Origin and abundance of beach debris in the Balearic Islands

摘要: The abundance, nature and possible sources of litter on 32 beaches the Balearic Islands (Mediterranean Sea) were investigated in 2005. Mean summer abundances Balearics reached approximately 36 items m -1 , with a corresponding weight 32±25 g which is comparable to results other studies Mediterranean. Multivariate analyses (principal component analysis redundancy analysis) confirmed strong similarities between islands statistically significant seasonal evolution composition abundance. In (the high tourist season), debris contamination expressed as item abundance was double that low season showed heterogeneous associated beach use. Cigarette butts most abundant item, accounting for up 46% objects observed season. contrast, plastics related personal hygiene/medical predominant wintertime (67%) natural wood important by (75%). both seasons, characteristics suggested relationship local land-based origins. While users main source debris, primarily attributed drainage outfall systems.