DETERMINATION OF ENVIRONMENTAL WATER REQUIREMENTS OF THE GAVKHUNI WETLAND, IRAN: A COMPARISON OF ECOLOGICAL AND HYDROLOGICAL APPROACHES
J. Wetlands Biodiversity (2016) 6: 47-60
This study presents a comparison of two ecological and hydrological approaches for determining environmental water requirements of the Gavkhuni wetland in Iran. Considering the ecological approach, water requirements of the wetland are determined based on a relationship between the biological requirements of a preferred biota (Artemia) and the inflow data on the wetland. The hydrological approach uses a flow duration curve (FDC) to gain a dependable base flow, whose water quality parameters remain at acceptable levels. The results reveal that there is no significant difference between the water requirement calculated by the two approaches, however the hydrological approach, which needs little information comparatively, may be used for those wetlands devoid of enough ecological information, especially in arid and semi-arid regions.
Keywords: ecological and hydrological approaches, environmental water requirements, flow duration curve, Gavkhuni wetland