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Yang J, Zhang M, Chen C, Zhao D, Chen Y, An S. Effect of Tubifex tubifex on the purification function of saturated vertical flow constructed wetlands for effluents with varying C/N ratios. CHEMOSPHERE 2023; 340:139872. [PMID: 37598942 DOI: 10.1016/j.chemosphere.2023.139872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Revised: 08/08/2023] [Accepted: 08/17/2023] [Indexed: 08/22/2023]
Abstract
The improvement effect of Tubifex tubifex on the pollutant removal efficiencies (REs) of vertical flow constructed wetlands (VF-CWs) treating wastewater with various C/N ratios was explored. The experiment was conducted in pilot-scale saturated VF-CWs, being added different densities of T. tubifex and fed synthetic wastewater with successive C/N ratios of 0.5, 1.5, 3.0 and 6.0. The results suggest that T. tubifex addition and the influent C/N ratio had an interactive effect, i.e., T. tubifex addition improved NOx--N, NH4+-N, TN and COD REs by 36.7%, 56.5%, 22.6%, and 10.0%, respectively, under low C/N ratios, while high C/N ratios inhibited this improvement. Low-density T. tubifex addition significantly increased substrate dissolved oxygen (DO) by retarding excessive soil organic matter (OM) accumulation. With T. tubifex addition, an improvement in bacterial diversity, the relative abundance of N-cycle and fermentative bacteria, and N-cycle functional genes was only observed in substrates under low C/N ratios. T. tubifex can improve the purification function of saturated VF-CWs, but this strategy strongly depends on both the influent C/N ratio and density of T. tubifex addition.
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Affiliation(s)
- Jiqiang Yang
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou, 225009, PR China
| | - Miao Zhang
- Jiangsu Environmental Engineering Technology Co., Ltd, Nanjing, 210036, PR China
| | - Chen Chen
- Institute of Wetland Ecology, School of Life Science, Nanjing University, Nanjing, 210093, PR China
| | - Dehua Zhao
- Institute of Wetland Ecology, School of Life Science, Nanjing University, Nanjing, 210093, PR China.
| | - Yun Chen
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou, 225009, PR China
| | - Shuqing An
- Institute of Wetland Ecology, School of Life Science, Nanjing University, Nanjing, 210093, PR China
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2
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Sharma P, Garai P, Banerjee P, Saha S, Chukwuka AV, Chatterjee S, Saha NC, Faggio C. Behavioral toxicity, histopathological alterations and oxidative stress in Tubifex tubifex exposed to aromatic carboxylic acids- acetic acid and benzoic acid: A comparative time-dependent toxicity assessment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 876:162739. [PMID: 36906024 DOI: 10.1016/j.scitotenv.2023.162739] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 02/23/2023] [Accepted: 03/05/2023] [Indexed: 06/18/2023]
Abstract
This study evaluated Acetic acid (AA) and Benzoic acid's (BA) acute and sublethal toxicity by observing mortality, behavioral responses, and changes in the levels of oxidative stress enzymes in Tubifex tubifex. Exposure-induced changes in antioxidant activity (Catalase, Superoxide dismutase), oxidative stress (Malondialdehyde concentrations), and histopathological alterations in the tubificid worms were also noted across exposure intervals. The 96 h LC50 values of AA and BA to T. tubifex were 74.99 and 37.15 mg/l, respectively. Severity in behavioral alterations (including increased mucus production, wrinkling, and reduction in clumping) and autotomy showed concentration-dependent trends for both toxicants. Although histopathological effects also showed marked degeneration in the alimentary and integumentary systems in highest exposure groups (worms exposed to 14.99 mg/l for AA and 7.42 mg/l for BA) for both toxicants. Antioxidant enzymes (catalase and superoxide dismutase) also showed a marked increase of up to 8-fold and 10-fold for the highest exposure group of AA and BA respectively. While species sensitivity distribution analysis revealed T. tubifex as most sensitive to AA and BA compared to other freshwater vertebrates and invertebrates, General Unified Threshold model of Survival (GUTS) predicted individual tolerance effects (GUTS-IT), with slower potential for toxicodynamic recovery, as a more likely pathway for population mortality. Study findings demonstrate BA with greater potential for ecological effects compared to AA within 24 h of exposure. Furthermore, ecological risks to critical detritus feeders like T. tubifex may have severe implications for ecosystem services and nutrient availability within freshwater habitats.
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Affiliation(s)
- Pramita Sharma
- Fishery and Ecotoxicology Research Laboratory (Vice-Chancellor's Research Group), Department of Zoology, The University of Burdwan, Burdwan, West Bengal, India
| | - Pramita Garai
- Fishery and Ecotoxicology Research Laboratory (Vice-Chancellor's Research Group), Department of Zoology, The University of Burdwan, Burdwan, West Bengal, India
| | - Priyajit Banerjee
- Fishery and Ecotoxicology Research Laboratory (Vice-Chancellor's Research Group), Department of Zoology, The University of Burdwan, Burdwan, West Bengal, India
| | - Shubhajit Saha
- Department of Zoology, Sundarban Hazi Desarat College, Pathankhali, South 24, Parganas 743611, West Bengal, India
| | - Azubuike V Chukwuka
- National Environmental Standards and Regulations Enforcement Agency, Osogbo, Osun State, Nigeria
| | - Soumendranath Chatterjee
- Parasitology & Microbiology Research Laboratory, Department of Zoology, The University of Burdwan, Burdwan, West Bengal 713 104, India
| | - Nimai Chandra Saha
- Fishery and Ecotoxicology Research Laboratory (Vice-Chancellor's Research Group), Department of Zoology, The University of Burdwan, Burdwan, West Bengal, India.
| | - Caterina Faggio
- Department of Chemical, Biological, Pharmaceutical, and Environmental Sciences, University of Messina, Messina, Italy.
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Wazne M, Mermillod-Blondin F, Vallier M, Hervant F, Dumet A, Nel HA, Kukkola A, Krause S, Simon L. Microplastics in Freshwater Sediments Impact the Role of a Main Bioturbator in Ecosystem Functioning. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:3042-3052. [PMID: 36790328 DOI: 10.1021/acs.est.2c05662] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
While microplastic transport, fate, and effects have been a focus of studies globally, the consequences of their presence on ecosystem functioning have not received the same attention. With increasing evidence of the accumulation of microplastics at sediment-water interfaces there is a need to assess their impacts on ecosystem engineers, also known as bioturbators, which have direct and indirect effects on ecosystem health. This study investigated the impact of microplastics on the bioturbator Tubifex tubifex alongside any effects on the biogeochemical processes at the sediment-water interface. Bioturbators were exposed to four sediment microplastic concentrations: 0, 700, 7000, and 70000 particles kg-1 sediment dry weight. Though no mortality was present, a significant response to oxidative stress was detected in tubificid worms after exposure to medium microplastic concentration (7000 particles kg-1 sediment dry weight). This was accompanied by a reduction in worm bioturbation activities assessed by their ability to rework sediment and to stimulate exchange water fluxes at the sediment-water interface. Consequently, the contributions of tubificid worms on organic matter mineralization and nutrient fluxes were significantly reduced in the presence of microplastics. This study demonstrated that environmentally realistic microplastic concentrations had an impact on biogeochemical processes at the sediment-water interface by reducing the bioturbation activities of tubificid worms.
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Affiliation(s)
- Mohammad Wazne
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR 5023 LEHNA, F 69622 Villeurbanne, France
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K
| | - Florian Mermillod-Blondin
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR 5023 LEHNA, F 69622 Villeurbanne, France
| | - Manon Vallier
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR 5023 LEHNA, F 69622 Villeurbanne, France
| | - Frédéric Hervant
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR 5023 LEHNA, F 69622 Villeurbanne, France
| | - Adeline Dumet
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR 5023 LEHNA, F 69622 Villeurbanne, France
| | - Holly A Nel
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K
- Centre for Environment Fisheries and Aquaculture Science, Pakefield Road, Lowestoft, Suffolk NR33 0HT, U.K
| | - Anna Kukkola
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K
| | - Stefan Krause
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR 5023 LEHNA, F 69622 Villeurbanne, France
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K
| | - Laurent Simon
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR 5023 LEHNA, F 69622 Villeurbanne, France
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Chakraborty A, Saha GK, Aditya G. Macroinvertebrates as engineers for bioturbation in freshwater ecosystem. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:64447-64468. [PMID: 35864394 DOI: 10.1007/s11356-022-22030-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 07/11/2022] [Indexed: 06/15/2023]
Abstract
Bioturbation is recognized as a deterministic process that sustains the physicochemical properties of the freshwater ecosystem. Irrigation, ventilation, and particle reworking activities made by biotic components on sediment beds influence the flow of nutrients and transport of particles in the sediment-water interface. Thus, the biogenic disturbances in sediment are acknowledged as pivotal mechanism nutrient cycling in the aquatic system. The macroinvertebrates of diverse taxonomic identity qualify as potent bioturbators due to their abundance and activities in the freshwater. Of particular relevance are the bioturbation activities by the sediment-dwelling biota, which introduce changes in both sediment and water profile. Multiple outcomes of the macroinvertebrate-mediated bioturbation are recognized in the form of modified sediment architecture, changed redox potential in the sediment-water interface, and elicited nutrient fluxes. The physical movement and physiological activities of benthic macroinvertebrates influence organic deposition in sediment and remobilize sediment-bound pollutants and heavy metals, as well as community composition of microbes. As ecosystem engineers, the benthic macroinvertebrates execute multiple functional roles through bioturbation that facilitate maintaining the freshwater as self-sustaining and self-stabilizing system. The likely consequences of bioturbation on the freshwater ecosystems facilitated by various macroinvertebrates - the ecosystem engineers. Among the macroinvertebrates, varied species of molluscs, insects, and annelids are the key facilitators for the movement of the nutrients and shaping of the sediment of the freshwater ecosystem.
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Affiliation(s)
- Anupam Chakraborty
- Department of Zoology, University of Calcutta, 35 Ballygunge Circular Road, Kolkata, 700019, India
| | - Goutam K Saha
- Department of Zoology, University of Calcutta, 35 Ballygunge Circular Road, Kolkata, 700019, India
| | - Gautam Aditya
- Department of Zoology, University of Calcutta, 35 Ballygunge Circular Road, Kolkata, 700019, India.
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Exploratory accounts of the increasing pollution gradients and macroinvertebrates structural assemblage in an afrotropical estuary. Biologia (Bratisl) 2022. [DOI: 10.1007/s11756-022-01076-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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The Effect of Tubificid Bioturbation on Vertical Water Exchange across the Sediment–Water Interface. WATER 2020. [DOI: 10.3390/w12123467] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The bioturbation activity of macroinvertebrates can affect the level of water exchange across the sediment–water interface. The impact of tubificid worm with different densities on the vertical water exchange at the sediment–water interface was investigated based on laboratory flume experiments. Vertical water fluxes, as well as physiochemical parameters, were measured at seven-day intervals, and the maximum penetration depths were obtained by dye injection before and after the tubificid bioturbation experiment, respectively. The bioturbation effects can be summarized in two aspects: (1) when the density was less than (or equal to) 20 individual/10 cm2, the volume of vertical water exchange positively correlated with the tubificid bioturbation. Once the density exceeded (or equaled) 25 individual/10 cm2, the vertical water flux decreased with increasing tubificid bioturbation. After 14 to 21 days, a negative correlation was identified between the bioturbation and the vertical water flux under all biological densities. (2) The maximum depth that the surface water can penetrate the sediment increased with increasing tubificid density. These results revealed that the vertical water was closely related to the biological density. The study has certain reference significance to understanding the spatiotemporal heterogeneity of hyporheic water exchange on a local scale.
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Yang J, Wan Y, Cao Z, Zhang M, Zheng F, Leng X, Zhao D, An S. Enhanced organic matter decomposition in sediment by Tubifex tubifex and its pathway. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 275:111281. [PMID: 32854048 DOI: 10.1016/j.jenvman.2020.111281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 07/30/2020] [Accepted: 08/19/2020] [Indexed: 06/11/2023]
Abstract
The role of Tubifex tubifex in organic matter (OM) decomposition in aquatic ecosystems has been widely studied, but considerable uncertainties exist in terms of the effect mechanism. The effect of T. tubifex on sediment OM decomposition in laboratory-scale microcosms was quantified, and possible pathways were identified. In the first 7 days of the decomposition of OM mixed in sediment, no significant effect of T. tubifex on organic matter loss (OML) was observed for both low- and high-OM treatments; meanwhile, from day 7-60, T. tubifex addition significantly improved OML from 55.0%-57.5% to 71.8%-77.7% in the low-OM treatments and from 55.5%-56.6% to 64.1%-68.7% in the high-OM treatments. The enhanced OML observed with T. tubifex was mainly due to the promoted decomposition of refractory organic components, e.g., cellulose, hemicellulose and lignin. The proportion of refractory components in the gut of T. tubifex was significantly lower than that in the sediments (p < 0.01), indicating a pathway corresponding to the ingestion and digestion of refractory components by T. tubifex. Although T. tubifex reduced the water dissolved oxygen (DO) by increasing the water chemical oxygen demand (COD), the oxygen supply was improved by T. tubifex, and this could be affected by the increase in the relative abundance of aerobic to anaerobic bacteria in the sediments. T. tubifex significantly increased the diversity of the bacterial and fungal communities in the sediments. Moreover, the community structure of bacteria and fungi was substantially different between gut and sediment. Therefore, multiple pathways of the effect of T. tubifex on OM decomposition were established, and the results have great significance for the artificial manipulation of OM circulation using T. tubifex and the restoration of damaged aquatic ecosystems.
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Affiliation(s)
- Jiqiang Yang
- School of Life Science and Institute of Wetland Ecology, Nanjing University, Nanjing, 210093, PR China; Nanjing University Ecology Research Institute of Changshu (NJUecoRICH), Changshu, 215500, Jiangsu, PR China
| | - Yun Wan
- School of Life Science and Institute of Wetland Ecology, Nanjing University, Nanjing, 210093, PR China; Nanjing University Ecology Research Institute of Changshu (NJUecoRICH), Changshu, 215500, Jiangsu, PR China
| | - Zhifan Cao
- School of Life Science and Institute of Wetland Ecology, Nanjing University, Nanjing, 210093, PR China; Nanjing University Ecology Research Institute of Changshu (NJUecoRICH), Changshu, 215500, Jiangsu, PR China
| | - Miao Zhang
- School of Life Science and Institute of Wetland Ecology, Nanjing University, Nanjing, 210093, PR China; Nanjing University Ecology Research Institute of Changshu (NJUecoRICH), Changshu, 215500, Jiangsu, PR China
| | - Fuchao Zheng
- School of Life Science and Institute of Wetland Ecology, Nanjing University, Nanjing, 210093, PR China; Nanjing University Ecology Research Institute of Changshu (NJUecoRICH), Changshu, 215500, Jiangsu, PR China
| | - Xin Leng
- School of Life Science and Institute of Wetland Ecology, Nanjing University, Nanjing, 210093, PR China; Nanjing University Ecology Research Institute of Changshu (NJUecoRICH), Changshu, 215500, Jiangsu, PR China
| | - Dehua Zhao
- School of Life Science and Institute of Wetland Ecology, Nanjing University, Nanjing, 210093, PR China; Nanjing University Ecology Research Institute of Changshu (NJUecoRICH), Changshu, 215500, Jiangsu, PR China.
| | - Shuqing An
- School of Life Science and Institute of Wetland Ecology, Nanjing University, Nanjing, 210093, PR China; Nanjing University Ecology Research Institute of Changshu (NJUecoRICH), Changshu, 215500, Jiangsu, PR China.
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8
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Thit A, Banta GT, Palmqvist A, Selck H. Effects of sediment-associated Cu on Tubifex tubifex - Insights gained by standard ecotoxicological and novel, but simple, bioturbation endpoints. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 266:115251. [PMID: 32814176 DOI: 10.1016/j.envpol.2020.115251] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 07/09/2020] [Accepted: 07/12/2020] [Indexed: 06/11/2023]
Abstract
Sediments serve as both source and sink of contaminants (e.g., Cu) and biologically important materials (e.g., metals, nutrients). Bioturbation by benthic organisms is ecologically relevant as bioturbation affects the physio-chemical characteristics of sediments, thus altering nutrient and contaminant distribution and bioavailability. We examined the effects of sediment-associated Cu on T. tubifex with conventional toxicity endpoints, such as mortality and growth, and less commonly used non-destructive endpoints, such as bioturbation and feeding. An experimental approach was developed to examine the applicability of simple methods to detect effects on bioturbation and feeding. Two experiments were conducted with 7-day exposures to uncontaminated or Cu-spiked natural sediment at six Cu concentrations to examine Cu bioaccumulation and effects. Endpoints included worm mortality, feeding rate and growth (experiment A) and worm bioturbation (particle diffusion and maximum penetration depth, experiment B). A microparticle tracer was placed on the sediment surface and vertical particle transport was followed over time. Adverse effects were detected for all endpoints (bioturbation, feeding rate, growth and survival): a slight positive effect at the lowest Cu concentrations followed by adverse effects at higher concentrations indicating hormesis. These simple, non-destructive endpoints, provided valuable information and demonstrated that sediment-associated contaminants, such as Cu, can influence bioturbation activity, which in turn may affect the distribution of sediment-bound or particulate pollutants, such as the plastic microparticles studied here. Thus, we suggest to use simple endpoints, such as bioturbation and feeding rate, in ecotoxicity testing since these endpoint account for the influence of interactions between pollutants and benthos and, thus, increase ecological relevance.
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Affiliation(s)
- Amalie Thit
- Dept. of Science and Environment, Roskilde University, Roskilde, Denmark.
| | - Gary T Banta
- Dept. of Science and Environment, Roskilde University, Roskilde, Denmark; Dept. of Biology, University of Southern Denmark, Odense, Denmark.
| | | | - Henriette Selck
- Dept. of Science and Environment, Roskilde University, Roskilde, Denmark.
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Cheng D, Song J, Zhao X, Wang S, Lin Q, Peng J, Su P, Deng W. Effects of chironomid larvae and Limnodrilus hoffmeisteri bioturbation on the distribution and flux of chromium at the sediment-water interface. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 245:151-159. [PMID: 31150906 DOI: 10.1016/j.jenvman.2019.05.083] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2018] [Revised: 05/15/2019] [Accepted: 05/21/2019] [Indexed: 06/09/2023]
Abstract
The impacts of chironomid larvae and the tubificid worm Limnodrilus hoffmeisteri on the distribution and flux of the heavy metal chromium (Cr) across the sediment-water interface were investigated with a 21-day laboratory microcosm experiment. The two studied species feature different bioturbation modes involving bioirrigation and upward bioconveyance. The Cr concentrations in the overlying water and pore water were measured and compared using treatments with bioturbation by a single species and by combinations of both species and a treatment with no organisms. The results indicated that both bioturbation modes significantly increased the Cr concentrations in the overlying water and pore water. The overlying water had lower Cr concentrations than the pore water. Little variation in the Cr concentrations was observed in the treatment without organisms. Both species enhanced the Cr flux from the pore water to the overlying water. The worm treatments had a great impact on the Cr concentration in the overlying water through intensive upward conveyance activity, while the chironomid larvae treatments exerted significant effects on the Cr variation in the pore water and Cr flux across the interface via bioirrigation activity. These findings reveal the importance of bioturbation in biogeochemical processes in freshwater ecosystems.
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Affiliation(s)
- Dandong Cheng
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jinxi Song
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, China; Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, College of Urban and Environmental Sciences, Northwest University, Xi'an 710127, China.
| | - Xiaotian Zhao
- Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, College of Urban and Environmental Sciences, Northwest University, Xi'an 710127, China
| | - Shaoqing Wang
- Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, College of Urban and Environmental Sciences, Northwest University, Xi'an 710127, China
| | - Qidong Lin
- Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, College of Urban and Environmental Sciences, Northwest University, Xi'an 710127, China
| | - Jianglin Peng
- Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, College of Urban and Environmental Sciences, Northwest University, Xi'an 710127, China
| | - Ping Su
- Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, College of Urban and Environmental Sciences, Northwest University, Xi'an 710127, China
| | - Wenjia Deng
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, China; University of Chinese Academy of Sciences, Beijing 100049, China
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10
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Jacobus LM, Macadam CR, Sartori M. Mayflies (Ephemeroptera) and Their Contributions to Ecosystem Services. INSECTS 2019; 10:E170. [PMID: 31207933 PMCID: PMC6628430 DOI: 10.3390/insects10060170] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 06/03/2019] [Accepted: 06/06/2019] [Indexed: 11/16/2022]
Abstract
This work is intended as a general and concise overview of Ephemeroptera biology, diversity, and services provided to humans and other parts of our global array of freshwater and terrestrial ecosystems. The Ephemeroptera, or mayflies, are a small but diverse order of amphinotic insects associated with liquid freshwater worldwide. They are nearly cosmopolitan, except for Antarctica and some very remote islands. The existence of the subimago stage is unique among extant insects. Though the winged stages do not have functional mouthparts or digestive systems, the larval, or nymphal, stages have a variety of feeding approaches-including, but not limited to, collector-gatherers, filterers, scrapers, and active predators-with each supported by a diversity of morphological and behavioral adaptations. Mayflies provide direct and indirect services to humans and other parts of both freshwater and terrestrial ecosystems. In terms of cultural services, they have provided inspiration to musicians, poets, and other writers, as well as being the namesakes of various water- and aircraft. They are commemorated by festivals worldwide. Mayflies are especially important to fishing. Mayflies contribute to the provisioning services of ecosystems in that they are utilized as food by human cultures worldwide (having one of the highest protein contents of any edible insect), as laboratory organisms, and as a potential source of antitumor molecules. They provide regulatory services through their cleaning of freshwater. They provide many essential supporting services for ecosystems such as bioturbation, bioirrigation, decomposition, nutrition for many kinds of non-human animals, nutrient cycling and spiraling in freshwaters, nutrient cycling between aquatic and terrestrial systems, habitat for other organisms, and serving as indicators of ecosystem health. About 20% of mayfly species worldwide might have a threatened conservation status due to influences from pollution, invasive alien species, habitat loss and degradation, and climate change. Even mitigation of negative influences has benefits and tradeoffs, as, in several cases, sustainable energy production negatively impacts mayflies.
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Affiliation(s)
- Luke M Jacobus
- Division of Science, Indiana University Purdue University Columbus, 4601 Central Ave., Columbus, IN 47203, USA.
| | - Craig R Macadam
- Buglife-The Invertebrate Conservation Trust, Balallan House, 24 Allan Park, Stirling, Scotland FK8 2QG, UK.
| | - Michel Sartori
- Musée cantonal de zoologie, Palais de Rumine, Place de la Riponne 6, CH-1005 Lausanne, Switzerland.
- Department of Ecology and Evolution, University of Lausanne, Biophore, CH-1015 Lausanne, Switzerland.
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Dairain A, de Montaudouin X, Gonzalez P, Ciutat A, Baudrimont M, Maire O, Legeay A. Do trace metal contamination and parasitism influence the activities of the bioturbating mud shrimp Upogebia cf. pusilla? AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2018; 204:46-58. [PMID: 30189350 DOI: 10.1016/j.aquatox.2018.08.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Revised: 08/27/2018] [Accepted: 08/27/2018] [Indexed: 06/08/2023]
Abstract
Mud shrimp are considered as among the most influential ecosystem engineers in marine soft bottom environments because of their significant bioturbation activity and their high density. These organisms play a key role on the physical structure of sediments through intense sediment reworking activity and also deeply influence geochemical properties of sediments via frequent bioirrigation events. The influence that mud shrimp have on the environment is related to the magnitude of bioturbation processes and subsequently depends on their physiological condition. In natural environments, several factors act together and influence the well-being of organisms. Among them, the deleterious role of parasites on the physiology and the behavior of their host is well established. Aquatic organisms are also subject to pollutants released by anthropogenic activities. However, the effect of both stressors on the fitness and bioturbation activity of mud shrimp has never been investigated yet. We conducted a 14-day ex-situ experiment to evaluate the influence of trace metal contamination (cadmium Cd) and parasitism infestation on the gene expression (molecular endpoint) and sediment reworking activity (behavioral endpoint) of the mud shrimp Upogebia cf. pusilla. At completion, mud shrimp exhibited substantial Cd bioaccumulation, with parasitized organisms showing a significantly lower contaminant burden than unparasitized specimens. Cadmium contamination induces modifications of gene expression in both unparasitized and parasitized organisms. We report an antagonistic effect of both stressors on gene expression, which cannot be fully explained by a lower Cd bioaccumulation. At the behaviour level, parasitism seems to reduce the sediment reworking activity of mud shrimp, while Cd contamination appears to stimulate this activity. This study highlights that the effects of multiple stressors may be quite different from the effects of each stressor considered individually. It should also motivate for more studies evaluating the influence of multiple stressors on different endpoints encompassing various levels of organization.
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Affiliation(s)
| | | | | | | | | | - Olivier Maire
- Univ Bordeaux, EPOC, UMR CNRS 5805, F-33400 Talence, France
| | - Alexia Legeay
- Univ Bordeaux, EPOC, UMR CNRS 5805, F-33400 Talence, France
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12
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Hurley RR, Woodward JC, Rothwell JJ. Ingestion of Microplastics by Freshwater Tubifex Worms. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:12844-12851. [PMID: 29019399 DOI: 10.1021/acs.est.7b03567] [Citation(s) in RCA: 128] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Microplastic contamination of the aquatic environment is a global issue. Microplastics can be ingested by organisms leading to negative physiological impacts. The ingestion of microplastics by freshwater invertebrates has not been reported outside the laboratory. Here we demonstrate the ingestion of microplastic particles by Tubifex tubifex from bottom sediments in a major urban waterbody fed by the River Irwell, Manchester, UK. The host sediments had microplastic concentrations ranging from 56 to 2543 particles kg-1. 87% of the Tubifex-ingested microplastic particles were microfibers (55-4100 μm in length), while the remaining 13% were microplastic fragments (50-4500 μm in length). FT-IR analysis revealed ingestion of a range of polymers, including polyester and acrylic fibers. While microbeads were present in the host sediment matrix, they were not detected in Tubifex worm tissue. The mean concentration of ingested microplastics was 129 ± 65.4 particles g-1 tissue. We also show that Tubifex worms retain microplastics for longer than they retain other particulate components of the ingested sediment matrix. Microplastic ingestion by Tubifex worms poses a significant risk for trophic transfer and biomagnification of microplastics up the aquatic food chain.
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Affiliation(s)
- Rachel R Hurley
- Department of Geography, The University of Manchester , Manchester, M13 9PL, United Kingdom
| | - Jamie C Woodward
- Department of Geography, The University of Manchester , Manchester, M13 9PL, United Kingdom
| | - James J Rothwell
- Department of Geography, The University of Manchester , Manchester, M13 9PL, United Kingdom
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13
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He Y, Men B, Yang X, Li Y, Xu H, Wang D. Investigation of heavy metals release from sediment with bioturbation/bioirrigation. CHEMOSPHERE 2017; 184:235-243. [PMID: 28599152 DOI: 10.1016/j.chemosphere.2017.05.177] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 05/16/2017] [Accepted: 05/21/2017] [Indexed: 06/07/2023]
Abstract
Bioturbation/bioirrigation can affect the remobilization of metals from sediments. In this study, experiments were performed to examine the effect of bioturbation/bioirrigation by different organisms on cadmium (Cd), copper (Cu), zinc (Zn) and lead (Pb) releasing from the spiked sediment. The diffusive gradient in thin films technique (DGT) revealed that at the end of exposure time, the labile heavy metals concentrations in the pore water for all metal and organisms combinations except Cu and chironomid larvae were much lower than that in the control group. However, the concentrations of heavy metals detected by the DGT were virtually indistinguishable among the treatments with tubificid, chironomid larvae and loach. The correlation analysis of heavy metals with iron (Fe) and manganese (Mn) suggested that Cd, Zn and Pb were most likely bound as Fe-Mn oxidation form in the pore water, but Cu was in other forms. After 28 d of exposure, bioturbation/bioirrigation produced a significant release of particulate heavy metals into the overlying water, especially in the treatment with loach. The bioturbation/bioirrigation impact on the Pb remobilization was less than the other three heavy metals. The effects of bioturbaiton/bioirrigation on the heavy metals remobilization in the sediment were complex that with studying the heavy metals remobilization in the sediment and water interface, the biological indicators should be recommended.
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Affiliation(s)
- Yi He
- State Key Laboratory of Environmental Aquatic Chemistry, Research Centre for Eco-Environmental Science, Chinese Academy of Sciences, Beijing 100085, China
| | - Bin Men
- State Key Laboratory of Environmental Aquatic Chemistry, Research Centre for Eco-Environmental Science, Chinese Academy of Sciences, Beijing 100085, China.
| | - Xiaofang Yang
- State Key Laboratory of Environmental Aquatic Chemistry, Research Centre for Eco-Environmental Science, Chinese Academy of Sciences, Beijing 100085, China
| | - Yaxuan Li
- State Key Laboratory of Environmental Aquatic Chemistry, Research Centre for Eco-Environmental Science, Chinese Academy of Sciences, Beijing 100085, China
| | - Hui Xu
- State Key Laboratory of Environmental Aquatic Chemistry, Research Centre for Eco-Environmental Science, Chinese Academy of Sciences, Beijing 100085, China
| | - Dongsheng Wang
- State Key Laboratory of Environmental Aquatic Chemistry, Research Centre for Eco-Environmental Science, Chinese Academy of Sciences, Beijing 100085, China.
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14
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Mehring AS, Cook PLM, Evrard V, Grant SB, Levin LA. Pollution-tolerant invertebrates enhance greenhouse gas flux in urban wetlands. ECOLOGICAL APPLICATIONS : A PUBLICATION OF THE ECOLOGICAL SOCIETY OF AMERICA 2017; 27:1852-1861. [PMID: 28482116 DOI: 10.1002/eap.1572] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Revised: 04/06/2017] [Accepted: 04/19/2017] [Indexed: 06/07/2023]
Abstract
One of the goals of urban ecology is to link community structure to ecosystem function in urban habitats. Pollution-tolerant wetland invertebrates have been shown to enhance greenhouse gas (GHG) flux in controlled laboratory experiments, suggesting that they may influence urban wetland roles as sources or sinks of GHG. However, it is unclear if their effects can be detected in highly variable conditions in a field setting. Here we use an extensive data set on carbon dioxide (CO2 ), methane (CH4 ), and nitrous oxide (N2 O) flux in sediment cores (n = 103) collected from 10 urban wetlands in Melbourne, Australia during summer and winter in order to test for invertebrate enhancement of GHG flux. We detected significant multiplicative enhancement effects of temperature, sediment carbon content, and invertebrate density on CH4 and CO2 flux. Each doubling in density of oligochaete worms or large benthic invertebrates (oligochaete worms and midge larvae) corresponded to ~42% and ~15% increases in average CH4 and CO2 flux, respectively. However, despite exceptionally high densities, invertebrates did not appear to enhance N2 O flux. This was likely due to fairly high organic carbon content in sediments (range 2.1-12.6%), and relatively low nitrate availability (median 1.96 μmol/L NO3- -N), which highlights the context-dependent nature of community structural effects on ecosystem function. The invertebrates enhancing GHG flux in this study are ubiquitous, and frequently dominate faunal communities in impaired aquatic ecosystems. Therefore, invertebrate effects on CO2 and CH4 flux may be common in wetlands impacted by urbanization, and urban wetlands may make greater contributions to the total GHG budgets of cities if the negative impacts of urbanization on wetlands are left unchecked.
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Affiliation(s)
- Andrew S Mehring
- Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California, 92093, USA
| | - Perran L M Cook
- Water Studies Center, School of Chemistry, Monash University, Clayton, Victoria, 3800, Australia
| | - Victor Evrard
- Department of Environmental Sciences, University of Basel, Schönbeinstrasse 6, CH-4056, Basel, Switzerland
| | - Stanley B Grant
- Department of Civil and Environmental Engineering, Henry Samueli School of Engineering, University of California, Irvine, Irvine, California, 92697, USA
| | - Lisa A Levin
- Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California, 92093, USA
- Center for Marine Biodiversity and Conservation, Scripps Institution of Oceanography, La Jolla, California, 92093, USA
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15
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Bour A, Mouchet F, Cadarsi S, Silvestre J, Baqué D, Gauthier L, Pinelli E. CeO 2 nanoparticle fate in environmental conditions and toxicity on a freshwater predator species: a microcosm study. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:17081-17089. [PMID: 28585007 DOI: 10.1007/s11356-017-9346-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Accepted: 05/22/2017] [Indexed: 06/07/2023]
Abstract
We studied the fate and toxicity of two types of CeO2 NPs (bare or citrate-coated) in environmentally relevant conditions, using large indoor microcosms. Long-term exposure was carried out on a three-leveled freshwater trophic chain, comprising microbial communities as primary producers, chironomid larvae as primary consumers, and amphibian larvae as secondary consumers. Whereas coated NPs preferentially sedimented, bare NPs were mainly found in the water column. However, mass balance indicated low recovery (51.5%) for bare NPs, indicating possible NP loss, against 98.8% of recovery for coated NPs. NPs were rather chemically stable, with less than 4% of dissolution. Chironomid larvae ingested large amounts of NPs and were vectors of contamination for amphibian larvae. Although bioaccumulation in amphibian larvae was important (9.47 and 9.74 mg/kg for bare and coated NPs, respectively), no biomagnification occurred through the trophic chain. Finally, significant genotoxicity was observed in amphibian larvae, bare CeO2 NPs being more toxic than citrate-coated NPs. ᅟ.
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Affiliation(s)
- Agathe Bour
- EcoLab, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France.
- International Consortium for the Environmental Implications of Nanotechnology (iCEINT), Aix-en-Provence, France.
| | - Florence Mouchet
- EcoLab, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France
- International Consortium for the Environmental Implications of Nanotechnology (iCEINT), Aix-en-Provence, France
| | - Stéphanie Cadarsi
- EcoLab, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France
- International Consortium for the Environmental Implications of Nanotechnology (iCEINT), Aix-en-Provence, France
| | - Jérôme Silvestre
- EcoLab, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France
- International Consortium for the Environmental Implications of Nanotechnology (iCEINT), Aix-en-Provence, France
| | - David Baqué
- EcoLab, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France
| | - Laury Gauthier
- EcoLab, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France
- International Consortium for the Environmental Implications of Nanotechnology (iCEINT), Aix-en-Provence, France
| | - Eric Pinelli
- EcoLab, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France
- International Consortium for the Environmental Implications of Nanotechnology (iCEINT), Aix-en-Provence, France
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16
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Blankson ER, Deb Adhikary NR, Klerks PL. The effect of lead contamination on bioturbation by Lumbriculus variegatus in a freshwater microcosm. CHEMOSPHERE 2017; 167:19-27. [PMID: 27705809 DOI: 10.1016/j.chemosphere.2016.09.128] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Revised: 09/22/2016] [Accepted: 09/26/2016] [Indexed: 06/06/2023]
Abstract
The present study investigated the effect of lead (Pb) on bioturbation by the oligochaete worm Lumbriculus variegatus, using freshwater microcosms. The experiment used lead at "0", 140, 700, and 3500 μg/g in sediment, and used two different laboratory populations of L. variegatus. A molecular genetic analysis and bioassays were conducted to determine if the two populations differed genetically and whether they differed in Pb-sensitivity. The bioturbation of L. variegatus was estimated using luminophores placed at the sediment-water interface at the beginning of the experiment. After the 14 d experiment the luminophore profiles in sediment were used to estimate the biodiffusion and bioadvection coefficients, using the diffusion-advection model. The results showed that the biodiffusion and bioadvection coefficients were generally negatively related to the Pb concentrations in the sediment. Lead at 700 and 3500 μg/g reduced both coefficients, while Pb at 140 μg/g did not. Luminophore profiles in the "0" and 140 μg/g treatments were indicative of a non-local transport, while a diffusive transport was observed at the higher Pb levels. The two laboratory populations of L. variegatus used in the experiment differed in their sensitivity to Pb when mortality was used as the endpoint, but they did not differ in sediment bioturbation or the Pb-sensitivity of this process. Moreover, the genetic analysis did not detect any genetic differences between the populations. This study demonstrated that elevated levels of Pb can impact ecosystem functioning by decreasing the bioturbation activity of benthic organisms such as L. variegatus.
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Affiliation(s)
- Emmanuel R Blankson
- Department of Biology, University of Louisiana at Lafayette, Lafayette, LA, 70504, USA.
| | - Nihar R Deb Adhikary
- Department of Biology, University of Louisiana at Lafayette, Lafayette, LA, 70504, USA
| | - Paul L Klerks
- Department of Biology, University of Louisiana at Lafayette, Lafayette, LA, 70504, USA
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17
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Crawford SE, Lofts S, Liber K. The role of sediment properties and solution pH in the adsorption of uranium(VI) to freshwater sediments. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2017; 220:873-881. [PMID: 27825841 DOI: 10.1016/j.envpol.2016.10.071] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Revised: 10/24/2016] [Accepted: 10/25/2016] [Indexed: 06/06/2023]
Abstract
Uranium (U) can enter aquatic environments from natural and anthropogenic processes, accumulating in sediments to concentrations that could, if bioavailable, adversely affect benthic organisms. To better predict the sorption and mobility of U in aquatic ecosystems, we investigated the sediment-solution partition coefficients (Kd) of U for nine uncontaminated freshwater sediments with a wide range of physicochemical characteristics over an environmentally relevant pH range. Test solutions were reconstituted to mimic water quality conditions and U(VI) concentrations (0.023-2.3 mg U/L) found downstream of Canadian U mines. Adsorption of U(VI) to each sediment was greatest at pH 6 and 7, and significantly reduced at pH 8. There were significant differences in pH-dependent sorption among sediments with different physicochemical properties, with sorption increasing up until thresholds of 12% total organic carbon, 37% fine fraction (≤50 μm), and 29 g/kg of iron content. The Kd values for U(VI) were predicted using the Windermere Humic Aqueous Model (WHAM) using total U(VI) concentrations, and water and sediment physicochemical parameters. Predicted Kd-U values were generally within a factor of three of the observed values. These results improve the understanding and assessment of U sorption to field sediment, and quantify the relationship with sediment properties that may influence the bioavailability and ecological risk of U-contaminated sediments.
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Affiliation(s)
- Sarah E Crawford
- Toxicology Centre, University of Saskatchewan, 44 Campus Drive, Saskatoon, SK, S7N 5B3, Canada.
| | - Stephen Lofts
- NERC Centre for Ecology and Hydrology, Library Avenue, Bailrigg, Lancaster, LA1 4AP, United Kingdom
| | - Karsten Liber
- Toxicology Centre, University of Saskatchewan, 44 Campus Drive, Saskatoon, SK, S7N 5B3, Canada; School of Environment and Sustainability, 117 Science Place, University of Saskatchewan, Saskatoon, SK, S7N 5C8, Canada; Institute of Loess Plateau, 92 Wucheng Road, Shanxi University, Taiyuan, Shanxi, 030006, PR China.
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18
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Pigneret M, Mermillod-Blondin F, Volatier L, Romestaing C, Maire E, Adrien J, Guillard L, Roussel D, Hervant F. Urban pollution of sediments: Impact on the physiology and burrowing activity of tubificid worms and consequences on biogeochemical processes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 568:196-207. [PMID: 27295592 DOI: 10.1016/j.scitotenv.2016.05.174] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Revised: 05/12/2016] [Accepted: 05/24/2016] [Indexed: 06/06/2023]
Abstract
In urban areas, infiltration basins are designed to manage stormwater runoff from impervious surfaces and allow the settling of associated pollutants. The sedimentary layer deposited at the surface of these structures is highly organic and multicontaminated (mainly heavy metals and hydrocarbons). Only few aquatic species are able to maintain permanent populations in such an extreme environment, including the oligochaete Limnodrilus hoffmeisteri. Nevertheless, the impact of urban pollutants on these organisms and the resulting influence on infiltration basin functioning remain poorly studied. Thus, the aim of this study was to determine how polluted sediments could impact the survival, the physiology and the bioturbation activity of L. hoffmeisteri and thereby modify biogeochemical processes occurring at the water-sediment interface. To this end, we conducted laboratory incubations of worms, in polluted sediments from infiltration basins or slightly polluted sediments from a stream. Analyses were performed to evaluate physiological state and burrowing activity (X-ray micro-tomography) of worms and their influences on biogeochemical processes (nutrient fluxes, CO2 and CH4 degassing rates) during 30-day long experiments. Our results showed that worms exhibited physiological responses to cope with high pollution levels, including a strong ability to withstand the oxidative stress linked to contamination with heavy metals. We also showed that the presence of urban pollutants significantly increased the burrowing activity of L. hoffmeisteri, demonstrating the sensitivity and the relevance of such a behavioural response as biomarker of sediment toxicity. In addition, we showed that X-ray micro-tomography was an adequate technique for accurate and non-invasive three-dimensional investigations of biogenic structures formed by bioturbators. The presence of worms induced stimulations of nutrient fluxes and organic matter recycling (between +100% and 200% of CO2 degassing rate). Nevertheless, these stimulations were comparable within the three sediments, suggesting a low influence of urban contaminants on bioturbation-driven biogeochemical processes under our experimental conditions.
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Affiliation(s)
- M Pigneret
- LEHNA, UMR CNRS 5023, Ecologie des Hydrosystèmes Naturels et Anthropisés, Université de Lyon, Université Lyon 1, ENTPE, 6 rue Raphael Dubois, 69622 Villeurbanne, France.
| | - F Mermillod-Blondin
- LEHNA, UMR CNRS 5023, Ecologie des Hydrosystèmes Naturels et Anthropisés, Université de Lyon, Université Lyon 1, ENTPE, 6 rue Raphael Dubois, 69622 Villeurbanne, France
| | - L Volatier
- LEHNA, UMR CNRS 5023, Ecologie des Hydrosystèmes Naturels et Anthropisés, Université de Lyon, Université Lyon 1, ENTPE, 6 rue Raphael Dubois, 69622 Villeurbanne, France
| | - C Romestaing
- LEHNA, UMR CNRS 5023, Ecologie des Hydrosystèmes Naturels et Anthropisés, Université de Lyon, Université Lyon 1, ENTPE, 6 rue Raphael Dubois, 69622 Villeurbanne, France
| | - E Maire
- MATEIS, UMR CNRS 5510, INSA de Lyon, 25 avenue Jean Capelle, 69621 Villeurbanne, France
| | - J Adrien
- MATEIS, UMR CNRS 5510, INSA de Lyon, 25 avenue Jean Capelle, 69621 Villeurbanne, France
| | - L Guillard
- LEHNA, UMR CNRS 5023, Ecologie des Hydrosystèmes Naturels et Anthropisés, Université de Lyon, Université Lyon 1, ENTPE, 6 rue Raphael Dubois, 69622 Villeurbanne, France
| | - D Roussel
- LEHNA, UMR CNRS 5023, Ecologie des Hydrosystèmes Naturels et Anthropisés, Université de Lyon, Université Lyon 1, ENTPE, 6 rue Raphael Dubois, 69622 Villeurbanne, France
| | - F Hervant
- LEHNA, UMR CNRS 5023, Ecologie des Hydrosystèmes Naturels et Anthropisés, Université de Lyon, Université Lyon 1, ENTPE, 6 rue Raphael Dubois, 69622 Villeurbanne, France
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19
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Al Kaddissi S, Simon O, Elia AC, Gonzalez P, Floriani M, Cavalie I, Camilleri V, Frelon S, Legeay A. How toxic is the depleted uranium to crayfish Procambarus clarkii compared with cadmium? ENVIRONMENTAL TOXICOLOGY 2016; 31:211-223. [PMID: 25213093 DOI: 10.1002/tox.22036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2013] [Revised: 07/31/2014] [Accepted: 08/03/2014] [Indexed: 06/03/2023]
Abstract
Due to a lack of information on the assessment of uranium's (U) toxicity, our work aimed to compare the effects of U on the crayfish Procambarus clarkii with those of the well documented metal: cadmium (Cd). Accumulation and impacts at different levels of biological organization were assessed after acute (40 µM Cd or U; 4-10 days) and chronic (0.1 µM Cd or U; 30-60 days) exposures. The survival rates demonstrated the high tolerance of this species toward both metals and showed that Cd had a greater effect on the sustainability of crayfish. The concentration levels of Cd and U accumulated in gills and hepatopancreas were compared between both conditions. Distinctions in the adsorption capacities and the mobility of the contaminants were suspected. Differences in the detoxification mechanisms of both metals using transmission electron microscopy equiped with an energy dispersive X-ray were also pointed out. In contrast, comparison between the histological structures of contaminated hepatopancreas showed similar symptoms. Principal component analyses revealed different impacts of each metal on the oxidative balance and mitochondria using enzymatic activities and gene expression levels as endpoints. The observation that U seemed to generate more oxidative stress than Cd in our conditions of exposure is discussed.
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Affiliation(s)
- Simone Al Kaddissi
- IRSN/PRP-ENV/SERIS-Laboratory of Biogeochemistry, Biodisponibility and Transfer of Radionuclides (L2BT), BP 3, 13115 Saint-Paul-Lez-Durance, France
- University of Bordeaux1, EPOC, UMR CNRS 5805, F-33120, Arcachon, France
| | - Olivier Simon
- IRSN/PRP-ENV/SERIS-Laboratory of Biogeochemistry, Biodisponibility and Transfer of Radionuclides (L2BT), BP 3, 13115 Saint-Paul-Lez-Durance, France
| | - Antonia Concetta Elia
- Department of Cellular and Environmental Biology, Ecotoxicology Laboratory, University of Perugia, 06123, Perugia, Italy
| | - Patrice Gonzalez
- University of Bordeaux1, EPOC, UMR CNRS 5805, F-33120, Arcachon, France
| | - Magali Floriani
- IRSN/PRP-ENV/SERIS-Laboratory of Biogeochemistry, Biodisponibility and Transfer of Radionuclides (L2BT), BP 3, 13115 Saint-Paul-Lez-Durance, France
| | - Isabelle Cavalie
- IRSN/PRP-ENV/SERIS-Laboratory of Biogeochemistry, Biodisponibility and Transfer of Radionuclides (L2BT), BP 3, 13115 Saint-Paul-Lez-Durance, France
| | - Virginie Camilleri
- IRSN/PRP-ENV/SERIS-Laboratory of Biogeochemistry, Biodisponibility and Transfer of Radionuclides (L2BT), BP 3, 13115 Saint-Paul-Lez-Durance, France
| | - Sandrine Frelon
- IRSN/PRP-ENV/SERIS-Laboratory of Biogeochemistry, Biodisponibility and Transfer of Radionuclides (L2BT), BP 3, 13115 Saint-Paul-Lez-Durance, France
| | - Alexia Legeay
- University of Bordeaux1, EPOC, UMR CNRS 5805, F-33120, Arcachon, France
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20
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Kang Y, Zhang J, Xie H, Guo Z, Li P, Cheng C, Lv L. Enhancement of the performance of constructed wetlands for wastewater treatment in winter: the effect of Tubifex tubifex. RSC Adv 2016. [DOI: 10.1039/c6ra00153j] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An improved constructed wetland (CW) with the addition ofTubifex tubifexin winter was studied in laboratory batch systems. The outcomes of this study indicate that the potential use ofTubifex tubifexcould improve the ecosystem and water purification by CWs in winter.
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Affiliation(s)
- Yan Kang
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse
- School of Environmental Science and Engineering
- Shandong University
- Jinan
- China
| | - Jian Zhang
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse
- School of Environmental Science and Engineering
- Shandong University
- Jinan
- China
| | - Huijun Xie
- Environmental Research Institute
- Shandong University
- Jinan 250100
- China
| | - Zizhang Guo
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse
- School of Environmental Science and Engineering
- Shandong University
- Jinan
- China
| | - Pengfei Li
- Environmental Research Institute
- Shandong University
- Jinan 250100
- China
| | - Cheng Cheng
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse
- School of Environmental Science and Engineering
- Shandong University
- Jinan
- China
| | - Lu Lv
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse
- School of Environmental Science and Engineering
- Shandong University
- Jinan
- China
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21
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Dedeh A, Ciutat A, Lecroart P, Treguer-Delapierre M, Bourdineaud JP. Cadmium sulfide nanoparticles trigger DNA alterations and modify the bioturbation activity of tubificidae worms exposed through the sediment. Nanotoxicology 2015; 10:322-31. [PMID: 26618487 DOI: 10.3109/17435390.2015.1071444] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
To address the impact of cadmium sulfide nanoparticles (CdS NPs) in freshwater ecosystems, aquatic oligochaete Tubifex tubifex were exposed through the sediment to a low dose (0.52 mg of 8 nm in size of CdS NPs/kg) for 20 days using microcosms. Cadmium (Cd) was released from the CdS NPs-contaminated sediment to the water column, and during this period the average concentrations of Cd in the filtered water fraction were 0.026 ± 0.006 µg/L in presence of oligochaetes. Similar experiments with microparticular CdS and cadmium chloride (CdCl2) were simultaneously performed for comparative purposes. CdS NPs exposure triggered various effects on Tubifex worms compared to control, microsized and ionic reference, including modification of genome composition as assessed using RAPD-PCR genotoxicity tests. Bioaccumulation levels showed that CdS NPs were less bioavailable than CdCl2 to oligochaetes and reached 0.08 ± 0.01 µg Cd/g for CdS NPs exposure versus 0.76 ± 0.3 µg Cd/g for CdCl2 exposure (fresh weight). CdS NPs altered worm's behavior by decreasing significantly the bioturbation activity as assessed after the exposure period using conservative fluorescent particulate tracers. This study demonstrated the high potential harm of the CdS nanoparticular form despite its lower bioavailability for Tubifex worms.
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Affiliation(s)
- Amina Dedeh
- a University of Bordeaux, CNRS, UMR EPOC 5805, Arcachon Marine Station, Place du Dr Peyneau , 33120 Arcachon , France
| | - Aurélie Ciutat
- a University of Bordeaux, CNRS, UMR EPOC 5805, Arcachon Marine Station, Place du Dr Peyneau , 33120 Arcachon , France
| | - Pascal Lecroart
- b University of Bordeaux, CNRS, UMR EPOC 5805, Bâtiment B18, Allée Geoffroy Saint-Hilaire , 33615 Pessac , France
| | - Mona Treguer-Delapierre
- c University of Bordeaux, CNRS, UPR 9048, Institute of Chemistry of Condensed Matter of Bordeaux, 87, Avenue du Docteur Schweitzer , 33600 Pessac , France , and
| | - Jean-Paul Bourdineaud
- a University of Bordeaux, CNRS, UMR EPOC 5805, Arcachon Marine Station, Place du Dr Peyneau , 33120 Arcachon , France .,d CRIIGEN , Paris , France
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22
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Bour A, Mouchet F, Cadarsi S, Silvestre J, Verneuil L, Baqué D, Chauvet E, Bonzom JM, Pagnout C, Clivot H, Fourquaux I, Tella M, Auffan M, Gauthier L, Pinelli E. Toxicity of CeO₂ nanoparticles on a freshwater experimental trophic chain: A study in environmentally relevant conditions through the use of mesocosms. Nanotoxicology 2015; 10:245-55. [PMID: 26152687 DOI: 10.3109/17435390.2015.1053422] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The toxicity of CeO2 NPs on an experimental freshwater ecosystem was studied in mesocosm, with a focus being placed on the higher trophic level, i.e. the carnivorous amphibian species Pleurodeles waltl. The system comprised species at three trophic levels: (i) bacteria, fungi and diatoms, (ii) Chironomus riparius larvae as primary consumers and (iii) Pleurodeles larvae as secondary consumers. NP contamination consisted of repeated additions of CeO2 NPs over 4 weeks, to obtain a final concentration of 1 mg/L. NPs were found to settle and accumulate in the sediment. No effects were observed on litter decomposition or associated fungal biomass. Changes in bacterial communities were observed from the third week of NP contamination. Morphological changes in CeO2 NPs were observed at the end of the experiment. No toxicity was recorded in chironomids, despite substantial NP accumulation (265.8 ± 14.1 mg Ce/kg). Mortality (35.3 ± 6.8%) and a mean Ce concentration of 13.5 ± 3.9 mg/kg were reported for Pleurodeles. Parallel experiments were performed on Pleurodeles to determine toxicity pathways: no toxicity was observed by direct or dietary exposures, although Ce concentrations almost reached 100 mg/kg. In view of these results, various toxicity mechanisms are proposed and discussed. The toxicity observed on Pleurodeles in mesocosm may be indirect, due to microorganism's interaction with CeO2 NPs, or NP dissolution could have occurred in mesocosm due to the structural complexity of the biological environment, resulting in toxicity to Pleurodeles. This study strongly supports the importance of ecotoxicological assessment of NPs under environmentally relevant conditions, using complex biological systems.
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Affiliation(s)
- Agathe Bour
- a CNRS, Université de Toulouse, INP, UPS, EcoLab (Laboratoire d'écologie fonctionnelle et environnement) UMR 5245 , ENSAT, Avenue de l'Agrobiopole , Castanet Tolosan , France .,b International Consortium for the Environmental Implications of Nanotechnology (iCEINT) , Aix-en-Provence , France
| | - Florence Mouchet
- a CNRS, Université de Toulouse, INP, UPS, EcoLab (Laboratoire d'écologie fonctionnelle et environnement) UMR 5245 , ENSAT, Avenue de l'Agrobiopole , Castanet Tolosan , France .,b International Consortium for the Environmental Implications of Nanotechnology (iCEINT) , Aix-en-Provence , France
| | - Stéphanie Cadarsi
- a CNRS, Université de Toulouse, INP, UPS, EcoLab (Laboratoire d'écologie fonctionnelle et environnement) UMR 5245 , ENSAT, Avenue de l'Agrobiopole , Castanet Tolosan , France .,b International Consortium for the Environmental Implications of Nanotechnology (iCEINT) , Aix-en-Provence , France
| | - Jérôme Silvestre
- a CNRS, Université de Toulouse, INP, UPS, EcoLab (Laboratoire d'écologie fonctionnelle et environnement) UMR 5245 , ENSAT, Avenue de l'Agrobiopole , Castanet Tolosan , France .,b International Consortium for the Environmental Implications of Nanotechnology (iCEINT) , Aix-en-Provence , France
| | - Laurent Verneuil
- a CNRS, Université de Toulouse, INP, UPS, EcoLab (Laboratoire d'écologie fonctionnelle et environnement) UMR 5245 , ENSAT, Avenue de l'Agrobiopole , Castanet Tolosan , France .,b International Consortium for the Environmental Implications of Nanotechnology (iCEINT) , Aix-en-Provence , France
| | - David Baqué
- a CNRS, Université de Toulouse, INP, UPS, EcoLab (Laboratoire d'écologie fonctionnelle et environnement) UMR 5245 , ENSAT, Avenue de l'Agrobiopole , Castanet Tolosan , France
| | - Eric Chauvet
- c CNRS, Université de Toulouse, INP, UPS, EcoLab (Laboratoire d'écologie fonctionnelle et environnement) UMR 5245 , Toulouse , France
| | - Jean-Marc Bonzom
- b International Consortium for the Environmental Implications of Nanotechnology (iCEINT) , Aix-en-Provence , France .,d Laboratoire de Radioécologie et d'Ecotoxicologie , IRSN (Institut de Radioprotection et de Sûreté Nucléaire), DEI/SECRE , Cadarache , France
| | - Christophe Pagnout
- b International Consortium for the Environmental Implications of Nanotechnology (iCEINT) , Aix-en-Provence , France .,e CNRS, Université de Lorraine, LIEC (Laboratoire Interdisciplinaire des Environnements Continentaux) UMR 7360, Metz, France
| | - Hugues Clivot
- b International Consortium for the Environmental Implications of Nanotechnology (iCEINT) , Aix-en-Provence , France .,e CNRS, Université de Lorraine, LIEC (Laboratoire Interdisciplinaire des Environnements Continentaux) UMR 7360, Metz, France
| | - Isabelle Fourquaux
- f CMEAB (Centre de Microscopie Electronique Appliqué à la Biologie), Université Paul Sabatier, Faculté de Médecine Rangueil , Toulouse , France , and
| | - Marie Tella
- b International Consortium for the Environmental Implications of Nanotechnology (iCEINT) , Aix-en-Provence , France .,g CNRS, Université d'Aix-Marseille, CEREGE UMR 7330 , Aix-en-Provence , France
| | - Mélanie Auffan
- b International Consortium for the Environmental Implications of Nanotechnology (iCEINT) , Aix-en-Provence , France .,g CNRS, Université d'Aix-Marseille, CEREGE UMR 7330 , Aix-en-Provence , France
| | - Laury Gauthier
- a CNRS, Université de Toulouse, INP, UPS, EcoLab (Laboratoire d'écologie fonctionnelle et environnement) UMR 5245 , ENSAT, Avenue de l'Agrobiopole , Castanet Tolosan , France .,b International Consortium for the Environmental Implications of Nanotechnology (iCEINT) , Aix-en-Provence , France
| | - Eric Pinelli
- a CNRS, Université de Toulouse, INP, UPS, EcoLab (Laboratoire d'écologie fonctionnelle et environnement) UMR 5245 , ENSAT, Avenue de l'Agrobiopole , Castanet Tolosan , France .,b International Consortium for the Environmental Implications of Nanotechnology (iCEINT) , Aix-en-Provence , France
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Yusoff AH, Sabuti AA, Mohamed CAR. Natural uranium and thorium isotopes in sediment cores off Malaysian ports. OCEAN SCIENCE JOURNAL 2015; 50:403-412. [DOI: 10.1007/s12601-015-0037-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Liu T, Diao J, Di S, Zhou Z. Bioaccumulation of isocarbophos enantiomers from laboratory-contaminated aquatic environment by tubificid worms. CHEMOSPHERE 2015; 124:77-82. [PMID: 25475969 DOI: 10.1016/j.chemosphere.2014.11.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2014] [Revised: 10/31/2014] [Accepted: 11/06/2014] [Indexed: 06/04/2023]
Abstract
The benthic fauna is of great importance to assess the environmental fate of contaminations in aquatic ecosystem. In this study, tubificids were exposed to both laboratory-contaminated aqueous phases and spiked sediment to study the bioaccumulation of isocarbophos (ICP). Two types of spiked sediments were used in the spiked sediment experiment. During the exposure period, an enantioselective bioaccumulation was found in spiked water treatment, with concentrations of the (-)-ICP higher than that of the (+)-ICP, but no enantioselectivity was detected in the spiked sediment treatments. However, different bioaccumulation patterns were observed in the two spiked sediment treatments. Results showed that for spiked forest field sediment (FF sediment) incubation, bioaccumulation was governed by the concentrations in soil. Whereas ICP was bioaccumulated dominantly from overlying water in spiked Chagan Lake sediment (CG sediment) test. The dissipation rates were proved different in the two sediments and ICP dissipated much faster in CG sediment than that in FF sediment. Significant difference in ICP's half-life was also observed between worm-present and worm-free treatments in FF sediment. The detections of concentrations in overlying water indicated that much more ICP diffused to aquatic phase with the present of tubificids.
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Affiliation(s)
- Tiantian Liu
- Key Laboratory of Water and Sediment Sciences, Ministry of Education, Department of Environmental Engineering, Peking University, Beijing 100871, PR China
| | - Jinling Diao
- Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West road 2, Beijing 100193, PR China.
| | - Shanshan Di
- Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West road 2, Beijing 100193, PR China
| | - Zhiqiang Zhou
- Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West road 2, Beijing 100193, PR China
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Schaller J. Bioturbation/bioirrigation by Chironomus plumosus as main factor controlling elemental remobilization from aquatic sediments? CHEMOSPHERE 2014; 107:336-343. [PMID: 24457053 DOI: 10.1016/j.chemosphere.2013.12.086] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2013] [Revised: 12/19/2013] [Accepted: 12/20/2013] [Indexed: 06/03/2023]
Abstract
Aquatic sediments represent a possibly significant sink of soluble inorganic elements/pollutants (metals, metalloids and rare earth elements) in ecosystems. Bioturbation/bioirrigation was shown to affect the remobilization of some elements where others seem to be unaffected. In view of these contrasting results, the effect of bioturbation/bioirrigation was examined using the invertebrate Chironomus plumosus in a laboratory experiment for a broad range (18) of elements. The experiments revealed an impact of invertebrate bioturbation/bioirrigation on elemental remobilization depending on chemical characteristics of the element ranging from strong influence to influence only at start when the larvae dig into the sediments. Three different types of remobilization were found: (i) element mobilization highly influenced by bioturbation/bioirrigation (DOC, N, Mg, Ca, Sr, Mo and U), (ii) strong element mobilization by bioturbation/bioirrigation at the start of the experiment when the larvae dig into the sediments and afterwards strong decrease, but to higher levels compared to values of treatments without invertebrate impact (Mn, Ni, As, Cd and Cs), and (iii) strong element mobilization by bioturbation/bioirrigation at start when the larvae dig into the sediments and afterwards strong decrease to levels found in treatments without invertebrate impact (Al, Fe, Co, Cu, Zn and Ce). During the experiment a distinct accumulation of most of the elements in C. plumosus was found, where they were not so much bound to the outer surface of C. plumosus but more within the gut system including food and feces. Hence, bioturbation/bioirrigation is certainly a main process controlling mobilization of elements from sediments.
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Affiliation(s)
- Jörg Schaller
- Institute of General Ecology and Environmental Protection, Technische Universität Dresden, PF 1117, 01737 Tharandt, Germany.
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Mosleh YY, Mofeed J, Afifi M, Almaghrabi OA. Biological effects of pyrimethinal on aquatic worms (Tubifex tubifex) under laboratory conditions. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2014; 92:85-89. [PMID: 24213591 DOI: 10.1007/s00128-013-1153-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2013] [Accepted: 11/04/2013] [Indexed: 06/02/2023]
Abstract
Laboratory studies were conducted to determine the effects of different concentrations of pyrimethinal on protein contents, and some oxidative stress in Tubifex tubifex after an exposure of 2, 4, and 7 days. Residues of the fungicide were followed in water and in the worms. In water, pyrimethinal concentration decreased slowly (maximum -6.4 % ± 0.8 % after 2 days for 25 mg L(-1)). In the worms, it increased after 4 days and decreased thereafter. LC50 values were between 49.2 ± 0.58 and 39.5 ± 0.95 mg L(-1) depending on exposure time. The activity of catalase increased in response to the fungicide after 2 days of exposure to 25 mg L(-1) of pyrimethinal (+90 %). The highest decrease of glutathione-S-transferase activity (-29.7 %) was found after 7 days in the presence of 25 mg L(-1).
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Affiliation(s)
- Yahia Youssef Mosleh
- Biological Science Department, Faculty of Science, North Jeddah, King Abdul Aziz University, Jeddah, 21589, KSA,
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27
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Burnett-Seidel C, Liber K. Derivation of no-effect and reference-level sediment quality values for application at Saskatchewan uranium operations. ENVIRONMENTAL MONITORING AND ASSESSMENT 2013; 185:9481-9494. [PMID: 23877572 DOI: 10.1007/s10661-013-3267-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2013] [Accepted: 05/17/2013] [Indexed: 06/02/2023]
Abstract
To date, the majority of empirical approaches used to derive sediment quality values (SQVs) have focused on metal concentrations in sediment associated with adverse effects on benthic invertebrate communities. Here, we propose the no-effect (NE) approach. This SQV derivation methodology uses metal concentrations in sediment associated with unaffected benthic communities (i.e., from reference sites and lightly contaminated no-effect sites) and accounts for local benthic invertebrate tolerance and potential chemical interactions at no-effect exposure sites. This NE approach was used to propose alternative regional SQVs for uranium operations in northern Saskatchewan. Three different sets of NE values were derived using different combinations of benthic invertebrate community effects criteria (abundance, richness, evenness, Bray-Curtis index). Additionally, reference values were derived based solely on sediment metal concentrations from reference sites. In general, NE values derived using abundance, richness, and evenness (NE1 and NE2 values) were found to be higher than the NE values derived using all four metrics (NE3 values). Derived NE values for Cr, Cu, Pb, and V did not change with the incorporation of additional effects criteria due to a lack of influence from the uranium operations on the concentrations of these metals in sediment. However, a gradient of exposure concentrations was apparent for As, Mo, Ni, Se, and U in sediment which allowed for tolerable exposure levels of these metals in sediment to be defined. The findings from this assessment have suggested a range of new, alternate metal SQVs for use at uranium operations in northern Saskatchewan.
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Affiliation(s)
- Charlene Burnett-Seidel
- Toxicology Centre, University of Saskatchewan, 44 Campus Drive, Saskatoon, SK, S7N 5B3, Canada,
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Poulsen M, Kofoed MVW, Larsen LH, Schramm A, Stief P. Chironomus plumosus larvae increase fluxes of denitrification products and diversity of nitrate-reducing bacteria in freshwater sediment. Syst Appl Microbiol 2013; 37:51-9. [PMID: 24054696 DOI: 10.1016/j.syapm.2013.07.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2013] [Revised: 07/21/2013] [Accepted: 07/23/2013] [Indexed: 11/27/2022]
Abstract
Benthic invertebrates affect microbial processes and communities in freshwater sediment by enhancing sediment-water solute fluxes and by grazing on bacteria. Using microcosms, the effects of larvae of the widespread midge Chironomus plumosus on the efflux of denitrification products (N2O and N2+N2O) and the diversity and abundance of nitrate- and nitrous-oxide-reducing bacteria were investigated. Additionally, the diversity of actively nitrate- and nitrous-oxide-reducing bacteria was analyzed in the larval gut. The presence of larvae increased the total effluxes of N2O and N2+N2O up to 8.6- and 4.2-fold, respectively, which was mostly due to stimulation of sedimentary denitrification; incomplete denitrification in the guts accounted for up to 20% of the N2O efflux. Phylotype richness of the nitrate reductase gene narG was significantly higher in sediment with than without larvae. In the gut, 47 narG phylotypes were found expressed, which may contribute to higher phylotype richness in colonized sediment. In contrast, phylotype richness of the nitrous oxide reductase gene nosZ was unaffected by the presence of larvae and very few nosZ phylotypes were expressed in the gut. Gene abundance of neither narG, nor nosZ was different in sediments with and without larvae. Hence, C. plumosus increases activity and diversity, but not overall abundance of nitrate-reducing bacteria, probably by providing additional ecological niches in its burrow and gut.
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Affiliation(s)
- Morten Poulsen
- Department of Bioscience, Microbiology, Aarhus University, Ny Munkegade 114, 8000 Århus C, Denmark
| | - Michael V W Kofoed
- Department of Bioscience, Microbiology, Aarhus University, Ny Munkegade 114, 8000 Århus C, Denmark
| | - Lone H Larsen
- Department of Bioscience, Microbiology, Aarhus University, Ny Munkegade 114, 8000 Århus C, Denmark
| | - Andreas Schramm
- Department of Bioscience, Microbiology, Aarhus University, Ny Munkegade 114, 8000 Århus C, Denmark
| | - Peter Stief
- Department of Bioscience, Microbiology, Aarhus University, Ny Munkegade 114, 8000 Århus C, Denmark; Max-Planck-Institute for Marine Microbiology, Microsensor Group, Celsiusstraße 1, 28359 Bremen, Germany.
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Mermillod-Blondin F, Foulquier A, Gilbert F, Navel S, Montuelle B, Bellvert F, Comte G, Grossi V, Fourel F, Lecuyer C, Simon L. Benzo(a)pyrene inhibits the role of the bioturbator Tubifex tubifex in river sediment biogeochemistry. THE SCIENCE OF THE TOTAL ENVIRONMENT 2013; 450-451:230-241. [PMID: 23500821 DOI: 10.1016/j.scitotenv.2013.02.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2012] [Revised: 02/06/2013] [Accepted: 02/08/2013] [Indexed: 06/01/2023]
Abstract
The interactions between invertebrates and micro-organisms living in streambed sediments often play key roles in the regulation of nutrient and organic matter fluxes in aquatic ecosystems. However, benthic sediments also constitute a privileged compartment for the accumulation of persistent organic pollutants such as PAHs or PCBs that may affect the diversity, abundance and activity of benthic organisms. The objective of this study was to quantify the impact of sediment contamination with the PAH benzo(a)pyrene on the interaction between micro-organisms and the tubificid worm, Tubifex tubifex, which has been recognized as a major bioturbator in freshwater sediments. Sedimentary microcosms (slow filtration columns) contaminated or not with benzo(a)pyrene (3 tested concentrations: 0, 1 and 5 mg kg(-1)) at the sediment surface were incubated under laboratory conditions in the presence (100 individuals) or absence of T. tubifex. Although the surface sediment contaminations with 1 mg kg(-1) and 5 mg kg(-1) of benzo(a)pyrene did not affect tubificid worm survival, these contaminations significantly influenced the role played by T. tubifex in biogeochemical processes. Indeed, tubificid worms stimulated aerobic respiration, denitrification, dehydrogenase and hydrolytic activities of micro-organisms in uncontaminated sediments whereas such effects were inhibited in sediments polluted with benzo(a)pyrene. This inhibition was due to contaminant-induced changes in bioturbation (and especially bio-irrigation) activities of worms and their resulting effects on microbial processes. This study reveals the importance of sublethal concentrations of a contaminant on ecological processes in river sediments through affecting bioturbator-microbe interactions. Since they affect microbial processes involved in water purification processes, such impacts of sublethal concentrations of pollutants should be more often considered in ecosystem health assessment.
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Affiliation(s)
- F Mermillod-Blondin
- Université de Lyon, UMR5023 Ecologie des Hydrosystèmes Naturels et Anthropisés, Université Lyon 1, ENTPE, CNRS, 6 rue Raphaël Dubois, 69622 Villeurbanne, France.
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Lagauzére S, Coppin F, Gerino M, Delmotte S, Stora G, Bonzom JM. An alternative method of particulate fluorescent tracer analysis in sediments using a microplate fluorimeter. ENVIRONMENTAL TECHNOLOGY 2011; 32:551-560. [PMID: 21877536 DOI: 10.1080/09593330.2010.505251] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Conservative particulate fluorescent tracers (e.g. luminophores and microspheres) are commonly used in a wide range of sediment transport studies. Traditionally, their spatial redistribution is estimated by counting them in sediments under ultraviolet light (e.g. by epifluorescence microscopy), a time-consuming but effective method. While alternative methods have recently been developed (e.g. photodetection, digital image analyses), this 'classical' counting method remains the most commonly used. This article describes an alternative procedure for measuring the concentration of fluorescent tracers (here, microspheres) using a microplate fluorimeter. This technique enables simultaneous analysis of numerous samples while reducing the sediment preparation and quantification time. After a calibration step from sediment samples with known microsphere content, the method was validated by comparing results from the epifluorescence microscopy method. Different adjustments were also reported, as well as application examples. The different calibration tests showed high linear relationships between the microsphere concentration of sediment samples and the measured fluorimetric intensities (R2-0.99) with a detection limit of 6%. In comparison with the previously used method, very similar results were obtained, as illustrated in recent studies using both luminophores and microspheres. The rapid and reliable method proposed here will enable increasingly complex experiments to be performed with less time-consuming qualitative analyses.
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Affiliation(s)
- S Lagauzére
- Laboratoire de Radioécologie et d'Ecotoxicologie, Institut de Radioprotection et de Sûreté Nucléaire, DEI/SECRE/LRE, Saint Paul Lez Durance, France.
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