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- W2023671257 abstract "The phycoperiphyton on Perspex slides is investigated after an exposure for four weeks at six stations in the upper course of the River Wye System from June 1979 to June 1981. The pigment contents were between 0.1 and 48 mg/m2 chlotophyll-a as well as 0.01 and 18 mg/m2 phaeophytin with a unimodal or bimodal annual variation (minima in winter, maxima in April and July). The biomass was between 55 and 11,000 cells/cm2 and is closely correlated with chlorophyll in the annual variation. The algal community colonizing the artificial substrate shows only a very slight similarity to that on the natural stones of the water. The SØRENSEN index lies between 0.1 and 0.7, the biomass on the artificial substrate amounts to only 0.7… 0.01 ‰, the chlorophyll quantity only 0.5… 0.007‰, the phaeophytin quantity only 1… 0.003‰ of the values on the natural stones. Therefore, the periphyton on artificial substrates represents only a more or less restricted selection of the real natural phycoperiphyton. At four of the six stations, biomass and chlorophyll are positively correlated with each other and with temperature and phosphorus concentration and negatively correlated with flow, current velocity, oxygen concentration, hardness and nitrate concentration." @default.
- W2023671257 created "2016-06-24" @default.
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- W2023671257 date "1985-01-01" @default.
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- W2023671257 title "Phycoperiphyton Development on an Artificial Substrate in the River Wye System, Wales, U. K. Part 1: Biomass Variation" @default.
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- W2023671257 doi "https://doi.org/10.1002/aheh.19850130303" @default.
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