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Contrasting nitrogen and phosphorus budgets in urban watersheds and implications for managing urban water pollution [1]

Urban waters remain widely impaired by excess nutrients, despite substantial management efforts. We present a comparison of urban watershed nitrogen (N) and phosphorus (P) budgets. Household actions of lawn fertilization and pet ownership were responsible for the majority of watershed N and P inputs, respectively. N and P exhibited contrasting dynamics within watersheds. Watersheds exported most or all P inputs via stormwater runoff, likely contributing to surface water degradation. High apparent N retention likely resulted from unmeasured watershed N losses to the atmosphere and groundwater. These contrasting dynamics suggest that N management should emphasize reducing watershed inputs, whereas P management should focus on reducing watershed P inputs and transport from vegetated landscapes to streets and storm drains.

Original Source [2]

Publication Date: 
04/04/2017
Sarah E. Hobbie [3], Jacques C. Finlay [4], Benjamin D. Janke & et al [5]
Proceedings of the National Academy of Sciences [6]
1-6
Tags:
Water Pollution [7], Ecosystem Services [8], Mississippi [9], Rivers [10], River Pollution [11], United States Of America (US) [12], Waste Disposal [13]

Technology Partners: MimirTech

Source URL: http://admin.indiaenvironmentportal.org.in/feature-article/contrasting-nitrogen-and-phosphorus-budgets-urban-watersheds-and-implications

Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/contrasting-nitrogen-and-phosphorus-budgets-urban-watersheds-and-implications
[2] http://www.pnas.org/content/early/2017/03/28/1618536114
[3] http://admin.indiaenvironmentportal.org.in/category/author/sarah-e-hobbie
[4] http://admin.indiaenvironmentportal.org.in/category/author/jacques-c-finlay
[5] http://admin.indiaenvironmentportal.org.in/category/author/benjamin-d-janke-et-al
[6] http://admin.indiaenvironmentportal.org.in/category/journal/proceedings-national-academy-sciences
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-pollution
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ecosystem-services
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/mississippi
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/rivers
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/river-pollution
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/united-states-america-us
[13] http://admin.indiaenvironmentportal.org.in/category/thesaurus/waste-disposal