The impact of human pressure on landscape patterns and plant species richness in Mediterranean coastal dunes

摘要: We analyze the spatial patterns of natural dune cover patches and their plant richness, comparing coastal sites with different levels human pressure in central Italy. created a detailed land map sites. The pattern types was characterized by computing set patch-based metrics. To quantify patch we used 16 m2 vegetation plots, randomly distributed on types. For each patch, richness entire pool species three guilds (i.e., typical dune, ruderal, alien species) considered. compared dunes focusing metrics floristic information using nonparametric Kruskal–Wallis test. In high pressure, have observed general simplification decline but specific response for type. Alien ruderal presented low all patches. ...