Additional testing of var, pestab, and eind needed due to overhaul of how alpha and beta are calculated in establishment for annual species

[kpalmqui]

The code for the calculation of both shape parameters - alpha and beta - of the beta distribution were incorrect. Additional testing is now required to identify the combination of var, pestab, and eind that will result in:

1) low cheatgrass biomass 2) high cheatgrass biomass 3) low to moderate annual forb biomass that varies year to year

Also, need to test and consider pseed.

[kpalmqui]

• First test for all values of pestab for eind = 20 and var = 0.0001

• Then complete testing for all pestab, eind, and var parameters:

• pestab: 0.05 to 0.9 (0.05 increments)

• eind: 2 to 100 (2, 5, then increments of 10)

• var: 0.0001 to 0.08 (make sure this is chosen correctly based on pestab!) See note below.