Give the names of some invasive species in India

What is the significance of the slope of regression in a species area relationship?

Slope of regression represents the changes in the species richness with the area. Species richness decreases with the decrease in area. The value of Z’ (regression coefficient) lies in between 0.1-0.2, regardless of the taxonomic groups in the region.
For very larger areas like continents, the-slope of the line becomes much steep with the Z values in the range of 0.6-1 .