C and N effects on microbial biomass and microbial communities

C.M. Kallenbach and A.S. Grandy. 2011. Controls over soil microbial biomass responses to carbon amendments in agricultural systems: A meta-analysis. Agriculture, Ecosystems, and Environment. 144: 241-252.

Ramirez, K.S., J.M. Craine, N. Fierer. 2012. Consistent effects of nitrogen amendments on soil microbial communities and processes across biomes. Global Change Biology. doi: 10.1111/j.1365-2486.2012.02639.x [pdf]
http://www.colorado.edu/eeb/EEBprojects/FiererLab/Ramirez_etal_GCB_2012.pdf