Freshwater periphyton response to technical-grade and two commercial formulations of glyphosate

Authors

  • Daniela Gonzalez Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Ecología, Genética y Evolución.
  • Ángela Juárez Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Biodiversidad y Biología Experimental. CONICET-Universidad de Buenos Aires, Instituto de Biodiversidad y Biología Experimental y Aplicada (IBBEA).
  • C. Pamela Krug UNSAM, CONICET, Instituto de Ingeniería e Investigación Ambiental (3iA).
  • Marina Santos Instituto Nacional de Tecnología Industrial (INTI), San Martín.
  • M. Solange Vera Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Ecología, Genética y Evolución. CONICET-Universidad de Buenos Aires, Instituto de Ecología, Genética y Evolución de Buenos Aires (IEGEBA). Buenos Aires, Argentina.

DOI:

https://doi.org/10.25260/EA.19.29.1.0.816

Abstract

Glyphosate is the most widely used herbicide worldwide. It may reach water bodies and affect microbial communities. We compared the effects of two commercial formulations and technical-grade glyphosate on a freshwater periphytic community. A laboratory bioassay was carried out with four treatments: technicalgrade glyphosate acid, Glifosato II Atanor®, Roundup Max®, at a concentration of 3 mg active ingredient/L, and Control. At 2, 5 and 9 days after herbicide application, pigments concentration, dry weight, ash-free dry weight, and periphytic algal density were determined. An increase of Cyanobacteria and a decrease of Chlorophyta and Bacillariophyta abundances were registered in all treatments with the herbicide. This effect was greater when Roundup Max® and Glifosato II Atanor® were added, and was lower with technical-grade glyphosate, suggesting that additives in the commercial formulations may enhance glyphosate effects.

https://doi.org/10.25260/EA.19.29.1.0.816

Author Biographies

Daniela Gonzalez, Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Ecología, Genética y Evolución.


M. Solange Vera, Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Ecología, Genética y Evolución. CONICET-Universidad de Buenos Aires, Instituto de Ecología, Genética y Evolución de Buenos Aires (IEGEBA). Buenos Aires, Argentina.

Facultad de Ciencias Exactas y Naturales, Departamento de Ecología, Genética y Evolución

CONICET-Universidad de Buenos Aires, Instituto de Ecología, Genética y Evolución de Buenos Aires (IEGEBA)

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Respuesta del perifiton de agua dulce al glifosato grado-técnico y dos formulados comerciales

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Published

2019-02-23

How to Cite

Gonzalez, D., Juárez, Ángela, Krug, C. P., Santos, M., & Vera, M. S. (2019). Freshwater periphyton response to technical-grade and two commercial formulations of glyphosate. Ecología Austral, 29(1), 020–027. https://doi.org/10.25260/EA.19.29.1.0.816

Issue

Vol. 29 No. 1 (2019): April 2019. Pages 001-163

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Articles

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Copyright (c) 2019 Daniela Gonzalez, Ángela Juárez, C. Pamela Krug, Marina Santos, M. Solange Vera

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