16 



All saplings and shrubs (woody plants less than 7.5 cm in diam- 

 eter, but greater than 1.0 m in height, excluding vines) in each sample 

 plot were identified by species, and the height class of each individual 

 was recorded. Saplings or shrubs with more than one stem clustered from 

 a single root system were counted as individuals only when separation 

 occurred at or below ground level. The following height classes were 

 used: Class 1 = 1.0 to 2.0 m, Class 2 = 2.1 to 3.0 m, Class 3 = 3.1 to 

 4.0 m, Class 4 - 4.1 to 5.0 m, and Class 5 = >5 . m. 



All climbing woody vines greater than 1.0 m in height in each 

 sample plot were identified by species, the stems of each species coun- 

 ted, and the height class of the highest individual on each tree or 

 sapling/shrub recorded. The following height classes were used: 

 Class 1 = 1.0 to 3.0 m, Class 2 = 3.1 to 6.0 m, Class 3 = 6.1 to 12.0 m, 

 and Class 4 = >12.0 m. Vines were recorded when any portion of the 

 plant occurred in, or overhung, the plot. Individual stems were 

 recorded when separation from the root system occurred at or below 

 ground level. 



Percent cover was estimated for each species of herb and woody 

 seedling (greater than 1.0 m in height) rooted in the plot in two 

 randomly located 1.0-m 2 quadrats in each subplot using the Daubenmire 

 (1968) cover class method. 



Analyzing Vegetation Data 



Importance values for species in all vegetation layers except the 

 herbaceous layer were calculated by adding values for relative density, 

 relative frequency, and relative dominance. Importance values for her- 

 baceous species were calculated by summing relative frequency and 



