This describes a very early wet phase when water was stable at the surface followed by a drying out as the Martian climate abruptly changed about four billion years ago.
The combined technique shows more precise identification of the surface elements who changed, in particular the pools and ditches on the East side of the Oasis who went through a drying out process.
Incision by gullies would have resulted in a drying out of wetlands which occurred later and allowed cultivation of many valley bottoms for wheat and fodder crops.
The population dynamics of snail kites are strongly linked with the hydrology of the system due to the dependence of this bird species on one exclusive prey species, the apple snail, which is negatively affected by a drying out of habitat.
Hundreds of trout, eels and other smaller fish are being rescued from a drying out river bed.
On the other hand, a drying out of the membrane has to be avoided to assure adequate ionic conductivity [11].
