Altered food web structure and C-flux pathways associated with mineralisation of organic amendments to agricultural soil

► Soil amendment with compost increased nematode and microbial abundance. ► Compost, but not slurry amendment, altered soil microbial community structure. ► Plant-inputs increased mineralisation of organic carbon in compost-amended soil. ► Turnover of soil carbon was linked to flux of plant-carbon through the food-web. ► Mineralisation of the compost amendment was coupled to plant growth.