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Record number 306781
Title Impact of community nutrient status on fate and effects of insecticides in shallow freshwater ecosystems
Author(s) Brock, T.C.M.; Brink, P.J. van den; Hartgers, E.M.
Source In: Interactions of nutrients and toxicants in the food chain of aquatic ecosystems / Kramer, P.R.G., Jonkers, D.A., van Liere, L., - p. 55 - 62.
Department(s) Winand Staring Centre for Integrated Land, Soil and Water Research
Publication type Chapter in scientific book
Publication year 1997
Abstract The environmental conditions that affect fate and bio-availability of insecticides are often linked with community trophic status. An increase in adsorption of insecticides to sediments and organic matter in nutrient-loaded systems generally results in a decrease in bio-availability. By reducing arthropod populations insecticides may temporarily reduce the top-down control of algae, thereby enhancing the stimulatory effects of nutrient loading. Non-arthropod grazers of algae not susceptible to insecticides may soon take over the control (functional redundancy). Prolonged algal blooms, however, can be expected in the case of nutrient-loaded freshwater ecosystems and a frequent input of insecticides.
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