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.
|Title of host publication||Interactions of nutrients and toxicants in the food chain of aquatic ecosystems|
|Editors||P.R.G. Kramer, D.A. Jonkers, L. van Liere|
|Publication status||Published - 1997|
Brock, T. C. M., van den Brink, P. J., & Hartgers, E. M. (1997). Impact of community nutrient status on fate and effects of insecticides in shallow freshwater ecosystems. In P. R. G. Kramer, D. A. Jonkers, & L. van Liere (Eds.), Interactions of nutrients and toxicants in the food chain of aquatic ecosystems (pp. 55-62)