Leading dominants and size-class distribution analyses were performed on the vegetation data from 483 20 x 50 meter forest plots from the Bristol Hills of New York. Both analyses indicated the lack of replacement of Quercus species except on burned sites. Acer saccharum and A. rubrum are increasing in importance in Quercus dominated plots.
Aggrading upland forests of this region are tending towards one of three mature forest types. Tsuga canadensis, Acer saccharum forests are found in ravines, and wet areas at streamsides and around beaver ponds. Acer saccharum, Fagus grandifolia forests are found on lower elevation slopes. Upper slope forests are tending towards an increase of Acer rubrum in Quercus rubra and Q. prinus dominated stands.