Periphyton

**Definition:** A complex mixture of organisms (algae, cyanobacteria, heterotrophic microbes, detritus, etc.) clinging on the surfaces of plants and other objects projecting from the bottom sediments of aquatic ecosystems.

**Tree numbers:** - B05.080.250 - G06.591.937 - G16.500.275.157.049.100.500.937 - N06.230.124.049.100.500.875