Broad and flexible stable isotope niches in invasive non-native Rattus spp. in anthropogenic and natural habitats of central eastern Madagascar

Table 4 Results of multivariate Bayesian mixed models on niche differentiation between R. rattus and R. norvegicus

Parameter	Posterior mean	l-95% CI	u-95% CI	P
Intercept δ¹³C	−21.70	−22.68	−20.72	<0.001
Intercept δ¹⁵N	7.99	6.77	9.27	<0.001
Species^a	−1.03	−1.56	−0.45	<0.001
Anthropogenic steppe^b	0.25	−0.06	0.55	0.116
Agricultural field^b	0.29	−0.05	0.66	0.126

Shown are posterior means, lower and upper 95% credibility intervals, and P values, which are based on 10,000 simulations
Significant results are marked in italic
Reference levels are ^a R. norvegicus and ^b natural forest

ISSN: 1472-6785