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OXIDIZED NITROGEN IN PRECIPITATION, THROUGHFALL, AND STREAMFALL FROM A FORESTED WATERSHED IN OKLAHOMA 1
Author(s) -
Lawrence Stephen J.,
Wigington Parker J.
Publication year - 1987
Publication title -
jawra journal of the american water resources association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.957
H-Index - 105
eISSN - 1752-1688
pISSN - 1093-474X
DOI - 10.1111/j.1752-1688.1987.tb00857.x
Subject(s) - throughfall , watershed , streamflow , hydrology (agriculture) , environmental science , precipitation , storm , nitrogen , hydrograph , nitrate , surface runoff , base flow , drainage basin , geology , soil water , soil science , chemistry , ecology , geography , meteorology , cartography , geotechnical engineering , organic chemistry , machine learning , computer science , biology
Oxidized nitrogen (nitrite + nitrate N) concentrations were measured from bulk precipitation, bulk through‐fall, and streamflow in a 7.86 hectare forested watershed in southeastern Oklahoma during the wet season from March through June 1983. Oxidized nitrogen inputs comparable to results of other studies were recorded during the 19 rainstorms sampled. Oxidized nitrogen concentrations appeared to increase after rainfall interacted with the pine and hardwood canopies and were inversely related to both rainfall and through‐fall depth. Oxidized N concentrations in streamflow were greatest during the rising limb of storm flow with subsequent decreases during the falling limb of storm hydrographs and lowest during base flow. The oxidized N inputs from bulk precipitation were considerably greater than outputs from streamflow resulting in a net retention of oxidized nitrogen within the watershed during the study period.