Visualization of the four population density classes of common ragweed mapped in the road network survey. Note that the minimum length for a change in recorded plant density during the mapping was different for ‘scattered populations’ (200 m) compared to the other three density classes (100 m). Dominant populations differed from line-like populations in their lateral expansion perpendicular to the roadway.

  Part of: Lemke A, Buchholz S, Kowarik I, Starfinger U, von der Lippe M (2021) Interaction of traffic intensity and habitat features shape invasion dynamics of an invasive alien species (Ambrosia artemisiifolia) in a regional road network. NeoBiota 64: 55-175.