A field quantification of coastal dune perennial plants as indicators of surface stability, erosion or deposition

摘要: Dune plants both modify the wind field around them and are impacted by various stress factors, among sand erosion deposition. As coastal dunes being either stabilized or remobilized, in response to changes rates of dune movement, vegetation cover composition expected vary reflecting differences sedimentary conditions. In this study 315 quadrats 100 m2, which perennial plant species were sampled, analysed with respect annual deposition that measured using pins. A visual exploratory data analysis was introduced, based on selective filtering samples according their cover. This method, combined established statistical tools, enabled authors uncover inclination indicative power nine a mobile environment, establish whether they more prevalent places undergoing burial. Two found be clear indicators Stipagrostis lanata, Retama raetam. Of indicating only one may stated as indicator erosion: Silene succulenta, Cyperus macrorrhizus coming close an less erosive environment. The best for burial be, expected, Ammophila arenaria, Artemisia monosperma also high mobility especially when its relative is higher than 80%. Such information can used monitor natural processes stabilization reactivation, assess success management plan aims at stabilizing dune, remobilizing it removing vegetation.