Climax Forest - Xerarch
First, some xerophytic species of trees, establish in this area. They are sparsely distributed and are stunted because the conditions are still not very congenial for them. With passage of time, the rocks are further weathered and a deep layer of soil is formed. This favours vigorous growth of a much larger number of trees.
The moisture in the soil is conserved because of the shading of soil. The climax forest is thus developed. The vegetation becomes more and more mesophytic with the accumulation of humus. Thus, in the xerosere, as in the hydrosere the habitat has changed from one extreme condition to a medium situation which permits the development of a mesophytic type of vegetation.