Takala K, Olkkonen H, Krouse H R
Ecological Laboratory, Department of Environmental Sciences, Kuopio, P.O. Box 6, SF-70211 Kuopio, Finland.
Environ Pollut. 1991;69(4):337-48. doi: 10.1016/0269-7491(91)90121-c.
The sulphur isotope composition of the epiphytic lichens, Hypogymnia physodes (L.) Nyl and Pseudevernia furfuracea (L.) Zopf, of the terricolous lichens, Cladina sp. and Peltigera aphthosa (L.) Willd., and of pine bark, at 31 sites in Finland, appeared to be dependent on lichen and tree species. The negative correlation of sulphur isotope composition with sulphur content was highly significant (P<0.001) in H. physodes and significant (P<0.01) in Pseudevernia furfuracea and Peltigera aphthosa. No correlation between the sulphur isotope composition and sulphur content was found for Cladina sp. and pine bark. The sulphur isotope compositions displayed statistically significant regional variation from south to north. Microenvironmental factors were considered, including phorophyte species and the chemical form of sulphur.
在芬兰31个地点，树生地衣（Cladina属和地卷衣（Peltigera aphthosa (L.) Willd.））、附生地衣（长松萝（Hypogymnia physodes (L.) Nyl）和粉石蕊（Pseudevernia furfuracea (L.) Zopf））以及松树皮的硫同位素组成似乎取决于地衣和树种。硫同位素组成与硫含量之间的负相关在长松萝中高度显著（P<0.001），在粉石蕊和地卷衣中显著（P<0.01）。未发现Cladina属和松树皮的硫同位素组成与硫含量之间存在相关性。硫同位素组成从南到北呈现出统计学上显著的区域变化。研究考虑了微环境因素，包括宿主树种和硫的化学形态。
