Type of contribution: research paper 1 Number of text pages: 27 2 Number of tables & figures: 2 tables and 8 figures 3 Title: Ammonia-oxidizing bacteria are more responsive than archaea to nitrogen 4 source in an agricultural soil. 5 Authors: Yang Ouyang 1 , Jeanette M. Norton 1* , John M. Stark 2 , Jennifer R 6 Reeve 1 and Mussie Y. Habteselassie 3 7 1 Department of Plants, Soils and Climate, 2 Department of Biology, Utah State 8 University, Logan, UT; 3 Department of Crop & Soil Sciences, University of Georgia - 9 Griffin, Griffin, GA 10 *Corresponding author, 11 4820 Old Main Hill AGS 352 12 Logan Utah 84322-4820 13 Tel. /fax: +1 435-797-2166 /+1 435-797-3376 14 E-mail address: jeanette.norton@usu.edu 15 16 17 18 19 20 21 22 23 24 25 26 27 © 2016. This manuscript version is made available under the Elsevier user license http://www.elsevier.com/open-access/userlicense/1.0/