Spatial distribution of Ixodes ricinus in forest habitats: a comparative study of the northern and southern slopes of Mount Slavnik, Slovenia

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Table 2

Chosen generalised additive models (GAM) with a negative binomial family for adults and nymphs showing the interaction effect between side of the slope, elevation, temperature and relative humidity in terms of number of collected adult Ixodes ricinus. Significant p values (p < 0.05) in bold. *** p < 0.001, ** p < 0.01, * p < 0.05, NS non-significant.

	Parametric coefficients	Estimate	Std. error	z-Value	p
Adults
	Intercept	0.822	0.278	2.960	0.003	**
	Side of slope – South	−0.774	0.3477	−2.226	0.026	*
	Approx. significance of smooth terms	edf	Ref. df	χ ²	p
	Elevation	3.648	4.308	16.930	0.002	**
	Temperature × Side of slope − North	2.332	2.705	7.805	0.034	*
	Temperature × Side of slope − South	2.452	2.796	6.273	0.128	NS
Nymphs
	Intercept	2.381	0.332	7.177	<0.001	***
	Side of slope – South	−0.628	0.436	−1.442	0.149	NS
	Approx. significance of smooth terms	edf	Ref. df	χ ²	p
	Elevation × Side of slope − North	1.000	1.000	0.213	0.644	NS
	Elevation × Side of slope − South	1.934	1.994	13.658	<0.001	***
	Temperature × Side of slope − North	1.000	1.001	0.002	0.971	NS
	Temperature × Side of slope − South	2.167	2.714	11.558	0.007	**

Adults: R² (adj) = 0.61, Deviance explained = 59.2%, REML = 97.938, Scale est. = 1, n = 50; Nymphs: R² (adj) = − 0.351, Deviance explained = 35.7%, REML = 159.14, Scale est. = 1, n = 50.

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