Connectivity of public urban grasslands: implications for grassland conservation and restoration in cities.

摘要: An important limitation of studies on the ecological value urban habitats is question habitat connectivity. While connectivity allows spread and genetic exchange species, isolation can lead to extinction populations through inbreeding loss diversity. However, while practitioners already start improving patches by means restoration, issues have not been taken in account although being crucial for a self-sustaining network. In our study, we evaluate public grasslands such as lawns, residential areas, playgrounds or parks city Munster, Germany. Employing graph theory approach, which uses map (graph) calculate functional measures using patch area size connectivity, studied four groups different plant dispersal distances (2 m, 20 44 m 100 m). This approach be recommended planning due output indicator values comparably low data demands. Our results show first time, that extremely species short-distance but slightly increases long-distance dispersal. Except two larger conglomerations well-connected patches, were found mostly sparsely connected. Thus, future research should focus options improve prioritize improvement. The turned out useful tool analyse also illustrate obtained.