Environmental risk assessment of pesticides in tropical terrestrial ecosystems: Test procedures, current status and future perspectives

Daam, Michiel A.; Chelinho, Sónia; Niemeyer, Júlia Carina; Owojori, Olugbenga J.; Silva, P. Mangala C.S. De; Sousa, José Paulo; Gestel, C.A.M. van; Römbke, Jörg

doi:10.1016/j.ecoenv.2019.06.038

Cited by 93 publications

(56 citation statements)

References 135 publications

(300 reference statements)

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“…A representative half-life in North American and European soils is 30 days with values ranging between 9 and 163 days [ 38 , 39 ]. Temperature, humidity, aerobic microorganisms and plants are associated with shorter degradation time and probably contribute to the shorter half-lives reported in some tropical settings [ 35 , 40 , 41 ]. Lambda-cyhalothrin is not considered to be absorbed by the roots of terrestrial plants because it strongly binds to soil.…”

Section: Methodsmentioning

confidence: 99%

Impact of outdoor residual spraying on the biting rate of malaria vectors: A pilot study in four villages in Kayin state, Myanmar

et al. 2020

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Outdoor and early mosquito biters challenge the efficacy of bed-nets and indoor residual spraying on the Thailand-Myanmar border. Outdoor residual spraying is proposed for the control of exophilic mosquito species. The objective of this study was to assess the impact of outdoor residual spraying on the biting rate of malaria vectors in Kayin state, Myanmar. Outdoor residual spraying using lambda-cyhalothrin was carried out in two villages in December 2016 (beginning of the dry season) and two villages were used as a control. Malaria mosquitoes were captured at baseline and monthly for four months after the intervention using human-landing catch and cow-baited trap collection methods. The impact of outdoor residual spraying on human-biting rate was estimated with propensity score adjusted generalized linear mixed-effect regressions. At baseline, mean indoor and outdoor human-biting rate estimates ranged between 2.12 and 29.16 bites /person /night, and between 0.20 and 1.72 bites /person /night in the intervention and control villages respectively. Using model output, we estimated that human-biting rate was reduced by 91% (95%CI = 88–96, P <0.0001) immediately after outdoor residual spraying. Human-biting rate remained low in all sprayed villages for 3 months after the intervention. Malaria vector populations rose at month 4 in the intervention villages but not in the controls. This coincided with the expected end of insecticide mist residual effects, thereby suggesting that residual effects are important determinants of intervention outcome. We conclude that outdoor residual spraying with a capsule suspension of lambda-cyhalothrin rapidly reduced the biting rate malaria vectors in this area where pyrethroid resistance has been documented.

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Section: Methodsmentioning

confidence: 99%

Impact of outdoor residual spraying on the biting rate of malaria vectors: A pilot study in four villages in Kayin state, Myanmar

et al. 2020

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“…In this case, the use of pesticides is directly related to these preventive measures. Despite the positive effects of disease and pest control, the use of pesticides causes environmental degradation, including the contamination of soil and water bodies [7].…”

Section: Introductionmentioning

confidence: 99%

Using BiVO4/CuO-Based Photoelectrocatalyzer for 4-Nitrophenol Degradation

et al. 2020

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The present work reports the degradation of 4-nitrophenol using BiVO4/CuO hybrid material synthesized by the precipitation of BiVO4 in the presence of CuO. Morphological and structural characterizations were performed using X-ray diffraction and scanning electronic microscopy coupled to energy dispersive X-ray spectroscopy. Through the calculation of the Kubelka–Munk function applied to diffuse reflectance spectrophotometry data, the hybrid material presented absorption edge of 1.85 eV. The formation of p-n heterojunction between BiVO4 and CuO renders the hybrid material suitable for the construction of a photoanode employed in hydroxyl radical generation. UV–vis spectrophotometry and high-performance liquid chromatography experiments were performed in order to monitor the degradation of 4-nitrophenol and the formation of secondary products. Additional information regarding the hybrid material was obtained through ion chromatography and total organic carbon analyses. The application of BiVO4/CuO-based photocatalyzer led to a 50.2% decrease in total organic carbon after the degradation of 4-nitrophenol. Based on the results obtained in the study, BiVO4/CuO has proved to be a promising material suitable for the removal of recalcitrant compounds in water treatment plants.

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“…The fate and toxicity of pesticides such as imidacloprid depend on the soil organic matter content, soil texture, pH, CEC, and biological activity and have been influenced by changes in temperature and precipitation regimes (Daam et al., 2019; Domene et al., 2012; Pisa et al., 2014; Simon‐Delso et al., 2014). The predicted changes in precipitation patterns and, consequently, decreases in soil moisture may represent threats to edaphic populations, especially when associated with soil contamination by pesticides (Bandow et al., 2014a, 2014b, 2016; Hackenberger et al., 2018; Lima et al., 2011; Ogungbemi & Van Gestel, 2018).…”

Section: Discussionmentioning

confidence: 99%

Toxicity of imidacloprid to collembolans in two tropical soils under different soil moisture

et al. 2020

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Shifts in precipitation regimes due to the predicted climate changes can alter the water content in tropical soils and, consequently, may influence the toxicity of pesticides to soil fauna. This study assessed the influence of soil moisture content on the toxicity of the insecticide imidacloprid to the collembolans Folsomia candida in two tropical soils and evaluated the risk of this active ingredient for this species in the soils tested through the toxicity exposure ratio approach. Acute and chronic toxicity tests with F. candida were performed using an Entisol and an Oxisol. The soils were spiked with increasing imidacloprid concentrations while simulating normal water availability (60% of the water holding capacity [WHC]) and water restriction (30 or 45% WHC) for the tests. In the Oxisol, the reduction of soil moisture content significantly increased the toxic effects of imidacloprid on F. candida's survival (LC 50 at 45% WHC = 23.8 vs. LC 50 at 60% WHC >64 mg kg −1) and reproduction (effective concentration causing reductions in species reproduction of 50% [EC 50 ] at 45% WHC = 0.32 vs. EC 50 at 60% WHC = 2.83 mg kg −1), but in the Entisol no clear influence of the soil moisture on the toxicity of imidacloprid for collembolans was found. A significant risk for F. candida was observed in the Oxisol only when in water restriction, whereas in the Entisol it occurred regardless of soil moisture, suggesting that the imidacloprid hazard and risk for F. candida may be increased if soil moisture decreases due to climate changes, depending on the soil type.

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Environmental risk assessment of pesticides in tropical terrestrial ecosystems: Test procedures, current status and future perspectives

Cited by 93 publications

References 135 publications

Impact of outdoor residual spraying on the biting rate of malaria vectors: A pilot study in four villages in Kayin state, Myanmar

Impact of outdoor residual spraying on the biting rate of malaria vectors: A pilot study in four villages in Kayin state, Myanmar

Using BiVO4/CuO-Based Photoelectrocatalyzer for 4-Nitrophenol Degradation

Toxicity of imidacloprid to collembolans in two tropical soils under different soil moisture

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