Ecological risk assessment in a tropical wetland contaminated with gasoline: Tier 1

Mendes, Maíra P.; Salomão, André Luís de Sá; Niemeyer, Júlia Carina; Marques, Márcia

doi:10.1080/10807039.2017.1294477

Cited by 14 publications

(7 citation statements)

References 39 publications

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“…In addition, as previously reported for the studied site, other possible contaminants (i.e., pesticides applied in agricultural fields, contaminants in non-treated sewage from houses) supposedly found nearby the studied area and their combined effect could be responsible for toxic responses found in samples without detectable gasoline hydrocarbons (Mendes et al 2017). Even though the toxicity found in sediment samples could not be directly related to the presence of BTEX, the wetland ecosystem should be actively monitored to detect any potential gasoline residual phase on its sediments since the contamination plume is clearly migrating towards the site.…”

Section: Ecotoxicological Loesupporting

confidence: 67%

Ecological risk assessment (ERA) based on contaminated groundwater to predict potential impacts to a wetland ecosystem

Mendes

Cunha

Santos

et al. 2020

Environ Sci Pollut Res

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To assess the ecological risk resulting from an accidental gasoline spill upstream from a wetland, groundwater and sediment sampling was carried out during two campaigns at the 48th and 52nd months after the spill had occurred. In total, 21 groundwater monitoring wells in the affected area were sampled plus an additional reference well located upstream from the accident location. Seven sediment sampling points were selected inside the wetland, plus a reference point upstream from the accident. Physicochemical parameters, BTEX (benzene, toluene, ethylbenzene, m-xylene, p-xylene and o-xylene) and metal concentrations were analysed to estimate the chemical risk. Acute (Allivibrio fischeri, Daphnia similis, Hyalella azteca) and chronic (Artemia salina and Desmodesmus subspicatus) toxicity assays were performed with groundwater and sediments elutriate to determine the ecotoxicological risk. Results from groundwater indicated an extreme chemical level of risk in14 out of 21 monitoring wells. These 14 wells also exhibited free-phase gasoline and lead (Pb) concentrations above the threshold values adopted by this study. The presence of Pb, however, could not be associated with the gasoline accident. High acute and chronic toxicities were reported for the majority of wells. Conversely, the risks associated with the sediments were considered low in most sampling points, and the ecotoxicity found could not be related to the presence of gasoline. Groundwater flow modelling results have evidenced the migration of the contamination plume towards the wetland. Thus, to prevent contamination from reaching the protected area, more effective groundwater clean-up techniques are still required.

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Section: Ecotoxicological Loesupporting

confidence: 67%

Ecological risk assessment (ERA) based on contaminated groundwater to predict potential impacts to a wetland ecosystem

Mendes

Cunha

Santos

et al. 2020

Environ Sci Pollut Res

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“…In this case, these parameters are used only for discussion purposes, both for chemical and ecological aspects (GUTIÉRREZ et al, 2015;RIBÉ et al, 2012). Other studies, in turn, uses the physical-chemical parameters as being chemical parameters, pooling them together into the Chemical Line of Evidence (MENDES et al, 2017). In the present study, we have chosen to calculate the physical-chemical parameters as chemical parameters but data was presented separately as one other line of evidence into ERA (CRÉVECOEUR et al, 2011).…”

Section: Discussionmentioning

confidence: 99%

Ecological Risk Assessment (Era) Application for the Evaluation of Impacts on Natural Aquatic Ecosystems

2019

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The present research employs the Ecological Risk Assessment (ERA) method to evaluate the probability of adverse effects in the water supply of Bom Repouso (MG), a city where the agriculture has caused an advanced degree of degradation of its sources. The methodology is based on the integration of different variables, divided into three Lines of Evidence (chemical, physical-chemical and ecotoxicological), and allows for the evaluation of risk assessment between 0.0 and 1.0 in the sampled environment. Five sampling points were evaluated in three periods, with the results varying between the four possible ratings (from low to very high), and it was not possible to identify a pattern of risk evolution between them. Thus, the method used proved to be efficient in assessing the degree of degradation of the environment, however, additional studies are required to improve this type of systemic impact assessment, based on the evaluation of the environmental degradation.

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“…For example, this was the case of groundwater (Crévecoeur et al, 2011), where LoE for ecology was substituted by physico-chemical measurements (i.e., pH, conductivity and nutrient levels), due to the impossibility to perform an ecological assessment. In another study, genotoxicity and endocrine disruption biomarkers on exposed fishes served as proxies to make up for the lack of ecological data for surface waters (Mendes et al, 2017). These examples highlight the difficulty to capture ecological features in water matrices for exploitation within an ERA framework, as opposed to landoriented approaches where plants or soil organisms can be more easily studied.…”

Section: Real Life Applications Of the Triad Approachmentioning

confidence: 99%

State of the Art of Triad-Based Ecological Risk Assessment: Current Limitations and Needed Implementations in the Case of Soil Diffuse Contamination

Grassi

Lamy

Pucheux

et al. 2022

Front. Environ. Sci.

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Soils can be sinks of pollutant mixtures, whose effects on terrestrial ecosystems are not of obvious interpretation. Risk assessment is rather codified and many approaches can be used. Nevertheless, there are still uncertainties remaining when dealing with diffuse pollution, including chronic inputs of low, sublethal, concentrations of mixtures of micropollutants. In this paper, we reviewed through a comprehensive literature analysis one of the latest promising methodologies, the triad approach, in order to understand its area of application in terrestrial ecosystems, the ways of applicability and the reported actual usage. In the case of diffuse pollution, where all the criteria of the triad approach can differ in their indication, we show that some improvements have to be made in either the chemical, ecological or ecotoxicological approaches to be able to clearly identify the risk and to address the uncertainties linked to the low, sublethal contents of contaminants.

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Ecological risk assessment in a tropical wetland contaminated with gasoline: Tier 1

Cited by 14 publications

References 39 publications

Ecological risk assessment (ERA) based on contaminated groundwater to predict potential impacts to a wetland ecosystem

Ecological risk assessment (ERA) based on contaminated groundwater to predict potential impacts to a wetland ecosystem

Ecological Risk Assessment (Era) Application for the Evaluation of Impacts on Natural Aquatic Ecosystems

State of the Art of Triad-Based Ecological Risk Assessment: Current Limitations and Needed Implementations in the Case of Soil Diffuse Contamination

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