caa a22 4500 463218302 CHVBK 20180405153204.0 cr unu---uuuuu 170326e20070101xx s 000 0 eng 10.1007/s11056-006-9014-7 doi (NATIONALLICENCE)springer-10.1007/s11056-006-9014-7 Summer field performance of Quercus petraea (Matt.) Liebl and Quercus pyrenaica Willd seedlings, planted in three sites with contrasting canopy cover [Elektronische Daten] [J. Rodríguez-Calcerrada, J. A. Pardos, L. Gil, I. Aranda] In 2000, one-year-old seedlings of pyrenean oak (Quercus pyrenaica Willd.) and sessile oak (Quercus petraea [Matt.] Liebl) were planted in a thinned and an unthinned plot in a pinewood (Pinus sylvestris), and in a nearby clearing. In summer 2002 and 2003, water relations and gas exchange parameters were measured to address the impact of drought on the seedlings. Chlorophyll a fluorescence was also measured to explore leaf photochemistry and a possible non-stomatal limitation to photosynthesis (A). Reduction in stomatal conductance (g) in response to the decrease of predawn water potential (Ψpd) resulted the main cause affecting net carbon uptake. Water potential at midday (Ψmd) was similar in both species but Quercus petraea was more sensitive to soil water deployment occurred along summer, showing slightly lower Ψpd because worse recover of water potential during night. Rate of photosynthesis was higher in Q.␣pyrenaica probably in relation to its greater leaf mass per area (LMA) and nitrogen content per leaf area (Na). Mortality was highest in the clearing and lowest in the thinned pinewood. Throughout the summer, soil moisture was higher in the thinned area, possibly because of the reduction in tree transpiring surface and interception of rainfall. Accordingly, Ψpd of both species was higher in the thinned site. Springer Science+Business Media B.V., 2006 Gas exchange nationallicence Water potential nationallicence F v/ F m nationallicence Oaks nationallicence Thinning nationallicence Rodríguez-Calcerrada J. Unidad de Anatomía, Fisiología y Genética Forestal. Escuela Técnica Superior de Ingenieros de Montes, Universidad Politécnica de Madrid, Ciudad Universitaria s/n, E-28040, Madrid, Spain aut Pardos J. A. Unidad de Anatomía, Fisiología y Genética Forestal. Escuela Técnica Superior de Ingenieros de Montes, Universidad Politécnica de Madrid, Ciudad Universitaria s/n, E-28040, Madrid, Spain aut Gil L. Unidad de Anatomía, Fisiología y Genética Forestal. Escuela Técnica Superior de Ingenieros de Montes, Universidad Politécnica de Madrid, Ciudad Universitaria s/n, E-28040, Madrid, Spain aut Aranda I. Centro de Mejora Genética Forestal (CIFOR), Instituto Nacional de Investigaciones Agrarias (INIA), Apdo. 8111, E-28080, Madrid, Spain aut New Forests Kluwer Academic Publishers 33/1(2007-01-01), 67-80 0169-4286 33:1<67 2007 33 11056 https://doi.org/10.1007/s11056-006-9014-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11056-006-9014-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Rodríguez-Calcerrada J. Unidad de Anatomía, Fisiología y Genética Forestal. Escuela Técnica Superior de Ingenieros de Montes, Universidad Politécnica de Madrid, Ciudad Universitaria s/n, E-28040, Madrid, Spain aut NATIONALLICENCE 700 1- Pardos J. A. Unidad de Anatomía, Fisiología y Genética Forestal. Escuela Técnica Superior de Ingenieros de Montes, Universidad Politécnica de Madrid, Ciudad Universitaria s/n, E-28040, Madrid, Spain aut NATIONALLICENCE 700 1- Gil L. Unidad de Anatomía, Fisiología y Genética Forestal. Escuela Técnica Superior de Ingenieros de Montes, Universidad Politécnica de Madrid, Ciudad Universitaria s/n, E-28040, Madrid, Spain aut NATIONALLICENCE 700 1- Aranda I. Centro de Mejora Genética Forestal (CIFOR), Instituto Nacional de Investigaciones Agrarias (INIA), Apdo. 8111, E-28080, Madrid, Spain aut NATIONALLICENCE 773 0- New Forests Kluwer Academic Publishers 33/1(2007-01-01), 67-80 0169-4286 33:1<67 2007 33 11056 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer