Nitrate is a
limiting nutrient for plant growth and vital for crop production to increase
agricultural productivity. However, its excessive presence
in aquatic environment poses risk turning in to major aquatic ecosystem
perturbation.
Dissolved nitrate
from lands to waterways is mainly exported via runoff and leaching. The
transport of nitrate in a river is a function of the streamflow rate and its
concentration, which render to the seasonal variation.
Therefore, the
aim of this study was to assess the seasonal variation of flow and nitrate
flux. Streamflow data of the Gilgel Gibe River for the period of two years (2013-2014)
were used.
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