Ключевые слова: alga, algae, algae pond, aquatic, bacteria, biodiversity, biology, botanic, botany, climate, cover, dirty, ecological, ecology, ecosystem, environment, eutrophication, floating, flow, green, green algae, greenery, growth, lake, layer, liquid, microcystin, microorganisms, mud, natural, nature, organism, outdoor, park, pigment, plant, polluted, pollution, pond, problem, scenery, seasonal, spring, stagnant, still, summer, surface, swamp, water, wet,