<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Dutech, C.</style></author><author><style face="normal" font="default" size="100%">Sork, V. L.</style></author><author><style face="normal" font="default" size="100%">Irwin, A. J.</style></author><author><style face="normal" font="default" size="100%">Smouse, P. E.</style></author><author><style face="normal" font="default" size="100%">Davis, F. W.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Gene flow and fine-scale genetic structure in a wind-pollinated tree species, Quercus lobata (Fagaceaee)</style></title><secondary-title><style face="normal" font="default" size="100%">American Journal of Botany</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">bearing correlogram California oak genetic autocorrelation analysis microsatellite pollen and seed dispersal tree species wind direction valley oak Quercus lobata</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2005</style></year></dates><number><style face="normal" font="default" size="100%">2</style></number><volume><style face="normal" font="default" size="100%">92</style></volume><pages><style face="normal" font="default" size="100%">252-261</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">California Valley oak (Quercus lobata), one of the state&#039;s most distinctive oak species, has experienced serious demographic attrition since the 19th century, due to human activities. Recent estimates of pollen dispersal suggest a small reproductive neighborhood. Whether small neighborhood size is a recent phenomenon, a consequence of reduced gene flow caused by demographic changes, or whether it has been historically restricted, remains unclear. To examine this question, we have characterized the spatial genetic structure of N = 191 Q. lobata individuals, spread over an area of 230 ha, using eight microsatellite loci. The observed autocorrelogram suggests an historical standard deviation of gene flow distance of about 350 m per generation, higher than contemporary pollen dispersal estimates. To determine whether our estimates were affected by strong prevailing winds from the west–northwest, we developed and utilized a novel anisotropic autocorrelation analysis. We detected no more than a hint of anisotropy, and we concluded that adult spatial structure is indicative of strong historical signature of &quot;isolation by distance.&quot; This historical estimate provides a useful reference value against which to gauge the future gene flow consequences of ongoing anthropogenic disturbance.</style></abstract></record></records></xml>