Local ecosystems of Moscow ponds with communities of various plants and animals and associated abiotic conditions are a complex vertically differentiated system. The ecological state of many small ponds is unfavorable. Anthropogenic influences lead to their pollution, which leads not only to the death and reduction of biological diversity of aquatic organisms, but also adversely affects the health of the population. When organic and mineral substances get into the ponds, the phosphorus and nitrogen contained in them serve as food for algae, which grow, close each other's light, and there is a process of mass death and decay, i.e. The process of eutrophication of water bodies is developing. Recently, work is underway to clean and restore the ponds. However, at the same time, the natural mode of their life is often violated, many important functions are lost, picturesque and recreational value is lost.