3.2 Lesson Name: Who Catches Who?

Salmon are known for extensive migrations. What stocks are harvested by each fishery?

Analysis Approach:

Use the Map Icons to determine which stocks are harvested by each fishery.

How To Do It:

1. Launch and run the model.
2. Make sure the Fishery Circles and Stock Circles buttons on the tool bar are activated.
3. Click on a Fishery Icon. This will draw circles around all stocks harvested by that fishery (the name of the fishery will be displayed in the lower left corner of the map). The relative size of the circle indicates the approximate relative harvest rates on each stock.
4. Repeat step 3 for other fisheries of interest.
5. Click on the map background to clear the circles.
6. Click on a Stock Icon. This will draw circles around all fisheries that harvest that stock (the name of the stock will be displayed in the lower left corner of the map). Again, the relative size of the circle indicates the approximate relative harvest rates in each fishery.
7. Repeat step 6 for other stocks of interest.

1. Do you see any trends in the number of stocks harvested by different fisheries?
2. Which fisheries harvest the greatest number of stocks?
3. Which fisheries harvest the fewest number of stocks?
4. What American stocks are harvested in Canadian fisheries?
5. What Canadian stocks are harvested in American fisheries?