Abstract
The impact of phosphorus control on the nutrient dynamics and biological activity of Foxcote Reservoir, a small impounded reservoir operated by Anglian Water are discussed. Phosphorus precipitation using iron salts was commenced in 1981 to improve the treatability of previously algal-laden water and continued until 1994 when the reservoir was closed as a water supply source. A marked decrease in algal biomass was observed after an initial delay, which coincided with an increase in the abundance of aquatic macrophytes. There were also marked shifts in the macrophyte community during the following 10 years, with an increase in Elodea and an initial increase then decline in Chara The zooplankton community also changed with an increase in the larger bodied Daphma pulex No overall change in the rate of denitrification was observed, although patterns of silica depletion showed changes in frequency. Trends in wildfowl counts over this period reflect changes in the ecology of the reservoir.
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Bostrum B., M., Janssoon and C. Forsberg, 1982. Phosphorus release from lake sediments. Arch. Hydrobiol. 18: 5–59.
Foy, R. H., 1985. Phosphorus inactivation in a eutrophic lake by the direct addition of ferric alumninium sulphate: changes in phytoplankton populations. Freshwat. Biol. 15: 613–629.
Gulati, R. D., 1990. Structural and grazing responses of zooplankton community to biomanipulation of some Dutch water bodies. Hydrobiologia 200/201 ( Dev. Hydrobiol. 61 ): 99–118.
Hayes, C. R., R. G. Clark, R. F. Stent and C. J. Redshaw, 1984. The control of algae by chemical treatment in a eutrophic water supply reservoir. Journal of The Institution of Water Engineers and Scientists 38: 149–162.
Hosper S. H. and E. Jagman, 1990. Biomanipulation additional to nutrient control for restoration of shallow lakes in The Netherlands. Hydrobiologia 200/201 ( Dev. Hydrobiol. 61 ): 523–534.
Hutson R. A., B. S. C. Leadbetter and R. W. Sedgewick, 1987. Algal interference with water treatment processes. Progress in Phycological Research 5: 266–299.
McKinnon, S. L and S. F. Mitchell, 1994. Eutrophication and black swan Cygnus atratus Lathum) populations: tests of two simple relationships. Hydrobiologia 279/280 ( Dev. Hydrobiol. 96 ): 163–170.
Moss, B. 1990. Engineering and biological approaches to the restoration from eutrophication of shallow lakes in which aquatic plant communities are important components. Hydrobiologia 200/201 ( Dev. Hydrobiol. 61 ): 367–377.
OECD. 1982. Eutrophication of Water. Monitoring, Assessment and Control. OECD, Paris.
Ozimek T., R. D. Gulati and E. van Donk, 1990. Can macrophytes be usetul in biomanipulation of lakes? The lake Zwemlust example. Hydrobiologia 200/201 ( Dev. Hydrobiol. 61 ): 399–407.
Suter, W. 1994. Overwintering waterfowl on Swiss lakes: how are abundance and species richness influenced by trophic status and lake morphology? Hydrobiologia 279/280 ( Dev. Hydrobiol. 96 ): 1–14.
Sas, H., 1989. Lake restoration by reduction of nutrient loading. Academia Verlag, St Augustin, Germany.
Sondergaard M., E. Jeppesen, E. Mortensen, E. Dali, P. Kristensen and O. Sortkjaer, 1990. Phytoplankton biomass reduction after planktivorous fish reduction in a shallow, eutrophic lake: a combined effect of reduced internal P-loading and increased zoo- plankton grazing. Hydrobiologia 200/201 ( Dev. Hydrobiol. 61 ): 229–240.
Young, S. N., W. T. Clough, A. J. Thomas and R. Siddall, 1991. Changes in plant community at Foxcote Reservoir following use of ferric sulphate to control nutrient levels. Journal of Institute of Water and Environmental Management 2: 5–12.
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© 1999 Springer Science+Business Media Dordrecht
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Daldorph, P.W.G. (1999). A reservoir in management-induced transition between ecological states. In: Harper, D.M., Brierley, B., Ferguson, A.J.D., Phillips, G. (eds) The Ecological Bases for Lake and Reservoir Management. Developments in Hydrobiology, vol 136. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-3282-6_28
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DOI: https://doi.org/10.1007/978-94-017-3282-6_28
Publisher Name: Springer, Dordrecht
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