What role do decomposers play in an ecosystem?

Decomposers play a critical role in maintaining the health of ecosystems by breaking down dead organic matter, such as fallen leaves, dead plants, and decaying animals. This process of decomposition is essential because it recycles nutrients back into the soil, making them available for use by primary producers like plants. By converting complex organic macromolecules into simpler inorganic substances, decomposers help maintain the nutrient cycle, which is foundational for ecosystem productivity. This recycling process ensures that essential elements such as carbon, nitrogen, and phosphorus are continually available for living organisms, contributing to the overall balance and sustainability of the ecosystem. Without decomposers, ecosystems would accumulate organic waste, leading to nutrient depletion and a decline in biodiversity.