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@article{1067793,
author = {Wagner, Viktoria and Treiber, Jan and Danihelka, Jiří and Ruprecht, Eszter and Wesche, Karsten and Hensen, Isabell},
article_location = {Chicago},
article_number = {7},
doi = {http://dx.doi.org/10.1086/666663},
keywords = {abundant-center model; AFLP; fragmentation; geographic distribution range; range center},
language = {eng},
issn = {1058-5893},
journal = {International Journal of Plant Sciences},
title = {Declining genetic diversity and increasing genetic isolation toward the range periphery of Stipa pennata, a Eurasian Feather Grass},
url = {http://www.jstor.org/stable/10.1086/666663},
volume = {173},
year = {2012}
}
TY - JOUR
ID - 1067793
AU - Wagner, Viktoria - Treiber, Jan - Danihelka, Jiří - Ruprecht, Eszter - Wesche, Karsten - Hensen, Isabell
PY - 2012
TI - Declining genetic diversity and increasing genetic isolation toward the range periphery of Stipa pennata, a Eurasian Feather Grass
JF - International Journal of Plant Sciences
VL - 173
IS - 7
SP - 802-811
EP - 802-811
PB - University of Chicago Press
SN - 10585893
KW - abundant-center model
KW - AFLP
KW - fragmentation
KW - geographic distribution range
KW - range center
UR - http://www.jstor.org/stable/10.1086/666663
L2 - http://www.jstor.org/stable/10.1086/666663
N2 - A common assumption in ecology and evolutionary biology is that genetic diversity declines and differentiation increases toward the edge of a species’ geographic range, where populations tend to be smaller and more isolated. We tested these predictions in a characteristic Eurasian steppe plant, Stipa pennata, by inspecting 230 AFLP bands in 26 populations (345 individuals) along a 3300-km longitudinal gradient from the range core, in Russia, to the range periphery, in central Europe. Overall, our study species showed low genetic diversity within populations (mean proportion of polymorphic) and moderately high genetic differentiation among them (mean). As predicted, genetic diversity declined significantly from the range core to the periphery but was not correlated with population size. Pairwise genetic differentiation was significantly higher among peripheral populations than central populations but did not show a pronounced relationship with geographic distance. Our results indicate that peripheral populations may experience higher genetic drift and lower gene flow than their central counterparts, possibly because of smaller population sizes, spatial isolation, and a more complex landscape structure. In addition, historic range fluctuations and the mixed breeding system could have enhanced the observed patterns in our study species.
ER -
WAGNER, Viktoria, Jan TREIBER, Jiří DANIHELKA, Eszter RUPRECHT, Karsten WESCHE a Isabell HENSEN. Declining genetic diversity and increasing genetic isolation toward the range periphery of Stipa pennata, a Eurasian Feather Grass. \textit{International Journal of Plant Sciences}. Chicago: University of Chicago Press, roč.~173, č.~7, s.~802-811. ISSN~1058-5893. doi:10.1086/666663. 2012.
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