P (%) I
Eroded/disturbed sites    
Betulapapyrifera 38.43% 0.17
Quercusrubra 52.01% 0.21
Acer rubrum 59.89% 0.22
Stable upland sites    
Betulapapyrifera 45.07% 0.18
Quercusrubra 55.56% 0.22
Acer rubrum 58.82% 0.21
Reference sites    
Betulapapyrifera 41.64% 0.17
Quercusrubra 53.19% 0.23
Acer rubrum 60.78% 0.25
Genetic diversity descriptive statistics. P: percentage of polymorphic loci; I: Shannon’s information index.
Table 5: Level of polymorphism and Shannon’s information index in Betula papyrifera (white birch), Quercus rubra (red oak) and Acer rubrum (red maple) populations based on ISSR data.