Now showing items 1-4 of 4

  • Long-term ecological research in a human-dominated world 

    Robertson, G. Philip; Collins, Scott L.; Foster, David R.; Brokaw, Nicholas; Ducklow, Hugh W.; Gragson, Ted L.; Gries, Corinna; Hamilton, Stephen K.; McGuire, A. David; Moore, John C.; Stanley, Emily H.; Waide, Robert B.; Williams, Mark W. (American Institute of Biological Sciences, 2012-04)
    The US Long Term Ecological Research (LTER) Network enters its fourth decade with a distinguished record of achievement in ecological science. The value of long-term observations and experiments has never been more important ...
  • 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 ...