The Gelderse Poort region revealed an impressive diversity of lichens in 2022, with 5,605 observations covering 214 species, representing roughly 25% of all Dutch lichens. This includes seven species classified as nationally very rare, 26 as rare, and 36 as uncommon. Noteworthy discoveries included species such as the Lipschaduwmos and Purper geweimos. Lichens thrive in various substrates like bark, stone, and even artificial surfaces, underscoring the area's ecological value. Their presence reflects the dynamic interplay of light, moisture, and minimal disturbance within the Gelderse Poort​