The maximum ammonia oxidation potential (AOP) of a topsoil in Langhovde, East Antarctica was 22.1±2.4 ng N g–1 dry soil h–1 (2 mM ammonium, 10°C, n=3). This topsoil exhibited twin AOP peaks (1 and 2 mM ammonium) at 10°C, but not at 20°C. Six and ten operational taxonomic units (OTUs) were identified for ammonia-oxidizing bacteria (AOB) and archaea (AOA) amoA, respectively. AOB were classified into Nitrosospira; the two dominant OTUs corresponded to the Mount Everest cluster. AOA were classified into three clusters; Nitrososphaera and Nitrosocosmicus were the two dominant clusters.

中文翻译：

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东南极洲两个无冰区地衣-苔藓植被土壤的氨氧化电位和氨氧化剂

东南极洲 Langhovde 表土的最大氨氧化电位 (AOP) 为 22.1±2.4 ng N g–1 干土 h–1（2 mM 铵，10°C，n=3）。该表土在 10°C 时表现出双 AOP 峰（1 和 2 mM 铵），但在 20°C 时则不然。氨氧化细菌 (AOB) 和古细菌 (AOA) amoA 分别确定了 6 个和 10 个操作分类单位 (OTU)。AOB属于亚硝化螺菌属；两个主要的OTUs对应于珠穆朗玛峰群。AOA 分为三类；Nitrososphaera 和 Nitrosocosmicus 是两个主要簇。