Virtual Lab 11: Model Ecosystems Worksheet
Name:
Date:
Fill out the following table with data from the lab exercise:
Table 1: For each ecosystem type record the results of your analysis of the various
organisms within the different trophic levels, how much energy is available at each
trophic level, the number of organisms at each trophic level, and the “energy
conversion efficiency” (E.C.E.) ratio between trophic levels.
Ecosystem
Type
Deciduous
Forest
Producers
Organisms
present:
Energy:
Numbers:
Hot Desert
Organisms
present:
Energy:
Numbers:
Grassland
Organisms
present:
Energy:
Numbers:
Antarctic
Ocean Shore
Organisms
present:
Energy:
Numbers:
Freshwater
Lake
Organisms
present:
Energy:
Numbers:
First Order
Heterotrophs
Organisms
present:
Second Order
Heterotrophs
Organisms
present:
Third Order
Heterotrophs
Organisms
present:
Energy:
Numbers:
E.C.E.:
Organisms
present:
Energy:
Numbers:
E.C.E.:
Organisms
present:
Energy:
Numbers:
E.C.E.:
Organisms
present:
Energy:
Numbers:
E.C.E.:
Organisms
present:
Energy:
Numbers:
E.C.E.:
Organisms
present:
Energy:
Numbers:
E.C.E.:
Organisms
present:
Energy:
Numbers:
E.C.E.:
Organisms
present:
Energy:
Numbers:
E.C.E.:
Organisms
present:
Energy:
Numbers:
E.C.E.:
Organisms
present:
Energy:
Numbers:
E.C.E.:
Organisms
present:
Energy:
Numbers:
E.C.E.:
Organisms
present:
Energy:
Numbers:
E.C.E.:
Organisms
present:
Energy:
Numbers:
E.C.E.:
Energy:
Numbers:
E.C.E.:
Energy:
Numbers:
E.C.E.:
Questions:
1.
What is the ultimate source of energy for most ecosystems?
2. Define each of the following types of organisms:
a. Autotrophs
b. Hetertrophs
c. Carnivores
d. Decomposers
3. Describe what happens to energy within an ecosystem.
4. Describe what happens to nutrients within an ecosystem.
5. What is the efficiency of energy transfer from a lower trophic level to the next
highest level?
Send me the completed worksheet as an attachment to the assignment.