Table 2. Variation of seasonal (wet-dry) and inter-annual (2013–2014) dissimilarity for species occurrence (Sørensen) and abundances (Bray–Curtis) in relation to aridity and its interaction with year and season.

		Sørensen		Bray–Curtiss
Effect	Coefficient ± S.E.	F (1, 17)	Coefficient ± S.E.	F (1, 17)
Seasonal
Aridity	−1.974 ± 0.406	23.63**	−3.473 ± 0.458	57.58**
Year*Aridity	0.019 ± 0.032	0.33	0.064 ± 0.036	3.14
Inter-annual
Aridity	0.184 ± 0.529	0.12	1.468 ± 0.424	12.00*
Season*Aridity	0.008 ± 0.042	0.04	0.109 ± 0.034	10.49*

Notes:

Sørensen dissimilarity for inter-annual comparison and Bray–Curtis dissimilarity for both seasonal and inter-annual comparisons were arcsine transformed. Statistical significance levels after Bonferroni correction:

^*p < 0.0025;

^**p < 0.00025.