Abstract
The effect of formulated aminocarb (Matacil®) an insecticide, on the viability of algal communities in a New Brunswick (Canada) pond was investigated by using the carbon-14 assimilation method. The concentration at which there was a 50% reduction of carbon assimilation (EC50) was 0.98 ppm, calculated on the basis of the aminocarb component. All detectable carbon uptake by the algae had ceased at a concentration of 1.5 ppm aminocarb. Algal production was found to recover within 72 hr from formulated aminocarb application at concentrations up to 2.24 ppm. Recovery was probably due to the existence of algal cells tolerant to this pesticide. Matacil® concentrations have been reported in terms of the aminocarb component and does not imply that aminocarb is in itself causing disruption of algae.
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Elner, J.K., Wildish, D.J. & Johnston, D.W. Carbon-14 assimilation by algal communities of oligotrophic ponds treated with formulated aminocarbs. Arch. Environ. Contam. Toxicol. 11, 675–679 (1982). https://doi.org/10.1007/BF01059154
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DOI: https://doi.org/10.1007/BF01059154