normal" font="default" size="100%">MARTÍNEZ-ZAVALA, L</style></author><author><style face="normal" font="default" size="100%">MARAÑÓN, T</style></author></authors><secondary-authors><author><style face="normal" font="default" size="100%">Bellinfante, N</style></author><author><style face="normal" font="default" size="100%">JORDÁN, A</style></author></secondary-authors></contributors><titles><title><style face="normal" font="default" size="100%">Relación entre composición y densidad de la cubierta vegetal leñosa y las características superficiales del suelo en Bosques Mixtos de Quercus del Sur de la Península Ibérica</style></title><secondary-title><style face="normal" font="default" size="100%">Tendencias Actuales de la Ciencia del Suelo</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">acumulación de hojarasca</style></keyword><keyword><style  face="normal" font="default" size="100%">densidad cubierta vegetal leñosa</style></keyword><keyword><style  face="normal" font="default" size="100%">dosel leñoso</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus (voyant)</style></keyword><keyword><style  face="normal" font="default" size="100%">suelo</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2004</style></year></dates><pub-location><style face="normal" font="default" size="100%">Sevilla</style></pub-location><pages><style face="normal" font="default" size="100%">522-530</style></pages><isbn><style face="normal" font="default" size="100%">9788469041291</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">We studied the relationships between different estimates of the woody canopy density; different estimates of litter release and accumulation, and different soil properties (mainly soil reaction and macronutrient level) which have been recognised as potentially relevant for plant establishment and development in mixed Quercus forest from Natural Park “do Sudoeste Alentejano e Costa Vicentina”, Portugal (with Q. suber, Q. faginea as dominant tree species) and Natural Park “Los Alcornocales”, Spain (with Q. suber and Q. canariensis). We have found 1) A highly significant, quantitative, relationship between litter accumulation and overall canopy density. These relationships can be established either by using objective (but time-consuming) measures (by sampling or using ad hoc measuring devices) or by calibrated by-eye estimates of three simultaneous observers; 2) A significant relationship between some soil properties (N, P, ammonium) and both canopy density and litter accumulation. We conclude that these relationships are interesting in two ways: 1) They may allow to establish ‘ecotransfer functions’ for these forests (i.e. estimates o predictions about surface litter accumulation or surface values for soil properties, as organic carbon, N or P contents, by using quick field estimates of canopy density or even remote sensing estimates of canopy density), after suitable calibrations. 2) Since some soil chemical properties with known ecological relevance (e.g. C, N, P contents, soil reaction) in forest regeneration may change in a close relationship with other more studied, better known, ecological factors (light, moisture, temperature), attention should be paid to separate direct (e.g. light limitation) versus indirect (soil or litter mediated) effects of woody canopy when evaluating ecological responses at the understorey, while studying forest regeneration processes.</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>5</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Garcia, L. V.</style></author><author><style face="normal" font="default" size="100%">POLO, A.</style></author><author><style face="normal" font="default" size="100%">Maltez-Moro, S.</style></author><author><style face="normal" font="default" size="100%">GUTIÉRREZ, E.</style></author><author><style face="normal" font="default" size="100%">PÉREZ-RAMOS, I. M.</style></author><author><style face="normal" font="default" size="100%">JORDÁN, A.</style></author><author><style face="normal" font="default" size="100%">MARTÍNEZ-ZAVALA, L.</style></author><author><style face="normal" font="default" size="100%">MARAÑON, T.</style></author></authors><secondary-authors><author><style face="normal" font="default" size="100%">Bellinfante, N.</style></author><author><style face="normal" font="default" size="100%">JORDÁN, A.</style></author></secondary-authors></contributors><titles><title><style face="normal" font="default" size="100%">Relación entre composición y densidad de la cubierta vegetal leñosa y las características superficiales del suelo en Bosques Mixtos de Quercus del Sur de la Península Ibérica</style></title><secondary-title><style face="normal" font="default" size="100%">Tendencias Actuales de la Ciencia del Suelo</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">acumulación de hojarasca</style></keyword><keyword><style  face="normal" font="default" size="100%">densidad cubierta vegetal leñosa</style></keyword><keyword><style  face="normal" font="default" size="100%">dosel leñoso</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus (voyant)</style></keyword><keyword><style  face="normal" font="default" size="100%">suelo</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:Relaci?n+entre+la+composici?n+y+densidad+de+la+cubierta+vegetal+le?osa+y+las+caracter?sticas+superficiales+del+suelo+en+bosques+mixtos+de+Quercus+del+sur+de+la+Pen?nsula+Ib?rica#0</style></url></web-urls></urls><pub-location><style face="normal" font="default" size="100%">Sevilla</style></pub-location><pages><style face="normal" font="default" size="100%">522 - 530</style></pages><isbn><style face="normal" font="default" size="100%">9788469041291</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">We studied the relationships between different estimates of the woody canopy density; different estimates of litter release and accumulation, and different soil properties (mainly soil reaction and macronutrient level) which have been recognised as potentially relevant for plant establishment and development in mixed Quercus forest from Natural Park “do Sudoeste Alentejano e Costa Vicentina”, Portugal (with Q. suber, Q. faginea as dominant tree species) and Natural Park “Los Alcornocales”, Spain (with Q. suber and Q. canariensis). We have found 1) A highly significant, quantitative, relationship between litter accumulation and overall canopy density. These relationships can be established either by using objective (but time-consuming) measures (by sampling or using ad hoc measuring devices) or by calibrated by-eye estimates of three simultaneous observers; 2) A significant relationship between some soil properties (N, P, ammonium) and both canopy density and litter accumulation. We conclude that these relationships are interesting in two ways: 1) They may allow to establish ‘ecotransfer functions’ for these forests (i.e. estimates o predictions about surface litter accumulation or surface values for soil properties, as organic carbon, N or P contents, by using quick field estimates of canopy density or even remote sensing estimates of canopy density), after suitable calibrations. 2) Since some soil chemical properties with known ecological relevance (e.g. C, N, P contents, soil reaction) in forest regeneration may change in a close relationship with other more studied, better known, ecological factors (light, moisture, temperature), attention should be paid to separate direct (e.g. light limitation) versus indirect (soil or litter mediated) effects of woody canopy when evaluating ecological responses at the understorey, while studying forest regeneration processes.</style></abstract><notes><style face="normal" font="default" size="100%">The following values have no corresponding Zotero field:&lt;br/&gt;periodical: Tendencias Actuales de la Ciencia del Suelo</style></notes></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%">Voulgaridis, E</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Wood cell morphology characteristics of some oak species and mediterranean shrubs</style></title><secondary-title><style face="normal" font="default" size="100%">European Journal of Wood and Wood Products</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">fiber length</style></keyword><keyword><style  face="normal" font="default" size="100%">Mediterranean shrubs</style></keyword><keyword><style  face="normal" font="default" size="100%">Pith to bark variation</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus (voyant)</style></keyword><keyword><style  face="normal" font="default" size="100%">vessel length</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1990</style></year></dates><volume><style face="normal" font="default" size="100%">48</style></volume><pages><style face="normal" font="default" size="100%">261-267</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Some characteristics of wood cell morphology of three oak species (Quercus conferta, Q. flex, Q, coccifera) and five Mediterranean shrubs (Arbutus andrachne, A. unedo, Erica arborea. Phillyrea me- dia, Pistacia lerebinthus) were investigated at height 30 cm above ground. The mean fiber length of oak species ranged between 1.10 and 1.35 mm and that of Mediterranean shrubs between 0.56 and 0.82 ram. The mean wtlues of vessel dimensions ranged as follows: 0.22q).31 mm (vessel length) and 0.080-0.087 mm (vessel diameter) for oaks and 0.19-0.40 mm (vessel length) and 0.033-0.043 mm (ves- sel diameter) for Mediterranean shrubs. The pith to bark variation of fiber length appeared to follow the general patterns of length var- iation but differences were observed between the species tested with regard to the rate of fiber length increase and to the number of years necessary to reach a typical length. The horizontal variation of vessel length and diameter was not consistent between the species: from pith to bark, vessel length and diameter increased in a few species and decreased or remained more or less unchanged in the others. For each species, a similar horizontal variation pattern of fiber length and, to a lesser extent, of vessel length was observed between the trees. The greatest pith to bark variation of three-ring mean values relative to the first three growth rings occurred in Quercus conferta for fiber and vessel length and in Quercus coccifera and Q. ilex for vessel diameter.</style></abstract></record></records></xml>