Erratum to: Do protected areas in urban and rural landscapes differ in species diversity?

To compare species spatial turnover in urban and rural protected areas, we calculated turnover from presence-absence tables for each pair of protected areas (i) within the city of Halle, i.e. urban protected areas, (ii) within the district of Saalkreis that surrounds Halle, i.e. rural protected areas, and (iii) for each pair of urban and rural protected areas. We stated that we used the bsim similarity index as given in Lennon et al. (2001) and Koleff et al. (2003)