New evidences of Roundup® (glyphosate formulation) impact on the periphyton community and the water quality of freshwater ecosystems
Argentina is the second largest world producer of soybeans (after the USA) and along with the increase in planted surface and production in the country, glyphosate consumption has grown in the same way. We investigated the effects of Roundup® (glyphosate formulation) on the periphyton colonization....
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2010
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09639292_v19_n4_p710_Vera http://hdl.handle.net/20.500.12110/paper_09639292_v19_n4_p710_Vera |
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paper:paper_09639292_v19_n4_p710_Vera2023-06-08T15:58:12Z New evidences of Roundup® (glyphosate formulation) impact on the periphyton community and the water quality of freshwater ecosystems Clear and turbid shallow lakes Glyphosate Mesocosms Periphyton Roundup® Water quality chlorophyll a fresh water glyphosate herbicide inorganic compound freshwater ecosystem glyphosate lake water mesocosm nontarget organism periphyton pollution effect water quality Argentina article colony formation cyanobacterium diatom dry weight ecosystem eutrophication macrophyte mesocosm microbial community nonhuman periphyton phytoplankton priority journal water quality Algae Argentina Biomass Chlorophyll Cyanobacteria Ecosystem Environmental Monitoring Eutrophication Fresh Water Glycine Herbicides Phosphorus Risk Assessment Time Factors Water Pollutants, Chemical Argentina Pampas algae Bacillariophyta Cyanobacteria Glycine max Argentina is the second largest world producer of soybeans (after the USA) and along with the increase in planted surface and production in the country, glyphosate consumption has grown in the same way. We investigated the effects of Roundup® (glyphosate formulation) on the periphyton colonization. The experiment was carried out over 42 days in ten outdoor mesocosms of different typology: "clear" waters with aquatic macrophytes and/or metaphyton and "turbid" waters with great occurrence of phytoplankton or suspended inorganic matter. The herbicide was added at 8 mg L-1 of the active ingredient (glyphosate) in five mesocosms while five were left as controls (without Roundup® addition). The estimate of the dissipation rate (k) of glyphosate showed a half-life value of 4.2 days. Total phosphorus significantly increased in treated mesocosms due to Roundup® degradation what favored eutrophication process. Roundup® produced a clear delay in periphytic colonization in treated mesocosms and values of the periphytic mass variables (dry weight, ash-free dry weight and chlorophyll a) were always higher in control mesocosms. Despite the mortality of algae, mainly diatoms, cyanobacteria was favored in treated mesocosms. It was observed that glyphosate produced a long term shift in the typology of mesocosms, "clear" turning to "turbid", which is consistent with the regional trend in shallow lakes in the Pampa plain of Argentina. Based on our findings it is clear that agricultural practices that involve the use of herbicides such as Roundup® affect non-target organisms and the water quality, modifying the structure and functionality of freshwater ecosystems. © 2009 Springer Science+Business Media, LLC. 2010 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09639292_v19_n4_p710_Vera http://hdl.handle.net/20.500.12110/paper_09639292_v19_n4_p710_Vera |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Clear and turbid shallow lakes Glyphosate Mesocosms Periphyton Roundup® Water quality chlorophyll a fresh water glyphosate herbicide inorganic compound freshwater ecosystem glyphosate lake water mesocosm nontarget organism periphyton pollution effect water quality Argentina article colony formation cyanobacterium diatom dry weight ecosystem eutrophication macrophyte mesocosm microbial community nonhuman periphyton phytoplankton priority journal water quality Algae Argentina Biomass Chlorophyll Cyanobacteria Ecosystem Environmental Monitoring Eutrophication Fresh Water Glycine Herbicides Phosphorus Risk Assessment Time Factors Water Pollutants, Chemical Argentina Pampas algae Bacillariophyta Cyanobacteria Glycine max |
| spellingShingle |
Clear and turbid shallow lakes Glyphosate Mesocosms Periphyton Roundup® Water quality chlorophyll a fresh water glyphosate herbicide inorganic compound freshwater ecosystem glyphosate lake water mesocosm nontarget organism periphyton pollution effect water quality Argentina article colony formation cyanobacterium diatom dry weight ecosystem eutrophication macrophyte mesocosm microbial community nonhuman periphyton phytoplankton priority journal water quality Algae Argentina Biomass Chlorophyll Cyanobacteria Ecosystem Environmental Monitoring Eutrophication Fresh Water Glycine Herbicides Phosphorus Risk Assessment Time Factors Water Pollutants, Chemical Argentina Pampas algae Bacillariophyta Cyanobacteria Glycine max New evidences of Roundup® (glyphosate formulation) impact on the periphyton community and the water quality of freshwater ecosystems |
| topic_facet |
Clear and turbid shallow lakes Glyphosate Mesocosms Periphyton Roundup® Water quality chlorophyll a fresh water glyphosate herbicide inorganic compound freshwater ecosystem glyphosate lake water mesocosm nontarget organism periphyton pollution effect water quality Argentina article colony formation cyanobacterium diatom dry weight ecosystem eutrophication macrophyte mesocosm microbial community nonhuman periphyton phytoplankton priority journal water quality Algae Argentina Biomass Chlorophyll Cyanobacteria Ecosystem Environmental Monitoring Eutrophication Fresh Water Glycine Herbicides Phosphorus Risk Assessment Time Factors Water Pollutants, Chemical Argentina Pampas algae Bacillariophyta Cyanobacteria Glycine max |
| description |
Argentina is the second largest world producer of soybeans (after the USA) and along with the increase in planted surface and production in the country, glyphosate consumption has grown in the same way. We investigated the effects of Roundup® (glyphosate formulation) on the periphyton colonization. The experiment was carried out over 42 days in ten outdoor mesocosms of different typology: "clear" waters with aquatic macrophytes and/or metaphyton and "turbid" waters with great occurrence of phytoplankton or suspended inorganic matter. The herbicide was added at 8 mg L-1 of the active ingredient (glyphosate) in five mesocosms while five were left as controls (without Roundup® addition). The estimate of the dissipation rate (k) of glyphosate showed a half-life value of 4.2 days. Total phosphorus significantly increased in treated mesocosms due to Roundup® degradation what favored eutrophication process. Roundup® produced a clear delay in periphytic colonization in treated mesocosms and values of the periphytic mass variables (dry weight, ash-free dry weight and chlorophyll a) were always higher in control mesocosms. Despite the mortality of algae, mainly diatoms, cyanobacteria was favored in treated mesocosms. It was observed that glyphosate produced a long term shift in the typology of mesocosms, "clear" turning to "turbid", which is consistent with the regional trend in shallow lakes in the Pampa plain of Argentina. Based on our findings it is clear that agricultural practices that involve the use of herbicides such as Roundup® affect non-target organisms and the water quality, modifying the structure and functionality of freshwater ecosystems. © 2009 Springer Science+Business Media, LLC. |
| title |
New evidences of Roundup® (glyphosate formulation) impact on the periphyton community and the water quality of freshwater ecosystems |
| title_short |
New evidences of Roundup® (glyphosate formulation) impact on the periphyton community and the water quality of freshwater ecosystems |
| title_full |
New evidences of Roundup® (glyphosate formulation) impact on the periphyton community and the water quality of freshwater ecosystems |
| title_fullStr |
New evidences of Roundup® (glyphosate formulation) impact on the periphyton community and the water quality of freshwater ecosystems |
| title_full_unstemmed |
New evidences of Roundup® (glyphosate formulation) impact on the periphyton community and the water quality of freshwater ecosystems |
| title_sort |
new evidences of roundup® (glyphosate formulation) impact on the periphyton community and the water quality of freshwater ecosystems |
| publishDate |
2010 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09639292_v19_n4_p710_Vera http://hdl.handle.net/20.500.12110/paper_09639292_v19_n4_p710_Vera |
| _version_ |
1768541570832793600 |