Population growth, economic development, and dietary changes have drastically increased
the demand for food and water. The resulting expansion of irrigated agriculture into semi …

Groundwater is a vital ecosystem of the global water cycle, hosting unique biodiversity and
providing essential services to societies. Despite being the largest unfrozen freshwater …

Groundwater recharge feeds aquifers supplying fresh-water to a population over 80 million
in Iran—a global hotspot for groundwater depletion. Using an extended database …

Excessive water use in the upper and middle reaches of arid inland river basins will
inevitably lead to the drying up of the lower reaches. Water allocation and ecological water …

Abstract The 'Gibbs Diagram'represents some of the key processes controlling surface water
chemistry. This review highlights that the processes listed on the Gibbs Diagram may not be …

Abstract Groundwater 18O/16O, 2H/1H, 13C/12C, 3H, and 14C data can help quantify
molecular movements and chemical reactions governing groundwater recharge, quality …

Water stable isotopes (18O and 2H) are widely used as ideal tracers to track water through
the soil and to separate evaporation from transpiration. Due to the technical developments in …

Stable isotope ratios of hydrogen and oxygen have been applied to water cycle research for
over 60 years. Over the past two decades, however, new data, data compilations, and …

Current land surface models assume that groundwater, streamflow and plant transpiration
are all sourced and mediated by the same well mixed water reservoir—the soil. However …

Rain recharges soil water storages and either percolates downward into aquifers and
streams or is returned to the atmosphere through evapotranspiration. Although it is …