<?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%">Rico, L</style></author><author><style face="normal" font="default" size="100%">Ogaya, R</style></author><author><style face="normal" font="default" size="100%">Terradas, J</style></author><author><style face="normal" font="default" size="100%">Penuelas, J</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Community structures of N-2-fixing bacteria associated with the phyllosphere of a Holm oak forest and their response to drought</style></title><secondary-title><style face="normal" font="default" size="100%">PLANT BIOLOGY</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Bacterial TRF richness</style></keyword><keyword><style  face="normal" font="default" size="100%">diazotrophic community</style></keyword><keyword><style  face="normal" font="default" size="100%">Drought</style></keyword><keyword><style  face="normal" font="default" size="100%">foliar phyllosphere</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus ilex</style></keyword><keyword><style  face="normal" font="default" size="100%">t-RFLP</style></keyword><keyword><style  face="normal" font="default" size="100%">Trees</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2014</style></year></dates><publisher><style face="normal" font="default" size="100%">WILEY-BLACKWELL</style></publisher><pub-location><style face="normal" font="default" size="100%">111 RIVER ST, HOBOKEN 07030-5774, NJ USA</style></pub-location><volume><style face="normal" font="default" size="100%">16</style></volume><pages><style face="normal" font="default" size="100%">586-593</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Biological nitrogen (N) fixation is a key pathway in terrestrial ecosystems and is therefore critical for understanding the responses of ecosystems to global environmental changes. The free-living diazotrophic community is distributed along the canopy-to-soil profile, but the ecological significance of epiphyllic N-2 fixers, despite their functional relevance, on plant foliar surfaces remains very poorly understood compared with the N-2-fixing community in forest litter and soils. We assessed the community structure of N-2 fixers and overall bacteria by genetic fingerprinting (t-RFLP) to explore the seasonal successional patterns of the microbial community in the natural phyllosphere of a Holm oak (Quercus ilex) forest submitted to 12-year field experiment of rain exclusion mimicking the conditions of drought projected for the coming decades. Leaves of Holm oak were analysed in different seasons over a period of 1.5years. The bacterial community of the phyllosphere did not correspond to the surrounding soil biome in the same area. These analyses provided field evidence for the presence of free-living diazotrophs associated with the tissues of leaves of Holm oak, the dominant tree species of many Mediterranean forests. The results also revealed that the community composition is affected seasonally and inter-annually by the environment, and that the composition shifts in response to climate change. Drought treatment increased the richness of the epiphyllic microbial community, especially during the summer. These changes were associated with higher C:N ratios of leaves observed in response to drought in semiarid areas. This epiphyllic microbiota that can potentially fix N-2 extends the capacity of plants to adapt to the environment.</style></abstract></record><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%">Terradas, J</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Holm oak and holm oak forests: An introduction</style></title><secondary-title><style face="normal" font="default" size="100%">Ecology of Mediterranean Evergreen Oak Forests</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Geral</style></keyword><keyword><style  face="normal" font="default" size="100%">Holm oak</style></keyword><keyword><style  face="normal" font="default" size="100%">Mediterranean</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus ilex</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1999</style></year></dates><publisher><style face="normal" font="default" size="100%">Springer Berlin Heidelberg</style></publisher><volume><style face="normal" font="default" size="100%">137</style></volume><pages><style face="normal" font="default" size="100%">3-14</style></pages><isbn><style face="normal" font="default" size="100%">0070-8356; 3-540-65019-9</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Why should we study the Mediterranean evergreen forests of holm oak (Quercus ilex L.)? Besides the pursuit of knowledge, two major reasons can be put forward. First, holm oak forests are a dominant type of vegetation in a transition zone between temperate forests, mostly dominated by deciduous trees and the scrublands (maquis, chaparral, phrygana, etc.) that herald the tropical regions. In this transition zone, plants have had to cope with a selective pressure resulting from a double stress - winter cold and summer drought - that has determined their morphological and ecophysiological evolutive responses. One of our aims is to provide an insight into the features of holm oak as related to environmental factors and in comparison with other tree types (broadleaved deciduous hardwoods, needle-leafed conifers)</style></abstract><notes><style face="normal" font="default" size="100%">APS</style></notes><research-notes><style face="normal" font="default" size="100%">APS</style></research-notes><label><style face="normal" font="default" size="100%">Geral</style></label></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%">Caritat, A</style></author><author><style face="normal" font="default" size="100%">Terradas, J</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Micronutrients in biomass fractions of holm oak, beech and fir forests of the Montseny massif (Catalonia, NE Spain)</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%">Abies alba</style></keyword><keyword><style  face="normal" font="default" size="100%">biomass fraction</style></keyword><keyword><style  face="normal" font="default" size="100%">Fagus sylvatica</style></keyword><keyword><style  face="normal" font="default" size="100%">micronutrient</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus ilex</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%">345-352</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">This study is part of a larger research programme on different forest ecosystems in the Montseny massif (Barcelona, NE Spain). The contents of 4 micronutrients (Mn, Fe, Zn and Cu) are given for some biomass fractions in individual monospecific stands of holm oak (Quercus ilex L), beech (Fagus sylvatica L) and fir (Abies alba). The behaviour of different micronutrients is related to relative mobility. Mn, Fe and Zn concentrations increase with leaf age. Nutrient levels of the Montseny stands are compared with those found in other forests of the same species. We have observed relatively high Mn concentrations in different biomass fractions of the holm oak forest studied. This can be related to the low soil pH values. Our 3 forests show different micronutrient allocational patterns. Total quantities of the micronutrients in the biomass are only calculated for Q ilex forest. Values found are 33.6 kg Mn/ha, 15.0 kg Fe/ha, 2.8 kg Zn/ha and 0.17 kg Cu/ha.</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%">PICOLO, R</style></author><author><style face="normal" font="default" size="100%">Terradas, J</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">ASPECTS OF CROWN RECONSTRUCTION AND LEAF MORPHOLOGY IN QUERCUS-ILEX L AND QUERCUS-SUBER L AFTER DEFOLIATION BY LYMANTRIA-DISPAR L</style></title><secondary-title><style face="normal" font="default" size="100%">ACTA OECOLOGICA-OECOLOGIA PLANTARUM</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">defoliation</style></keyword><keyword><style  face="normal" font="default" size="100%">herbivory</style></keyword><keyword><style  face="normal" font="default" size="100%">leaf damage</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus ilex</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus suber</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1989</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%">10</style></volume><pages><style face="normal" font="default" size="100%">69-78</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The effect of a complete defoliation of the evergreen Quercus ilex L. ssp ilex and Quercus suber L. by Lymantria dispar on some variables of sprout development and leaf morphology was studied. Samples were collected at different locations within the crown and along the branches. The effects of species defoliation and location factors on the variables have been tested using multivariate and univariate analysis of variance have been applied. All factors show significant effects on the variables considered jointly, and the responses to defoliation differ between species and between lower and upper crown parts. Differences are discussed and this gives useful information to the understanding of crown reconstruction patterns in both species.</style></abstract><notes><style face="normal" font="default" size="100%">APS</style></notes><research-notes><style face="normal" font="default" size="100%">APS</style></research-notes></record></records></xml>