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单词	periphyton
释义	periphyton /pəˈrɪfɪtɒn / noun [mass noun] Ecology Freshwater organisms attached or clinging to plants and other objects projecting above the bottom sediments: the tadpoles used in this experiment feed primarily on periphyton... They are commonly called ‘pondscum’, and make up the filamentous periphyton in ponds, growing on and around the larger aquatic plants. A spongy, Dijon-colored city of algae and microscopic creatures that floats on the surface, periphyton cleanses the Everglades of excess nutrients and pollutants. The tadpoles used in this experiment feed primarily on periphyton by scraping the surfaces of tank walls and leaves. Derivatives periphytic adjective ... How important are rotifers to the ecology of springs and soils, interstitial, and periphytic habitats? The presence of herbivores also increased periphytic nutrient content in some experiments. A five-level light gradient experiment corroborated these findings: full sunlight suppressed periphytic accumulation. Origin 1960s: from Greek peri- 'around' + phuton 'plant'.
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