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Thinking outside the channel : modeling nitrogen cycling in networked river ecosystems

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dc.contributor.author Helton, Ashley M.
dc.contributor.author Poole, Geoffrey C.
dc.contributor.author Meyer, Judy L.
dc.contributor.author Wollheim, Wilfred M.
dc.contributor.author Peterson, Bruce J.
dc.contributor.author Mulholland, Patrick J.
dc.contributor.author Bernhardt, Emily S.
dc.contributor.author Stanford, Jack A.
dc.contributor.author Arango, Clay P.
dc.contributor.author Ashkenas, Linda R.
dc.contributor.author Cooper, Lee W.
dc.contributor.author Dodds, Walter K.
dc.contributor.author Gregory, Stanley V.
dc.contributor.author Hall, Robert O.
dc.contributor.author Hamilton, Stephen K.
dc.contributor.author Johnson, Sherri L.
dc.contributor.author McDowell, William H.
dc.contributor.author Potter, Jody D.
dc.contributor.author Tank, Jennifer L.
dc.contributor.author Thomas, Suzanne M.
dc.contributor.author Valett, H. Maurice
dc.contributor.author Webster, Jackson R.
dc.contributor.author Zeglin, Lydia
dc.date.accessioned 2011-07-12T18:30:52Z
dc.date.available 2011-07-12T18:30:52Z
dc.date.issued 2010-09-08
dc.identifier.citation Frontiers in Ecology and the Environment 9 (2011): 229–238 en_US
dc.identifier.uri http://hdl.handle.net/1912/4667
dc.description Author Posting. © Ecological Society of America, 2011. This article is posted here by permission of Ecological Society of America for personal use, not for redistribution. The definitive version was published in Frontiers in Ecology and the Environment 9 (2011): 229–238, doi:10.1890/080211. en_US
dc.description.abstract 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 are critical tools for understanding river-network biogeochemistry. However, limitations inherent in current models restrict our ability to simulate biogeochemical dynamics among diverse river networks. We illustrate these limitations using a river-network model to scale up in situ measures of nitrogen cycling in eight catchments spanning various geophysical and land-use conditions. Our model results provide evidence that catchment characteristics typically excluded from models may control river-network biogeochemistry. Based on our findings, we identify important components of a revised strategy for simulating biogeochemical dynamics in river networks, including approaches to modeling terrestrial–aquatic linkages, hydrologic exchanges between the channel, floodplain/riparian complex, and subsurface waters, and interactions between coupled biogeochemical cycles. en_US
dc.description.sponsorship This research was supported by NSF (DEB-0111410). Additional support was provided by NSF for BJP and SMT (DEB-0614301), for WMW (OCE-9726921 and DEB-0614282), for WHM and JDP (DEB-0620919), for SKH (DEB-0423627), and by the Gordon and Betty Moore Foundation for AMH, GCP, ESB, and JAS, and by an EPA Star Fellowship for AMH. en_US
dc.format.mimetype application/pdf
dc.language.iso en_US en_US
dc.publisher Ecological Society of America en_US
dc.relation.uri http://dx.doi.org/10.1890/080211
dc.title Thinking outside the channel : modeling nitrogen cycling in networked river ecosystems en_US
dc.type Article en_US
dc.identifier.doi 10.1890/080211


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