How Species Traits and Affinity to Urban Land Use Control Plant Species Frequency
Urbanized areas are richer in plant species than their rural surroundings (e.g. Walters 1970; Haeupler 1975; Hope et al. 2003; Kühn et al. 2004a; Wania et al. 2006), due to various reasons listed in the General Introduction of this book, such as geological and structural heterogeneity, introduction of species or high temperatures. However, urbanization especially can cause the extinction of rare native species by altering or destroying natural and semi-natural habitats. The high urban species richness is based on both alien and common native species (Kühn et al. 2004a) and a few species rich lineages (see Chapter V), at least in Germany. We consequently need strategies for nature conservation in urban areas that sustain a high species diversity including rare and endangered species (Schwartz et al. 2006). We then need to know why species are rare and how urban land use influences rarity.
KeywordsUrban Land Canopy Height Species Frequency Species Trait Actual Occurrence
Unable to display preview. Download preview PDF.