7: Life Science: Ecosystem Variables
- Due No due date
- Points 3
- Questions 3
- Time Limit None
Instructions
Greta and Scott did a field study with a park ranger to learn where black bears find salmonberries to eat in the forests of Washington. They did the following field study.
Field Study Question: How does the number of salmonberry plants change among different habitats?
Procedure:
1. Go to the forest habitat. Record the location, date, and time.
2. Choose three different locations in the forest habitat. Mark each location with a flag and attach a 30-meter rope. Label the flags as Location 1, Location 2, and Location 3.
3. Using a compass, walk 30 meters north from Location 1. Mark the line walked with the rope.
4. Count the number of salmonberry plants that touch the 30-meter rope and record as Location 1.
5. Repeat steps 3 and 4 for Locations 2 and 3 for the forest habitat.
6. Repeat steps 1 through 5 for the stream bank and forest edge habitats.
7. Calculate and record the average number of salmonberry plants for each habitat.