Table 2.

Bootstrapped differences of genetic metrics through time within regions. Lower 95% confidence intervals not encompassing zero were considered significant differences between time periods.

region	allelic richness (AR)		observed heterozygosity (HO)		expected heterozygosity (HE)
	mean difference	lower 95% CI	mean difference	lower 95% CI	mean difference	lower 95% CI
EC 2004 to 2009–2010	0.05	−0.32	0.05	0.01	0.02	0.00
EC 2004 to 2011–2012	0.12	−0.25	0.07	0.03	0.03	0.01
EC 2009–2010 to 2011–2012	0.06	−0.25	0.02	−0.01	0.01	−0.01
SE 2004 to 2009–2010	0.25	−0.23	0.06	0.00	0.06	0.03
SE 2004 to 2011–2012	0.24	−0.16	0.06	0.00	0.06	0.02
SE 2009–2010 to 2011–2012	−0.01	−0.39	0.00	−0.04	−0.01	−0.03
SW 2004 to 2009–2010	0.19	−0.31	0.01	−0.06	0.00	−0.04
SW 2004 to 2011–2012	0.20	−0.27	0.00	−0.09	−0.01	−0.05
SW 2009–2010 to 2011–2012	0.01	−0.47	−0.02	−0.10	−0.01	−0.05
core (GNP) 2004 to 2009–2010	0.05	−0.19	0.01	−0.02	0.00	−0.01
core (GNP) 2004 to 2011–2012	0.15	−0.13	0.01	−0.02	0.00	−0.01
core (GNP) 2009–2010 to 2011–2012	0.10	−0.18	0.00	−0.04	0.00	−0.02