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Inter-specific competitive stress does not affect the magnitude of inbreeding depression

Inter-specific competitive stress does not affect the magnitude of inbreeding depression

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Prüfsumme: MD5:dc4d087fa770b0917c08167ac4a5ae51

WILLI, Yvonne, Stefan DIETRICH, Mark VAN KLEUNEN, Markus FISCHER, 2007. Inter-specific competitive stress does not affect the magnitude of inbreeding depression. In: Evolutionary Ecology Research. 9, pp. 959-974. ISSN 1522-0613. eISSN 1937-3791

@article{Willi2007Inter-13507, title={Inter-specific competitive stress does not affect the magnitude of inbreeding depression}, year={2007}, volume={9}, issn={1522-0613}, journal={Evolutionary Ecology Research}, pages={959--974}, author={Willi, Yvonne and Dietrich, Stefan and van Kleunen, Mark and Fischer, Markus} }

Fischer, Markus 2007 Willi, Yvonne First publ. in: Evolutionary Ecology Research 9 (2007), pp. 959–974 2011-06-16T14:11:39Z Willi, Yvonne Hypothesis: Stressful inter-specific competition enhances inbreeding depression.<br />Organisms: Creeping spearwort (Ranunculus reptans L.) and its common competitor, the<br />creeping bentgrass (Agrostis stolonifera L.).<br />Field site: Outdoor common garden experiment at the University of Potsdam.<br />Methods: We collected plants of 12 natural populations of R. reptans differing in mean parental inbreeding coefficient (0.01–0.26). We performed within-population crosses for two<br />generations and kept the offspring in a common environment. In the second generation, we raised plants in the presence or absence of the grass competitor A. stolonifera. After 2 months,<br />we assessed survival and growth of two replicate plants per seed family and treatment. To compare our results with those of previous investigations, we compiled a list of studies on<br />inbreeding and competition.<br />Conclusions: Both population mean inbreeding and inter-specific competition led to a significant reduction in plant performance (survival and growth) and were therefore sources of stress. However, inbreeding and competition did not interact in their effects on plant<br />performance or developmental instability (estimated by within-family coefficient of variation in performance). Inter-specific competition did not enhance inbreeding depression, which is in line<br />with the results of most previous studies. eng Inter-specific competitive stress does not affect the magnitude of inbreeding depression Fischer, Markus deposit-license 2011-06-16T14:11:39Z van Kleunen, Mark Dietrich, Stefan Dietrich, Stefan van Kleunen, Mark

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