Relationship between dissolved organic matter quality and microbial community Authors: H. J. Smith, M. Dieser, D. M. McKnight, M. D. SanClements, and Christine M. Foreman, This is a pre-copyedited, author-produced PDF of an article accepted for publication in FEMS Microbiology Ecology following peer review. The version of record is available online at: https:// doi.org/10.1093/femsec/fiy090. Smith HJ, M Dieser, DM McKnight, MD SanClements, CM Foreman, “Relationship between dissolved organic matter quality and microbial community composition across polar glacial environments,” FEMS Microbiology Ecology, July 2018; 94(7):1-10. doi: 10.1016/ j.cmi.2018.01.003 Made available through Montana State University’s ScholarWorks scholarworks.montana.edu RESEARCH ARTICLE Relationship between dissolved organic matter quality and microbial community composition across polar glacial environments H.J. Smith1, M. Dieser1,2, D.M. McKnight3, M.D. SanClements3,4 and C.M. Foreman1,2,*,† 1Center for Biofilm Engineering, Montana State University, Bozeman, MT 59717, USA., 2Department of Chemical and Biological Engineering, Montana State University, Bozeman, MT 59717, USA., 3INSTAAR, University of Colorado Boulder, Boulder, CO 80303, USA. and 4National Ecological Observatory Network, Boulder, CO 80301, USA. ∗Corresponding author: Center for Biofilm Engineering, Montana State University, 311 Barnard Hall, Bozeman, MT 59717, USA. Tel: +406-994-7361; E-mail:
[email protected] One sentence summary: Our results demonstrate the establishment of distinct microbial communities within ephemeral glacial meltwater habitats, with DOM-microbe interactions playing an integral role in shaping communities on local and polar spatial scales. Editor: Marek Stibal †Christine Foreman, http://orcid.org/0000-0003-0230-4692 ABSTRACT Vast expanses of Earth’s surface are covered by ice, with microorganisms in these systems affecting local and global biogeochemical cycles.