Pairwise statistical tests for comparison of ecological niche overlap, niche equivalency, and niche similarity between different sets of populations of well-defined and dwarf morphotypes.

In each case, the hypotheses tested were whether the niches are more equivalent/similar than expected by chance. Statistical significance is represented by p-values, and marked with an asterisk (*) when significant (p<0.05). rt1 = rand.type1, both ranges were allowed to shift; rt2 = rand.type2, the dwarf morphotype range was fixed, and only the range of the well-developed morphotype was allowed to shift (see Materials and methods for details).