A positive relationship between the abundance of ammonia oxidizing archaea and natural abundance delta N-15 of ecosystems

作者：Adair Karen; Blazewicz Steven J; Hungate Bruce A; Hart Stephen C; Dijkstra Paul; Schwartz Egbert^*

来源：Soil Biology and Biochemistry, 2013, 65: 313-315.

DOI：10.1016/j.soilbio.2013.05.024

• Natural abundance(15)N Composition
• Soil DNA
• Nitrification
• Ammonia oxidation
• Ammonia oxidizing archaea
• Ecosystem N release

We present a significant relationship between the natural abundance isotopic composition of ecosystem pools and the abundance of a microbial gene. Natural abundance N-15 of soils and soil DNA were analysed and compared with archaeal ammonia oxidizer abundance along an elevation gradient in northern Arizona and along a substrate age gradient in Hawai'i. There was a significant positive correlation between the abundance of archaeal amoA genes and natural abundance delta N-15 of total soil or DNA suggesting that ammonia oxidizing archaea play an important role in ecosystem N release.

• 出版日期2013-10