Fig. 1: National pattern of microbial growth rates.
From: The biogeography of soil microbiome potential growth rates
a One-way analysis of variance tests the differences in microbial biomass-specific potential growth rates (Gmass) among ecosystems of desert grassland (n = 33), temperate grassland (n = 45), alpine grassland (n = 69), tropical forest (n = 24), subtropical forest (n = 57), temperate forest (n = 54), boreal forest (n = 30), and alpine forest (n = 24) (One-way analysis of variance with two-sided test: F7,328 = 52.61, P < 0.001). Lowercase letters above the box indicate a significant difference among ecosystems (Duncan multiple comparisons with two-sided test). Center line is the median. Box limits are the upper and lower quartiles. Whiskers are 1.5 times interquartile range. b Relationship between Gmass and aridity index (Two-sided test, y = 0.76ln(x) – 2.49). MBC is microbial biomass carbon. c Relationship between Gmass and mean annual temperature within grasslands (Two-sided test, y = −0.12x + 0.10) and forests (Two-sided test, y = −0.02x + 0.71). ln is natural logarithm. Source data are provided as a Source Data file.
