Figure 2
From: Grazing improves C and N cycling in the Northern Great Plains: a meta-analysis

Responses of C and N cycles to grazing in the NGP natural grazing grassland ecosystem.
Solid lines represent the carbon and nitrogen processes of corresponding variables synthesized in our meta-analysis. Numbers indicate the mean changes in the C and N cycles with 95% CI. Asterisks indicate statistical significance (P < 0.05). MBC: microbial biomass carbon?, not clear for root N pool response to grazing. Dash lines represent the processes not clear for grazing due to not enough data points summarized.