1. Static Network of the Great Salt Lake Ecosystem
This is the static network of the GSL. The students have discovered a relationship between salinity and halobacterium growth. We will now see how that relationship will be visualized in the network –please note they have data only for effect of salinity on Halobacterium growth and they do not have knowledge about other quantitative relationships –please be sure to distinguish hypothesis from fact.

2. Effect of salinity on Halobacterium growth:
Visualization Based on Experimental Data
First they started with a salinity of 2.5M –what was the effect on growth of halo?

3. Effect of salinity on Halobacterium growth:
Visualization Based on Experimental Data
Observation: Halo did not grow at all

4. Effect of salinity on Halobacterium growth:
Visualization Based on Experimental Data
At a salinity of 3.0M –what was the effect on growth of halo?

5. Effect of salinity on Halobacterium growth:
Visualization Based on Experimental Data
Observation: Halo showed moderate growth

6. Effect of salinity on Halobacterium growth:
Visualization Based on Experimental Data
At a salinity of 3.5M –what was the effect on growth of halo?

7. Effect of salinity on Halobacterium growth:
Visualization Based on Experimental Data
Observation: Halo grew even better

8. Effect of salinity on Halobacterium growth:
Visualization Based on Experimental Data
At a salinity of 4.0M –what was the effect on growth of halo?

9. Effect of salinity on Halobacterium growth:
Visualization Based on Experimental Data
Observation: Halo grew extremely well

10. Effect of salinity on Halobacterium growth:
Visualization Based on Experimental Data
At a salinity of 4.5M –what was the effect on growth of halo?

11. Effect of salinity on Halobacterium growth:
Visualization Based on Experimental Data
Observation: Halo growth was less relative to growth at 4.0M; 4.5M is approximately the salinity of the North arm of the lake.
Make students HYPOTHESIZE what will happen to rest of the network –say starting with other nodes directly affected by salinity. Students should first identify the appropriate nodes.

13. Effect of salinity on Halobacterium growth:
Visualization Based on Experimental Data
Observation: Halo growth was less relative to growth at 4.0M; 4.5M is approximately the salinity of the North arm of the lake.
Make students HYPOTHESIZE what will happen to rest of the network –say starting with other nodes directly affected by salinity. Students should first identify the appropriate nodes.

14. Formulate new hypotheses:
What is the effect of salinity on other species in this network
Observation: Halo growth was less relative to growth at 4.0M; 4.5M is approximately the salinity of the North arm of the lake.

15. Formulate new hypotheses:
What is the effect of salinity on other species in this network
Observation: Halo growth was less relative to growth at 4.0M; 4.5M is approximately the salinity of the North arm of the lake.

16. Formulate new hypotheses:
What is the effect of salinity on other species in this network
Observation: Halo growth was less relative to growth at 4.0M; 4.5M is approximately the salinity of the North arm of the lake.

18. North arm
South arm
Observation: Halo growth was less relative to growth at 4.0M; 4.5M is approximately the salinity of the North arm of the lake.