Population Genetic Diversity and Structure inGoodyera rosulacea(Orchidaceae), Endemic in Korea, and Implications for Conservation

2010 ◽  
Vol 47 (6) ◽  
pp. 460-470 ◽  
Author(s):  
Mi Yoon Chung ◽  
Myong Gi Chung
Keyword(s):  
Genetic Diversity ◽  
Population Genetic ◽  
Population Genetic Diversity ◽  
Genetic Diversity And Structure

Population genetic diversity and structure of two rare vernal pool grasses in central California

2011 ◽  
Vol 13 (1) ◽  
pp. 117-130 ◽  
Author(s):  
Sarah P. Gordon ◽  
Christina M. Sloop ◽  
Heather G. Davis ◽  
J. Hall Cushman
Keyword(s):  
Genetic Diversity ◽  
Population Genetic ◽  
Vernal Pool ◽  
Central California ◽  
Population Genetic Diversity ◽  
Genetic Diversity And Structure

scholarly journals Temporal changes in population genetic diversity and structure in red and white clover grown in three contrasting environments in northern Europe

2012 ◽  
Vol 110 (6) ◽  
pp. 1341-1350 ◽  
Author(s):  
Rosemary P. Collins ◽  
Áslaug Helgadóttir ◽  
Bodil E. Frankow-Lindberg ◽  
Leif Skøt ◽  
Charlotte Jones ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
White Clover ◽  
Population Genetic ◽  
Temporal Changes ◽  
Northern Europe ◽  
Population Genetic Diversity ◽  
Genetic Diversity And Structure

scholarly journals Dispersal rate and riverine network connectivity shape the genetic diversity of freshwater amphipod metapopulations

2020 ◽  
Author(s):  
Roman Alther ◽  
Emanuel A. Fronhofer ◽  
Florian Altermatt
Keyword(s):  
Genetic Diversity ◽  
Population Genetic ◽  
Network Connectivity ◽  
Simulation Models ◽  
Spatial Arrangement ◽  
Stochastic Simulations ◽  
Amphipod Species ◽  
Dispersal Rate ◽  
Population Genetic Diversity ◽  
Genetic Diversity And Structure

AbstractTheory predicts that the distribution of genetic diversity in a landscape is strongly dependent on the connectivity of the metapopulation and the dispersal of individuals between patches. However, the influence of explicit spatial configurations such as dendritic landscapes on the genetic diversity and structure of metapopulations is still understudied, and theoretical corroborations of empirical patterns are largely lacking. Here, we used real-world microsatellite data and stochastic simulations of two metapopulations of freshwater amphipods in a 28,000 km2 riverine network to study the influence of spatial connectivity and dispersal strategies on their spatial genetic diversity and structure. We found a significant imprint of the riverine network connectivity on the genetic diversity of both amphipod species. Data from 95 sites showed that allelic richness and observed heterozygosity significantly increased towards more central nodes of the network. In simulation models, dispersal rate was suggested to be the key factor explaining the empirically observed distribution of genetic diversity. Contrary to often-claimed expectations, however, the relevance of directionality of dispersal was only minor. Surprisingly, also the consideration of site-specific carrying capacities, for example by assuming a direct dependency of population size with local river size, substantially decreased the model fit to empirical data. This highlights that directional dispersal and the spatial arrangement of population sizes may have a smaller relevance in shaping population genetic diversity of riverine organisms than previously thought, and that dispersal along the river network is the single-most important determinant of population genetic diversity.

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