What is the Function of an Ecosystem?

The function of an ecosystem refers to the physical and biological processes that occur within it. They can be broadly divided into three main functions:

1. Energy Flow Energy from the Sun is captured by producers (plants) through photosynthesis. This energy is then transferred through the ecosystem via the Food Chain and Food Web. As herbivores eat plants, and carnivores eat herbivores, energy flows linearly from one trophic level to the next (following the 10% law).

2. Nutrient Cycling (Biogeochemical Cycles) Unlike energy, which flows in one direction and is lost as heat, nutrients (like Carbon, Nitrogen, Oxygen, and Water) are continuously recycled. Decomposers break down dead matter, releasing nutrients back into the soil and air, which are then absorbed by plants again.

3. Ecological Regulation (Balance) Ecosystems naturally regulate the population of species through predator-prey relationships. They also regulate the environment by purifying air and water, controlling floods, and regulating the climate (homeostasis).