protection of water resources from contamination and detection of the contaminants and their treatments are among the essential issues in the management of water resources. in this work, the time-lapse electrical resistivity tomography (ert) surveys were conducted along 7 longitudinal lines in the downstream of the latian dam in jajrood (iran), in order to detect the contamination resulting fro...

This article deals with the quantification of saltwater upconing below horizontal wells in freshwater lenses using analytical solutions as a computationally fast alternative to numerical simulations. Comparisons between analytical calculations and numerical simulations are presented regarding three aspects: (1) cyclic pumping; (2) dispersion; and (3) finite horizontal wells in a finite domain (...

Adult hawksbill turtles (Eretmochelys imbricata) are typically described as open-coast, coral reef and hard substrate dwellers. Here, we report new satellite tracking data on female hawksbills from several countries in the eastern Pacific that revealed previously undocumented behaviour for adults of the species. In contrast to patterns of habitat use exhibited by their Caribbean and Indo-Pacifi...

The immature stages of freshwater insects can sometimes be found in densities of up to 25,000 m -2 in saltwaterinundated regions of estuaries, however little is known of their condition there. The gut fullness and contents of larvae of two species of hydropsychid caddisfly (Hydropsyche siltalai and H. instabilis) from freshwater and saltwater-inundated sites on the Aber Estuary, Wales were comp...

abstractthe purpose of this study was to compare the heavy metal uptake of cd in liver tissue of endemic fish aphanius sophiae in the saltwater eshtehard of karaj and fresh water in laboratory conditions, the relationship between cadmium accumulation in the liver, the effect of salinity and different concentrations of cd uptake. sampling did randomly from salt river in the spring and summer 201...

Two experiments were conducted to determine the effects of a mild or severe stressor on the saltwater preference of juvenile spring chinook salmon (Oncorhynchus tshawytscha). To observe the response of fish to an overhead threat, we presented stressed fish with an avian predator model in the second experiment. Experiments were conducted in 757-L tanks containing a stable vertical salinity gradi...