Wiliams, K.; Davis, S. D.; Gartner, B. L.; Karlsson, S. (USDA Forest Service Pacific Southwest Research Station, 1991)
We studied factors that restrict colonization of
grassland by Quercus durata Jeps., an oak commonly found in
chaparral on serpentine soils. The study site contained a chaparral/
grassland border that had been stable f ...