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A positive relationship between the abundance of ammonia oxidizing archaea and natural abundance δ15N of ecosystems
Institution:1. Department of Biological Sciences, Northern Arizona University, P.O. Box 5640, Flagstaff, AZ 86011, USA;2. Ecosystem Science & Society Center, Northern Arizona University, P.O. Box 5640, Flagstaff, AZ 86011, USA;3. School of Forestry, Northern Arizona University, P.O. Box 5018, Flagstaff, AZ 86011, USA;1. Istanbul Technical University, Faculty of Civil Engineering, Environmental Engineering Department, 34469 Maslak, Istanbul, Turkey;2. Université de Lorraine, Laboratoire de Chimie Physique et Microbiologie pour l''Environnement (LCPME), UMR 7564, CNRS, 15 Avenue du Charmois, 54500 Vandoeuvre-lès-Nancy, France;3. Université de Lorraine, Laboratoire Réactions et Génie des Procédés, UMR 7274, CNRS, 1 rue Grandville, France;4. ENVIS Energy and Environmental Systems R&D Ltd, ?TU Ar? Teknokent, Ar? 1 Building No.16, Maslak 34469, Turkey;1. College of Geographical Science, Fujian Normal University, Fuzhou 350007, China;2. State Key Laboratory for Subtropical Mountain Ecology of the Ministry of Science and Technology and Fujian Province, Fujian Normal University, Fuzhou 350007, China;3. Laboratory of Microbial Ecology and Matter Cycles, School of Marine Sciences, Sun Yat-Sen University, Zhuhai 519082, China;4. Department of Geography and Resource Management, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China;1. Department of Civil, Architectural and Environmental Engineering, Missouri University of Science and Technology, Rolla, MO 65409, United States;2. Frontier Environmental Technology, 12687 Cinnamon Court, Rolla, MO 65401, United States
Abstract:We present a significant relationship between the natural abundance isotopic composition of ecosystem pools and the abundance of a microbial gene. Natural abundance 15N 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 δ15N of total soil or DNA suggesting that ammonia oxidizing archaea play an important role in ecosystem N release.
Keywords:Soil DNA  Nitrification  Ammonia oxidation  Ammonia oxidizing archaea  Ecosystem N release
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