Temporal differentiation of soil biota communities and of trophic networks in response to arable crop management strategies

摘要: Promoting diverse and functional biological communities is an important objective of agroecology, with increasing attention given to the role soil biodiversity. In experimental study conducted in actual field conditions, we followed over four years dynamic organisms from microorganisms micro-, meso- macro-fauna a cropping system submitted different treatments that varied tillage, residue management N fertilization rate. Differentiation taxonomic diversity, abundance diversity multiple trophic groups food-web structure was evaluated. A co-statis analysis used investigate joint dynamics functions linked C dynamics. Our demonstrated delayed but effective differentiation biota following implementation agricultural practices. Soil biodiversity throughout time some responding more readily than others. While tillage appeared main factor influence, surprisingly little impact nitrogen could be observed. Significant interactive effect year treatment found on mean level bacterial fungal path ratio, not number Shannon's link diversity. Finally, revealed significant differences co-dynamics between years, mainly drove by conventionally tilled vs reduced treatments. Through its multi-taxonomic approach, present increases our understanding systems helps identify possible consequences for functioning.