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BES

Urban Watersheds

BES scientists discovered that urban watersheds retain substantial amounts of nitrogen, an important water pollutant, and prevent it from flowing into downstream waters. This finding underscores the valuable service that green spaces in cities and suburbs provide by safeguarding water quality and protecting coastal waters.

Groffman, P.M., C.O. Williams, R.V. Pouyat, L.E. Band and I.C. Yesilonis. 2009. Nitrate leaching and nitrous oxide flux in urban forests and grasslands. Journal of Environmental Quality 38:1848-1860.
Kaushal, S.S., P M. Groffman, L.E. Band, C.A. Shields, R.P. Morgan, M.A. Palmer, K.T. Belt, C.M. Swan, S.E.G.Findlay and G.T. Fisher. 2008. Interaction between climate and land use amplifies watershed nitrogen export. Environmental Science & Technology 42:5872-5878. DOI: 10.1021/es800264f
Groffman, P.M., N.L. Law, K.T. Belt, L.E. Band and G.T. Fisher. 2004. Nitrogen fluxes and retention in urban watershed ecosystems. Ecosystems 7:393-403.
Holly Beyar, Project Facilitator, Baltimore Ecosystem Study, LTER
BES LTER scientist sampling water at a long-term suburban watershed site in Baltimore County, MD.
Joseph Bushey

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