Floristic Quality Assessment (FQA) is a vegetation-based assessment tool that evaluates an area’s ecological integrity based on its plant species composition. C-values that range from 0 to 10 are assigned to all species in a region or state and represent an estimated probability that a plant is likely to occur in an altered or unaltered landscape. Several numeric indices can be calculated from a site species list and associated C-values. More information about the Floristic Quality Assessment method and the Colorado FQA Database can be found here.
CNHP has developed a user-friendly calculator to calculate Floristic Quality Assessment (FQA) indices from any plant list. Download the calculator by clicking the image or the link below.
Using the FQA Calculator
The FQA Calculator is a Microsoft Access database and has been tested under Access versions 2007 and 2010. You must have Microsoft Access 2007 or later installed on your computer in order to use it. Depending on the computer security protocols in place where you work, you may need to place the database file in a "trusted" location and/or go through steps to unblock/enable content before you can use it. For further help, see your organization's computer security/IT person.
Download the FQA Calculator and Supporting Documents
- Floristic Quality Assessment (FQA) Calculater as a zipped file
- Users Guide to the Floristic Quality Assessment (FQA) Calculator for Colorado
- Description and calculation of Floristic Quality Assessment (FQA) indices
- Additional information about the Colorado Floristic Quality Assessment (FQA) database