Effects of Changes in Temperature, Water Flow and  Nutrients Concentrations on Dissolved Oxygen Levels and Fish Populations - A Computer Model

To implement the program and study the models

1.   Make a new folder on your computer desktop.

2.   Label the folder (we suggest UWF Stella)

3.   Copy the following files into the folder.  All files must be down loaded prior to use.

       a.    STELLA® Save-Diabled Demo may be downloaded from High Performance Systems Inc.
              Request a password.  This will be emailed to you within a few minutes.
             Once you have the password, log in and download STELLA® Save-Diabled Demo File

        b. Down load Stuffit Expander Demo Installation from this site. 
            You may find out more about stuffit from  Aladin Stuffit
             

        c. Download the Models in a compressed file format from this site.

4.  From the folder run the Stella 8 Demo Installation and follow the screen prompts

5.  From the folder run the Stuffit Expander Installation and follow the screen prompts

Double-Click on the file: uwf_stella.sit in your folder, expand the files into the same folder.
You will have five (5) new files in the folder:

 uwf1_DO_Temp.stm -  This model graphs water temperature vs. dissolved oxygen

 uwf2_DO_h20_flow_temp.stm- This model graphs water temperature/water flow vs. dissolved oxygen

 uwf3-DO-Fish-H20_Temp.stm- This model graphs water temperature/dissolved oxygen vs. fish population

 uwf4-DO-Fish-H20_Temp_food.stm- This model graphs temperature/dissolved oxygen/nutrients vs. fish population.

 .DS_Stor - 

6.  To view a model double click on the model file (uwf1, uwf2, uwf3, or uwf4) in your folder.

7.  To find out about the variables and their relationships click on "Information" box. To operate the model, adjust the variables using the arrows on variable indicators at the bottom of the page.  Predict what you think will happen and what the graph will look like.  Then click run.  The model will automatically graph selected changes in the variables.  Click on "Table" Box to see data points derived from the model. 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

For additional information contact

Carol Briscoe
Associate Professor
College of Professional Studies

cbriscoe@uwf.edu