CLIMEX Climate Change Experiment: Final report on Phase I the first year of treatment May 1994 - Desember 1994

Catchment ecosystems are expected to show a cascade of responses to increased CO2 and temperature. The first expected step was observed in the first year of treatment increased CO2 changed rates of photosynthesis and stomatal densities in several of the major plant species present at Risdalsheia. An increase in biomass of Caluna in response to elevated CO2 is also apparent. These responses are expected to cause further changes in soil and soil solution chemistry and ultimately runoff water, with time delays at each step. European Commission Norwegian Ministry of Environment The Research Council of Norway National Environment Research Council (UK) Hydrogas Norge A/S