Periphyton and Its Study Methods

Wu, Yonghong

doi:10.1016/b978-0-12-801077-8.00001-6

Cited by 2 publications

(1 citation statement)

References 144 publications

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“…Epiphytic algae are often attached to the surface of submerged plants. Together with bacteria, fungi, protozoa, and inorganic and organic debris, they make up a tiny ecosystem independent of plants and water [ 18 , 19 ] and make a significant contribution to the absorption and degradation of nutrients. Meanwhile, epiphytic algae have a high sensitivity to water pollutants and are closely related to the pH and nutrients of the surrounding environment [ 20 , 21 , 22 ], making them a useful indicator for monitoring polluted water [ 23 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

Effects of Enrofloxacin on the Epiphytic Algal Communities Growing on the Leaf Surface of Vallisneria natans

et al. 2022

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Enrofloxacin (ENR) is a member of quinolones, which are extensively used in livestock farming and aquaculture to fight various bacterial diseases, but its residues are partially transferred to surface water and affect the local aquatic ecosystem. There are many studies on the effect of ENR on the growth of a single aquatic species, but few on the level of the aquatic community. Epiphytic algae, which are organisms attached to the surface of submerged plants, play an important role in the absorption of nitrogen and phosphorus in the ecological purification pond which are mainly constructed by submerged plants, and are commonly used in aquaculture effluent treatment. Enrofloxacin (ENR) is frequently detected in aquaculture ponds and possibly discharged into the purification pond, thus imposing stress on the pond ecosystem. Here, we performed a microcosm experiment to evaluate the short-term effects of pulsed ENR in different concentrations on the epiphytic algal communities growing on Vallisneria natans. Our results showed an overall pattern of “low-dose-promotion and high-dose-inhibition”, which means under low and median ENR concentrations, the epiphytic algal biomass was promoted, while under high ENR concentrations, the biomass was inhibited. This pattern was mainly attributed to the high tolerance of filamentous green algae and yellow-green algae to ENR. Very low concentrations of ENR also favored the growth of diatoms and cyanobacteria. These results demonstrate a significant alteration of epiphytic algal communities by ENR and also spark further research on the potential use of filamentous green algae for the removal of ENR in contaminated waters because of its high tolerance.

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