Functional redundancy and ecological stability of soil microbial community across Mediterranean forest types and management systems.

Veronica Vitagliano
1*
Enrica Picariello
1
Flavia De Nicola
1
1
Dipartimento di Scienze e Tecnologie, Università degli Studi del Sannio, via de Sanctis, Benevento, BN - 82100, Italia

Understanding how forest management practices and environmental factors shape belowground community is crucial for preserving soil biodiversity and ecosystem services. Soil microbial community has a key role in soil functioning and its responses to management regime and seasonal dynamics can strongly influence ecosystem processes.This study investigated the influence of forest type (Beech and Turkey oak), forest management (high forest and coppice), and season on the structure and functioning of the soil microbial community in the Matese area (Southern Apennines, Italy). Soil microbial community was characterized through enzymatic activities, Community-Level Physiological Profiling, bacterial and fungal metabarcoding. The integration of multivariate and variation partitioning analyses revealed that forest type was the main factor shaping both soil microbial function and structure. Seasonal variations primarily affected microbial functional responses, whereas community structure was mainly influenced by forest management practices.To better understand these findings, in each forest system we further explored the long-term effects of coppice management by focusing on structural and functional stability of soil microbial community, through betadispersion analysis, Mantel test, co-occurrence network analysis and the associated Network Stability Index (NSI).In soil under beech, our results revealed that long-term coppicing modified the relative abundance of specific bacterial and fungal orders, without impairing microbial metabolism. In soil under turkey oak, coppicing induced a shift in soil microbial community structure and carbon substrates utilization. The application of the multi-metric NSI demonstrated that overall microbial networks did not differ significantly between management regimes.These results showed the high functional redundancy of soil microbial communities, which helped maintain microbial functioning and despite coppice-induced some changes in community structure. Overall, the coppicing regimes adopted in the investigated Mediterranean forest systems did not compromise the stability of soil microbial communities.

Ecologia del suolo: dalla conoscenza alla gestione sostenibile
Copyright © 2026 S.IT.E. - Italian Society of Ecology
screen