Nitroge Backwater of the Upper n Cycling and Fate in a Floodplain Mississippi River
نویسنده
چکیده
PURPOSE: Backwaters connected to large rivers efficiently retain nitrate and can play an important role in reducing downstream loading to coastal marine environments. However, biotic assimilation and transient storage can account for a significant portion of the nitrate uptake versus denitrification. The fate of this nitrogen (N) pool is largely unknown. Is assimilated nitrate stored temporarily and exported from the system later as another N species or is it eventually routed from recycling pathways to denitrification or burial? This information is critical for modeling and managing large river-floodplain systems. The objective of this research was to examine N fluxes and transformations in a backwater system of the Upper Mississippi River within the context of an N budget in order to provide more insight into the fate of nitrate.
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