Global change and the genetic structure of grassland species (2001-2004)

Summary

Global change is expected to affect micro-evolutionary processes. Here, we took advantage of a long-term CO2 enrichment experiment in the field. Using molecular markers and quantitative genetics we analysed the population genetic consequences of enhanced atmospheric CO2 in several grassland species with different life cycles after six years of CO2 enrichment. Using RAPD-PCR and quantitative genetics we explored population differentiation in Scabiosa columbaria, a species probably suffering from isolation of its populations in remnants of calcareous grasslands.

Collaborators

Silvia Wieneke, Dr. Harald Auge, Dr. Roland Brandl

Selected publications

Stöcklin J, Winkler E (2004) Optimum reproduction and dispersal strategies of a clonal plant in a metapopulation: a simulation study with Hieracium pilosella. Evolutionary Ecology 18: 563-584.

Wieneke S, Prati D, Brandl R, Stöcklin J, Auge H (2004) Genetic variation in Sanguisorba minor after 6 years in situ selection under elevated CO2. Global Change Biology 10: 1389-1401.

Thürig B, Körner C, Stöcklin J (2003) Seed production and seed quality in a calcareous grassland in elevated CO2. Global Change Biology 9: 873-884

 

Lavigne, C., Mignot, A., Stöcklin, J (1999) Genetic variation in the response of pollen germination to nutrient availability and elevated CO2 concentrations in Epilobium angustifolium. International Journal of Plant Science 160:109-115

Scabiosa columbaria
Epilobium angustifolium