@article {1570, title = {Nitrogen content, 15N natural abundance and biomass of the two pleurocarpous mosses Pleurozium schreberi (Brid.) Mitt.and Scleropodium purum (Hedw.) Limpr. in relation to atmospheric nitrogen deposition.}, journal = {Environmental Pollution}, volume = {134}, year = {2005}, pages = {465-473}, author = {Solga, A. and Burkhardt, J. and Zechmeister, H.G. and Frahm, J.P.} }