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Spatial Variability of Nitrate Concentrations under Diverse Conditions in Tributaries to a Lake Watershed
Citation:
GOLDEN, H. E., E. W. Boyer, M. G. Brown, S. T. PURUCKER, AND R. H. Germain. Spatial Variability of Nitrate Concentrations under Diverse Conditions in Tributaries to a Lake Watershed. JOURNAL OF THE AMERICAN WATER RESOURCES ASSOCIATION. American Water Resources Association, Middleburg, VA, 45(4):945-962, (2009).
Impact/Purpose:
This study is particularly important scientifically, as it refines our understanding of how landscape-scale variables work concomitantly to deliver NO3-N to surface water systems.
Description:
Nitrate-nitrogen (NO3-N) concentrations in stream water often respond uniquely to changes in inter-annual (e.g., biological N uptake, precipitation) conditions in individual catchments. In this paper, we assess (1) how the spatial distribution of NO3-N concentrations varies across a dense network of non-nested catchments and (2) how relationships between multiple landscape factors (within whole catchments and hydrologically-sensitive areas of the catchments) and stream NO3-N are expressed under a variety of annual conditions.