Pulse Brain · Growing Health Evidence Index
Peer-reviewed

Size exclusion experiment in a grassland field unravels top–down control of the soil fauna on microbial community assembly

Mathilde Jeanbille, Sana Romdhane, Marie‐Christine Breuil, David Bru, Stefan Geisen, Arnaud Mounier, Aymé Spor, Laurent Philippot

Ecology Letters · 2024

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Summary

Highly diverse and abundant organisms coexist in soils. However, the contribution of biotic interactions between soil organisms to microbial community assembly remains to be explored. Here, we assess the extent to which soil fauna can shape microbial community assembly using an exclusion experiment in a grassland field to sort soil biota based on body size. After 1 year, the exclusion of larger fauna favoured phagotrophic protists, with increases up to 32% in their proportion compared to the no-mesh treatment. In contrast, members of the bacterial community and to a lesser extent of the fungal community were negatively impacted. Shifts in bacterial but not in fungal communities were best explained by the response of the protistan community to exclusion. Our findings provide empirical evide

Subject
Grassland & pasture systems
Source type
Peer-reviewed study
System type
Other
DOI
10.1111/ele.14442
Catalogue ID
SNmojxdc7c-5mrrk5
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