Occurrence and persistence of fungicides in bed sediments and suspended solids from three targeted use areas in the United States

Smalling, Kelly L.; Reilly, Timothy J.; Sandstrom, Mark W.; Kuivila, Kathryn M.

doi:10.1016/j.scitotenv.2013.01.021

Cited by 49 publications

(26 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Bed sediment samples were extracted and analyzed for 94 pesticides and pesticide degradates based on previously published methods (Smalling et al, 2013a;Hladik and McWayne, 2012). Briefly, wet sediments (10 g) were spiked with trifluralin-d 10 , ring-13 C-p,p′-DDE and phenoxy-13 C-cis-permethrin (Cambridge Isotopes, Andover, MA, USA) as recovery surrogates, homogenized with sodium sulfate and extracted using pressurized liquid extraction.…”

Section: Bed Sediment Samples For Pesticidesmentioning

confidence: 99%

See 1 more Smart Citation

Pesticide concentrations in frog tissue and wetland habitats in a landscape dominated by agriculture

Smalling

Reeves

Muths

et al. 2015

Science of The Total Environment

Self Cite

127

View full text Add to dashboard Cite

Habitat loss and exposure to pesticides are likely primary factors contributing to amphibian decline in agricultural landscapes. Conservation efforts have attempted to restore wetlands lost through landscape modifications to reduce contaminant loads in surface waters and providing quality habitat to wildlife. The benefits of this increased wetland area, perhaps especially for amphibians, may be negated if habitat quality is insufficient to support persistent populations. We examined the presence of pesticides and nutrients in water and sediment as indicators of habitat quality and assessed the bioaccumulation of pesticides in the tissue of twonative amphibian species Pseudacris maculata (chorus frogs) and Lithobates pipiens (leopard frogs) at six wetlands (3 restored and 3 reference) in Iowa, USA. Restored wetlands are positioned on the landscape to receive subsurface tile drainage water while referencewetlands receive water fromoverland run-off and shallow groundwater sources. Concentrations of the pesticides frequently detected inwater and sediment samples were not different between wetland types. The median concentration of atrazine in surface water was 0.2 μg/ L. Reproductive abnormalities in leopard frogs have been observed in other studies at these concentrations. Nutrient concentrations were higher in the restored wetlands but lower than concentrations thought lethal to frogs. Complex mixtures of pesticides including up to 8 fungicides, some previously unreported in tissue, were detected with concentrations ranging from 0.08 to 1500 μg/kg wet weight. No significant differences in pesticide concentrations were observed between species, although concentrations tended to be higher in leopard frogs compared to chorus frogs, possibly because of differences in life histories. Our results provide information on habitat quality in restored wetlands that will assist state and federal agencies, landowners, and resource managers in identifying and implementing conservation and management actions for these and similar wetlands in agriculturally dominated landscapes. RightsWorks produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted. H I G H L I G H T S• Habitat quality was similar between restored and reference wetlands in Iowa.• Complex mixtures of pesticides are detected in frog tissues (liver and whole body).• The number of fungicides (up to 8) in frog tissues is largest reported to date.• Life history has the potential to impact pesticide bioaccumulation in frogs. Habitat loss and exposure to pesticides are likely primary factors contributing to amphibian decline in agricultural landscapes. Conservation efforts have attempted to restore wetlands lost through landscape modifications to reduce contaminant loads in surface waters and providing quality habitat to wildlife. The benefits of this increased wetland area, perhaps especially for amphibians, may be negated if habitat quality is insufficient t...

show abstract

Section: Bed Sediment Samples For Pesticidesmentioning

confidence: 99%

“…Data were collected in SIM mode with each compound having one quantifier ion and 1-2 qualifier ions. MDLs for all compounds in ranged from 0.6 to 3.8 μg/kg sediment dry weight (Smalling et al, 2013a;Hladik and McWayne, 2012).…”

Section: Bed Sediment Samples For Pesticidesmentioning

confidence: 99%

Pesticide concentrations in frog tissue and wetland habitats in a landscape dominated by agriculture

Smalling

Reeves

Muths

et al. 2015

Science of The Total Environment

Self Cite

127

View full text Add to dashboard Cite

show abstract

“…Este mesmo principio ativo também foi detectado por Smalling et al em amostras de sedimentos, nas concentrações entre 2,1 e 44,5 µg kg -1 , em fazendas de pesquisa agrícola nos Estados Unidos. 42 O ponto 1, apesar de ser o ponto mais a montante, apresenta maior ocorrência e maior concentração de contaminantes. Este ponto localizado no município de Montauri possui a menor parte de seu território dentro da Bacia Hidrográfica em estudo, visto que os dados referentes às culturas e área plantada apresentadas na Tabela 1 referem-se a todo o território municipal.…”

Section: Sedimentounclassified

“…Porém, os resultados não foram semelhantes com os encontrados em outros países para os principais agrotóxicos encontrados em águas superficiais e sedimentos. Outros agrotóxicos são os mais prevalentes, como Fluameturon, Endosulfan, Piraclostrobin, Deltrametrina, 39,40,42,44 e em vários vegetais e frutas. [45][46][47] Resíduos de contaminantes provenientes de agrotóxicos também podem ser detectados na atmosfera, solo e em organismos aquáticos, devido à suas propriedades persistentes e lipofílicas.…”

Section: Sedimentounclassified

Determinação de agrotóxicos na água e sedimentos por HPLC-HRMS e sua relação com o uso e a ocupação do solo

Chiarello¹,

Graeff²,

Minetto³

et al. 2016

Quim. Nova

View full text Add to dashboard Cite

. In present times, the Brazil is in the middle of the largest pesticide consumers worldwide, which demands proper control of environmental contamination. This study evaluated herbicides, acaricide, insecticides and fungicides in water and sediment carried-out from Lageado Tacongava hydrographic basin, Rio Grande do Sul, Brazil. For analysis, a QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe), and/or SPE (Solid-Phase Extraction) using HPLC (High Performance Liquid Chromatography) with MS (Mass Detector) was optimized. As result, the Linearity R 2 > 0.99; Recuperation between 78 a 117%; and RSD < 20% for the 70 compounds simultaneously analyzed. The Acetamiprid, Azoxystrobin, Bendiocarb, Fenamidone, metribuzin, Pendimethalin, pyridaben, Thiophanate-methyl and Truflumizole found in water, and Acetamiprid, Azoxystrobin, Bendiocarb, boscalid and thiophanate-methyl in sediment, at concentrations from 0.1 µg kg -1 to 39.6 µg kg -1 . Standard of pesticide residues in water and sediment studies are needed to evaluate such contamination. Regional samplings standard, as was done here, will be useful in a future water resources contamination mapping.Keywords: pesticides; QuEChERS; HPLC-HRMS; sediment; water resources. INTRODUÇÃOA produção agrícola brasileira tem tido grande destaque em um contexto mundial. 1 O crescimento da produção é acompanhado pelo incremento da utilização de agrotóxicos, sem um controle mais efetivo do seu consumo. Isto pode implicar em um aumento dos impactos sobre os ecossistemas aquáticos e a biota do solo. 1 O Brasil é o quinto maior país em área territorial (equivalente a 47% do território sul-americano). A Organização das Nações Unidas para Agricultura e Alimentação (FAO) o considera essencialmente agrícola, apresentando área cultivada de aproximadamente 75 milhões de hectares. 2 Por sua grande extensão territorial, diferentes produtos são cultivados no país, de acordo com o clima. No Rio Grande do Sul, uma das culturas mais exploradas é a dos grãos. Estima-se que a área plantada prevista com grãos na safra de verão 2015/2016 no estado tenha ficado estável, podendo atingir 7,352 milhões de hectares, com avanço de apenas 0,74% ante 2014/15. 3 O país é um dos maiores consumidores de pesticidas, com uma forte expansão nos ultimos 40 anos, um aumento de 700%. Nos úl-timos 5 anos, uma média de 300 mil toneladas de agrotóxicos foram comercializadas. O estado do Rio Grande do Sul possui um destaque neste consumo estando na 4 o posição (12% do total) em 2015. 4 A aplicação incorreta e excessiva de pesticidas pode causar desequilíbrios ambientais com efeitos agudos e crônicos nos organismos vivos. 5 A magnitude dos efeitos depende da toxicidade da substância, da dose, do tipo de contato e do organismo. 6 Alguns destes compostos são reconhecidamente persistentes, permanecendo no ambiente por muito tempo sem sofrer alteração. 7 Assim, os dados referentes à qualidade da água nos rios brasileiros podem ser considerados críticos.O ministério da saúde definiu por meio do decreto 4.074 de 04 de janeiro...

show abstract

“…Because of application practices, the possibility exists for direct exposure to adjacent or imbedded aquatic environments by spray drift or overspray, and subsequent exposure of nontarget organisms to low concentrations of fungicides (Smalling et al 2013). Fungicides are often applied aerially, throughout the growing season, and independent of fungal presence.…”

Section: Introductionmentioning

confidence: 99%

Diet quality affects chemical tolerance in the freshwater snail Lymnaea stagnalis

Fidder

Reátegui‐Zirena

Salice

2018

Enviro Toxic and Chemistry

View full text Add to dashboard Cite

Organisms generally select high-quality diets to obtain maximal energy while devoting the least amount of time and energy. Diets, however, can vary in natural systems. In ecotoxicological testing, the effect of diet type on organismal responses to toxicants has not been explored despite the potential for dietary effects to influence toxicological endpoints. We first evaluated diet quality using growth rate and sensitivity to the fungicide pyraclostrobin of Lymnaea stagnalis fed lettuce (common laboratory diet), turtle pellets (high nutrient composition), and a combination diet of both food items. We also measured the macronutrient content of snails raised on the multiple diets to determine how diet may have impacted energy allocation patterns. Finally, we evaluated whether snails discernibly preferred a particular diet. Snails fed high-nutrient and combination diets grew larger overall than snails fed a lettuce-only diet. Snails fed the high-nutrient and combination diets, both juvenile and adult, were significantly more tolerant to pyraclostrobin than snails fed lettuce. When measured for macronutrient content, snails raised on high-nutrient and combination diets had significantly higher carbohydrate content than snails fed lettuce. Despite the strong effects of diet type, snails did not exhibit a clear diet choice in preference trials. Dietary composition clearly influences growth rate, sensitivity, and macronutrient content of Lymnaea stagnalis. These results suggest that the nutritional environment has potentially strong impacts on toxicant sensitivity. Environ Toxicol Chem 2018;37:1158-1167. © 2017 SETAC.

show abstract

Occurrence and persistence of fungicides in bed sediments and suspended solids from three targeted use areas in the United States

Cited by 49 publications

References 29 publications

Pesticide concentrations in frog tissue and wetland habitats in a landscape dominated by agriculture

Pesticide concentrations in frog tissue and wetland habitats in a landscape dominated by agriculture

Determinação de agrotóxicos na água e sedimentos por HPLC-HRMS e sua relação com o uso e a ocupação do solo

Diet quality affects chemical tolerance in the freshwater snail Lymnaea stagnalis

Contact Info

Product

Resources

About