Ecological disparity is more susceptible to environmental changes than familial taxonomic richness during the Cretaceous in the Alpstein region (northeastern Switzerland)

Swiss Journal of Palaeontology

Table 4 Results of statistical tests

	Spearman’s ρ			Kendall’s τ			Coefficient of variation
	ρ	p	Results	τ	p	Results	Taxonomic richness	Ecological disparity
Original data (including Palaeoecology 5: Hornwald)	0.1054	1	ns	0.1826	1	ns	0.14	0.23
Rarefied data (including Palaeoecology 5: Hornwald)	0.4	0.75	ns	0.3333	0.75	ns	0.12	0.25
Original data (including Palaeoecology 6: Säntis)	0.6325	0.5	ns	0.5477	0.5	ns	0.20	0.29
Rarefied data (including Palaeoecology 6: Säntis)	− 0.2	0.9167	ns	0	1	ns	0.12	0.30

Both rarefied and original data are separately tested. Null hypothesis for the Speaman’s and Kendall’s rank correlation coefficients is that there is a significant difference between the two arguments (taxonomic richness and ecological disparity). ρ and τ = correlation coefficient. p = probability
ns not significant