DIETARY COMPOSITION OF ORGANISMS IN AN AQUATIC ECOSYSTEM
Organism |
Food Source (% of diet) |
Algae |
Stoneflies |
Midges |
Hellgrammites |
Caddisflies |
Algae |
|
|
|
|
|
Stoneflies |
|
|
90 |
|
10 |
Midges |
100 |
|
|
|
|
Hellgrammites |
|
20 |
10 |
|
70 |
Caddisflies |
70 |
|
30 |
|
|
The table above shows how much each organism in an aquatic ecosystem relies on various food sources. The rows represent the organisms in the ecosystem, and the columns represent the food source. The percentages indicate the proportional dietary composition of each organism. High percentages indicate strong dependence of an organism on a food source.
Based on the food sources indicated in the data table, construct a food web in the template below. Write the organism names on the appropriate lines AND draw the arrows necessary to indicate the energy flow between organisms in the ecosystem.