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Fig. 4 | BMC Ecology and Evolution

Fig. 4

From: Conifers and non-native tree species shift trophic niches of generalist arthropod predators in Central European beech forests

Fig. 4

Relationships between Douglas fir proportion (APA) and a isotopic richness (IRic) and b isotopic divergence (IDiv) of ground beetles; c tree neighborhood diversity (NDiv) and ground beetle mean ∆15N; canopy openness and d ground beetle mean ∆15N values, e isotopic richness (IRic) of spiders and f standard ellipse area (SEAc) of spiders. Grey bands represent 95% confidence intervals. Significant relationships with solid lines, non-significant regressions dashed. Values and regression line from the northern plots in blue and southern plots in red

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