What defines the ecological role of detritus in aquatic systems?

Detritus plays a crucial ecological role in aquatic systems primarily by serving as a source of nutrients for organisms. As organic matter, it consists of decomposed plant and animal material, along with other organic debris, which, when broken down, releases essential nutrients such as nitrogen, phosphorus, and carbon back into the water. These nutrients are vital for primary producers, such as algae and aquatic plants, which form the base of the food web. This nutrient recycling supports higher trophic levels, including herbivores and carnivores, demonstrating how the presence of detritus is integral to the overall productivity and health of aquatic ecosystems.

Detritus also contributes to the biodiversity of these environments by providing habitats for microorganisms and invertebrates that feed on the decomposing material. This decomposition process creates a dynamic nutrient cycle that enhances the ecological balance and energy flow within aquatic systems.