Trace metal contents in Parmelia caperata (L.) Ach. compared to bulk deposition, throughfall and leaf-wash fluxes in two holm oak forests in Montseny (NE Spain)

atmosfera atmosphere bosques cadmio cadmium cell walls chrome chromium cinc cobalt cobalto cobre contaminantes copper cromo cuivre extractos vegetales forests heavy metals identification indicator plants lead lichen lichenes measurement mercure mercurio mercury mesure metales pesados nickel oligoelementos pared celular paroi cellulaire plant extracts plantas indicadoras plante indicatrice plomb plomo polluant pollutants precipitation quercus quercus ilex trace elements vanadio vanadium zinc