Abstract
Bioassays with UV-irradiated surface waters from two humic localities revealed a consistent pattern with phytoplankton production being stimulated at moderate doses (1.1.–5.4 J cm−2, 312 nm), but with a transition to severe growth inhibition at increasing doses (>10 J cm−2). Phytoplankton (Selenastrum capricornutum) was inoculated after the irradiation treatment, and the observed growth response gave support to the hypothesis of long-lasting algicidal effects induced by UV-radiation. High UV-doses apparently also liberated nutrients and metals (Al) complexed by humus. Since the applied UV312-doses corresponded to mid-summer solar intensity, the results suggest both chemical and ecological implications, and that these effects have a non-linear response on UV-dose. Conversely no effects were detected on dark respiration or during corresponding bioassays with the crustacean zooplankton Daphnia magna.
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References
Cooper, W. J., Zika, R. G., Petasne, R. G., and Fisher, A. M.: 1989, Sunlight-induced Photochemistry of Humic Substances in Natural waters: Major Reactive Species, Advances in Chemistry, Series 219.
DeHaan, H.: 1993, Limnol. Oceanogr. 38, 1072–1076.
Gjessing, E. T. and Lällqvist, T.: 1991, Wat. Res. 25, 491.
Halliwell, B. and Gutteridge, J. M. C.: 1989, Free Radicals in Biology and Medicine, Clarendon Press, Oxford.
Havas, M.: 1985, Can. J. Fish. Aquat. Sci. 42, 1741.
Havens, K. E. and Heath, R. T.: 1989, Environmental Pollution 62, 195.
Hessen, D. O.: 1994, Arch. Hydrobiol. (in press).
Hessen, D. O., Andersen, T., and Lyche, A.: 1990, Limnol. Oceanogr. 35, 84.
Hobæk, A. and Raddum, G.: 1980, Zooplankton Communities in Acidified Lakes in South Norway, SNSF-project, Oslo-Ås, Rep. 75/80.
Jones, R. I., Salonen, K., and De Haan, H.: 1988, Freshw. Biol. 19, 357.
Lund, V. and Hongve, D.: 1993, Water Res., (in press).
Palenik, B., Price, N. M., and Morel, F. M. M.: 1991, Env. Pollut. 70, 117.
Røgeberg, E. S. J. and Henriksen, A.: 1985, Vatten 41, 48.
Skogheim, O. K., Rosseland, B. O., Hoell, E., and Kroglund, F.: 1987, Effects of Humic Acids on Acute Aluminum Toxicity on Smolts of Atlantic Salmon, (Salmo salar L.) in Acid Softwater. In Rosseland, B. O. and Skogheim, O. K., Acid Soft Water and Neutralization: Effects on Fish Physiology, Fish Toxicity and Fish Populations, Dr. phill. thesis, Univ. Oslo.
Skulberg, O. M. and Skulberg, R.: 1990, Research with Algal Cultures — NIVA's Culture Collection of Algae. NIVA-report ISBN 82-551743-6.
Stebbing, A. R. D.: 1992, Science of the Total Environment 22, 213.
Wolf, C. M. J., Kaimans, M. T. H., and van der Heijde, H. B.: 1981, Chemosphere 10, 59.
Zepp, R. G., Wolfe, N. L., Baughman, G. L., and Hollis, R. C.: 1977, Nature 267, 421.
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Hessen, D.O., Van Donk, E. Effects of UV-radiation of humic water on primary and secondary production. Water Air Soil Pollut 75, 325–338 (1994). https://doi.org/10.1007/BF00482944
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DOI: https://doi.org/10.1007/BF00482944