Environmental effects of realistic pesticide mixtures on natural biofilm communities with different exposure histories

Tiam, Sandra Kim; Morin, Soizic; Pesce, Stéphane; Feurtet‐Mazel, Agnès; Moreira, Aurélie; Gonzalez, Patrice; Mazzella, Nicolás

doi:10.1016/j.scitotenv.2013.12.060

Cited by 28 publications

(15 citation statements)

References 29 publications

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“…In Kim Tiam et al (2014b, 2015), changes in biofilm biomass, growth, taxonomic structure and function (algal fluorescence and detoxification related endpoints) observed over 2 weeks confirmed the potential of the use of PE in long-term exposures to assess the impacts of low dose mixtures, as found in the field. These impacts differed depending on biofilm history (previously exposed or not, and thus species composition and adaptation Kim Tiam et al, 2014b). These works highlighted that long-term exposure to low dose mixtures impacts aquatic organisms at a relatively short time scale.…”

Section: Introductionmentioning

confidence: 74%

“…POCIS extracts were used to assess the impacts of environmental pesticide mixtures with ecologically relevant bioassays with biofilms (Pesce et al, 2011; Morin et al, 2012c; Kim Tiam et al, 2014b). Toxicity testing of pesticide extracted from POCIS was recently performed on biofilms originated from different French rivers subjected to agricultural pressure (Table 4).…”

Section: Introductionmentioning

confidence: 99%

“…The works based on the PICT concept, using PE considered as a “blackbox” of contaminants, allowed to highlight previous exposure of the biofilms, or not, to these cocktails. The ecological significance of combined PICT and PE approaches proved to be relevant, for biofilms sampled from rivers presenting different contamination profiles in term of concentrations and/or nature of compounds detected (Pesce et al, 2011; Morin et al, 2012c; Kim Tiam et al, 2014b; Foulquier et al, 2015). The PICT responses of field biofilms were compared in three study sites subjected to distinct kinds of agricultural pressure (increasing vineyard occupation from upstream to downstream in Morcille river, distinct land use along the Ruiné river and growing cereal crops at the Trec river; Table 4).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Improving Toxicity Assessment of Pesticide Mixtures: The Use of Polar Passive Sampling Devices Extracts in Microalgae Toxicity Tests

et al. 2016

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Complexity of contaminants exposure needs to be taking in account for an appropriate evaluation of risks related to mixtures of pesticides released in the ecosystems. Toxicity assessment of such mixtures can be made through a variety of toxicity tests reflecting different level of biological complexity. This paper reviews the recent developments of passive sampling techniques for polar compounds, especially Polar Organic Chemical Integrative Samplers (POCIS) and Chemcatcher® and the principal assessment techniques using microalgae in laboratory experiments. The progresses permitted by the coupled use of such passive samplers and ecotoxicology testing as well as their limitations are presented. Case studies combining passive sampling devices (PSD) extracts and toxicity assessment toward microorganisms at different biological scales from single organisms to communities level are presented. These case studies, respectively, aimed (i) at characterizing the “toxic potential” of waters using dose-response curves, and (ii) at performing microcosm experiments with increased environmental realism in the toxicant exposure in term of cocktail composition and concentration. Finally perspectives and limitations of such approaches for future applications in the area of environmental risk assessment are discussed.

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Section: Introductionmentioning

confidence: 74%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Improving Toxicity Assessment of Pesticide Mixtures: The Use of Polar Passive Sampling Devices Extracts in Microalgae Toxicity Tests

et al. 2016

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“…Most of these studies were performed using extracts of POCIS that trap, among other organic substances, the most hydrophilic pesticides (for a review see Harman et al 2012). More recently, it has been shown that the combination of POCIS and bioassays could be used to assess the short-term effects of extracted pesticide mixtures on phototrophic biofilm communities, opening new perspectives to implement PICT-based approaches on pesticide mixtures (Pesce et al 2011a;Morin et al 2012;Kim-Tiam et al 2014a). One advantage of such an approach, besides considering mixtures, is that there is no need to make an a priori selection of the pesticides tested, thus giving an estimation of an integrative measure of the toxic potential of a group of compounds including unknown toxicants and metabolites, which are usually overlooked in ecotoxicological studies, especially when assessing effects at the community level (Pesce et al 2010b).…”

Section: Discussionmentioning

confidence: 99%

“…PICT assessments are generally based on short-term toxicity tests with individual toxicants or artificially reconstituted toxicant mixtures (Pesce et al 2010b). Recently, promising PICT approaches have been successfully conducted with pesticide mixtures directly extracted from the field, using polar organic chemical integrative samplers (POCIS), allowing the detection of differences in tolerance levels between biofilms according to their in situ exposure history (Pesce et al 2011a;Kim-Tiam et al 2014a). However, pesticide mixtures collected with passive samplers only reflect dissolved toxicant levels and ignore the contamination associated with toxicants bound to suspended particulate matter.…”

Section: Responsible Editor: Philippe Garriguesmentioning

confidence: 99%

Effects of mixtures of dissolved and particulate contaminants on phototrophic biofilms: new insights from a PICT approach combining toxicity tests with passive samplers and model substances

Foulquier

Morin

Dabrin

et al. 2014

Environ Sci Pollut Res

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Streams located in vineyard areas are particularly exposed to mixtures of dissolved and particulate contaminants such as metals and organic pesticides. In this context, phototrophic biofilms are increasingly used as indicators of river water contaminations through pollution-induced community tolerance (PICT) assessments based on short-term toxicity tests with individual or mixtures of toxicants. We conducted a laboratory experiment to evaluate the relative influence of the dissolved and particulate fractions on the effects of metals and pesticides on phototrophic biofilms in a context of contamination from a vineyard watershed. Three sets of artificial channels were supplied with (i) unfiltered water from a stream reference site, (ii) unfiltered water from a stream contaminated site, and (iii) filtered water (0.45 μm) from the same contaminated site. Biofilm growth, diatom community structure, and dissolved toxicant concentrations differed slightly between channels supplied with unfiltered or filtered water from the contaminated site. However, PICT assessments with individual toxicants or mixtures of toxicants extracted from passive samplers suggested no significant difference in tolerance to metals and organic pesticides between phototrophic communities supplied with unfiltered or filtered contaminated water. Our results confirm the use of extracts from passive samplers as a promising approach in short-term toxicity tests to characterize impacts of contamination on aquatic communities.

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Pesticide Mixtures Cause Short‐Term, Reversible Effects on the Function of Autotrophic Periphyton Assemblages

Bighiu

Gottschalk

Arrhenius

et al. 2020

Enviro Toxic and Chemistry

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In a laboratory experiment we investigated the effects of pesticide mixtures on the structure and function of freshwater biofilms, with focus on their photoautotrophic component. We identified 6 herbicides and 1 fungicide commonly found in Swedish streams at relatively high concentrations and created 3 ternary mixtures that were tested in concentration series ranging from observed environmental concentrations to up to 100 times higher. Biofilms were exposed to these pesticide mixtures for 8 d and then allowed to recover for another 12 d. Our results show a rapid and consistent inhibition of photosynthesis after just 24‐h exposure to the highest test concentration of pesticides, as well as in some treatments with lower concentrations (i.e., 10 times the environmental level), on exposure. Interestingly, the observed effects were reversible because biofilm photosynthesis recovered rapidly and completely in clean media in all but one treatment. In contrast to the functional response, no effects were observed on the algal assemblage structure, as assessed by diagnostic pigments. We conclude that the pesticide mixtures induce a rapid but reversible inhibition of photosynthesis, without short‐term effects on biofilm structure. Environ Toxicol Chem 2020;39:1367–1374. © 2020 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.

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Environmental effects of realistic pesticide mixtures on natural biofilm communities with different exposure histories

Cited by 28 publications

References 29 publications

Improving Toxicity Assessment of Pesticide Mixtures: The Use of Polar Passive Sampling Devices Extracts in Microalgae Toxicity Tests

Improving Toxicity Assessment of Pesticide Mixtures: The Use of Polar Passive Sampling Devices Extracts in Microalgae Toxicity Tests

Effects of mixtures of dissolved and particulate contaminants on phototrophic biofilms: new insights from a PICT approach combining toxicity tests with passive samplers and model substances

Pesticide Mixtures Cause Short‐Term, Reversible Effects on the Function of Autotrophic Periphyton Assemblages

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