Ecological risk assessment of glyphosate in surface water when it is used to control floating aquatic macrophytes

Maria, Marina Andrada; Castro, Samuel Rodrigues; Lange, Liséte Celina; Siuves, Cláudia L. F.; Soares, Aylton Carlos

doi:10.1590/0001-3765202020180445

Cited by 7 publications

(3 citation statements)

References 8 publications

(2 reference statements)

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“…É interessante ressaltar que os herbicidas à base de glifosato também são aplicados diretamente no ambiente aquático, para controle de plantas subaquáticas e aquáticas indesejáveis, como Eichhornia crassipes Mart. (Solms) (Maria et al, 2020). Nos Estados Unidos, Roundup e outras formulações foram proibidos para aplicação nestes ambientes, por sua toxicidade variável para a fauna aquática (Solomon & Thompson, 2003).…”

Section: Verde Intensounclassified

Glifosato e o uso de pesticidas em Mato Grosso do Sul: riscos relacionados aos recursos hídricos

Garcia

Oliveira

Matias

2022

RSD

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Mato Grosso do Sul possui uma economia voltada para o agronegócio, ocupando o 9º lugar entre os estados agrícolas do país. Os impactos decorrentes do crescimento desta atividade representam um risco para as áreas úmidas. Deste modo objetivou-se realizar um levantamento dos pesticidas mais utilizados e os problemas relacionados ao produto mais vendido, o glifosato. Foi realizada uma pesquisa bibliográfica integrativa nas bases de dados Anvisa, BIREME, IBAMA, LILACS, MEDLINE, Scielo, Scopus e TOXLINE, usando diferentes combinações de termos referente à temática. Dos dez pesticidas mais utilizados, em primeiro lugar está o herbicida glifosato, que quando associado aos adjuvantes, penetra com mais facilidade nas membranas celulares das plantas daninhas, promovendo sua eliminação. Os compostos resultantes de sua degradação e os adjuvantes utilizados trazem riscos ambientais, devido seus efeitos duradouros e à dispersão ambiental, transformando-se em uma ameaça, principalmente aos corpos hídricos, receptáculo natural dos produtos utilizados. Monitorar o nível de contaminação nas águas superficiais é uma necessidade, permitindo construir um espectro dos riscos relacionados à atividade agrícola e os possíveis impactos ambientais na cadeia trófica dos ambientes aquáticos.

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Section: Verde Intensounclassified

Glifosato e o uso de pesticidas em Mato Grosso do Sul: riscos relacionados aos recursos hídricos

Garcia

Oliveira

Matias

2022

RSD

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“…Thus, considering the potential ecological risk of glyphosate-based herbicides in continental aquatic environments (Maria et al, 2020), the present study aimed to evaluate the phytotoxic effects of Roundup ® and AMPA on the aquatic macrophyte E. densa under controlled conditions. For 7 days, samples of E. densa were exposed to three nominal concentrations of Roundup ® , 0.28 mg/L, 3.5 mg/L, and 6 mg/L, and to a nominal concentration of 0.03 mg/L of AMPA in a semi-static test.…”

Section: Introductionmentioning

confidence: 99%

Effect of glyphosate-based herbicides on the photosynthetic responses of the macrophyte Egeria densa Planch. from topical lotic ecosystems

Diagonel¹,

Carriel²,

Oliveira³

et al. 2022

Limnetica

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Effect of glyphosate-based herbicides on the photosynthetic responses of the macrophyte Egeria densa Planch. from topical lotic ecosystemsThe effects of pesticide pollution on eco-physiological responses in primary producers are understudied. To partly overcome this gap, this study evaluated the effects of a glyphosate-based herbicide, Roundup ® (three nominal concentrations: 0.28 mg/L [Treatment T0.28]; 3.5 mg/L [T3.5]; and 6 mg/L [T6]), and its main degradation product, aminomethylphosphonic acid (AMPA) (0.03 mg/L [T0.03]), on the photosynthetic responses of an aquatic macrophyte species, Egeria densa Planch. The net photosynthetic rate (NPR) and dark respiration rate (DRR) were evaluated by the dissolved oxygen evolution method, while some PSII performance parameters were measured by a Chl-a fluorescence-based method. Additionally, the chlorophyll a content was measured. The experimental data showed that E. densa had significant losses in photosynthetic efficiency under Roundup ® and AMPA exposure, with reductions in the NPR (reduction of -61 % for T3.5; -90 % for T6; and -161 % for T0.03, compared to control) and chlorophyll a content (-82 % for T0.28, -79 % for T3.5, -82 % for T6, and -28 % for T0.03) and increases in the DRR (+150 % for T3.5, +130 % for T6, and +271 % for T0.03). The results from the Chl-a fluorescence measurements registered statistically significant differences between the Roundup ® treatments and the control group for the effective quantum yield (+56 % for T0.28, +43 % for T3.5, and +56 % for T6) and for non-photochemical extinction (+67% for T0.28, +73 % for T3.5, and +59 % for T6). Taken together, the findings of the experiments with E. densa indicate that the negative effects from the glyphosate-based herbicide Roundup ® on primary producers might be common and widespread in tropical and subtropical aquatic environments in Brazil.

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“…However, it is estimated that around 5.10 6 L of GLYP has been still circulating during the last past year in Vietnam [12] . This raises the possibilities of herbicide residues maintaining and occurring in the natural water environment after they were applied for weed treatment [13][14][15] . To access very low concen-tration especially for drinking water (0.1 μg/L) [16] following the maximum residue thresholds of GLYP in the European Union, it is therefore essential to conduct research studies based on an accurate and sensitive analytical method to detect and quantify these compound in the water environment.…”

Section: Introductionmentioning

confidence: 99%

One-step purification/extraction method to access glyphosate, glufosinate, and their metabolites in natural waters

Chu

et al. 2021

Journal of Chromatography A

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Ecological risk assessment of glyphosate in surface water when it is used to control floating aquatic macrophytes

Cited by 7 publications

References 8 publications

Glifosato e o uso de pesticidas em Mato Grosso do Sul: riscos relacionados aos recursos hídricos

Glifosato e o uso de pesticidas em Mato Grosso do Sul: riscos relacionados aos recursos hídricos

Effect of glyphosate-based herbicides on the photosynthetic responses of the macrophyte Egeria densa Planch. from topical lotic ecosystems

One-step purification/extraction method to access glyphosate, glufosinate, and their metabolites in natural waters

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