Some neobiota are unobtrusive. These species are part of flora and fauna without causing damage, like the freshwater jellyfish Craspedacusta sowerbyii, the mandarin duck (Aix galericulata) or the potato (Solanum tuberosum).
But other neobiota are able to spread really wide and fast, endanger native species, transport new deseases, can change whole ecosystems or cause economic damage. These species are called invasive neobiota. Most of them were introduced more or less recently during industrialization or globalization to new regions, river catchment areas or continents. This process of transportation as well as the establishment of invasive species is called biological invasion.
Examples of invasive species in Germany and the Czech Republic are