The effect of collembolan grazing on fungal activity in differently managed upland pastures: A microcosm study

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Abstract

Laboratory microcosms containing litter from three tussock grasslands were used to assess the impact of grazing by a collembolan, Onychiurus procampatus, on the abundance, nutrient release, and respiration of the saprotrophic fungus, Phoma exigua. The fungal biomass and respiration rate were significantly reduced only when Collembola were present in excess of mean field densities but perhaps more typical of spatial aggregations in the soil. A high efficiency of nutrient immobilization by P. exigua was demonstrated but nutrient release was not significantly affected by the fauna. Problems associated with the use of microcosms in the simulation of field conditions are discussed. © 1993 Springer-Verlag.

Bibliographical metadata

Original languageEnglish
Pages (from-to)255-262
Number of pages7
JournalBiology and Fertility of Soils
Volume16
Issue number4
DOIs
Publication statusPublished - Oct 1993