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标题：Effects of Ambient Ultraviolet Radiation on Littoral Periphyton: Biomass Accrual and Taxon-Specific Responses
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作者：Steven N. Francoeur ; Rex L. Lowe
期刊名称：Journal of Freshwater Ecology
印刷版ISSN：0270-5060
电子版ISSN：2156-6941
出版年度：1998
卷号：13
期号：1
页码：29-37
DOI：10.1080/02705060.1998.9663588
出版社：Taylor & Francis
摘要：Ultraviolet (UV) radiation levels were manipulated in the littoral zone of a low-elevation, mid-latitude glacial lake. Benthic algal biomass accrual was significantly inhibited by ambient levels of W radiation early in colonization, but after 45 days of accumulation, the biomass of W-exposed and W-shielded algal communities did not differ significantly. Algal taxa differed in their sensitivity to UV radiation. Cell densities of Synedra ulna, S. radians, Cyclotella comensis, and the Epitherniaceae were significantly reduced by ambient UV radiation. Achnanthidium minutissimum appeared to be stimulated by exposure to UV radiation. Differential responses of diatom taxa may have important implications for littoral zone food webs.