4.2: Food web activity
Use the following information to construct a food web detailing the ecological relationships
for this ecosystem.
Organism
Water crowfoot
Cased caddisfly larva
Damselfly nymph
Mayfly nymph
Dragonfly
Duck
Freshwater shrimp
Water vole
Algae
Otter
Water starwort
Pond snail
Alderfly nymph
Pond skater
Frog
Tadpole
Micro plants
Great diving beetle
Bullhead fish
Energy source
Sunlight
Micro plants, algae, particles of dead plants
& animals
Micro plants, algae, particles of dead plants
& animals
Micro plants, algae, particles of dead plants
& animals
Other adult insects and small flies
All nymphs, all plants, snails, tadpoles,
young frogs
Particles of dead plants and animals
Plants
Sunlight
Fish, frogs and newts
Sunlight
Micro plants, all water plants and algae
Micro plants, algae, particles of dead plants
and animals
Particles of dead plants and animals
Mayfly, midge larvae, pond skater,
caddisfly, small flies
Micro plants, algae
Sunlight
Water flea, snails, tadpole, all nymphs
Diving beetle, tadpole, all nymphs, water
flea, snail, midge larvae