| Autor: |
González-Muñoz N; BIOGECO, INRA, Université de Bordeaux, Pessac, France., Sterck F; Forest Ecology and Forest Management Group, Wageningen University & Research, Wageningen, The Netherlands., Torres-Ruiz JM; BIOGECO, INRA, Université de Bordeaux, Pessac, France., Petit G; Università degli Studi di Padova, Dep. TeSAF, Legnaro (PD), Italy., Cochard H; PIAF, INRA, Université Clermont-Auvergne, Clermont-Ferrand, France., von Arx G; Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Birmensdorf, Switzerland.; Climatic Change and Climate Impacts, Institute for Environmental Sciences, Geneva, Switzerland., Lintunen A; Department of Forest Sciences, University of Helsinki, Helsinki, Finland., Caldeira MC; Forest Research Centre, School of Agriculture, University of Lisbon, Tapada da Ajuda, Lisboa, Portugal., Capdeville G; BIOGECO, INRA, Université de Bordeaux, Pessac, France., Copini P; Forest Ecology and Forest Management Group, Wageningen University & Research, Wageningen, The Netherlands.; Wageningen Environmental Research (Alterra), Wageningen, The Netherlands., Gebauer R; Department of Forest Botany, Dendrology and Geobiocoenology, Mendel University, Zemědělská 3, Brno, Czech Republic., Grönlund L; Department of Forest Sciences, University of Helsinki, Helsinki, Finland., Hölttä T; Department of Forest Sciences, University of Helsinki, Helsinki, Finland., Lobo-do-Vale R; Forest Research Centre, School of Agriculture, University of Lisbon, Tapada da Ajuda, Lisboa, Portugal., Peltoniemi M; Natural Resources Institute Finland (Luke), Latokartanonkaari 9, Helsinki, Finland., Stritih A; Swiss Federal Institute of Technology ETH, Planning of Landscape and Urban Systems, Zurich, Switzerland., Urban J; Department of Forest Botany, Dendrology and Geobiocoenology, Mendel University, Zemědělská 3, Brno, Czech Republic., Delzon S; BIOGECO, INRA, Université de Bordeaux, Pessac, France. |
| Abstrakt: |
Many studies have reported that hydraulic properties vary considerably between tree species, but little is known about their intraspecific variation and, therefore, their capacity to adapt to a warmer and drier climate. Here, we quantify phenotypic divergence and clinal variation for embolism resistance, hydraulic conductivity and branch growth, in four tree species, two angiosperms (Betula pendula, Populus tremula) and two conifers (Picea abies, Pinus sylvestris), across their latitudinal distribution in Europe. Growth and hydraulic efficiency varied widely within species and between populations. The variability of embolism resistance was in general weaker than that of growth and hydraulic efficiency, and very low for all species but Populus tremula. In addition, no and weak support for a safety vs. efficiency trade-off was observed for the angiosperm and conifer species, respectively. The limited variability of embolism resistance observed here for all species except Populus tremula, suggests that forest populations will unlikely be able to adapt hydraulically to drier conditions through the evolution of embolism resistance. |
