How does vegetation diversity change as the glacier recedes?

How do environmental conditions change as the glacier recedes?
Experimental Design
Site 1
Site 2
Site 3
Site coverage

Temperature change
Microclimates within Sites
Average Temperature Difference
Plants are influencing the environment. 
The greatest air temperature difference occurs closest to the glacier.
The greatest soil temperature difference occurs further from the glacier.
Species Diversity- Number of Species
Data does not support hypothesis that species diversity would increase as we moved away from glacier?

Data does support hypothesis that envionmental conditions (soil and air temperature) would change as we moved away from glacier.

Data suggest that plants affect environment to create microclimates.
Conclusions:
Environmental Conditions
Sites & Species Diversity

Questions:
Plants & Microenvironments