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Ecological Processes
Figure 3 | Ecological Processes

Figure 3

From: Ammonia-oxidizing archaea and bacteria are structured by geography in biological soil crusts across North American arid lands

Figure 3

Canonical correspondence analysis (CCA) across all study sites. The dependent variables (ammonia-oxidizing gene abundance and community data) ordinate along a gradient that is driven by vectors related to the independent variables (environmental factors). AOA/AOB, ratio of archaeal to bacterial amoA; MAT, mean annual temperature; MAP, mean annual precipitation; c, Chihuahuan Desert; p, Colorado Plateau; g, Great Basin; and s, Sonoran Desert.

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