Assg: ALL 2013
Name
SIERRA NEVADA FOOD WEB ACTIVITY
Date
pd.
Write out your 8 simple food chains
1
2
3
4
5
6
7
8
Food chain from above #____
Food chain from above #____
Energy available at each trophic
level?
Producer
Primary
consumer
Secondary
consumer
Tertiary
consumer
Quaternary
consumer
Decomposer
4, 200 (kcal)
7. Describe what the differences between a pyramid of energy, a pyramid of numbers, and a pyramid of biomass.
8. Describe what would happen to this food web if all the primary consumers became extinct.
9. Refer to the simple food chain above in which you identified the amount of calories available. How can a
decomposer survive on such little energy?
10. Describe what would happen to this food web if the decomposers were removed.
11. What would happen to this food web if a non-native beetle started killing all the oak trees?
12. What do you think is more resilient, food webs with many species, or food webs with just a few species? Please
explain your answer fully.
20 points EXTRA CREDIT! Design a Hawaii food web (terrestrial) that has at least 5 food chains that are interconnected.