I used area-based sampling techniques to sample the Mohn Mill site in the virtual system. The systematic procedure was easiest method and requiring only 8 hours. I have calculated the percent errors for each sampling technique below:
Systematic Percent Errors:
American Basswood (Rare species): 6.23%
Red Maple (Common species): 1.29%
Eastern Hemlock (Common species): 1.59%
Random Percent Errors:
American Basswood (Rare species): 7.0%
Red Maple (Common species): 1.89%
Eastern Hemlock (Common species): 2.76%
Haphazard Percent Errors:
American Basswood (Rare species): 7.0%
Red Maple (Common species): 1.67%
Eastern Hemlock (Common species): 4.02%
These experiments are conducted in the virtual simulation and American Basswood is rarest species in among them and these procedures are accurate. Each method produced errors. The lowest average percent mistakes are for common and rare species. The random procedure with a 1.29% is the lowest.
I took 20 sample size for this experiment and I do not think so this was sufficient for various investigation. In the 20 sample locations were adequate. In these three species I found, there are other species Sweet Birch, Hawthorn, and White Oak. Many species had 0.01 density I do not think 20 sample size was adequate for the abundance of species.