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Ecosystems - WJEC What is an ecosystem?

A variety of ecosystems are spread across the world, each with distinctive interacting characteristics and components. They range from small ecosystems such as a freshwater pond, to global ecosystems such as deserts.

Part of GeographyWeather, climate and ecosystems

What is an ecosystem?

An is a natural environment and includes the and that live and interact within that environment. Flora, fauna and are the or living components of the ecosystem. Ecosystems are dependent on the following or non-living components:

  • - the temperature and amount of rainfall are very important for determining what can survive in the ecosystem
  • soil - the soil type is important as this provides nutrients that will support different plants
  • water - the amount of water available in an ecosystem will determine what plants and animals can be supported

The biotic parts of the ecosystem, which include bacteria, flora and fauna, have a complex relationship with the abiotic components - changing one will lead to a change in the other.

The nutrient cycle.
Figure caption,
Bacteria decomposes material in soil to create nutrients, which plants take in. Plants can be eaten by animals. Waste from dead plants and animals are added to the soil.