How do hydrometeorological storm event variables influence the concentration-discharge hysteresis during events in a páramo ecosystem?

Abstract

Hydrometeorological factors are identified as the main triggering factors of the stream chemistry variability. Proper identification of these factors will provide a deep look into catchments functioning. In this context, studying concentration-discharge (C-Q) relationships represent an optimal manner to assess the solutes delivery mechanisms in the river. Through the use of a high-frequency data set and a correlation analysis, between hydrometeorological storm event variables and a hysteresis index, the following study identified main hydrometeorological controls on the hysteric response in a highmountain tropical catchment. The results let us explore the main groups of hysteresis responses of the studied solutes (Al, Cu, DOC, TNb, Ba, Ca, Mg, Na, Sr, K, Si, Rb) inferring mobilization pathways and event chemical status in terms of enrichment or depletion under different moisture conditions.