Problems Related to Lichen Transplants to Monitor Trace Element Deposition in Repeated Surveys: A Case Study from Central Italy

摘要: The results of a transplant experiment with the fruticose lichen Evernia prunastri aimed at monitoring trends trace elements deposition in repeated biomonitoring study are reported. Data comparability between two surveys and interpretation were addressed this study. ratio concentration each element after exposure control samples prior to (exposed-to-control ratio, EC ratio), as well an appropriate interpretative scale, adopted means determining temporal accumulation by transplants. showed that method is indeed reliable tool, pinpointing Zn smelting plant oil refinery principal pollution sources area, which indicate associated former similarly accumulated both 2002 2003, while latter tended decrease 2003.