• Nitrogen excess in North American ecosystems: predisposing factors, ecosystem responses, and management strategies
  Fenn, M.E., M.A. Poth, J.D. Aber, J.S. Baron, B.T. Bormann, D.W. Johnson, A.D. Lemly, S.G. McNulty, D.F. Ryan, and R. Stottlemyer
  Ecological Applications 8(3): 706-733
  1998
• Anthropogenic nitrogen sources and relationships to riverine nitrogen export in the northeastern U.S.A.
  Boyer, E.W., C.L. Goodale, N.A. Jaworski, and R.W. Howarth
  Biogeochemistry 57/58: 137-169
  2002
• The ecological effects of urbanization of coastal watersheds: historical increases in nitrogen loads and eutrophication of Waquoit Bay estuaries
  
  Bowen, J.L., and I. Valiela
  Canadian Journal of Fisheries and Aquatic Sciences 58:1489-1500
  2001
• Policy implications of human-accelerated nitrogen cycling
  
  Mosier A.R., M.A. Bleken, P. Chaiwanakupt, E.C. Ellis, J.R. Freney, R.B. Howarth, P.A. Matson, K. Minami, R. Naylor, K.N. Weeks, and Z. Zhu
  Biogeochemistry 57/58:477-516
  2002
• Nonpoint pollution of surface waters with phosphorus and nitrogen
  
  Carpenter, S.R., N.F. Caraco, D.L. Correll, R.W. Howarth, A.N. Sharpley, and V.H. Smith
  Ecological Applications 8(3): 559-568
  1998
• Beyond global warming: ecology and climate change
  
  Vitousek, P.M.
  Ecology 75(7): 1861-1876
  1994

Note: Nitrogen is not often the sole topic of a publication or Web site. Most publications and Web sites of interest to environmental scientists and managers deal indirectly with nitrogen. For example, they cover best management practices for reducing non-point pollution, controlling agricultural or urban runoff, or evaluating standards for treatment of wastewater. Therefore, the following publications or Web sites are listed because they address pertinent aspects of nutrient research, management, or education.

• Workshop Report 2001: Managing Nitrogen Impacts in the Gulf of Maine
  
  Workshop sponsored by the Cooperative Institute for Coastal and Estuarine Environmental Technology (CICEET), the Gulf of Maine Council on the Marine Environment, and the National Oceanic and Atmospheric Administration's National Ocean Service
• NOAA's Estuarine Eutrophication Survey. Volume 3: North Atlantic Region
  
  National Oceanic and Atmospheric Administration (NOAA), Office of Ocean Resources Conservation and Assessment. Silver Spring, MD. 45 pp.
• National Estuarine Eutrophication Assessment: Effects of Nutrient Enrichment in the Nation's Estuaries
  
  Bricker, S.B., C.G. Clement, D.E. Pirhalla, S.P. Orlando, and D.R.G. Farrow
  NOAA, National Ocean Service, Special Projects Office and the National Centers for Coastal Ocean Science. Silver Spring, MD. 71 pp.
• Nonpoint Source Pollution Existing Sources: Report to the 118th Maine Legislature, Joint Standing Committee on Natural Resources
  
  A report prepared by the Maine Department of Environmental Protection
  1998

• Gulf of Maine Land-Based Pollution Sources Inventory
• Nitrogen Management Strategies and Tools
  
  Buzzards Bay Project, National Estuary Program
• Agricultural Best Management Practices
  
  CSREES New England: Regional Water Quality Program
• NEMO: Nonpoint Education for Municipal Officials
• NOAA Coastal Nonpoint Pollution Control Program
• National Stormwater Best Management Practices (BMP) Database
• Best nonpoint source documents
  
  U.S. Environmental Protection Agency(EPA)