Habitat connectivity shapes urban arthropod communities: the key role of green roofs

Urban Farm DB summary

By sampling carabid beetles, spiders, weevils and bees on green roofs and ground-level green spaces in Zurich, this study compares community composition and tests the relative importance of local environment, microclimate and connectivity. Connectivity among roofs and to ground habitats emerged as a key driver of species composition, demonstrating that green roofs can act as stepping stones that support biodiversity in the surrounding urban ecosystem — a landmark case for connectivity-aware green-roof placement in city design.