Now showing items 1-4 of 4

  • Past, present, and future roles of long-term experiments in the LTER Network 

    Knapp, Alan K.; Smith, Melinda D.; Hobbie, Sarah E.; Collins, Scott L.; Fahey, Timothy J.; Hansen, Gretchen J. A.; Landis, Douglas A.; La Pierre, Kimberly J.; Melillo, Jerry M.; Seastedt, Timothy R.; Shaver, Gaius R.; Webster, Jackson R. (American Institute of Biological Sciences, 2012-04)
    The US National Science Foundation—funded Long Term Ecological Research (LTER) Network supports a large (around 240) and diverse portfolio of long-term ecological experiments. Collectively, these long-term experiments have ...
  • Quantifying the production of dissolved organic nitrogen in headwater streams using 15N tracer additions 

    Johnson, Laura T.; Tank, Jennifer L.; Hall, Robert O.; Mulholland, Patrick J.; Hamilton, Stephen K.; Valett, H. Maurice; Webster, Jackson R.; Bernot, Melody J.; McDowell, William H.; Peterson, Bruce J.; Thomas, Suzanne M. (Association for the Sciences of Limnology and Oceanography, 2013-07)
    Most nitrogen (N) assimilation in lake and marine ecosystems is often subsequently released via autochthonous dissolved organic nitrogen (DON) production, but autochthonous DON production has yet to be quantified in flowing ...
  • Stream denitrification across biomes and its response to anthropogenic nitrate loading 

    Mulholland, Patrick J.; Helton, Ashley M.; Poole, Geoffrey C.; Hall, Robert O.; Hamilton, Stephen K.; Peterson, Bruce J.; Tank, Jennifer L.; Ashkenas, Linda R.; Cooper, Lee W.; Dahm, Clifford N.; Dodds, Walter K.; Findlay, Stuart E. G.; Gregory, Stanley V.; Grimm, Nancy B.; Johnson, Sherri L.; McDowell, William H.; Meyer, Judy L.; Valett, H. Maurice; Webster, Jackson R.; Arango, Clay P.; Beaulieu, Jake J.; Bernot, Melody J.; Burgin, Amy J.; Crenshaw, Chelsea L.; Johnson, Laura T.; Niederlehner, B. R.; O'Brien, Jonathan M.; Potter, Jody D.; Sheibley, Richard W.; Sobota, Daniel J.; Thomas, Suzanne M. (2007-06-06)
    Worldwide, anthropogenic addition of bioavailable nitrogen (N) to the biosphere is increasing and terrestrial ecosystems are becoming increasingly N saturated, causing more bioavailable N to enter groundwater and surface ...
  • Thinking outside the channel : modeling nitrogen cycling in networked river ecosystems 

    Helton, Ashley M.; Poole, Geoffrey C.; Meyer, Judy L.; Wollheim, Wilfred M.; Peterson, Bruce J.; Mulholland, Patrick J.; Bernhardt, Emily S.; Stanford, Jack A.; Arango, Clay P.; Ashkenas, Linda R.; Cooper, Lee W.; Dodds, Walter K.; Gregory, Stanley V.; Hall, Robert O.; Hamilton, Stephen K.; Johnson, Sherri L.; McDowell, William H.; Potter, Jody D.; Tank, Jennifer L.; Thomas, Suzanne M.; Valett, H. Maurice; Webster, Jackson R.; Zeglin, Lydia (Ecological Society of America, 2010-09-08)
    Agricultural and urban development alters nitrogen and other biogeochemical cycles in rivers worldwide. Because such biogeochemical processes cannot be measured empirically across whole river networks, simulation models ...