T. Rockenbach’s scientific contributions

... Jacobaea vulgaris is a common native pioneer plant and can be found from Scandinavia to the Mediterranean, but is most abundant northwestern Europe. Senecio inaequidens on the other hand is considered to be an invasive species in Europe (Ernst 1998, Heger and B ö hmer 2005, Schmitz and Werner 2001 which originates from South Africa, and was accidentally introduced in Europe by sheep wool transports (Werner et al. 1991). It was recorded in 1939 for the fi rst time in the Netherlands and its range expanded mainly during the 1970s (Tamis et al. 2005). ...

Reference:

The differential impact of a native and a non‐native ragwort species (Senecioneae) on the first and second trophic level of the rhizosphere food web