In this study, we aim to clarify the predominant effect of earthworm and invertebrate activity with elevated temperature in sandy high‐latitude forest soil native to Northern Michigan , using varied C3 ( *Dactylis gomerata*) and C4 (*Andropogon gerardiand *) leaf litter to trace the carbon source and identify carbon stability within the soil. We aim to answer several questions: 1. Will soil invertebrat e presence affect soil carbon efflux? 2. If yes, then will the presence of invertebrates increase CO 2 soil emissions? 3. What is the degree of stability of the carbon sources (C3 v.s. C4)? and concurrently, 4. What is the effect of temperature increase ( + 2.5 °C, + 5 °C ) on the CO 2 soil emissions?