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How glacial history, selection and current gene flow affect alpine plants: Population differentiation, local adaptation and demography in a fragmented landscape
Third-party funded project |
Project title |
How glacial history, selection and current gene flow affect alpine plants: Population differentiation, local adaptation and demography in a fragmented landscape |
Principal Investigator(s) |
Stöcklin, Jürg
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Project Members |
Stöcklin, Jürg Frei, Eva Silvia Scheepens, Johannes
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Organisation / Research unit |
Departement Umweltwissenschaften / Population Biology (Stöcklin) |
Project start |
01.08.2007 |
Probable end |
31.07.2010 |
Status |
Completed |
Abstract |
The alpine landscape is characterized by a pronounced spatial heterogeneity of abiotic conditions and displays high temporal dynamics. To persist in space and time, long-lived alpine plants must be adapted to the geographic isolation of habitats, to natural disturbances caused by climatic oscillation and to topography-induced processes. Glacial history together with the pronounced heterogeneity of the alpine landscape is responsible for a high occurrence of endemic taxa in the Alpine flora. Nevertheless, many alpine plants are widespread and occur from east to west over the entire alpine range. Populations of a species may diverge in morphology and performance through natural selection and/or genetic drift. In widespread plants landscape heterogeneity may lead to genetic differentiation and local adaptation. But adaptation is hindered by gene flow from pollen and seeds and may be confounded by drift. Alternatively, the function of plants over a broad range of environmental conditions can be maintained by phenotypic plasticity. Furthermore, landscape level processes at the regional scale such as colonisation and extinction are linked to genetic patterns and population dynamics at the local scale. Typically, widespread species show high levels of genetic variation and adaptation to particular local conditions. Recently, molecular studies demonstrated the impact of glacial history and migration pattern on the genetic signatures of alpine plants, indicating that population-connectivity and gene flow was not strong enough to mask the effect of isolation in different regions. Molecular break zones are common to most of the alpine species studied so far and strikingly similar to biogeographic boundaries based on floristic evidence. However, it is currently not known to what extend glacial history and corresponding molecular pattern in alpine plants are reflected in phenotypic variation and local adaptation at the scale of the European Alps. Here, we study how glacial history, selection and current gene flow affect population differentiation, local adaptation and population dynamics in widespread alpine plants. We propose experiments in the common garden and reciprocal transplantation with plant material from the entire alpine belt in order to separate effects from historic and current processes on genetic and phenotypic characteristics of the plants. By including experiments on current gene flow, colonisation of suitable habitats, and modeling of metapopulation dynamics in a real landscapes this project links processes operating at different time and spatial scales. As a whole, the project addresses the important question of how plant species are able to survive and perform in fragmented landscapes. The different parts of the project are aimed to integrate population dynamics and genetics with landscape ecology. The results on the effects of glacial history, selection and current gene flow on alpine plant species will provide general ecological information on plant responses to climatic and other variability and will thereby contribute to knowledge about the consequences of global change for alpine plant life. |
Financed by |
Swiss National Science Foundation (SNSF)
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Published results () |
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ID |
Autor(en) |
Titel |
ISSN / ISBN |
Erschienen in |
Art der Publikation |
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85179 |
Stöcklin, Jürg; Kuss, Patrick; Pluess, Andrea R. |
Genetic diversity, phenotypic variation and local adaptation in the alpine landscape : case studies with alpine plant species |
0253-1453 ; 1420-9063 |
Botanica Helvetica |
Publication: JournalArticle (Originalarbeit in einer wissenschaftlichen Zeitschrift) |
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462101 |
Scheepens, J. F.; Stöcklin, Jürg; Pluess, Andrea R. |
Unifying selection acts on competitive ability and relative growth rate in Scabiosa columbaria |
1439-1791 ; 1618-0089 |
Basic and Applied Ecology |
Publication: JournalArticle (Originalarbeit in einer wissenschaftlichen Zeitschrift) |
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462107 |
Scheepens, J. F.; Frei, Eva S.; Stöcklin, Jürg |
Genotypic and environmental variation in specific leaf area in a widespread Alpine plant after transplantation to different altitudes |
0029-8549 ; 1432-1939 |
Oecologia |
Publication: JournalArticle (Originalarbeit in einer wissenschaftlichen Zeitschrift) |
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984515 |
Scheepens, J. F.; Kuss, Patrick; Stöcklin, Jürg |
Differentiation in morphology and flowering phenology between two Campanula thyrsoides L. subspecies |
1664-2201 ; 1664-221X |
Alpine Botany |
Publication: JournalArticle (Originalarbeit in einer wissenschaftlichen Zeitschrift) |
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984530 |
Kuss, P.; Armbruster, G. F. J.; Ægisdóttir, H. H.; Scheepens, J. F.; Stöcklin, Jürg |
Spatial genetic structure of Campanula thyrsoides across the European Alps : indications for glaciation-driven allopatric subspeciation. |
1433-8319 ; 1618-0437 |
Perspectives in Plant Ecology, Evolution and Systematics |
Publication: JournalArticle (Originalarbeit in einer wissenschaftlichen Zeitschrift) |
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984539 |
Fischer, Markus; Weyand, Anne; Rudmann-Maurer, Katrin; Stöcklin, Jürg |
Adaptation of Poa alpina to altitude and land use in the Swiss Alps |
1664-2201 ; 1664-221X |
Alpine Botany |
Publication: JournalArticle (Originalarbeit in einer wissenschaftlichen Zeitschrift) |
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984565 |
Frei, Eva S.; Scheepens, J. F.; Stöcklin, Jürg |
Dispersal and microsite limitation of a rare alpine plant |
1385-0237 ; 1573-5052 |
Plant Ecology |
Publication: JournalArticle (Originalarbeit in einer wissenschaftlichen Zeitschrift) |
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984576 |
Frei, Eva S.; Scheepens, J. F.; Armbruster, G. F. J.; Stöcklin, Jürg |
Phenotypic differentiation in a common garden reflects the phylogeography of a widespread Alpine plant |
0022-0477 ; 1365-2745 |
Journal of Ecology |
Publication: JournalArticle (Originalarbeit in einer wissenschaftlichen Zeitschrift) |
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1017784 |
Frei, Eva Silvia |
How glacial history and environmental variation affect population differentiation and gene flow dynamics in Alpine plant species |
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Publication: Thesis (Dissertationen, Habilitationen) |
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1017787 |
Scheepens, Johannes Fredericus |
Phenotypic divergence in widespread plants : genetic drift, selection and plasticity |
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Publication: Thesis (Dissertationen, Habilitationen) |
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1532657 |
Frei, E. S.; Scheepens, J. F.; Stöcklin, J. |
High genetic differentiation in population of the rare alpine plant species Campanula thyrsoides on a small mountain |
1664-2201 ; 1664-221X |
Alpine Botany |
Publication: JournalArticle (Originalarbeit in einer wissenschaftlichen Zeitschrift) |
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