Genetic diversity, phenotypic variation and local adaptation in the alpine landscape: case studies with alpine plant species
Abstract Plant survival in alpine landscapes is constantly challenged by the harsh and often unpredictable environ-mental conditions. Steep environmental gradients and patchy distribution of habitats lead to small size and spatial isolation of populations and restrict gene flow. Agricultural land us...
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| Format: | Text |
| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.455.8025 http://www.botany.unibe.ch/planteco/abstr_repr/BotHelv_119_125.pdf |
| Summary: | Abstract Plant survival in alpine landscapes is constantly challenged by the harsh and often unpredictable environ-mental conditions. Steep environmental gradients and patchy distribution of habitats lead to small size and spatial isolation of populations and restrict gene flow. Agricultural land use has further increased the diversity of habitats below and above the treeline. We studied the consequences of the highly structured alpine landscape for evolutionary processes in four study plants: Epilobium fleischeri, Geum reptans, Campanula thyrsoides and Poa alpina. The main questions were: (1) How is genetic diversity distributed within and among populations and is it affected by altitude, population size or land use? (2) Do reproductive traits such as allocation to sexual or vegetative reproduction vary with altitude or land use? Furthermore, we studied if seed |
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