Acknowledgements

Many thanks are due to Milan Chytrý, Julian Dring, Stephan Hennekens, Martin Kočí, Ilona Kuželová, Monika Janišová, Michal Hájek, Helge Bruelheide and others for their comments and helpful information on program running. Development of JUICE program, some used analytical methods and preparation of this manual were funded from the grant GAČR 206/99/1523, MSM 143100010 and GA206/02/0957.