Ground Water Microbiology - About 29% of the earth's surface is represented by continental surface. Beneath all these continental surface is the, groundwater habitat. Thus, groundwater ecosystems include vast area on a global scale.
The typical composition of the continental areas of the earth includes, in vertical sequence, the following: the A and B soil horizons; the C soil horizon from which the above two horizons might have been derived; an unsaturated or vadose zone which is bound between the C soil horizon and the water table; a capillary fringe zone just above the water table and a saturated zone which may extend through several geological strata.





