Why is a diatom decomposer?

Answer 1

Diatoms are primarily known as primary producers rather than decomposers, as they are a type of algae that perform photosynthesis. However, when diatoms die, their silica-based cell walls contribute to the organic matter in the ecosystem, providing nutrients for decomposers like bacteria and fungi. This process plays a crucial role in nutrient cycling, as the breakdown of diatom remains helps recycle essential elements back into the environment. Thus, while diatoms themselves are not decomposers, they indirectly support decomposition processes.