Abstract

Abstract Bryoria section Implexae is a chemically and morphologically diverse group characterized by pendent growth form and non-spinulose branches. In this study, we examine the chemical diversity, distribution pattern and habitat preferences of European members of section Implexae in Finland. A total of 1253 specimens were collected from four vegetation zones and analysed with thin layer chromatography for secondary chemistry. Secondary chemistry of the specimens and vegetation zones had a significant interaction term in a generalized linear model (GLM) of sample frequencies, indicating that chemotype frequencies differed among vegetation zones. Forest structure interacted with vegetation zones and chemotypes indicating that chemotypes differed among forest structure classes, but also showing that forest structure classes differed among vegetation zones. The overall abundance of Bryoria spp. was significantly different among vegetation zones, increasing substantially from south to north. The abundance w...

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