Figure 4.2.2 – Habitat suitability (from null in red to very good in dark green) with (right panel) or without (left panel) noise considerations for the midwife toad (Alytes obstetricans) (upper line) and the common quail (Coturnix coturnix) in the development of the Line 18 of the Grand-Paris Express. While a large amount of space is expected to be suitable for both species when noise pollution is not included in the analysis (green), the integration of noise pollution shows that this suitability is strongly overestimated across the landscape (Source: Moulherat et al., 2023).