<?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%">Gómez-Casero, M T</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Flowering phenology of Mediterranean Quercus species in different locations (Córdoba, SW Iberian Peninsula)</style></title><secondary-title><style face="normal" font="default" size="100%">Acta botánica malacitana</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">flowering</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus</style></keyword><keyword><style  face="normal" font="default" size="100%">range</style></keyword><keyword><style  face="normal" font="default" size="100%">reproductive phenology</style></keyword><keyword><style  face="normal" font="default" size="100%">tendency</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2007</style></year></dates><volume><style face="normal" font="default" size="100%">32</style></volume><pages><style face="normal" font="default" size="100%">127-146</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Periodical qualitative and quantitative checking of flowering phases was carried out over six growing seasons (1997-2002) for the three Mediterranean Quercusspecies found in Sierra Morena (Córdoba, SW Spain): Q. ilex L. ssp. ballota (Desf.) Samp., Q. coccifera L. and Q. suber L. A total of 60 individuals were selected. Additionally, 30 Quercus ilex ssp. ballota individuals were selected and studied in Sierras Subbéticas (Priego de Córdoba, SW Spain) in 1999 and 2000. Morphological changes occurring at different points in each phenological phase were charted. Among species differences were found for inflorescences/male and female flowers, in terms of the phenological flowering sequence. Male inflorescences displayed a more homogeneous development. All individuals and populations were proterandrous. Phenological trends and ranges were charted. Although trends varied with species and year, the overall phenological trend seemed to fit a sigmoid curve in all cases, increasing with phenological development. Shorter ranges were obtained in years with warmer springs, and longer ranges in colder years. Moreover, phenological range differed as a function of species and location. In general, Q. ilex ssp. ballota flowered earlier than the rest, Q. suber displaying the latest flowering period. Individuals located at lower altitudes and facing the sun flowered earlier, followed in most years by those located at higher altitudes. Thus, Q. ilex ssp. ballota flowered earlier in Sierra Morena than in the higher-altitude Sierras Subbéticas.</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%">Qarro, M</style></author><author><style face="normal" font="default" size="100%">de Montard, F X</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Étude de la productivité des parcours de la zone d'Ain-Leuh (Moyen Atlas, plateau Central). II. Modélisation de la production d'herbe : interactions climats × sol × recouvrement arboré</style></title><secondary-title><style face="normal" font="default" size="100%">Agronomie</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">climatic factor</style></keyword><keyword><style  face="normal" font="default" size="100%">dry matter</style></keyword><keyword><style  face="normal" font="default" size="100%">nitrogen output</style></keyword><keyword><style  face="normal" font="default" size="100%">production</style></keyword><keyword><style  face="normal" font="default" size="100%">range</style></keyword><keyword><style  face="normal" font="default" size="100%">silvopastoral agriculture</style></keyword><keyword><style  face="normal" font="default" size="100%">tree cover rate</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1992</style></year></dates><volume><style face="normal" font="default" size="100%">12</style></volume><pages><style face="normal" font="default" size="100%">489-501</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">A study of dry matter production in rough pastures of Ain-Leuh (Middle Atlas, central plateau). II. Model of herbage production: climate-soil-tree cover interactions. Herbaceous production was measured in 1983 and 1984 in the Middle Atlas and central plateau rangelands and grazed forests, in the Aïn-Leuh region, at 4 characteristic sites in 4 bioclimatic zones: semi-arid (Quercus ilex and Juniperus oxycedrus forest), sub-humid (pure Quercus ilex forest), and humid (Cedrus atlanticus and Quercus ilex forest, unsylvatic low grass at the highest site); measurements were made in areas protected from sheep and goat grazing, through 5 successive cuts from late February to mid-July, on plots varying in tree cover from 0 to 90%. Late February yield was mainly explained through the degree of precipitation occurring in both September plus October, interacting with the levels of soil nitrogen in poor soils of the Quercus and Juniperus zone, or level of rough sand in clay soils of the 3 upper zones. Yields from 4 successive cuts from the end of March to mid-July were mainly explained through interactions between radiative energy and a function of tree cover rate (100-R) eR/B; the B value was 50 in the semi-arid zone, and 90 for non-legume and 50 for legume plants in the sub-humid/humid zone). A climate humidity factor, the ETR/ETP ration in sub-humid and humid zone or the frequency of rainy days in the semi-arid zone, had an additive and an interactive effect respectively.</style></abstract></record></records></xml>