Nested patterns in urban butterfly species assemblages: respective roles of plot management, park layout and landscape features

摘要: Increasing numbers of cities are currently developing sustainable policies aimed at promoting urban biodiversity and ecological dynamics through the planning green networks implementation more management practices. These human activities can strongly influence environmental factors on which organization communities different scales depends. Thus, it is fundamental importance to understand relative impact local management, space design landscape features distribution abundance species in areas. On basis 2 years butterfly surveys public parks within an extensive Mediterranean metropolitan area, Marseille (South-East France), aim this paper provide a better understanding effect these three (plot, park, landscape) composition assemblages. Using variation partitioning nestedness analysis data aggregated plot-level park-level respectively, we demonstrate preponderant scale Our results also highlight important co-variation plot park layout features, their interaction with community structure butterflies. Although there no significant species-area relationship, significantly nested patterns arise composition. Selective colonization appears as driving force constraining constitution assemblages city. However, prospective study adjacent natural areas suggests that biotic limitations, interspecific competition habitat filtering may play role if larger portion urbanization gradient explored, remains be investigated.