5. Conclusions
We found N addition and cropping system strongly influenced soil microbial communities, particularly AMF and Gm- bacteria. Given plant-associated microbes play a significant role in ecosystem-level nutrient cycling, management may be a means of influencing the ecological properties of bioenergy cropping systems. Microbial composition emerging from unfertilized systems that incorporated native plant species resembled those found in undisturbed systems and long-term restorations, which could signal a reclamation of desirable microbially-mediated ecosystem properties. Our findings illustrate the importance of considering the effects of N addition and inclusion of native plant species when designing and establishing bioenergy cropping systems.