Figure S3 : Potential activity of α-glucosidase (AG), β-glucosidase (BG), β-xylosidase (BX), cellobiohydrolase (CB), N-acetylglucosaminidase (NAG), leucine aminopeptidase (LAP), and acid phosphatase (AP) normalized by soil microbial biomass (mol phospholipid fatty acid [PLFA]) as a function of depth throughout the top meter of soil across sites. Boxplots show the distribution of extracellular enzyme activities at each depth and the blue line shows the best-fit loess regression with standard error highlighted by the gray ribbon. Note: scale of x-axis differs among enzymes.