Research is also needed to develop water quality and biological criteria appropriate for desert climates, examine processes that control the movement of sediments and pollutants, develop models to describe the movement of water and chemicals during artificial recharge of groundwater, and understand the effect of extreme hydrologic variability characteristic of desert environments on aquatic ecosystems.
(Research; is also needed; to develop water quality and biological criteria appropriate for desert climates) (processes; control; the movement of sediments and pollutants)
Research processes
is also needed control
to develop water quality and biological criteria appropriate for desert climates
the movement of sediments and pollutants