Holocene geographic spread and population expansion of Fagus grandifolia in Ontario, Canada

Three radiocarbon-dated Holocene pollen sequences from S Ontario provide the basis for a reconstruction of changes in the distribution and abundance of Fagus grandifolia during the early Holocene. Spread of F. grandifolia across S Ontario may have taken place at population densities too low to be visible in the pollen record. Low rates of increase of F. grandifolia populations appear to have been more significant in limiting its abundance and distribution than seed dispersal. -from Author