Climate change and Mediterranean ecosystems: plant and soil responses to UV radiation and water availability before and after a perturbation
Taking into account the expected changes in solar UV levels, precipitation and fire regime in the Mediterranean basin, the main goal of this thesis was to evaluate the effects of UV radiation (UV-A and UV-B) and diminished water availability on the biochemical, morphological, physiological and growth traits of common Mediterranean resprouter species (Arbutus unedo and Quercus suber), as well as on C and N pools of a Mediterranean shrubland, before and after a perturbation. As main results, responses of A. unedo plants to enhanced UV-B were mainly addressed to the reinforcement of the antioxidant machinery, while Q. suber augmented UV-screening capacity to face UV-B enhancement. At ecosystem level, UV-A and UV-B had opposite effects on soil processes related to C and N cycles, and these effects were often emphasized under reduced precipitation. In addition, the responses observed in plants and soil were different before and after the perturbation.
Copyright (c) 2018 Laura Díaz Guerra
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
Authors, or their employers, will retain ownership of copyright. However, original publication in the Bulletin should be always cited upon republication in unaltered or altered form. The UV4Plants Bulletin contents will be published under one of the Creative Commons Licenses, by default CC BY-SA 4.0, but at the request of the authors, other more restrictive (CC BY-ND 4.0, CC BY-NC 4.0) or less restrictive (CC BY 4.0) licenses can be used for individual articles. https://creativecommons.org/