Resumen de Canvi climàtic i estequiometria de nutrients forestals. Els motors de la composició elemental en fulles de plantes llenyoses
This thesis focuses on the elemental chemical composition of the leaves of woody plants and aims to establish ecological relationships with it. Throughout its different chapters it explores the elementary foliar composition at regional level, through field experiments, at continental European level and finally at global level, through modeling. In conjunction, stoichiometric relationships are established with nitrogen deposition, drought, defoliation, environmental conditions, and ecological competition. In addition, the thesis is framed within the concept of the biogeochemical niche, which is presented as a quantitative alternative to the classic ecological theory of the niche. Thus in this thesis it is intended to use the chemistry of the leaves as an indicator of the ecological and health status of plant ecosystems as well as to relate it to the effects of climate change and the human footprint.
