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A total of 130 red-listed species are found primarily in urban habitats. This corresponds to 9% of all red-listed species in the country, and 6% of all the well-known species of urban habitats. The share of red-listed urban species is expected to grow slightly by 2010.

Compared with other habitats,the proportion of red-listed species among all urban species is quite low. Areas used for transport infrastructure and ruderal habitats constitute a hotspot of endangered urban biodiversity. These have become important supplementary habitats for several species that have disappeared from their original biotopes