Parmelia sulcata lichen transplants positioning towards wind direction (Part II): element concentrations and relationships with atmospheric element deposition
Parmelia sulcata transplants were positioned in three different exposure systems allowing three different influxes: free influx (Fi), horizontal influx (Hi) and vertical influx (Vi). Results suggest the absence of any wind-directional effects on element accumulation within Fi and Hi systems, but underline that differences in response may be observed in relation with the transplant set-up systems. The Vi system generally shows poor results, while the performance of the Hi and Fi systems depends on the element involved. Results were obtained for a specific lichen, and therefore are not necessarily representative for other lichens.
KeywordsLichen transplants Trace elements Wind influxes Transplant hanging systems
The authors would like to thank Dr. M. Reis, O. R. Oliveira and P.·C. Chaves for assistance in PIXE analysis, and Dr. O. M. Steinebach for ICP-OES analysis.
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