Element content of epiphytic Hypnum cupressiforme related to element content of the bark of different species of phorophytes
1978; Oikos Editorial Office; Volume: 4; Linguagem: Inglês
ISSN
0105-0761
Autores Tópico(s)Botany and Plant Ecology Studies
ResumoSamples of epiphytic Hypnum cupressiforme Hedw. from the trunks of Tilia cordata, Alnus glutinosa, Fagus silv?tica, Fraxinus excelsior, Quercus robur and Betula pubescens, and samples of the bark of the respective phorophytes, were analysed for Ca, Cd, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, Pb, V and Zn by atomic absorption spectrophotome try. * The highest levels of elements were found in bark and epiphytic moss of trees with a bark with high values of conductivity, pH and buffer capacity. No simple relation was found between the element content of the bark and the epiphytic moss, although in a few cases extreme values in the bark both high and low were reflected in the moss also. It is pointed out that epiphytic mosses are applicable only as monitoring organisms for the atmospheric deposition of elements, when the methodical variations can be eleminated by steeper environmental gradients or temporal variations. Pe3K>Me. npo6w 3nH(J)HTHHecKHx Hypnum cupressiforme Hedw. H3 ctbojiob Tilia cordata, Alnus glutinosa, Fagus silv?tica, Fraxinus excelsior, Quercus robur h Betula pubescens, h npo6bi Kopbi cooTBeTCTBeHHbix 4)opo(J)HTOB, 6biJiH aHajiH3H pOBaHbi othocht. Ca, Cd, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, Pb, V h Zn nvT?M aTOMHOH a6C0p6lTH0HH0H CneKTpO(j)OTOMeTpHH. CaMbie BbicoKHe ypoBHH 3JieMeHTOB ?mjih HanfleHbi b Kope h ann^HTHHecKOM Mxe AepeBbeB, HMeioiirHx Kopy c bwcokhmh noica3aTeji5iMH npoBOflHMOCTH, pH h 6y(J)epHO? cnoco?HOCTH. He HaniJiH HHicaKHx hbhmx CB?ne? MOK^y C0Aep?caHHeM 3JieMeHTOB b Kope h 3nH(j)HTHHecKOM Mxe, OAHaKO b oTflejibHbix cnynaflx npe/jejibHbie noica3aTejiH b Kope KaK BbicoKHe, TaK h HH3KHe ?mjih TaK^ce oTpaaceHbi bo Mxe. YKa3biBaeTCH, HTO SnH^HTH^ieCKHe MXH npHMeHHMbl JIHHIb KaK KOHTpOJIbHbie opraHH3Mbi aj?? aTMOC(J)epHbix oca^KOB 3jieMeHTOB, Kor^a CHCTeMaTHHecKHe H3MeHeHHJi moncho ycTpaHHTb nyT?M ?ojiee KpyTbix rpa^HeHTOB OKpysKeHHH hjih BpeMeHHbix H3MeHemiH.
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