Freshwater pond - food chain and food web

The freshwater pond ecosystem is finely balanced because of the food chain and the food web.

The food chain

A food chain shows how each living thing gets food. In a food chain, energy and nutrients are passed from one organism to the next. The producer provides the basic source of food which other organisms, the consumers, then feed on.

The food chain from bottom to top: Leaves and algae, Caddis, Fish, Kingfisher.

The food web

This includes all of the connections between producers and consumers in an ecosystem. The food web shows how interconnected all of the different organisms are.

Bottom layer: detritus, algae. Layer 2: midge larva, blackfly, mayfly, aquatic worms. Layer 3: great diving beetle, stonefly, caddis, dragonfly. Layer 4: fish. Top layer: heron, kingfisher.