Dominance probability is the probability that a tree will
survive and become a dominant or codominant tree
a given number of years after planting or shelterwood removal. For example
0.6 means that 60 percent of the trees will survive and become dominant
or codominant trees. Example
Scenario
A forester is regenerating a stand using the shelterwood
method. She would like to have 100 stems of reproduction per acre
that are free to grow (dominant) in the new stand
11 years after planting (8 years after the shelterwood overstory removal). The red oak site index is 62.
The percent stocking for the shelterwood will be 40  60%.
She wants to know how many seedlings of what stem caliper
she
should use to achieve her desired number of trees per acre.
Using OAKUS, she obtains the following results:

No Competion Control 

Not Clipped 
Clipped 
Stem Caliper (in.) 
0.25 
0.5 
0.75 
0.25 
0.5 
0.75 
Dominance Probability 
0.0385

0.191 
0.2989 
0.0469 
0.2248 
0.3438 
Required Number 
2597 
524 
335 
2132 
445 
291 

With Competion Control Twice 

Not Clipped 
Clipped 
Stem Caliper (in.) 
0.25 
0.5 
0.75 
0.25 
0.5 
0.75 
Dominance Probability 
0.1321
 0.4728 
0.6183 
0.1576 
0.5243 
0.6656 
Required Number 
757 
212 
162 
635 
191 
150 
By selecting larger seedlings and top clipping them, she can
dramatically decrease the number of seedlings needed to
achieve her target trees per acre. Start using OAKUS 