The naturally occurring isotope radon-222 (222 Rn) is widely employed as a tracer for
groundwater discharge to lakes, lagoons, rivers, estuaries, and coastal oceans. Owing to the …

Geographically isolated wetlands (GIW), depressional landscape features entirely
surrounded by upland areas, provide a wide range of ecological functions and ecosystem …

Understanding the interactions between surface water and groundwater is of considerable
significance for managing water resources and protecting ecosystems in arid and semi-arid …

Environmental tracer methods have been used to quantify groundwater discharge to rivers
for the past few decades. A number of different tracers have been used in these studies …

Baseflow is often considered to be the groundwater discharge component of streamflow. It is
commonly estimated using conceptual models, recursive filters or a combination of the two …

Liquid scintillation counting (LSC) is a major technique not only for measurement of pure
beta emitting radionuclides, but also radionuclides decay by electron capture and alpha …

Lake Urmia (LU) is the second largest hypersaline lake in the world. Lake Urmia's water
level has dropped drastically from 1277.85 m to 1270.08 m asl (equal to 7.77 m) during the …

Evaluating the sources of nutrient inputs to coastal lagoons is required to understand the
functioning of these ecosystems and their vulnerability to eutrophication. Whereas terrestrial …

Dissolved carbon dioxide (CO2) may be highly enriched in groundwater. However, the
contribution of groundwater discharge as a source of CO2 to rivers, estuaries and coastal …

Radium isotopes and radon are routinely used as tracers to quantify groundwater and
porewater fluxes into coastal and freshwater systems. However, uncertainties associated …