CALFUN 2.1: CALculating FUNctional Lower Developmental Thresholds
Written by David Legg
Department of Renewable Resources
University of Wyoming
Laramie, Wyoming
82071
United States of America
What is CALFUN?
CALFUN is a collection of computer programs that CALculate the FUNctional lower
developmental threshold of insects from field-collected data. It does this using
nonlinear regression and numerical techniques. Several years of field-
collected data are needed before CALFUN can be run. These consist of temperature
files (daily maximum and minimum temperatures), with one file being created for each
year of the field study. For each year of the study, the scientist visits a site
where the insect is known to occur and observes the population for the phenological
event of interest (i.e., date of first emergence, 50% emergence, etc.). Daily
temperatures are simulatneously recorded, from a pre-determined starting date (say, mid-winter) through
the day the phenological event occurred. Once a "sufficient" number of years
of data are thus collected, CALFUN can be run. CALFUN will provide to you estimates
of the insect's lower developmental threshold and thermal constant.
Conditions of Distribution and Limitation of Liability
All computer programs distributed by the University of Wyoming are on an
AS IS basis without warranty. The University of Wyoming shall have no
liability or responsibility to cooperator or any other person or entity
with respect to liability, loss, or damage caused or alleged to be caused
directly or indirectly by programs distributed by the University of Wyoming,
including but not limited to interruption of service, loss of business,
or anticipatory profits or consequential damages resulting from use or
operation. The University of Wyoming shall not be liable for any damages
caused by delay in delivering or furnishing programs.
Before You Download CALFUN....
You will need a copy of
WINZIP
to extract the program and data files
You will need to decide on the drive and subdirectory in which to place the program and data files
Before You can Run CALFUN....
You will need to extract the program and data files (do this with WINZIP)
You will need to open a DOS window (CALFUN runs from the command line)
To Download CALFUN....
There are 19 executable files in CALFUN
I have also provided to you six practice data files
Practice data filenames are WARM.1, WARM.2, WARM.3, COLD.1, COLD.2, COLD.3
Click here
to download the compressed file, calfun21.zip
To Run CALFUN....
Within Windows: RUN calfun.exe
Within the DOS window: change directories so you are in the subdirectory that contains CALFUN, then
type calfun.exe and press the enter key
A Paper on CALFUN....
Click here
to to view a paper on CALFUN