The periphyton as a multimetric bioindicator for assessing the impact of land use on rivers: an overview of the Ardières-Morcille experimental watershed (France)

Montuelle, Bernard; Dorigo, Ursula; Bérard, Annette; Volat, Bernadette; Bouchez, Agnès; Tlili, Ahmed; Gouy, Véronique; Pesce, Stéphane

doi:10.1007/s10750-010-0105-2

Cited by 103 publications

(64 citation statements)

References 74 publications

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“…In recent years it has been extensively studied to assess the effect of toxicants on microbial communities. [16][17][18] Diuron was identified as one of the major contaminants in the river. 6 This study focused on an upstream site (Saint Joseph) not impacted by agriculture and a highly polluted downstream site (Saint Ennemond) (Fig.…”

Section: Study Areamentioning

confidence: 99%

Variations of periphytic diatom sensitivity to the herbicide diuron and relation to species distribution in a contamination gradient: implications for biomonitoring

Roubeix¹,

Mazzella²,

Schouler³

et al. 2011

J. Environ. Monit.

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Diatoms are commonly used as bioindicators of trophic and saprobic pollution in rivers. However, more knowledge is needed concerning their sensitivity to toxicants such as agricultural herbicides. In this study, seven species of periphytic diatoms were isolated from the Morcille River (Beaujolais area, France) which presents a streamward contamination gradient by pesticides and particularly diuron. The sensitivity of these species to diuron was assessed through ecotoxicological tests based on short-term growth inhibition of monospecific cultures. After application of an appropriate toxicological model, EC50 were determined and the species were ranked according to their tolerance. EC50 values ranged from 4.5 to 19 μg L−1. Finally, the results were related to field periphyton samples from an upstream and a downstream site in order to check if variations in specific relative abundance between sites are consistent with differences in tolerance to diuron. Species distribution between sites was only partially in accordance with toxicological results suggesting that other factors (toxic or trophic) have an important influence on diatom communities in the river. Nevertheless, diatoms showed their potential to indicate water contamination by pesticides and toxic indices could be developed in complement to existing trophic indices

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Section: Study Areamentioning

confidence: 99%

Variations of periphytic diatom sensitivity to the herbicide diuron and relation to species distribution in a contamination gradient: implications for biomonitoring

Roubeix¹,

Mazzella²,

Schouler³

et al. 2011

J. Environ. Monit.

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“…This site was chosen because numerous studies have shown that before its ban, diuron was the most frequently detected pesticide in the Morcille river, where it displays a gradient of contamination running upstream to downstream (e.g. Montuelle et al, 2010 andRabiet et al, 2010). Accordingly, it was expected than the ban of diuron would have led to a sharp decrease in its concentrations in the contaminated sections of the Morcille river.…”

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

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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.

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“…Moreover, primary producers are important mediators of anthropogenic impacts in almost all ecosystems . In stream ecosystems, periphyta are studied as an indicator for longterm biological monitoring, management and evaluation (Feio et al, 2010;Montuelle et al, 2010;Quinlan et al, 2011;Steinman et al, 2011;Benoy et al, 2012;Khan and Firuza, 2012;Lavoie et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Longitudinal patterns of periphyton biomass in Qinghai–Tibetan Plateau streams: An indicator of pasture degradation?

Ren

Jiang

Cai

2013

Quaternary International

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The periphyton as a multimetric bioindicator for assessing the impact of land use on rivers: an overview of the Ardières-Morcille experimental watershed (France)

Cited by 103 publications

References 74 publications

Variations of periphytic diatom sensitivity to the herbicide diuron and relation to species distribution in a contamination gradient: implications for biomonitoring

Variations of periphytic diatom sensitivity to the herbicide diuron and relation to species distribution in a contamination gradient: implications for biomonitoring

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

Longitudinal patterns of periphyton biomass in Qinghai–Tibetan Plateau streams: An indicator of pasture degradation?

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