. . "Rotbuche" . . "Rotbuche." . "Ektotrophe Mykorrhiza" . . "Ektotrophe Mykorrhiza." . . . . . . . . "Functional diversity of beech (Fagus sylvatica L.) ectomycorrhizas with respect to nitrogen nutrition in response to plant carbon supply" . "Stickstoffstoffwechsel" . . "Stickstoffstoffwechsel." .