Grantee Research Project Results
2010 Progress Report: Nonlinear and Threshold Responses to Environmental Stressors in Land-river Networks at Regional to Continental Scales
EPA Grant Number: R833261Title: Nonlinear and Threshold Responses to Environmental Stressors in Land-river Networks at Regional to Continental Scales
Investigators: Melillo, Jerry , Vörösmarty, Charles J. , Peterson, Bruce J. , Wollheim, Wil , Felzer, Benjamin S. , Kicklighter, David Wesley
Current Investigators: Melillo, Jerry , Peterson, Bruce J. , Vörösmarty, Charles J. , Felzer, Benjamin S. , Kicklighter, David Wesley , McClelland, James , Wollheim, Wil
Institution: Marine Biological Laboratory , University of New Hampshire
EPA Project Officer: Packard, Benjamin H
Project Period: September 1, 2007 through August 31, 2010 (Extended to August 31, 2011)
Project Period Covered by this Report: September 1, 2009 through August 31,2010
Project Amount: $899,191
RFA: Nonlinear Responses to Global Change in Linked Aquatic and Terrestrial Ecosystems and Effects of Multiple Factors on Terrestrial Ecosystems: A Joint Research Solicitation- EPA, DOE (2005) RFA Text | Recipients Lists
Research Category: Climate Change , Aquatic Ecosystems
Objective:
- Expand and refine our existing data archives with new high resolution data that are relevant for Aquatic Ecosystem analysis;
- Revise our Framework for Aquatic Modeling of the Earth Systems (FrAMES) to better serve the AEM both in terms of providing interfaces to our data archive and enable coupling of AEM components;
- Improve the representation of constituent processes in our coupled Aquatic Ecosystem Model;
- Improve the representation of the water and nitrogen cycles in TEM; and
- Apply coupled AEM-TEM to identify nonlinear threshold behaviors in freshwater ecosystems.
Progress Summary:
1 Aquatic Database Development
1.1 Near Real-time Climate Data Archive
1.2 River Network and Corresponding Elevation
1.3 Wetland Database
Figure 1. Wetland distribution form a) the National Wetland Inventory, and b) the National Land Cover Data set.
1.4 Developing Wastewater Treatment Plant Database
Figure 2. Distribution of wastewater treatment facilities from the Clean Water Needs Surveys, categorized by treatment level.
Figure 3. Predicted mean annual water temperature, aggregaed from daily
predicted temperatures, compared against observed mean annual water
temperature, derived from the GEMS Water data set (Stewart et.al., 2010)
Figure 4. Predicted a) POC and b) DOC loadings into the entire river network of the Mississippi RIver network
assuming potential and contemporary land use. DOC is much more dependents on interannual variation in
moisture conditions. Both show considerable reductions between potential and contemporary periods, suggesting
that heterotrophy has dec,ined considerably in aquatic systems.
References:
Journal Articles on this Report : 8 Displayed | Download in RIS Format
Other project views: | All 28 publications | 13 publications in selected types | All 13 journal articles |
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Type | Citation | ||
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Alexander RB, Bohlke JK, Boyer EW, David MB, Harvey JW, Mulholland PJ, Seitzinger SP, Tobias CR, Tonitto C, Wollheim WM. Dynamic modeling of nitrogen losses in river networks unravels the coupled effects of hydrological and biogeochemical processes. Biogeochemistry 2009;93(1-2):91-116. |
R833261 (2008) R833261 (2009) R833261 (2010) R833261 (Final) R834187 (2010) R834187 (2011) R834187 (2012) R834187 (2013) R834187 (Final) |
Exit Exit Exit |
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Beaulieu JJ, Tank JL, Hamilton SK, Wollheim WM, Hall Jr. RO, Mulholland PJ, Peterson BJ, Ashkenas LR, Cooper LW, Dahm CN, Dodds WK, Grimm NB, Johnson SL, McDowell WH, Poole GC, Valett HM, Arango CP, Bernot MJ, Burgin AJ, Crenshaw CL, Helton AM, Johnson LT, O'Brien JM, Potter JD, Sheibley RW, Sobota DJ, Thomas SM. Nitrous oxide emission from denitrification in stream and river networks. Proceedings of the National Academy of Sciences of the United States of America 2011;108(1):214-219. |
R833261 (2010) R833261 (Final) R834187 (2010) R834187 (2011) R834187 (2012) R834187 (2013) R834187 (Final) |
Exit Exit Exit |
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Felzer BS, Cronin TW, Melillo JM, Kicklighter DW, Schlosser CA. Importance of carbon-nitrogen interactions and ozone on ecosystem hydrology during the 21st century. Journal of Geophysical Research-Biogeosciences 2009;114(G1):G01020 (10 pp.). |
R833261 (2008) R833261 (2009) R833261 (2010) R833261 (Final) |
Exit Exit |
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Green MB, Wollheim WM, Basu NB, Gettel G, Rao PS, Morse N, Stewart R. Effective denitrification scales predictably with water residence time across diverse systems. Nature Precedings 2009;3520.1. |
R833261 (2009) R833261 (2010) R833261 (Final) R834187 (2010) R834187 (2011) R834187 (2012) R834187 (2013) R834187 (Final) |
Exit Exit Exit |
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Harrison JA, Maranger RJ, Alexander RB, Giblin AE, Jacinthe P-A, Mayorga E, Seitzinger SP, Sobota DJ, Wollheim WM. The regional and global significance of nitrogen removal in lakes and reservoirs. Biogeochemistry 2009;93(1-2):143-157. |
R833261 (2008) R833261 (2009) R833261 (2010) R833261 (Final) R834187 (2010) R834187 (2011) R834187 (2012) R834187 (2013) R834187 (Final) |
Exit |
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Helton AM, Poole GC, Meyer JL, Wollheim WM, Peterson BJ, Mulholland PJ, Bernhardt ES, Stanford JA, Arango C, Ashkenas LR, Cooper LW, Dodds WK, Gregory SV, Hall Jr. RO, Hamilton SK, Johnson SL, McDowell WH, Potter JD, Tank JL, Thomas SM, Valett HM, Webster JR, Zeglin L. Thinking outside the channel: modeling nitrogen cycling in networked river ecosystems. Frontiers in Ecology and the Environment 2011;9(4):229-238. |
R833261 (2010) R833261 (Final) R834187 (2010) R834187 (2011) R834187 (2012) R834187 (2013) R834187 (Final) |
Exit Exit Exit |
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Wollheim WM, Vorosmarty CJ, Bouwman AF, Green P, Harrison J, Linder E, Peterson BJ, Seitzinger SP, Syvitski JPM. Global N removal by freshwater aquatic systems using a spatially distributed, within-basin approach. Global Biogeochemical Cycles 2008;22(2):GB2026. |
R833261 (2008) R833261 (2010) R833261 (Final) |
Exit Exit |
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Wollheim WM, Peterson BJ, Thomas SM, Hopkinson CH, Vorosmarty CJ. Dynamics of N removal over annual time periods in a suburban river network. Journal of Geophysical Research-Biogeosciences 2008;113(G3):G03038. |
R833261 (2008) R833261 (2010) R833261 (Final) |
Exit Exit |
Supplemental Keywords:
Global change, multiple stressors, nonlinear ecosystem response, threshold response, river network, drainage basin, land cover change, ecosystem services, water quality, hydrologic regime, hydrological modeling, multiple scalesProgress and Final Reports:
Original AbstractThe perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Conclusions drawn by the principal investigators have not been reviewed by the Agency.