Land use causes genetic differentiation of life-history traits in Bromus hordeaceus

Völler, Eva; Auge, Harald; Bossdorf, Oliver; Prati, Daniel (2013). Land use causes genetic differentiation of life-history traits in Bromus hordeaceus. Global Change Biology, 19(3), pp. 892-899. Oxford: Blackwell Science 10.1111/gcb.12087

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There is increasing evidence that species can evolve rapidly in response to environmental change. However, although land use is one of the key drivers of current environmental change, studies of its evolutionary consequences are still fairly scarce, in particular studies that examine land-use effects across large numbers of populations, and discriminate between different aspects of land use. Here, we investigated genetic differentiation in relation to land use in the annual grass Bromus hordeaceus. A common garden study with offspring from 51 populations from three regions and a broad range of land-use types and intensities showed that there was indeed systematic population differentiation of ecologically important plant traits in relation to land use, in particular due to increasing mowing and grazing intensities. We also found strong land-use-related genetic differentiation in plant phenology, where the onset of flowering consistently shifted away from the typical time of management. In addition, increased grazing intensity significantly increased the genetic variability within populations. Our study suggests that land use can cause considerable genetic differentiation among plant populations, and that the timing of land use may select for phenological escape strategies, particularly in monocarpic plant species.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS) > Plant Ecology
08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS)

UniBE Contributor:

Bossdorf, Oliver and Prati, Daniel

Subjects:

500 Science > 580 Plants (Botany)

ISSN:

1354-1013

Publisher:

Blackwell Science

Language:

English

Submitter:

Peter Alfred von Ballmoos-Haas

Date Deposited:

14 Feb 2014 16:05

Last Modified:

08 Dec 2015 14:54

Publisher DOI:

10.1111/gcb.12087

Uncontrolled Keywords:

Fertilization, genetic differentiation, grazing, land use, microevolution, mowing, phenology

BORIS DOI:

10.7892/boris.38684

URI:

https://boris.unibe.ch/id/eprint/38684

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