Seedling regeneration density on southern pine beetle and non-southern pine beetle impacted permanent plots in Coweeta white pine watershed 1.
Abstract:
Seedling density was compared between beetle-impacted and non-beetle-impacted white pine plots on watershed 1.
For this study, a seedling is defined as any tree species shorter than breast height (1.37 m). Seedlings were identified and their density was calculated by counting the number of stems in a 5x5 m corner of each of the eight modules within the 4 beetle and 4 non-beetle plots. Seedling data were collected 23 Jul - 6 Aug 2001, 23 Jul - 2 Aug 2002, and 21 Jul - 1 Aug 2003. Tree seedling counts were converted to seedling density per square meter by dividing by 25.
| Variable | Definition |
|---|---|
| Year | sampling year |
| Plot | permanent plot number permanent plot number |
| Module | module number, each plot has 8 modules module number, each plot has 8 modules |
| Species | seedling species |
| Count | seedling count per 25 square meters conversion to density per square meter was calculated in SAS |
