Dagmar Gormsen

TL;DR: Results of the 2-year study showed that diverse plant species mixtures were more effective at reducing the number of natural colonisers than the average low-diversity treatment, however, the effect of enhanced species diversity strongly depended on the species composition of the low-Diversity treatments used for comparison.

TL;DR: The hypothesis that plant species diversity may have idiosyncratic effects on soil communities, even though studies on a longer term could reveal time lags in the response to changes in composition and biomass production of plant communities, is supported.

TL;DR: It is argued that the performance of a species assemblage is influenced mostly by the identity of species and the diversity effect is mainly due to the 'chance' or 'sampling' effect with increasing number of species the probability that an important species will be included in the mixture increases.

TL;DR: The biomass of AM fungi was stimulated by earthworms, but that fungal dispersal over 20 cm was not influenced, and spore production and mycorrhizal inoculum potential were not affected by the presence of soil fauna.

TL;DR: The community composition of mites changed in response to management of the plant community, as shown by canonical correspondence analysis, andmite parasitic on insects were not present on fields with continued agricultural practice in Sweden and The Netherlands, and might be regarded as an indicator of an increase in trophic complexity in the sown and naturally colonized treatments.