1. Department of Forest Mycology and Plant Pathology, Uppsala BioCenter Swedish University of Agricultural Sciences Box 7026 SE‐750 07 Uppsala Sweden
2. UFR des Sciences de la Terre et des Ressources Minières, Département des Sciences du sol Université Felix Houphouët‐Boigny 22 BP 582 Abidjan Côte d'Ivoire
3. Department of Aquatic Sciences and Assessment, Soil‐Water‐Environment Center Swedish University of Agricultural Sciences Box 7050 SE‐750 07 Uppsala Sweden
4. School of Science and Technology Örebro University SE‐701 82 Örebro Sweden