caa a22 4500 469098082 CHVBK 20180323133037.0 cr unu---uuuuu 170328e19920801xx s 000 0 eng 10.1007/BF00317785 doi (NATIONALLICENCE)springer-10.1007/BF00317785 Photosynthesis in willows ( Salix × dasyclados ) grown at different CO2 concentrations and fertilization levels [Elektronische Daten] [J. Silvola, U. Ahlholm] Summary: Willows (Salix x dasyclados) were grown for 4 months in growth chambers at four nutrient and CO2 levels, and photosynthesis measurements were made during the latter half of this period. Photosynthesis became saturated at lower light intensities at low CO2 concentrations than at higher ones. The effect of CO2 concentration on photosynthesis was greater at higher temperatures. The willows grown at the highest CO2 concentration (1000 ppm) had a lower photosynthetic capacity than the others when measured at various concentrations. The effect of nutrient status on photosynthesis clearly increased with rising CO2 concentrations. Although photosynthetic acclimation took place to a certain extent at higher CO2 concentrations, photosynthesis still remained higher the higher the growth concentration was. At each CO2 level photosynthesis increased contemporaneously with leaf nitrogen content, but at each fertilization level a rise in CO2 concentration slightly increased photosynthesis and reduced the nitrogen content. The relative increase in photosynthesis achieved by a rise in CO2 was greater than the corresponding increase in biomass growth, whereas the effect of fertilization was greater on biomass growth than on the rate of photosynthesis in the same willows. Springer-Verlag, 1992 Photosynthesis nationallicence CO2 concentration nationallicence Nutrient status nationallicence Light intensity nationallicence Temperature nationallicence Silvola J. Department of Biology, University of Joensuu, P.O. Box 111, SF-80101, Joensuu, Finland aut Ahlholm U. Department of Biology, University of Joensuu, P.O. Box 111, SF-80101, Joensuu, Finland aut Oecologia Springer-Verlag 91/2(1992-08-01), 208-213 0029-8549 91:2<208 1992 91 442 https://doi.org/10.1007/BF00317785 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00317785 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Silvola J. Department of Biology, University of Joensuu, P.O. Box 111, SF-80101, Joensuu, Finland aut NATIONALLICENCE 700 1- Ahlholm U. Department of Biology, University of Joensuu, P.O. Box 111, SF-80101, Joensuu, Finland aut NATIONALLICENCE 773 0- Oecologia Springer-Verlag 91/2(1992-08-01), 208-213 0029-8549 91:2<208 1992 91 442 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer