Das Projekt "Der Einfluss einer erhoehten CO2-Konzentration auf die Entwicklung von Waldbaeumen" wird vom Umweltbundesamt gefördert und von Universität Basel, Departement Integrative Biologie, Botanisches Institut durchgeführt. The influence of elevated CO2 on growth and development of forest tree seedlings is studied in situ in a mixed forest near Basel by using open top chambers. Plots are arranged across a light gradient so that CO2 and light interactions can be studied. Seedlings share soil space and soil resources with adult, canopy trees. We use three CO2 concentrations and higher 5 species to cover nonlinearity of response and biodiversity. Leading Questions: - Are forest trees carbon limited: Today-in the future? - What controls the alpine treeline?