Occurrence, distribution, and fate of pesticides in an intensive farming region in the Brazilian semi-arid tropics (Jaguaribe River, Ceará)

Gama, Allyne F.; Cavalcante, Rivelino M.; Duaví, Wersângela C.; Silva, Vitor P. A.; Nascimento, Ronaldo F.

doi:10.1007/s11368-016-1597-9

Cited by 19 publications

(5 citation statements)

References 41 publications

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“…However, in order to understand the resultant risks to environment and population health requires improvement in existing knowledge with regards to the fate of herbicides residues in ambient water bodies. The ability of these compounds to accumulate in the environment and their toxicity to aquatic lives, humans, and wildlife is a concern (Amweg et al, 2006;Parsons et al, 2009;Buah-Kwofie and Humphries, 2017;Gama et al, 2017;Morales et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…The adverse impacts of storm water runoff, and urban and agricultural herbicides on threatened Delta Smelt (Hypomesus transpacificus) and larvae of Sacramento splittail (Pogonichthys macrolepidotus) is reported (Teh et al, 2005;Weston et al, 2014). The increased levels of herbicides in ambient water bodies including OCPs, which were banned decades ago, and the accumulation of herbicides in predator and benthic fish species poses a potential health risks to human consumers and fish predators (Abrantes et al, 2010;Net et al, 2015;Gama et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

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Assessing Glyphosate and Fluridone Concentrations in Water Column and Sediment Leachate

Pandey

Caudill

Lesmeister³

et al. 2019

Front. Environ. Sci.

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Purpose: In recreational water bodies, herbicides are widely used for controlling unwanted weeds, and impacts of herbicide residues on health risks to aquatic ecosystem is a serious concern. This study was aimed to improve the existing understanding of the deposition of herbicides from water column to bed sediment and leachate of herbicides from bed sediment to water column. We investigated the attachment of two herbicides with sediment and release from sediment: (1) Glyphosate; and (2) Fluridone. The goal of this study was to determine the deposition and release of Glyphosate and Fluridone in bed sediment of the Sacramento-San Joaquin River Delta.Materials and Methods: Field sampling was performed to collect water and sediment samples from Sacramento-San Joaquin River Delta. Bottom dredge sampler was used for collecting sediment samples and horizontal water bottle sampler was used for collecting water samples. A series of experiments were conducted to determine the attachment and release of Fluridone and Glyphosate from sediment at a different level of initial concentrations. For analyzing Fluridone and Glyphosate in sediment leachate and water, samples were processed using enzyme-linked immunosorbent assay (ELISA) based method.Results and Discussion: Observations showed that proportions of Glyphosate concentrations in water were higher than Fluridone concentrations in water, when both herbicides were inoculated in water in same quantity. On the contrary, the concentrations of Fluridone in sediment-bound leachate were higher than Glyphosate concentrations in sediment-bound leachate, regardless of the initial concentrations. Fluridone and Glyphosate concentrations in water column samples differed significantly (p < 0.05) over the time even initial concentrations of these herbicides were kept similar, which indicates that Fluridone interaction with water column was considerably different than the interaction of Glyphosate with the water column. Pandey et al. Herbicide Concentration in Water and Sediment LeachateConclusions: Bed sediment can be an important sink and source for release of Fluridone and Glyphosate from bed sediment to the water column of an ambient water body. Significant concentrations of herbicides were deposited in bed sediment of Sacramento-San Joaquin Delta, and eventually the high concentrations of herbicides were observed in sediment leachate. Improved understanding of this important release pathway can provide much needed information to adequately address the impacts of particle attached herbicides on aquatic and ecological environment of a water body.Keywords: fluridone and glyphosate in ambient water, particle attached herbicides, herbicides leachate from sediment, sediment and water column interaction, deposition and resuspension

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Assessing Glyphosate and Fluridone Concentrations in Water Column and Sediment Leachate

Pandey

Caudill

Lesmeister³

et al. 2019

Front. Environ. Sci.

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“…In EJR, levels of Cu (10 -20 µg g -1 ) and Hg (0.7 -27.9 ng g -1 ) were measured in sediments (Lacerda et al 2009. Moreover, the EJR basin comprises the major agriculture zone of the state, where Gama et al (2013) detected 201 types of highly toxic pesticides, with 151 active principles in estuarine region, as well as six herbicides (alachlor, bromacil, ethalfluralin, fluridone, tebuthiuron, and norflurazona banned compound) in levels ranging from 111.43 to 419.35 ng g -1 (Gama et al 2017). In another study, organochlorine pesticides were reported in levels ranging from 5.09 and 154.43 ng•g −1 (Oliveira et al 2016).…”

Section: Study Areasmentioning

confidence: 99%

“…Estuarine tropical ecosystems are particularly vulnerable to the contamination due to their natural complex dynamics under different river and tidal fluxes which favors the incorporation of contaminants into bottom sediments (Duaví et al 2015, Gama et al 2017, so sediments of these areas can become a sink for hydrophobic environmental mutagens and secondary sources of xenobiotics into aquatic ecosystems, producing risks of lethal and sublethal effects in biota, especially the benthic fauna (Chen & White 2004, Burton & Johnston 2010. The chronic effects represent the great impairment to the biota of polluted estuaries, therefore, in the last decades, environmental biomonitoring programs have included the evaluation of the health of organisms and/or communities to establish the environmental quality and possible ecological risks, since damage can occur at all levels of biological organization (Cajaraville et al 2000, Van der Oost et al 2003, Fent 2004, Katsumiti et al 2009).…”

Section: Introductionmentioning

confidence: 99%

Piscine micronucleus assay and the evidence of environmental degradation: the case of catfish from Brazilian tropical estuaries / Bioensaio de micronúcleo em peixes e evidências de degradação ambientai: o caso dos bagres de estuários tropicais brasileiros

Santana

Abreu

Abessa

2020

BJAER

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“…These favorable conditions are associated with soil geomorphological position, geology, rain seasonality, and fluvial systems (Palmer, 2013). Soil analyses can also contribute to identifying anthropogenic sources of pollutants, particularly herbicides used in agriculture (Gama et al, 2017) and by reconstruction of climate changes recorded in sedimentation patterns caused by alterations in river course and discharge (Damm and Hagedorn, 2010;Celarino and Ladeira, 2017;Bliedtner et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Alluvial soil formation in the plains of northeastern Brazil

Cipriano-Silva

Valladares

Azevedo

et al. 2020

Revista Brasileira De Ciência Do Solo

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Soils in alluvial plains of the lower course of the Acaraú River, Ceará State, Brazil, are weakly developed and have a complex distribution in the landscape. This study reports the pedogenic characterization of such soils in an effort to understand their formation. Soil pits were opened in four representative sites, profile morphology was described, and soil samples were collected for chemical, physical, mineralogical, and micromorphological analyses. All profiles had weak pedogenic development, as inferred from their morphological characteristics, lack of B horizon, and high silt/clay ratio. Organic carbon and particle size distributions were heterogeneous in Fluvisol, Planosol, and Solonchak, in agreement with their sedimentary nature. Intrinsic characteristics of each profile indicated variations in pedogenic processes related to depositional conditions, which, in turn, were determined by the alluvial nature of sediments and water table dynamics. Consequently, Fluvisols at higher elevations showed reduced pedogenic development. In adjacent areas, Planosols showed pores filled with clay minerals and a texture gradient, indicative of past lessivage. Vertisol was identified in small depressions and exhibited intense pedoturbation and high sodium concentration in deep layers. Solonchak had a high degree of hydromorphism, high sodium concentration, and high electrical conductivity. The distinct pedogenesis of alluvial plain soils in Northeastern Brazil is evidenced by their morphological, chemical, and physical properties.

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Occurrence, distribution, and fate of pesticides in an intensive farming region in the Brazilian semi-arid tropics (Jaguaribe River, Ceará)

Cited by 19 publications

References 41 publications

Assessing Glyphosate and Fluridone Concentrations in Water Column and Sediment Leachate

Assessing Glyphosate and Fluridone Concentrations in Water Column and Sediment Leachate

Piscine micronucleus assay and the evidence of environmental degradation: the case of catfish from Brazilian tropical estuaries / Bioensaio de micronúcleo em peixes e evidências de degradação ambientai: o caso dos bagres de estuários tropicais brasileiros

Alluvial soil formation in the plains of northeastern Brazil

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