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. 2002 Mar;68(3):1312–1318. doi: 10.1128/AEM.68.3.1312-1318.2002

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Copyright © 2002, American Society for Microbiology

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FIG. 1. — Anaerobic ammonium oxidation coupled to nitrate reduction in anoxic marine sediment from Skagerrak station S9 amended with ¹⁵N-ammonium and unlabeled nitrate (filled symbols) compared to a control with ¹⁵N-ammonium only (open symbols). Panels: A, time course of concentrations of nitrate (circles) and nitrite (triangles); B, time course of concentrations of ¹⁵N-ammonium (circles) and ¹⁵N in N₂ (triangles). Examples are from May 2000, 1- to 3-cm depth, and are representative of three experiments.