Centre for Ecology and Hydrology, Wallingford
(Great Britain)
(Prof. Dr. C. Neal)
Durham
University
(Great Britain) (Prof. Dr. T. Burt)
University
of Rennes
I (France) (Prof. Dr. L. Aquilina)
Norwegian Institute for Forest and Landscape, Ċs (Norway)
(Prof. Dr. H. Lange)
Swedish Environmental Research Institute Ltd., Göteborg (Sweden) ( Prof. Dr. H. Hultberg, Dr.
F. Moldan)
University
of Basel (Switzerland) (Prof. Dr. P.
Huggenberger)
Leibniz-Institute of Freshwater Ecology and Inland Fisheries,
Berlin
(Germany)
(Prof. Dr. G. Nützmann)
University
of Bayreuth (Germany) (Prof. Dr. Hauhs, Prof. Dr.
Peiffer, Dr.J. Fleckenstein)
University
of Wuppertal (Germany) (Prof. Dr. J. Rinklebe)
Czech
Geological Survey, Prague (Czech Republic)
(Dr. P. Kram, Dr. J. Hruška)
Bavarian Environmental Agency, Hof (Germany) (Dr. J.
Bittersohl, Dr. B. Wagner)
Northwestern Forestry Research Agency, Göttingen (Germany)
(Dr. H. Meesenburg)
IWW Water Centre, Mülheim (Germany) (Dr. A. Bergmann)
ahu AG, Aachen (Germany) (Dr. G. Meiners, Dr. S. Lazar, C. Kaufmann) 