Table 1: Means (±SE; 𝑛 = 9 ) of germinable seeds of Senecio aquaticus, forbs, and grasses m−2 in the soil at three grasslands with established populations of S. aquaticus located in the centre of the geographical distribution of the species in Switzerland.

SiteS. aquaticusForbsGrasses

Soil depth0–10 cm20–30 cm0–10 cm0–10 cm
Kriens I361 (±115.0)012486 (±2242.7)46639 (±5746.6)
Kriens II 1875 (±387.0)42 (±41.7)2597 (±441.3)29653 (±4287.6)
Rothenthurm 1181 (±257.8)05056 (±951.1)15972 (±5048.5)

𝑛 = 3 for soil depth 20–30 cm.