PMID: 18213974Jan 25, 2008Paper

Hierarchical regulation of nitrogen export from urban catchments: interactions of storms and landscapes

Ecological Applications : a Publication of the Ecological Society of America
David Bruce Lewis, Nancy B Grimm

Abstract

In urban catchments of arid central Arizona, we investigate how the export of mineral and organic nitrogen (N) in storm runoff is regulated by interactions between local landscape characteristics and broader scale storm features. First, we test whether N export is more a function of (1) processes that affect N concentration in runoff or (2) the propensity of the catchment to convey rainfall as runoff. With data pooled across catchments, the mass of N in export (load) is determined by processes regulating runoff N concentration. There are exceptions when catchments are examined individually, where N load from some catchments is determined by the hydrologic responsiveness of the catchment. Second, we investigate the relationship between N export and catchment features. Loads per catchment area were greater from more impervious catchments, probably because impervious catchments held more N in a mobilizable phase and conveyed more rainfall as overland flow. Loads per area were lower from larger catchments, possibly owing to more N-retention hot spots in larger catchments. Catchments with the greatest N exports were those with commercial land use, and loads decreased as development became less prevalent or as residential replaced in...Continue Reading

References

Apr 18, 1969·Science·E P Odum
Apr 9, 2001·Science·B J PetersonD D Morrall
Jul 29, 2003·Proceedings of the National Academy of Sciences of the United States of America·E S BernhardtC T Driscoll
Aug 7, 2003·Environmental Science & Technology·Shaun A Watmough, Peter J Dillon
Sep 25, 2003·Oecologia·Nancy B GrimmGilles Pinay

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Citations

Jul 20, 2011·Environmental Management·Henriette I JagerKaty A Smith
May 23, 2012·Ecological Applications : a Publication of the Ecological Society of America·Geneviève S MetsonDaniel L Childers
Sep 24, 2011·Ecological Applications : a Publication of the Ecological Society of America·Solange Filoso, Margaret A Palmer
Jul 8, 2008·The Science of the Total Environment·Jiunn-Der DuhLinda A George
Feb 26, 2019·Environmental Science. Processes & Impacts·Molly K WelshSara K McMillan
Dec 9, 2016·Environmental Management·Colin D BellAnne J Jefferson
May 8, 2014·Environmental Science & Technology·Rebecca L HaleDaniel Childers

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