Fig. 2: Changes in abundance of archaeal and bacterial amoA genes during incubation of soil microcosms for 24 days. | The ISME Journal

Fig. 2: Changes in abundance of archaeal and bacterial amoA genes during incubation of soil microcosms for 24 days.

From: The consequences of niche and physiological differentiation of archaeal and bacterial ammonia oxidisers for nitrous oxide emissions

Fig. 2

Quantification was performed on extracted DNA from destructively sampled soil microcosms that were amended with fertiliser or water only (no fertiliser) in combination with 1-octyne or no inhibitor. a, b present data in which NH4+ was supplied at a low continuous rate, through slow mineralisation of native organic nitrogen (phases 1 and 2) or of polymethylene urea (phase 2). c, d present data in which NH4+ was supplied at a single high concentration, through rapid mineralisation of free urea within the slow-release fertiliser (phase 1) or through addition of urea (phase 2). Representation of phases 1 and 2 and treatments are as described in the legend for Fig. 1. Mean concentrations and standard errors of triplicate microcosms are plotted. Differences in temporal changes were assessed by comparing confidence intervals of regression analysis (see Figs. S2 and S3)

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