@article{TEXTUAL,
      recid = {10643},
      author = {Gibbons, Sean M. and Jones, Edwin and Bearquiver, Angelita  and Blackwolf, Frederick and Roundstone, Wayne and Scott,  Nicole and Hooker, Jeff and Madsen, Robert and Coleman,  Maureen L. and Gilbert, Jack A.},
      title = {Human and Environmental Impacts on River Sediment  Microbial Communities},
      journal = {PLOS ONE},
      address = {2014-05-19},
      number = {TEXTUAL},
      abstract = {<p>Sediment microbial communities are responsible for a  majority of the metabolic activity in river and stream  ecosystems. Understanding the dynamics in community  structure and function across freshwater environments will  help us to predict how these ecosystems will change in  response to human land-use practices. Here we present a  spatiotemporal study of sediments in the Tongue River  (Montana, USA), comprising six sites along 134 km of river  sampled in both spring and fall for two years. Sequencing  of 16S rRNA amplicons and shotgun metagenomes revealed that  these sediments are the richest (∼65,000 microbial  ‘species’ identified) and most novel (93% of OTUs do not  match known microbial diversity) ecosystems analyzed by the  Earth Microbiome Project to date, and display more  functional diversity than was detected in a recent review  of global soil metagenomes. Community structure and  functional potential have been significantly altered by  anthropogenic drivers, including increased pathogenicity  and antibiotic metabolism markers near towns and metabolic  signatures of coal and coalbed methane extraction  byproducts. The core (OTUs shared across all samples) and  the overall microbial community exhibited highly similar  structure, and phylogeny was weakly coupled with functional  potential. Together, these results suggest that microbial  community structure is shaped by environmental drivers and  niche filtering, though stochastic assembly processes  likely play a role as well. These results indicate that  sediment microbial communities are highly complex and  sensitive to changes in land use practices.</p>},
      url = {http://knowledge.uchicago.edu/record/10643},
}