Mineralization and nitrification: Archaea dominate ammonia-oxidising communities in grassland soils
Mineralization and nitrification: Archaea dominate ammonia-oxidising communities in grassland soils
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DOI：
10.1016/j.soilbio.2020.107725
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发表时间：
2020-04-01
影响因子：
9.7
通讯作者：
Whitby, Corinne
中科院分区：
文献类型：
--
作者：
Clark, Dave R.;McKew, Boyd A.;Whitby, Corinne
在草原中，氮矿化和硝化作用是重要的过程，并由几个因素控制，包括原位微生物群落组成。硝化作用涉及氨氧化古菌（AOA）和细菌（AOB），虽然AOA和AOB共存于土壤中，但它们对环境特征的反应不同，并且存在AOA/AOB生态位分化的证据。在这里，我们调查了时间变化的N矿化和硝化速率，连同细菌，古菌和氨氧化剂社区在草原土壤中，不同的地质：粘土，绿砂和白垩。在整个地质，氮矿化和硝化速率在秋季比今年其他时间慢。土壤铵库周转时间为
In grasslands, N mineralization and nitrification are important processes and are controlled by several factors, including the in situ microbial community composition. Nitrification involves ammonia oxidising archaea (AOA) and bacteria (AOB) and although AOA and AOB co-exist in soils, they respond differently to environmental characteristics and there is evidence of AOA/AOB niche differentiation. Here, we investigated temporal variation in N mineralization and nitrification rates, together with bacterial, archaeal and ammonia-oxidiser communities in grassland soils, on different geologies: clay, Greensand and Chalk. Across geologies, N mineralization and nitrification rates were slower in the autumn than the rest of the year. Turnover times for soil ammonium pools were