Priority substances of the European Water Framework Directive: analytical challenges in monitoring water quality

Coquery, Marina; Morín, Anne; Becue, A.; Lepot, B.

doi:10.1016/j.trac.2004.11.004

Cited by 114 publications

(50 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Since 2004, PBDEs are banned in Europe and listed as priority substances within the European Union Water Frame Work Directive (Coquery et al 2005), and, in 2009, the Stockholm Convention on Persistent Organic Pollutants included PBDEs as xenobiotics that can cause risk to human health and to the environment, thus toxicity evaluation of these compounds is necessary. Unfortunately, the release of PBDEs in ecosystems continues due to their presence in products currently in use and new products manufactured using recycled PBDE-containing material (La Guardia et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Changes in antitoxic defense systems of the freshwater amphipod Gammarus pulex exposed to BDE-47 and BDE-99

2015

View full text Add to dashboard Cite

Polybrominated diphenyl ethers (PBDEs) are emerging pollutants widely distributed in aquatic environment. Although the bioaccumulation of this compound has been well studied, few studies have investigated their impacts on antitoxic systems of invertebrates, considering both genders. Here, we have evaluated the effects of BDE-47 and BDE-99 congeners on the antitoxic defence systems of the freshwater amphipod Gammarus pulex, and especially on the multixenobiotic resistance (MXR) activity, as well as the activities of two antitoxic enzymes, the glutathione-S-transferase (GST) and the glutathione peroxidases (GPx). Results revealed that BDE-47 and BDE-99 have inhibited the MXR activity whatever the gammarid gender, which could lead to a reduction of the pollutant elimination from the organism. In addition, a gender-biased response and a congener-biased effect on the antitoxic enzymes activities were observed. Indeed, both BDE congener exposures increased the GST activity in males, whereas in females, only BDE-99 congener modified this activity by decreasing it. On the contrary, BDE exposures did not impact the GPx activity in females, while in males BDE-99 has increased it. Results of the present study highlight that a PBDE exposure at 0.1 lg L -1 modify antitoxic enzymes activities differently according to gender, which could lead to a change in G. pulex sensitivity on the long term. Finally, this work confirms the ecotoxicological implication of gender in the pollutant toxicity assessment, in order to evaluate impact on populations.

show abstract

Section: Introductionmentioning

confidence: 99%

Changes in antitoxic defense systems of the freshwater amphipod Gammarus pulex exposed to BDE-47 and BDE-99

2015

View full text Add to dashboard Cite

show abstract

“…Since 2004, PBDEs are banned in Europe and listed as Priority Substances within the European Union Water Frame Work Directive (Coquery et al, 2005). Unfortunately, the release of PBDEs in ecosystems continues due to their presence in products currently in use and new products manufactured using recycled PBDE-containing material (La Guardia et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Effects of two PBDE congeners on the moulting enzymes of the freshwater amphipod Gammarus pulex

Gismondi

Thomé

2014

Environmental Pollution

View full text Add to dashboard Cite

a b s t r a c tPolybrominated diphenyl ethers (PBDEs) are abundant in aquatic environment. However, only few studies have investigated their impacts on freshwater invertebrates. This work aimed to study the effects of BDE-47 and BDE-99 congeners on the chitobiase and chitinolytic enzymes activities of the freshwater amphipod Gammarus pulex, according to gender, PBDE concentration and time of exposure. In addition, the bioaccumulation of BDE-47 and BDE-99 were measured. Results revealed that females have bioaccumulated more PBDE than males, and BDE-99 was more accumulated than BDE-47. PBDE exposures for 96 h have caused chitobiase and chitinolytic enzymes inhibition. This study not only indicate the importance of taking into account various confounding factors (gender, congeners, concentration) to understand PBDE effects, but underline also disruptions of molting enzymes activities. These disturbances suggest effects on the gammarid development and reproduction, and consequently effects on the gammarid population, and on a larger scale, a dysfunction of the ecosystem.

show abstract

“…In accordance with Article 16 of the WFD, the European Union drawn up a list of 33 priority substances representing a significant risk to or via the aquatic environment. Most of these substances are synthetic contaminants, including pesticides (Coquery et al, 2005). Nearly all of the pesticides listed have since then been prohibited for use in several European states.…”

Section: Introductionmentioning

confidence: 99%

Freshwater sediment pesticide biodegradation potential as an ecological indicator of microbial recovery following a decrease in chronic pesticide exposure: A case study with the herbicide diuron

Pesce¹,

Margoum²,

Rouard³

et al. 2013

Ecological Indicators

View full text Add to dashboard Cite

The aim of this study was to evaluate the use of freshwater sediment biodegradation potential as an ecological indicator for monitoring microbial recovery following a decrease in chronic pesticide exposure. For this purpose, a four-year case study (2008)(2009)(2010)(2011) was conducted in a small stream (Morcille river) long exposed to high diuron concentrations, increasing from upstream to downstream. Our results show that the ban on diuron in December 2008 resulted in a progressive decrease in its concentrations in the Morcille river over the survey period. However, diuron remained present in the water three years after the ban. The spatio-temporal variations in the sediment biodegradation potential were assessed by radiorespirometry using [ring-U-14C] diuron to estimate diuron mineralization potentials. Between autumn 2008 and autumn 2011, mean diuron mineralization percentage after 15 weeks of incubation decreased by 65% downstream and by 82% in the intermediate sector, and mean 10% diuron dissipation time values increased between 143% (downstream) and 210% (intermediate). Thus the decrease in the level of chronic diuron exposure in the river also caused a fall in sediment diuron-mineralizing capacities, revealing a corresponding recovery of microbial communities. Our results show that the use of freshwater sediment biodegradation potential may be useful for assessing microbial recovery after a decrease in chronic exposure to pollutants, opening prospects for developing a new class of ecological indicator to monitor the recovery of biological quality of water resources. In this way, the use of molecular approaches based on direct extraction of nucleic acids from environmental matrices and their subsequent analysis by PCR-based approaches to quantify the abundance of pesticide-degrading communities could represent a promising alternative. Highlights► We performed a 4-year survey in a river long exposed to diuron. ► The ban on diuron resulted in a gradual fall in its concentrations in the river. ► Sediment diuron biodegradation potential decreased throughout the survey. ► Degradation capacities can be an ecological indicator to gauge microbial recovery.

show abstract

Priority substances of the European Water Framework Directive: analytical challenges in monitoring water quality

Cited by 114 publications

References 14 publications

Changes in antitoxic defense systems of the freshwater amphipod Gammarus pulex exposed to BDE-47 and BDE-99

Changes in antitoxic defense systems of the freshwater amphipod Gammarus pulex exposed to BDE-47 and BDE-99

Effects of two PBDE congeners on the moulting enzymes of the freshwater amphipod Gammarus pulex

Freshwater sediment pesticide biodegradation potential as an ecological indicator of microbial recovery following a decrease in chronic pesticide exposure: A case study with the herbicide diuron

Contact Info

Product

Resources

About