Document Type
Article
Publication Title
Frontiers in Ecology and the Environment
Publication Date
5-2011
Volume
9
Issue
4
Disciplines
Biology | Life Sciences
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.
DOI
10.1890/080211
Rights
Copyright 2011 by the Ecological Society of America. Ashley M Helton, Geoffrey C Poole, Judy L Meyer, Wilfred M Wollheim, Bruce J Peterson, Patrick J Mulholland, Emily S Bernhardt, Jack A Stanford, Clay Arango, Linda R Ashkenas, Lee W Cooper, Walter K Dodds, Stanley V Gregory, Robert O Hall Jr, Stephen K Hamilton, Sherri L Johnson, William H McDowell, Jody D Potter, Jennifer L Tank, Suzanne M Thomas, H Maurice Valett, Jackson R Webster, and Lydia Zeglin 2011. Thinking outside the channel: modeling nitrogen cycling in networked river ecosystems. Frontiers in Ecology and the Environment 9: 229–238. http://dx.doi.org/10.1890/080211.
Recommended Citation
Helton, Ashley M.; Poole, Geoffrey C.; Meyer, Judy L.; Wollheim, Wilfred M.; Peterson, Bruce J.; Mulholland, Patrick J.; Bernhardt, Emily S.; Stanford, Jack Arthur; Arango, Clay; Ashkenas, Linda R.; Cooper, Lee W.; Dodds, Walter K.; Gregory, Stanley V.; Hall, Robert O. Jr.; Hamilton, Stephen K.; Johnson, Sherri L.; McDowell, William H.; Potter, Jody D.; Tank, Jennifer L.; Thomas, Suzanne M.; Valett, H. Maurice; Webster, Jackson R.; and Zeglin, Lydia, "Thinking Outside the Channel: Modeling Nitrogen Cycling in Networked River Ecosystems" (2011). Biological Sciences Faculty Publications. 232.
https://scholarworks.umt.edu/biosci_pubs/232
Comments
Copyright 2011 by the Ecological Society of America. Ashley M Helton, Geoffrey C Poole, Judy L Meyer, Wilfred M Wollheim, Bruce J Peterson, Patrick J Mulholland, Emily S Bernhardt, Jack A Stanford, Clay Arango, Linda R Ashkenas, Lee W Cooper, Walter K Dodds, Stanley V Gregory, Robert O Hall Jr, Stephen K Hamilton, Sherri L Johnson, William H McDowell, Jody D Potter, Jennifer L Tank, Suzanne M Thomas, H Maurice Valett, Jackson R Webster, and Lydia Zeglin 2011. Thinking outside the channel: modeling nitrogen cycling in networked river ecosystems. Frontiers in Ecology and the Environment 9: 229–238. http://dx.doi.org/10.1890/080211.