Then again, perhaps those fresh water springs will continue to keep at least a few centimeters of life-bearing water, in which I'm sure millions of bacteria, archaea and fungi will happily reside.
Is it conceivable that it will dry totally, or will the hydroscopic properties of the salts prevent this?
Oops forgot to reply! I'm confident that it can and probably will dry up totally. I think you mean hygroscopic, but that wouldn't prevent a drying up - numerous salty, trapped lakes have already vanished this way. I'm no expert though!