Hidrológiai Közlöny, 2013 (93. évfolyam)
2013 / 5-6. különszám - LIV. Hidrobiológus Napok előadásai
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In: Bell J.M., (ed) Proceedings of the 43rd Industrial Waste Conference, Purdue University, May 10-12, 1988. Chelsea, MI: Lewis Publishers, Inc. 101-108. Testing the effects of chlorinated hydrocarbons on composition of phytoplankton assemblages in microcosms Bácsi, I., B-Béres, V., Balogh, J., Grigorszky /., Vasas G., Szabó, L.J., Nagy, S.A.1 Abstract: The effects of three short chained chlorinated hydrocarbons (tetrachloroethane, tetrachloroethylene and trichloroethylene) on spring and summer phytoplankton communities was studied in microcosm experiments. The results show that the effects of these compounds highly depends on the composition of phytoplankton assemblages and the sensitivity of dominant species. The euglenid Trachelomonas and the diatom Cyclotella were the less sensitive genera. Green algae belonging to orders Chlorellales and Chlamydomonadales showed low sensitivity; green algae from order Sphaeropleales seemed moderately sensitive. In contrast, Cryptophytes almost totally disappeared from treated assemblages to the end of the exposure. Chlorinated hydrocarbons affect negatively the composition of phytoplankton communities, but there were more resistant species in the more diverse systems (spring assemblages in our case), this enables them to offset the functional impairment resulting from the disappearance of other species. Keywords: Chlorinated hydrocarbons, Synechococcus, oxidative stress.
