The Tucannon Harvesting Model

The documentation in chapter 14 of the 1st edition or chapter 15 (2nd ed.) explains the model in sufficient detail
to allow you to build this model on your own.
But for the purpose of the Tucannon Harvesting Exercise,
the 1st exercise in Chapter 14 (1st ed) , you may download the model.

for Macintosh Computers
 

for Windows Computers
 

 for Vensim Users
The original Mac version is a 52 KB Stella file. It was constructed with Stella Research 5.0 and tested on a Quadra 610 with a 13" monitor. (The interface fits nicely on this monitor with the page setup at 60% print reduction). Aladin Systems' Stuffit was used to create a 15KB archive file which you may download to your computer. After the file is unstuffed, try the setting the harvest fraction to 75% after the 120th month and leave the other parameters at their default values. You should receive a congratulatory note when the cumulative harvest exceeds $5 million around the 250th month of the simulation.

Click HERE to download the model.
  The windows version is a 52 KB Stella File. It was construced with Stella Ver 5.0 and tested on an IBM ThinkPad with a 12" screen using Windows 95. The Winzip program was used to compress the file to 16KB. After the file is unzipped, try the a simulation with 50% harvesting after 120 months. If you leave the other parameters at the default values, you should receive a congratulatory note that the cumulative harvest exceeds $5 million around the 250th month of the simulation

Click HERE to download the model.
  A Vensim version of the Tucannon Salmon Harvesting model was constructed with Vensim PLE Plus. (The PLE version does not allow gaming simulations, like the simulation shown part way through a game on page 166 of the book. So you need PLE Plus to run the model.)

The model is stored as a *.mdl file, a regular Vensim file. It should open with a control panel in view. Click on the game option (the boy kicking the ball) and set the game to run 24 months at a time to match the type of games described in Chapter 14.

Click HERE to download the model.