1
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Heß S, Hof D, Oetken M, Sundermann A. Macroinvertebrate communities respond strongly but non-specifically to a toxicity gradient derived by effect-based methods. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 356:124330. [PMID: 38848961 DOI: 10.1016/j.envpol.2024.124330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 06/03/2024] [Accepted: 06/04/2024] [Indexed: 06/09/2024]
Abstract
Chemical pollution is one of the most important threats to freshwater ecosystems. The plethora of potentially occurring chemicals and their effects in complex mixtures challenge standard monitoring methods. Effect-based methods (EBMs) are proposed as complementary tools for the assessment of chemical pollution and toxic effects. To investigate the effects of chemical pollution, the ecological relevance of EBMs and the potential of macroinvertebrates as toxicity-specific bioindicators, ecological and ecotoxicological data were linked. Baseline toxicity, mutagenicity, dioxin-like and estrogenic activity of water and sediment samples from 30 river sites in central Germany were quantified with four in vitro bioassays. The responses of macroinvertebrate communities at these sites were assessed by calculating 16 taxonomic and functional metrics and by investigating changes in the taxonomic and trait composition. Principal component analysis revealed an increase in toxicity along a joint gradient of chemicals with different modes of action. This toxicity gradient was associated with a decrease in biodiversity and ecological quality, as well as significant changes in taxonomic and functional composition. The strength of the effects suggested a strong impact of chemical pollution and underlined the suitability of EBMs in detecting ecological relevant effects. However, the metrics, taxa, and traits associated with vulnerability or tolerance to toxicity were found to also respond to other stressors in previous studies and thus may have only a low potential as toxicity-specific bioindicators. Because macroinvertebrates respond integratively to all present stressors, linking both ecological and environmental monitoring is necessary to investigate the overall effects but also isolate individual stressors. EBMs have a high potential to separate the toxicity of chemical mixtures from other stressors in a multiple stressor scenario, as well as identifying the presence of chemical groups with specific modes of action.
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Affiliation(s)
- Sebastian Heß
- Senckenberg Research Institute and Natural History Museum Frankfurt, Department of River Ecology and Conservation, Clamecystr. 12, 63571, Gelnhausen, Germany; Goethe University Frankfurt, Faculty Biological Sciences, Institute of Ecology, Evolution and Diversity, Max-von-Laue-Str. 13, 60438, Frankfurt am Main, Germany.
| | - Delia Hof
- Goethe University Frankfurt, Faculty Biological Sciences, Department Aquatic Ecotoxicology, Max-von-Laue-Str. 13, 60438, Frankfurt am Main, Germany
| | - Matthias Oetken
- Goethe University Frankfurt, Faculty Biological Sciences, Department Aquatic Ecotoxicology, Max-von-Laue-Str. 13, 60438, Frankfurt am Main, Germany; Kompetenzzentrum Wasser Hessen, Max-von-Laue-Straße 13, 60438, Frankfurt am Main, Germany
| | - Andrea Sundermann
- Senckenberg Research Institute and Natural History Museum Frankfurt, Department of River Ecology and Conservation, Clamecystr. 12, 63571, Gelnhausen, Germany; Goethe University Frankfurt, Faculty Biological Sciences, Institute of Ecology, Evolution and Diversity, Max-von-Laue-Str. 13, 60438, Frankfurt am Main, Germany; Kompetenzzentrum Wasser Hessen, Max-von-Laue-Straße 13, 60438, Frankfurt am Main, Germany
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2
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Bundschuh M, Mesquita-Joanes F, Rico A, Camacho A. Understanding Ecological Complexity in a Chemical Stress Context: A Reflection on Recolonization, Recovery, and Adaptation of Aquatic Populations and Communities. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2023; 42:1857-1866. [PMID: 37204216 DOI: 10.1002/etc.5677] [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: 02/18/2023] [Revised: 04/17/2023] [Accepted: 05/15/2023] [Indexed: 05/20/2023]
Abstract
Recovery, recolonization, and adaptation in a chemical stress context are processes that regenerate local populations and communities as well as the functions these communities perform. Recolonization, either by species previously present or by new species able to occupy the niches left empty, refers to a metacommunity process with stressed ecosystems benefiting from the dispersal of organisms from other areas. A potential consequence of recolonization is a limited capacity of local populations to adapt to potentially repeating events of chemical stress exposure when their niches have been effectively occupied by the new colonizers or by new genetic lineages of the taxa previously present. Recovery, instead, is an internal process occurring within stressed ecosystems. More specifically, the impact of a stressor on a community benefits less sensitive individuals of a local population as well as less sensitive taxa within a community. Finally, adaptation refers to phenotypic and, sometimes, genetic changes at the individual and population levels, allowing the permanence of individuals of previously existing taxa without necessarily changing the community taxonomic composition (i.e., not replacing sensitive species). Because these processes are usually operating in parallel in nature, though at different degrees, it seems relevant to try to understand their relative importance for the regeneration of community structure and ecosystem functioning after chemical exposure. In the present critical perspective, we employed case studies supporting our understanding of the underlying processes with the hope to provide a theoretical framework to disentangle the relevance of the three processes for the regeneration of a biological community after chemical exposure. Finally, we provide some recommendations to experimentally compare their relative importance so that the net effects of these processes can be used to parameterize risk-assessment models and inform ecosystem management. Environ Toxicol Chem 2023;42:1857-1866. © 2023 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.
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Affiliation(s)
- Mirco Bundschuh
- iES Landau, Institute for Environmental Sciences, RPTU Kaiserslautern-Landau, Landau, Germany
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Francesc Mesquita-Joanes
- Cavanilles Institute of Biodiversity and Evolutionary Biology, University of Valencia, València, Spain
| | - Andreu Rico
- Cavanilles Institute of Biodiversity and Evolutionary Biology, University of Valencia, València, Spain
- IMDEA Water Institute, Science and Technology Campus of the University of Alcalá, Madrid, Spain
| | - Antonio Camacho
- Cavanilles Institute of Biodiversity and Evolutionary Biology, University of Valencia, València, Spain
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3
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Wu J, Liu C, Wang R, Yan S, Chen B, Zhu X. Enhanced bacterial adhesion force by rifampicin resistance promotes microbial colonization on PE plastic compared to non-resistant biofilm formation. WATER RESEARCH 2023; 242:120319. [PMID: 37441870 DOI: 10.1016/j.watres.2023.120319] [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: 04/19/2023] [Revised: 06/30/2023] [Accepted: 07/04/2023] [Indexed: 07/15/2023]
Abstract
The microbial biofilm formed on plastics, is ubiquitous in the environment. However, the effects of antibiotic resistance on the development of the biofilm on plastics, especially with regard to initial cell attachment, remain unclear. In this study, we investigated the initial bacterial adhesion and subsequent biofilm growth of a rifampin (Rif) resistant E. coli (RRE) and a normal gram-positive B. subtilis on a typical plastic (polyethylene, PE). The experiments were conducted in different antibiotic solutions, including Rif, sulfamethoxazole (SMX), and kanamycin (KM), with concentrations ranging from 1 to 1000 μg/L to simulate different aquatic environments. The AFM-based single-cell adhesion force determination revealed that Rif resistance strengthened the adhesion force of RRE to PE in the environment rich in Rif rather than SMX and KM. The enhanced adhesion force may be due to the higher secretion of extracellular polymeric substances (EPS), particularly proteins, by RRE in the presence of Rif compared to the other two antibiotics. In addition, the higher ATP level of RRE would facilitate the initial adhesion and subsequent biofilm growth. Transcriptome analysis of RRE separately cultured in Rif and SMX environments demonstrated a clear correlation between the expression of Rif resistance and the augmented bacterial adhesion and cellular activity. Biofilm biomass analysis confirmed the promotion effect of Rif resistance on biofilm growth when compared to non-resistant biofilms, establishing a novel association with the augmentation of microbial adhesion force. Our study highlights concerns related to the dissemination of antibiotic resistance during microbial colonization on plastic that may arise from antibiotic resistance.
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Affiliation(s)
- Jiayi Wu
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Congcong Liu
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Rui Wang
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Saitao Yan
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Baoliang Chen
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Xiaoying Zhu
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, China.
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4
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Lafuente E, Carles L, Walser J, Giulio M, Wullschleger S, Stamm C, Räsänen K. Effects of anthropogenic stress on hosts and their microbiomes: Treated wastewater alters performance and gut microbiome of a key detritivore (
Asellus aquaticus
). Evol Appl 2023; 16:824-848. [PMID: 37124094 PMCID: PMC10130563 DOI: 10.1111/eva.13540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 01/24/2023] [Accepted: 02/17/2023] [Indexed: 04/03/2023] Open
Abstract
Human activity is a major driver of ecological and evolutionary change in wild populations and can have diverse effects on eukaryotic organisms as well as on environmental and host-associated microbial communities. Although host-microbiome interactions can be a major determinant of host fitness, few studies consider the joint responses of hosts and their microbiomes to anthropogenic changes. In freshwater ecosystems, wastewater is a widespread anthropogenic stressor that represents a multifarious environmental perturbation. Here, we experimentally tested the impact of treated wastewater on a keystone host (the freshwater isopod Asellus aquaticus) and its gut microbiome. We used a semi-natural flume experiment, in combination with 16S rRNA amplicon sequencing, to assess how different concentrations (0%, 30%, and 80%) of nonfiltered wastewater (i.e. with chemical toxicants, nutrients, organic particles, and microbes) versus ultrafiltered wastewater (i.e. only dissolved pollutants and nutrients) affected host survival, growth, and food consumption as well as mid- and hindgut bacterial community composition and diversity. Our results show that while host survival was not affected by the treatments, host growth increased and host feeding rate decreased with nonfiltered wastewater - potentially indicating that A. aquaticus fed on organic matter and microbes available in nonfiltered wastewater. Furthermore, even though the midgut microbiome (diversity and composition) was not affected by any of our treatments, nonfiltered wastewater influenced bacterial composition (but not diversity) in the hindgut. Ultrafiltered wastewater, on the other hand, affected both community composition and bacterial diversity in the hindgut, an effect that in our system differed between sexes. While the functional consequences of microbiome changes and their sex specificity are yet to be tested, our results indicate that different components of multifactorial stressors (i.e. different constituents of wastewater) can affect hosts and their microbiome in distinct (even opposing) manners and have a substantial impact on eco-evolutionary responses to anthropogenic stressors.
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Affiliation(s)
- Elvira Lafuente
- Eawag: Swiss Federal Institute of Aquatic Science and TechnologyDübendorfSwitzerland
- Instituto Gulbenkian de CiênciaOeirasPortugal
| | - Louis Carles
- Eawag: Swiss Federal Institute of Aquatic Science and TechnologyDübendorfSwitzerland
| | - Jean‐Claude Walser
- Department of Environmental Systems Science D‐USYS, Genetic Diversity CentreSwiss Federal Institute of Technology (ETH), ZürichZürichSwitzerland
| | - Marco Giulio
- Eawag: Swiss Federal Institute of Aquatic Science and TechnologyDübendorfSwitzerland
| | - Simon Wullschleger
- Eawag: Swiss Federal Institute of Aquatic Science and TechnologyDübendorfSwitzerland
| | - Christian Stamm
- Eawag: Swiss Federal Institute of Aquatic Science and TechnologyDübendorfSwitzerland
| | - Katja Räsänen
- Eawag: Swiss Federal Institute of Aquatic Science and TechnologyDübendorfSwitzerland
- Department of Biological and Environmental ScienceUniversity of JyväskyläJyväskyläFinland
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5
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Synthetic periphyton as a model system to understand species dynamics in complex microbial freshwater communities. NPJ Biofilms Microbiomes 2022; 8:61. [PMID: 35869094 PMCID: PMC9307524 DOI: 10.1038/s41522-022-00322-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 07/01/2022] [Indexed: 11/09/2022] Open
Abstract
AbstractPhototrophic biofilms, also known as periphyton, are microbial freshwater communities that drive crucial ecological processes in streams and lakes. Gaining a deep mechanistic understanding of the biological processes occurring in natural periphyton remains challenging due to the high complexity and variability of such communities. To address this challenge, we rationally developed a workflow to construct a synthetic community by co-culturing 26 phototrophic species (i.e., diatoms, green algae, and cyanobacteria) that were inoculated in a successional sequence to create a periphytic biofilm on glass slides. We show that this community is diverse, stable, and highly reproducible in terms of microbial composition, function, and 3D spatial structure of the biofilm. We also demonstrate the ability to monitor microbial dynamics at the single species level during periphyton development and how their abundances are impacted by stressors such as increased temperature and a herbicide, singly and in combination. Overall, such a synthetic periphyton, grown under controlled conditions, can be used as a model system for theory testing through targeted manipulation.
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6
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Sheng Y, Benmati M, Guendouzi S, Benmati H, Yuan Y, Song J, Xia C, Berkani M. Latest eco-friendly approaches for pesticides decontamination using microorganisms and consortia microalgae: A comprehensive insights, challenges, and perspectives. CHEMOSPHERE 2022; 308:136183. [PMID: 36058371 DOI: 10.1016/j.chemosphere.2022.136183] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 08/13/2022] [Accepted: 08/20/2022] [Indexed: 06/15/2023]
Abstract
Pesticides are chemical compounds that are considered toxic to many organisms, including humans. Their elimination from polluted sites attracted the attention of Scientifics in the last decade; Among the various methods used to decontaminate pesticides from the environment, the microbial-algae consortium is a promising bioremediation technology, which implies several advantages as an eco-friendly process that generate biomass produced that could be valorized in the form of bioenergy, In this review, we will discuss the latest eco-friendly approaches using microorganisms to remediate sites contaminated by pesticides, and shows the ability of microbial, algae and their consortium to remove pesticides and the role of different enzymes in degradation processes.
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Affiliation(s)
- Yequan Sheng
- College of Biological and Food Engineering, Anhui Polytechnic University, Wuhu, Anhui, 241000, China; Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu, 210037, China
| | - Mahbouba Benmati
- Biotechnology Laboratory, National Higher School of Biotechnology, BP E66, 25100, Constantine, Algeria
| | - Salma Guendouzi
- Biotechnology Laboratory, National Higher School of Biotechnology, BP E66, 25100, Constantine, Algeria
| | - Hadjer Benmati
- Laboratoire de Biologie et Environnement, Campus Chaab-Erssas, Biopole Université des Frères Mentouri Constantine 1, Ain Bey, 25000 Constantine Algeria
| | - Yan Yuan
- School of Chemistry and Life Science, Suzhou University of Science and Technology, Suzhou, Jiangsu, 215009, PR China
| | - Junlong Song
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu, 210037, China
| | - Changlei Xia
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu, 210037, China.
| | - Mohammed Berkani
- Biotechnology Laboratory, National Higher School of Biotechnology, BP E66, 25100, Constantine, Algeria.
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7
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Carles L, Wullschleger S, Joss A, Eggen RIL, Schirmer K, Schuwirth N, Stamm C, Tlili A. Wastewater microorganisms impact microbial diversity and important ecological functions of stream periphyton. WATER RESEARCH 2022; 225:119119. [PMID: 36170769 DOI: 10.1016/j.watres.2022.119119] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 07/20/2022] [Accepted: 09/13/2022] [Indexed: 06/16/2023]
Abstract
Effluents of wastewater treatment plants can impact microbial communities in the receiving streams. However, little is known about the role of microorganisms in wastewater as opposed to other wastewater constituents, such as nutrients and micropollutants. We aimed therefore at determining the impact of wastewater microorganisms on the microbial diversity and function of periphyton, key microbial communities in streams. We used a flow-through channel system to grow periphyton upon exposure to a mixture of stream water and unfiltered or ultra-filtered wastewater. Impacts were assessed on periphyton biomass, activities and tolerance to micropollutants, as well as on microbial diversity. Our results showed that wastewater microorganisms colonized periphyton and modified its community composition, resulting for instance in an increased abundance of Chloroflexi and a decreased abundance of diatoms and green algae. This led to shifts towards heterotrophy, as suggested by the changes in nutrient stoichiometry and the increased mineralization potential of carbon substrates. An increased tolerance towards micropollutants was only found for periphyton exposed to unfiltered wastewater but not to ultra-filtered wastewater, suggesting that wastewater microorganisms were responsible for this increased tolerance. Overall, our results highlight the need to consider the role of wastewater microorganisms when studying potential impacts of wastewater on the receiving water body.
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Affiliation(s)
- Louis Carles
- Eawag: Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland
| | - Simon Wullschleger
- Eawag: Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland
| | - Adriano Joss
- Eawag: Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland
| | - Rik I L Eggen
- Eawag: Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland; Department of Environmental Systems Science, ETH, Zürich, Switzerland
| | - Kristin Schirmer
- Eawag: Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland; Department of Environmental Systems Science, ETH, Zürich, Switzerland; School of Architecture, Civil and Environmental Engineering, EPFL Lausanne, Lausanne, Switzerland
| | - Nele Schuwirth
- Eawag: Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland; Department of Environmental Systems Science, ETH, Zürich, Switzerland
| | - Christian Stamm
- Eawag: Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland
| | - Ahmed Tlili
- Eawag: Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland; Department of Environmental Systems Science, ETH, Zürich, Switzerland.
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8
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Desiante WL, Carles L, Wullschleger S, Joss A, Stamm C, Fenner K. Wastewater microorganisms impact the micropollutant biotransformation potential of natural stream biofilms. WATER RESEARCH 2022; 217:118413. [PMID: 35504081 DOI: 10.1016/j.watres.2022.118413] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 03/31/2022] [Accepted: 04/04/2022] [Indexed: 06/14/2023]
Abstract
Biotransformation is the most important process removing manmade chemicals from the environment, yet mechanisms governing this essential ecosystem function are underexplored. To understand these mechanisms, we conducted experiments in flow-through systems, by colonizing stream biofilms under different conditions of mixing river water with treated (and ultrafiltered) wastewater. We performed biotransformation experiments with those biofilms, using a set of 75 micropollutants, and could disentangle potential mechanisms determining the biotransformation potential of stream biofilms. We showed that the increased biotransformation potential downstream of wastewater treatment plants that we observed for specific micropollutants contained in household wastewaters (downstream effect) is caused by microorganisms released with the treated effluent, rather than by the in-stream exposure to those micropollutants. Complementary data from 16S rRNA amplicon-sequencing revealed 146 amplicon sequence variants (ASVs) that followed the observed biotransformation patterns. Our results align with findings for community tolerance, and provide clear experimental evidence that microorganisms released with treated wastewater integrate into downstream biofilms and impact crucial ecosystem functions.
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Affiliation(s)
- Werner L Desiante
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dübendorf, Switzerland; Institute of Biogeochemistry and Pollutant Dynamics, ETH Zürich, 8092 Zürich, Switzerland
| | - Louis Carles
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dübendorf, Switzerland
| | - Simon Wullschleger
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dübendorf, Switzerland
| | - Adriano Joss
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dübendorf, Switzerland
| | - Christian Stamm
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dübendorf, Switzerland; Institute of Biogeochemistry and Pollutant Dynamics, ETH Zürich, 8092 Zürich, Switzerland
| | - Kathrin Fenner
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dübendorf, Switzerland; Institute of Biogeochemistry and Pollutant Dynamics, ETH Zürich, 8092 Zürich, Switzerland; Department of Chemistry, University of Zürich, 8057 Zürich, Switzerland.
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9
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Lauper B, Anthamatten E, Raths J, Arlos M, Hollender J. Systematic Underestimation of Pesticide Burden for Invertebrates under Field Conditions: Comparing the Influence of Dietary Uptake and Aquatic Exposure Dynamics. ACS ENVIRONMENTAL AU 2022; 2:166-175. [PMID: 37101586 PMCID: PMC10114668 DOI: 10.1021/acsenvironau.1c00023] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 04/28/2023]
Abstract
Pesticides used in agriculture can end up in nearby streams and can have a negative impact on nontarget organisms such as aquatic invertebrates. During registration, bioaccumulation potential is often investigated using laboratory tests only. Recent studies showed that the magnitude of bioaccumulation in the field substantially differs from laboratory conditions. To investigate this discrepancy, we conducted a field bioaccumulation study in a stream known to receive pollutant loadings from agriculture. Our work incorporates measurements of stream pesticide concentrations at high temporal resolution (every 20 min), as well as sediment, leaves, and caged gammarid analyses (every 2-24 h) over several weeks. Of 49 investigated pesticides, 14 were detected in gammarids with highly variable concentrations of up to 140 ± 28 ng/gww. Toxicokinetic modeling using laboratory-derived uptake and depuration rate constants for azoxystrobin, cyprodinil, and fluopyram showed that despite the highly resolved water concentrations measured, the pesticide burden on gammarids remains underestimated by a factor of 1.9 ± 0.1 to 31 ± 3.0, with the highest underestimations occurring after rain events. Including dietary uptake from polluted detritus leaves and sediment in the model explained this underestimation only to a minor proportion. However, suspended solids analyzed during rain events had high pesticide concentrations, and uptake from them could partially explain the underestimation after rain events. Additional comparison between the measured and modeled data showed that the pesticide depuration in gammarids is slower in the field. This observation suggests that several unknown mechanisms may play a role, including lowered enzyme expression and mixture effects. Thus, it is important to conduct such retrospective risk assessments based on field investigations and adapt the registration accordingly.
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Affiliation(s)
- Benedikt
B. Lauper
- Department
of Environmental Chemistry, Eawag, 8600 Dübendorf, Switzerland
- Institute
of Biogeochemistry and Pollutant Dynamics, ETH Zürich, 8092 Zürich, Switzerland
| | - Eva Anthamatten
- Department
of Environmental Chemistry, Eawag, 8600 Dübendorf, Switzerland
- Institute
of Biogeochemistry and Pollutant Dynamics, ETH Zürich, 8092 Zürich, Switzerland
| | - Johannes Raths
- Department
of Environmental Chemistry, Eawag, 8600 Dübendorf, Switzerland
- Institute
of Biogeochemistry and Pollutant Dynamics, ETH Zürich, 8092 Zürich, Switzerland
| | - Maricor Arlos
- Department
of Environmental Chemistry, Eawag, 8600 Dübendorf, Switzerland
- Department
of Civil and Environmental Engineering, University of Alberta, 9211-116 St. NW, Edmonton, T6G 1H9 AB, Canada
| | - Juliane Hollender
- Department
of Environmental Chemistry, Eawag, 8600 Dübendorf, Switzerland
- Institute
of Biogeochemistry and Pollutant Dynamics, ETH Zürich, 8092 Zürich, Switzerland
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10
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Zhao Y, Zhang R, Jing L, Wang W. Performance of basalt fiber-periphyton in deep-level nutrient removal: A study concerned periphyton cultivation, characterization and application. CHEMOSPHERE 2022; 291:133044. [PMID: 34826450 DOI: 10.1016/j.chemosphere.2021.133044] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 10/12/2021] [Accepted: 11/21/2021] [Indexed: 06/13/2023]
Abstract
Nutrients in centralized discharge area of treated sewage can cause high ecological risks to aquatic systems, thus a deep-level nutrient removal is necessary. Recently, periphyton has attracted increasing interests for its excellent performance in nutrient removal. In this study, the suitability and durability of basalt fiber (BF) as a new green carrier of periphyton was evaluated, and development process of basalt fiber-periphtyon (BFP) was tracked with bacterial community succession and physiological indicators. Then, well-developed BFP was applied to deeply purify water containing the same concentration of nutrient as the treated sewage. Results showed the periphyton could adapt to BF and formed in large quantities. In addition, the tensile strength of BF after being used as a carrier was still strong. Bacterial community and physiological indicators indicated that BFP was well developed in 40-50 days. LEfSE and random forest analysis revealed that Deinococcus-Deinococci, Spartobacteria and Chlamydiia at class-level, Rhizobiales and Rhodobacterales at order-level were the biomarkers for development of BFP. Moreover, application results showed BFP efficiently removed nitrogen and phosphorus from water and promoted the transformation of ammonia to nitrate. The concentration of ammonia and phosphorus severely decreased from 4.90 ± 0.11 mg/L to 0.51 ± 0.20 mg/L, from 0.66 ± 0.016 mg/L to 0.023 ± 0.013 mg/L, respectively. The efficient nutrient removal was attributed to accumulation of nitrogen and phosphorus metabolism related organisms in BFP as well as favorable water physic-chemical conditions created by BFP. These results suggest that BF is a suitable and durable green carrier of periphyton, and BFP could efficiently reduce ecological risk to aquatic systems receiving treated sewage.
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Affiliation(s)
- Yue Zhao
- Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu, 610041, China; Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu, 610041, China
| | - Run Zhang
- Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu, 610041, China; Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu, 610041, China
| | - Liandong Jing
- Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu, 610041, China; Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu, 610041, China.
| | - Wenjing Wang
- Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, 7 Chunhui Road, Yantai, 264003, China
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11
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Tamminen M, Spaak J, Tlili A, Eggen R, Stamm C, Räsänen K. Wastewater constituents impact biofilm microbial community in receiving streams. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 807:151080. [PMID: 34678363 DOI: 10.1016/j.scitotenv.2021.151080] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 10/01/2021] [Accepted: 10/15/2021] [Indexed: 05/27/2023]
Abstract
Microbial life in natural biofilms is dominated by prokaryotes and microscopic eukaryotes living in dense association. In stream ecosystems, microbial biofilms influence primary production, elemental cycles, food web interactions as well as water quality. Understanding how biofilm communities respond to anthropogenic impacts, such as wastewater treatment plant (WWTP) effluent, is important given the key role of biofilms in stream ecosystem function. Here, we implemented 16S and 18S rRNA gene sequencing of stream biofilms upstream (US) and downstream (DS) of WWTP effluents in four Swiss streams to test how bacterial and eukaryotic communities respond to wastewater constituents. Stream biofilm composition was strongly affected by geographic location - particularly for bacteria. However, the abundance of certain microbial community members was related to micropollutants in the wastewater - among bacteria, micropollutant-associated members were found e.g. in Alphaproteobacteria, and among eukaryotes e.g. in Bacillariophyta (algal diatoms). This study corroborates several previously characterized responses (e.g. as seen in diatoms), but also reveals previously unknown community responses - such as seen in Alphaproteobacteria. This study advances our understanding of the ecological impact of the current wastewater treatment practices and provides information about potential new marker organisms to assess ecological change in stream biofilms.
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Affiliation(s)
- Manu Tamminen
- Department of Biology, University of Turku, Finland.
| | - Jenny Spaak
- Department of Environmental Microbiology, Eawag, Switzerland
| | - Ahmed Tlili
- Department of Environmental Toxicology, Eawag, Switzerland
| | - Rik Eggen
- Department of Environmental Toxicology, Eawag, Switzerland; Department of Environmental Systems Science, ETH Zürich, Switzerland
| | | | - Katja Räsänen
- Department of Aquatic Ecology, Eawag, Switzerland; Dept. of Biology and Environmental Science, University of Jyväskylä, Finland
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12
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Liu C, Yan H, Sun Y, Chen B. Contribution of enrofloxacin and Cu 2+ to the antibiotic resistance of bacterial community in a river biofilm. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 291:118156. [PMID: 34530240 DOI: 10.1016/j.envpol.2021.118156] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/31/2021] [Accepted: 09/09/2021] [Indexed: 06/13/2023]
Abstract
Pollutants discharged from wastewater are the main cause of the spread of antibiotic resistance in river biofilms. There is controversy regarding the primary contribution of environmental selectors such as antibiotics and heavy metals to the development of antibiotic resistance in bacterial communities. Here, this study compared the effect of environmental safety concentration Cu2+ and enrofloxacin (ENR) on the evolution of antibiotic resistance by examining phenotypic characteristics and genotypic profiles of bacterial communities in a river biofilm, and then distinguished the major determinants from a comprehensive perspective. The pollution induced community tolerance in ENR-treated group was significantly higher than that in Cu2+-treated group (at concentration levels of 100 and 1000 μg/L). Metagenomic sequencing results showed that ENR significantly increased the number and total abundance of antibiotic resistance genes (ARGs), but there was no significant change in the Cu2+- treated group. Compared with Cu2+, ENR was the major selective agent in driving the change of taxonomic composition because the taxonomic composition in ENR was the most different from the original biofilm. Comparing and analyzing the prokaryotic composition, the phylum of Proteobacteria was enriched in both ENR and Cu2+ treated groups. Among them, Acidovorax and Bosea showed resistance to both pollutants. Linking taxonomic composition to ARGs revealed that the main potential hosts of fluoroquinolone resistance genes were Comamonas, Sphingopyxis, Bradyrhizobium, Afipia, Rhodopseudomonas, Luteimonas and Hoeflea. The co-occurrence of ARGs and metal resistance genes (MRGs) showed that the multidrug efflux pump was the key mechanism connecting MRGs and ARGs. Network analysis also revealed that the reason of Cu2+ selected for fluoroquinolones resistant bacterial communities was the coexistence of multidrug efflux gene and MRGs. Our research emphasizes the importance of antibiotics in promoting the development of antibiotic resistant bacterial communities from the perspective of changes in community structure and resistome in river biofilms.
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Affiliation(s)
- Congcong Liu
- Department of Environmental Science, Zhejiang University, Hangzhou, 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou, 310058, China
| | - Huicong Yan
- Department of Environmental Science, Zhejiang University, Hangzhou, 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou, 310058, China
| | - Yang Sun
- Department of Environmental Science, Zhejiang University, Hangzhou, 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou, 310058, China
| | - Baoliang Chen
- Department of Environmental Science, Zhejiang University, Hangzhou, 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou, 310058, China.
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13
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Carles L, Wullschleger S, Joss A, Eggen RIL, Schirmer K, Schuwirth N, Stamm C, Tlili A. Impact of wastewater on the microbial diversity of periphyton and its tolerance to micropollutants in an engineered flow-through channel system. WATER RESEARCH 2021; 203:117486. [PMID: 34412020 DOI: 10.1016/j.watres.2021.117486] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 06/30/2021] [Accepted: 07/26/2021] [Indexed: 06/13/2023]
Abstract
Wastewater treatment plants (WWTPs) play an important role in retaining organic matter and nutrients but to a lesser extent micropollutants. Therefore, treated wastewater is recognized as a major source of multiple stressors, including complex mixtures of micropollutants. These can potentially affect microbial communities in the receiving water bodies and the ecological functions they provide. In this study, we evaluated in flow-through channels the consequences of an exposure to a mixture of stream water and different percentages of urban WWTP effluent, ranging from 0% to 80%, on the microbial diversity and function of periphyton communities. Assuming that micropollutants exert a selective pressure for tolerant microorganisms within communities, we further examined the periphyton sensitivity to a micropollutant mixture extracted from passive samplers that were immersed in the wastewater effluent. As well, micropollutants in water and in periphyton were comprehensively quantified. Our results show that micropollutants detected in periphyton differed from those found in water, both in term of concentration and composition. Especially photosystem II inhibitors accumulated in periphyton more than other pesticides. Although effects of other substances cannot be excluded, this accumulation may have contributed to the observed higher tolerance of phototrophic communities to micropollutants upon exposure to 30% and 80% of wastewater. On the contrary, no difference in tolerance was observed for heterotrophic communities. Exposure to the gradient of wastewater led to structural differences in both prokaryotic and eukaryotic communities. For instance, the relative abundance of cyanobacteria was higher with increasing percentage of wastewater effluent, whereas the opposite was observed for diatoms. Such results could indicate that differences in community structure do not necessarily lead to higher tolerance. This highlights the need to consider other wastewater constituents such as nutrients and wastewater-derived microorganisms that can modulate community structure and tolerance. By using engineered flow-through channels that mimic to some extent the required field conditions for the development of tolerance in periphyton, our study constitutes a base to investigate the mechanisms underlying the increased tolerance, such as the potential role of microorganisms originating from wastewater effluents, and different treatment options to reduce the micropollutant load in effluents.
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Affiliation(s)
- Louis Carles
- Eawag: Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland
| | - Simon Wullschleger
- Eawag: Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland
| | - Adriano Joss
- Eawag: Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland
| | - Rik I L Eggen
- Eawag: Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland; Department of Environmental Systems Science, ETH, Zürich, Switzerland
| | - Kristin Schirmer
- Eawag: Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland; Institute of Biogeochemistry and Pollutant Dynamics, ETH Zürich, Zürich, Switzerland; School of Architecture, Civil and Environmental Engineering, EPFL Lausanne, Lausanne, Switzerland
| | - Nele Schuwirth
- Eawag: Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland; Institute of Biogeochemistry and Pollutant Dynamics, ETH Zürich, Zürich, Switzerland
| | - Christian Stamm
- Eawag: Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland
| | - Ahmed Tlili
- Eawag: Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland.
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Lin H, Wang Q, Zhou J, Wang D, Men Y, Bai Y, Qu J. Recovery trajectories and community resilience of biofilms in receiving rivers after wastewater treatment plant upgrade. ENVIRONMENTAL RESEARCH 2021; 199:111349. [PMID: 34019892 DOI: 10.1016/j.envres.2021.111349] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 05/12/2021] [Accepted: 05/13/2021] [Indexed: 06/12/2023]
Abstract
Wastewater treatment plant (WWTP) upgrades can reduce both nutrient and micropollutant emissions into receiving rivers, thus modifying the composition and function of biological communities. However, how microbial communities vary and whether they can be restored to levels found in less-polluted rivers remains uncertain. Aquatic biofilms are sensitive to environmental change and respond rapidly to bottom-up pressure. Thus, we used 12 flumes configured in three experimental treatments to mimic the dynamic processes of biofilm microbial communities occurring in a wastewater-receiving river following WWTP upgrade, with rivers containing two levels of nutrients and micropollutants used as references. We compared the biofilm microbial biomass, carbon source utilization, and community composition among the three "blocks". Results showed that the metabolic patterns of the carbon sources and composition of the biofilm bacterial communities in the flumes mimicking a receiving river with WWTP upgrade recovered over time to those mimicking a less-disturbed river. The restoration of potential carboxylic acid-consuming denitrifying bacteria (i.e., Zoogloea, Comamonas, Dechloromonas, and Acinetobacter) likely played a significant role in this process. Combining quantitative analysis of the denitrification genes nirS and nosZ, we confirmed that the denitrification function of the river biofilms recovered after WWTP upgrade, consistent with our previous field investigation.
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Affiliation(s)
- Hui Lin
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Qiaojuan Wang
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jie Zhou
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Donglin Wang
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yujie Men
- Department of Chemical and Environmental Engineering, University of California, Riverside, CA, 92521, United States
| | - Yaohui Bai
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.
| | - Jiuhui Qu
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
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15
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Tardy V, Bonnineau C, Bouchez A, Miège C, Masson M, Jeannin P, Pesce S. A pilot experiment to assess the efficiency of pharmaceutical plant wastewater treatment and the decreasing effluent toxicity to periphytic biofilms. JOURNAL OF HAZARDOUS MATERIALS 2021; 411:125121. [PMID: 33858096 DOI: 10.1016/j.jhazmat.2021.125121] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 12/17/2020] [Accepted: 01/08/2021] [Indexed: 06/12/2023]
Abstract
Pharmaceutical industry effluents are complex and highly variable in time. Assessing the efficiency of a pharmaceutical industry wastewater treatment plant (WWTP) and the resulting decrease in effluent toxicity and ecological risk is thus not straightforward. We set up an original in situ pilot directly connected to a pharmaceutical WWTP to monitor the chronic toxicity of successive effluents using natural periphytic biofilms. Their structural and functional responses to effluent exposure were assessed by combining (i) a molecular approach to characterize the bacterial and diatom diversity and (ii) functional measurements of photosynthetic and enzyme activities. Effluent contamination by pharmaceuticals strongly decreased after the quaternary treatment (activated carbon). Most of the structural biological characteristics improved with cumulative WWTP treatment (bacterial diversity, microbial genetic structure, and biological diatom index), showing community recovery along the treatment process. However, functional parameters did not show clear links with treatment steps, suggesting that microbial activities were not solely driven by pharmaceuticals produced during the experimental period. Operationally, this type of pilot system offers a useful tool for biomonitoring approaches and offers new approaches for industrial managers to assess the ecological risk of production effluents in receiving water.
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Affiliation(s)
| | | | - Agnès Bouchez
- INRAE, USMB, UMR CARRTEL, 74200 Thonon-les-Bains, France
| | | | | | - Pierric Jeannin
- SANOFI, Central Laboratory of Environment & Safety, route d'Avignon, 30390 Aramon, France
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16
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Weitere M, Altenburger R, Anlanger C, Baborowski M, Bärlund I, Beckers LM, Borchardt D, Brack W, Brase L, Busch W, Chatzinotas A, Deutschmann B, Eligehausen J, Frank K, Graeber D, Griebler C, Hagemann J, Herzsprung P, Hollert H, Inostroza PA, Jäger CG, Kallies R, Kamjunke N, Karrasch B, Kaschuba S, Kaus A, Klauer B, Knöller K, Koschorreck M, Krauss M, Kunz JV, Kurz MJ, Liess M, Mages M, Müller C, Muschket M, Musolff A, Norf H, Pöhlein F, Reiber L, Risse-Buhl U, Schramm KW, Schmitt-Jansen M, Schmitz M, Strachauer U, von Tümpling W, Weber N, Wild R, Wolf C, Brauns M. Disentangling multiple chemical and non-chemical stressors in a lotic ecosystem using a longitudinal approach. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 769:144324. [PMID: 33482551 DOI: 10.1016/j.scitotenv.2020.144324] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 12/03/2020] [Accepted: 12/05/2020] [Indexed: 06/12/2023]
Abstract
Meeting ecological and water quality standards in lotic ecosystems is often failed due to multiple stressors. However, disentangling stressor effects and identifying relevant stressor-effect-relationships in complex environmental settings remain major challenges. By combining state-of-the-art methods from ecotoxicology and aquatic ecosystem analysis, we aimed here to disentangle the effects of multiple chemical and non-chemical stressors along a longitudinal land use gradient in a third-order river in Germany. We distinguished and evaluated four dominant stressor categories along this gradient: (1) Hydromorphological alterations: Flow diversity and substrate diversity correlated with the EU-Water Framework Directive based indicators for the quality element macroinvertebrates, which deteriorated at the transition from near-natural reference sites to urban sites. (2) Elevated nutrient levels and eutrophication: Low to moderate nutrient concentrations together with complete canopy cover at the reference sites correlated with low densities of benthic algae (biofilms). We found no more systematic relation of algal density with nutrient concentrations at the downstream sites, suggesting that limiting concentrations are exceeded already at moderate nutrient concentrations and reduced shading by riparian vegetation. (3) Elevated organic matter levels: Wastewater treatment plants (WWTP) and stormwater drainage systems were the primary sources of bioavailable dissolved organic carbon. Consequently, planktonic bacterial production and especially extracellular enzyme activity increased downstream of those effluents showing local peaks. (4) Micropollutants and toxicity-related stress: WWTPs were the predominant source of toxic stress, resulting in a rapid increase of the toxicity for invertebrates and algae with only one order of magnitude below the acute toxic levels. This toxicity correlates negatively with the contribution of invertebrate species being sensitive towards pesticides (SPEARpesticides index), probably contributing to the loss of biodiversity recorded in response to WWTP effluents. Our longitudinal approach highlights the potential of coordinated community efforts in supplementing established monitoring methods to tackle the complex phenomenon of multiple stress.
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Affiliation(s)
- Markus Weitere
- Helmholtz Centre for Environmental Research - UFZ, Department River Ecology, Brückstr. 3a, 39114 Magdeburg, Germany.
| | - Rolf Altenburger
- Helmholtz Centre for Environmental Research - UFZ, Department of Bioanalytical Ecotoxicology, Permoserstr. 15, 04318 Leipzig, Germany; RWTH Aachen University, Institute for Environmental Research, Worringer Weg 1, 52074 Aachen, Germany
| | - Christine Anlanger
- Helmholtz Centre for Environmental Research - UFZ, Department River Ecology, Brückstr. 3a, 39114 Magdeburg, Germany
| | - Martina Baborowski
- Helmholtz Centre for Environmental Research - UFZ, Department River Ecology, Brückstr. 3a, 39114 Magdeburg, Germany
| | - Ilona Bärlund
- Helmholtz Centre for Environmental Research - UFZ, Department of Aquatic Ecosystems Analysis, Brückstr. 3a, 39114 Magdeburg, Germany
| | - Liza-Marie Beckers
- Helmholtz Centre for Environmental Research - UFZ, Department of Effect-Directed Analysis, Permoserstr. 15, 04318 Leipzig, Germany, PAI
| | - Dietrich Borchardt
- Helmholtz Centre for Environmental Research - UFZ, Department of Aquatic Ecosystems Analysis, Brückstr. 3a, 39114 Magdeburg, Germany
| | - Werner Brack
- Helmholtz Centre for Environmental Research - UFZ, Department of Effect-Directed Analysis, Permoserstr. 15, 04318 Leipzig, Germany, PAI; RWTH Aachen University, Institute for Environmental Research, Worringer Weg 1, 52074 Aachen, Germany; Goethe University Frankfurt, Department of Evolutionary Ecology and Environmental Toxicology, Max-von-Laue-Str. 13, 60438 Frankfurt am Main, Germany
| | - Lisa Brase
- Helmholtz Centre Geesthacht - HZG, Department of Aquatic Nutrient Cycles, Max-Planck-Straße 1, 21502 Geesthacht, Germany
| | - Wibke Busch
- Helmholtz Centre for Environmental Research - UFZ, Department of Bioanalytical Ecotoxicology, Permoserstr. 15, 04318 Leipzig, Germany
| | - Antonis Chatzinotas
- Helmholtz Centre for Environmental Research - UFZ, Department of Environmental Microbiology, Permoserstr. 15, 04318 Leipzig, Germany; Leipzig University, Institute of Biology, Talstrasse 33, 04103 Leipzig, Germany
| | - Björn Deutschmann
- RWTH Aachen University, Institute for Environmental Research, Worringer Weg 1, 52074 Aachen, Germany
| | - Jens Eligehausen
- Helmholtz Centre for Environmental Research - UFZ, Department of Aquatic Ecosystems Analysis, Brückstr. 3a, 39114 Magdeburg, Germany; University of Kassel, Department of Landscape Ecology, Gottschalkstr. 26A, 34127 Kassel, Germany
| | - Karin Frank
- Helmholtz Centre for Environmental Research - UFZ, Department of Ecological Modelling, Permoserstr. 15, 04318 Leipzig, Germany
| | - Daniel Graeber
- Helmholtz Centre for Environmental Research - UFZ, Department of Aquatic Ecosystems Analysis, Brückstr. 3a, 39114 Magdeburg, Germany
| | - Christian Griebler
- Helmholtz Zentrum München - German Research Center for Environmental Health (GmbH), Institute of Groundwater Ecology, Ingolstädter Landstrasse 1, 85764 Neuherberg, Germany; University of Vienna, Department for Functional and Evolutionary Ecology, Althanstrasse 14, 1090 Wien, Austria
| | - Jeske Hagemann
- Helmholtz Centre for Environmental Research - UFZ, Department of Aquatic Ecosystems Analysis, Brückstr. 3a, 39114 Magdeburg, Germany
| | - Peter Herzsprung
- Helmholtz Centre for Environmental Research - UFZ, Department Lake Research, Brückstr. 3a, 39114 Magdeburg, Germany
| | - Henner Hollert
- RWTH Aachen University, Institute for Environmental Research, Worringer Weg 1, 52074 Aachen, Germany; Goethe University Frankfurt, Department of Evolutionary Ecology and Environmental Toxicology, Max-von-Laue-Str. 13, 60438 Frankfurt am Main, Germany
| | - Pedro A Inostroza
- Helmholtz Centre for Environmental Research - UFZ, Department of Effect-Directed Analysis, Permoserstr. 15, 04318 Leipzig, Germany, PAI
| | - Christoph G Jäger
- Helmholtz Centre for Environmental Research - UFZ, Department of Aquatic Ecosystems Analysis, Brückstr. 3a, 39114 Magdeburg, Germany; Rosenheim Technical University of Applied Sciences, Centre for Research, Development and Technology Transfer, Hochschulstraße 1, 83024 Rosenheim, Germany
| | - René Kallies
- Helmholtz Centre for Environmental Research - UFZ, Department of Environmental Microbiology, Permoserstr. 15, 04318 Leipzig, Germany
| | - Norbert Kamjunke
- Helmholtz Centre for Environmental Research - UFZ, Department River Ecology, Brückstr. 3a, 39114 Magdeburg, Germany
| | - Bernhard Karrasch
- Helmholtz Centre for Environmental Research - UFZ, Department River Ecology, Brückstr. 3a, 39114 Magdeburg, Germany
| | - Sigrid Kaschuba
- Helmholtz Zentrum München - German Research Center for Environmental Health (GmbH), Institute of Groundwater Ecology, Ingolstädter Landstrasse 1, 85764 Neuherberg, Germany
| | - Andrew Kaus
- Helmholtz Centre for Environmental Research - UFZ, Department of Aquatic Ecosystems Analysis, Brückstr. 3a, 39114 Magdeburg, Germany
| | - Bernd Klauer
- Helmholtz Centre for Environmental Research - UFZ, Department of Economics, Permoserstraße 15, 04318 Leipzig, Germany
| | - Kay Knöller
- Helmholtz Centre for Environmental Research - UFZ, Department Catchment Hydrology, Theodor-Lieser-Str. 4, 06120 Halle, Germany
| | - Matthias Koschorreck
- Helmholtz Centre for Environmental Research - UFZ, Department Lake Research, Brückstr. 3a, 39114 Magdeburg, Germany
| | - Martin Krauss
- Helmholtz Centre for Environmental Research - UFZ, Department of Effect-Directed Analysis, Permoserstr. 15, 04318 Leipzig, Germany, PAI
| | - Julia V Kunz
- Helmholtz Centre for Environmental Research - UFZ, Department of Aquatic Ecosystems Analysis, Brückstr. 3a, 39114 Magdeburg, Germany
| | - Marie J Kurz
- Helmholtz Centre for Environmental Research - UFZ, Department Hydrogeology, Permoserstraße 15, 04318 Leipzig, Germany
| | - Matthias Liess
- Helmholtz Centre for Environmental Research -UFZ, Department of System-Ecotoxicology, Permoserstr. 15, 04318 Leipzig, Germany; RWTH Aachen University, Institute for Environmental Research (Biology V), Aachen, Germany
| | - Margarete Mages
- Helmholtz Centre for Environmental Research - UFZ, Department River Ecology, Brückstr. 3a, 39114 Magdeburg, Germany
| | - Christin Müller
- Helmholtz Centre for Environmental Research - UFZ, Department Catchment Hydrology, Theodor-Lieser-Str. 4, 06120 Halle, Germany
| | - Matthias Muschket
- Helmholtz Centre for Environmental Research - UFZ, Department of Effect-Directed Analysis, Permoserstr. 15, 04318 Leipzig, Germany, PAI
| | - Andreas Musolff
- Helmholtz Centre for Environmental Research - UFZ, Department Hydrogeology, Permoserstraße 15, 04318 Leipzig, Germany
| | - Helge Norf
- Helmholtz Centre for Environmental Research - UFZ, Department River Ecology, Brückstr. 3a, 39114 Magdeburg, Germany; Helmholtz Centre for Environmental Research - UFZ, Department of Aquatic Ecosystems Analysis, Brückstr. 3a, 39114 Magdeburg, Germany
| | - Florian Pöhlein
- Helmholtz Centre for Environmental Research - UFZ, Department Lake Research, Brückstr. 3a, 39114 Magdeburg, Germany
| | - Lena Reiber
- Helmholtz Centre for Environmental Research -UFZ, Department of System-Ecotoxicology, Permoserstr. 15, 04318 Leipzig, Germany; RWTH Aachen University, Institute for Environmental Research (Biology V), Aachen, Germany
| | - Ute Risse-Buhl
- Helmholtz Centre for Environmental Research - UFZ, Department River Ecology, Brückstr. 3a, 39114 Magdeburg, Germany
| | - Karl-Werner Schramm
- Helmholtz Zentrum München-German Research Center for Environmental Health (GmbH), Molecular EXposomics, Ingolstädter Landstr. 1, 85764 Neuherberg, Germany; Technische Universität München, Department für Biowissenschaftliche Grundlagen, Weihenstephaner Steig 23, 85350 Freising, Germany
| | - Mechthild Schmitt-Jansen
- Helmholtz Centre for Environmental Research - UFZ, Department of Bioanalytical Ecotoxicology, Permoserstr. 15, 04318 Leipzig, Germany
| | - Markus Schmitz
- RWTH Aachen University, Institute for Environmental Research, Worringer Weg 1, 52074 Aachen, Germany; Goethe University Frankfurt, Department of Evolutionary Ecology and Environmental Toxicology, Max-von-Laue-Str. 13, 60438 Frankfurt am Main, Germany
| | - Ulrike Strachauer
- Helmholtz Centre for Environmental Research - UFZ, Department of Aquatic Ecosystems Analysis, Brückstr. 3a, 39114 Magdeburg, Germany
| | - Wolf von Tümpling
- Helmholtz Centre for Environmental Research - UFZ, Department River Ecology, Brückstr. 3a, 39114 Magdeburg, Germany
| | - Nina Weber
- Helmholtz Zentrum München - German Research Center for Environmental Health (GmbH), Institute of Groundwater Ecology, Ingolstädter Landstrasse 1, 85764 Neuherberg, Germany
| | - Romy Wild
- Helmholtz Centre for Environmental Research - UFZ, Department River Ecology, Brückstr. 3a, 39114 Magdeburg, Germany
| | - Christine Wolf
- Helmholtz Centre for Environmental Research - UFZ, Department of Economics, Permoserstraße 15, 04318 Leipzig, Germany
| | - Mario Brauns
- Helmholtz Centre for Environmental Research - UFZ, Department River Ecology, Brückstr. 3a, 39114 Magdeburg, Germany
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17
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You X, Xu N, Yang X, Sun W. Pollutants affect algae-bacteria interactions: A critical review. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 276:116723. [PMID: 33611207 DOI: 10.1016/j.envpol.2021.116723] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 02/05/2021] [Accepted: 02/08/2021] [Indexed: 06/12/2023]
Abstract
With increasing concerns on the ecological risks of pollutants, many efforts have been devoted to revealing the toxic effects of pollutants on algae or bacteria in their monocultures. However, how pollutants affect algae and bacteria in their cocultures is still elusive but crucial due to its more environmental relevance. The present review outlines the interactions between algae and bacteria, reveals the influential mechanisms of pollutants (including pesticides, metals, engineered nanomaterials, pharmaceutical and personal care products, and aromatic pollutants) to algae and bacteria in their coexisted systems, and puts forward prospects for further advancing toxic studies in algal-bacterial systems. Pollutants affect the physiological and ecological functions of bacteria and algae by interfering with their relationships. Cell-to-cell adhesion, substrate exchange and biodegradation of organic pollutants, enhancement of signal transduction, and horizontal transfer of tolerance genes are important defense strategies in algal-bacterial systems to cope with pollution stress. Developing suitable algal-bacterial models, identifying cross-kingdom signaling molecules, and deciphering the horizontal transfer of pollutant resistant genes between algae and bacteria under pollution stress are the way forward to fully exploit the risks of pollutants in natural aquatic environments.
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Affiliation(s)
- Xiuqi You
- College of Environmental Sciences and Engineering, Peking University, State Environmental Protection Key Laboratory of All Material Fluxes in River Ecosystems, The Key Laboratory of Water and Sediment Sciences, Ministry of Education, International Joint Laboratory for Regional Pollution Control, Ministry of Education, Beijing, 100871, China
| | - Nan Xu
- Shenzhen Key Laboratory for Heavy Metal Pollution Control and Reutilization, School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
| | - Xi Yang
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, 810016, China
| | - Weiling Sun
- College of Environmental Sciences and Engineering, Peking University, State Environmental Protection Key Laboratory of All Material Fluxes in River Ecosystems, The Key Laboratory of Water and Sediment Sciences, Ministry of Education, International Joint Laboratory for Regional Pollution Control, Ministry of Education, Beijing, 100871, China.
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18
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Desiante WL, Minas NS, Fenner K. Micropollutant biotransformation and bioaccumulation in natural stream biofilms. WATER RESEARCH 2021; 193:116846. [PMID: 33540344 DOI: 10.1016/j.watres.2021.116846] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 01/13/2021] [Accepted: 01/15/2021] [Indexed: 05/27/2023]
Abstract
Micropollutants are ubiquitously found in natural surface waters and pose a potential risk to aquatic organisms. Stream biofilms, consisting of bacteria, algae and other microorganisms potentially contribute to bioremediating aquatic environments by biotransforming xenobiotic substances. When investigating the potential of stream biofilms to remove micropollutants from the water column, it is important to distinguish between different fate processes, such as biotransformation, passive sorption and active bioaccumulation. However, due to the complex nature of the biofilm community and its extracellular matrix, this task is often difficult. In this study, we combined biotransformation experiments involving natural stream biofilms collected up- and downstream of wastewater treatment plant outfalls with the QuEChERS extraction method to distinguish between the different fate processes. The QuEChERS extraction proved to be a suitable method for a broad range of micropollutants (> 80% of the investigated compounds). We found that 31 out of 63 compounds were biotransformed by the biofilms, with the majority being substitution-type biotransformations, and that downstream biofilms have an increased biotransformation potential towards specific wastewater-relevant micropollutants. Overall, using the experimental and analytical strategy developed, stream biofilms were demonstrated to have a broad inherent micropollutant biotransformation potential, and to thus contribute to bioremediation and improving ecosystem health.
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Affiliation(s)
- Werner L Desiante
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dübendorf, Switzerland; Institute of Biogeochemistry and Pollutant Dynamics, ETH Zürich, 8092 Zürich, Switzerland
| | - Nora S Minas
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dübendorf, Switzerland; Institute of Biogeochemistry and Pollutant Dynamics, ETH Zürich, 8092 Zürich, Switzerland
| | - Kathrin Fenner
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dübendorf, Switzerland; Institute of Biogeochemistry and Pollutant Dynamics, ETH Zürich, 8092 Zürich, Switzerland; Department of Chemistry, University of Zürich, 8057 Zürich, Switzerland.
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19
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Predicting exposure concentrations of chemicals with a wide range of volatility and hydrophobicity in different multi-well plate set-ups. Sci Rep 2021; 11:4680. [PMID: 33633258 PMCID: PMC7907087 DOI: 10.1038/s41598-021-84109-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Accepted: 02/03/2021] [Indexed: 11/16/2022] Open
Abstract
Quantification of chemical toxicity in small-scale bioassays is challenging owing to small volumes used and extensive analytical resource needs. Yet, relying on nominal concentrations for effect determination maybe erroneous because loss processes can significantly reduce the actual exposure. Mechanistic models for predicting exposure concentrations based on distribution coefficients exist but require further validation with experimental data. Here we developed a complementary empirical model framework to predict chemical medium concentrations using different well-plate formats (24/48-well), plate covers (plastic lid, or additionally aluminum foil or adhesive foil), exposure volumes, and biological entities (fish, algal cells), focusing on the chemicals’ volatility and hydrophobicity as determinants. The type of plate cover and medium volume were identified as important drivers of volatile chemical loss, which could accurately be predicted by the framework. The model focusing on adhesive foil as cover was exemplary cross-validated and extrapolated to other set-ups, specifically 6-well plates with fish cells and 24-well plates with zebrafish embryos. Two case study model applications further demonstrated the utility of the empirical model framework for toxicity predictions. Thus, our approach can significantly improve the applicability of small-scale systems by providing accurate chemical concentrations in exposure media without resource- and time-intensive analytical measurements.
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20
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Liu J, Zhang H, Yan L, Kerr PG, Zhang S, Wu Y. Electron transport, light energy conversion and proteomic responses of periphyton in photosynthesis under exposure to AgNPs. JOURNAL OF HAZARDOUS MATERIALS 2021; 401:123809. [PMID: 33113741 DOI: 10.1016/j.jhazmat.2020.123809] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 08/10/2020] [Accepted: 08/21/2020] [Indexed: 05/09/2023]
Abstract
Silver nanoparticles (AgNPs) including a mix of intact nanoparticle-Ag and 'free' Ag+ pose high risks to benthic photoautotrophs, but the photosynthetic responses of benthic microbial aggregates to AgNPs still remain largely unknown. Here, periphyton and Nostoc were used to elucidate the photosynthetic responses of benthic algae community to intact nanoparticle-Ag and Ag+. During exposure, both intact nanoparticle-Ag and Ag+ imposed negative effects on photosynthesis of benthic algae, but via different pathways. Specifically, Ag+ had stronger effects on damaging the oxygen-evolving complex (OEC) and thylakoid membrane than intact nanoparticle-Ag. Ag+ also suppressed electron transfer from QA to QB, and impaired phycobilisome. Intact nanoparticle-Ag inhibited the expression of PsbD and PsbL in PSII, but prompted the ROS scavenging capacity. In response to the stress of AgNPs, the benthic algae increased light energy absorption to maintain the electron transport efficiency, and up-regulated PSI reaction center protein (PsaA) to compensate the degraded PSII. These results reveal how intact nanoparticle-Ag and Ag+ influence electron transport, energy conversion and protein expression in the photosynthesis of periphyton, and provide deep insights into the responses of benthic photoautotrophs to different components of AgNPs.
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Affiliation(s)
- Junzhuo Liu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing, 210008, China; Zigui Three Gorges Reservoir Ecosystem, Observation and Research Station of Ministry of Water Resources of the People's Republic of China, Yichang, 443605, China.
| | - Huijie Zhang
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing, 210008, China; College of Agricultural Science, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Liying Yan
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing, 210008, China; Ministry of Education Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, College of Environment, Hohai University, Nanjing, 210098, China
| | - Philip G Kerr
- School of Biomedical Sciences, Charles Sturt University, Boorooma St., Wagga Wagga, NSW, 2678, Australia
| | - Songhe Zhang
- Ministry of Education Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, College of Environment, Hohai University, Nanjing, 210098, China
| | - Yonghong Wu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing, 210008, China; Zigui Three Gorges Reservoir Ecosystem, Observation and Research Station of Ministry of Water Resources of the People's Republic of China, Yichang, 443605, China.
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21
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Tlili A, Corcoll N, Arrhenius Å, Backhaus T, Hollender J, Creusot N, Wagner B, Behra R. Tolerance Patterns in Stream Biofilms Link Complex Chemical Pollution to Ecological Impacts. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:10745-10753. [PMID: 32706249 DOI: 10.1021/acs.est.0c02975] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Preventing and remedying fresh waters from chemical pollution is a fundamental societal and scientific challenge. With other nonchemical stressors potentially co-occurring, assessing the ecological consequences of reducing chemical loads in the environment is arduous. In this case study, we comparatively assessed the community structure, functions, and tolerance of stream biofilms to micropollutant mixtures extracted from deployed passive samplers at wastewater treatment plant effluents. These biofilms were growing up- and downstream of one upgraded and two nonupgraded wastewater treatment plants before being sampled for analyses. Our results showed a substantial decrease in micropollutant concentrations by 85%, as the result of upgrading the wastewater treatment plant at one of the sampling sites with activated carbon filtration. This decrease was positively correlated with a loss of community tolerance to micropollutants and the recovery of the community structure downstream of the effluent. On the other hand, downstream biofilms at the nonupgraded sites displayed higher tolerance to the extracts than the upstream biofilms. The observed higher tolerance was positively linked to micropollutant levels both in stream water and in biofilm samples, and to shifts in the community structure. Although more investigations of upgraded sites are needed, our findings point toward the suitability of using community tolerance for the retrospective assessment of the risks posed by micropollutants, to assess community recovery, and to relate effects to causes in complex environmental conditions.
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Affiliation(s)
- Ahmed Tlili
- Swiss Federal Institute of Aquatic Science and Technology (Eawag), 8600 Dübendorf, Switzerland
| | - Natàlia Corcoll
- Department of Biological and Environmental Sciences, University of Gothenburg, Carl Skottsbergs gata 22B, 41319 Gothenburg, Sweden
| | - Åsa Arrhenius
- Department of Biological and Environmental Sciences, University of Gothenburg, Carl Skottsbergs gata 22B, 41319 Gothenburg, Sweden
| | - Thomas Backhaus
- Department of Biological and Environmental Sciences, University of Gothenburg, Carl Skottsbergs gata 22B, 41319 Gothenburg, Sweden
| | - Juliane Hollender
- Swiss Federal Institute of Aquatic Science and Technology (Eawag), 8600 Dübendorf, Switzerland
- Institute of Biogeochemistry and Pollutant Dynamics, ETH Zürich, 8092 Zürich, Switzerland
| | - Nicolas Creusot
- Swiss Federal Institute of Aquatic Science and Technology (Eawag), 8600 Dübendorf, Switzerland
| | - Bettina Wagner
- Swiss Federal Institute of Aquatic Science and Technology (Eawag), 8600 Dübendorf, Switzerland
| | - Renata Behra
- Swiss Federal Institute of Aquatic Science and Technology (Eawag), 8600 Dübendorf, Switzerland
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22
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Reducing the Phytoplankton Biomass to Promote the Growth of Submerged Macrophytes by Introducing Artificial Aquatic Plants in Shallow Eutrophic Waters. WATER 2019. [DOI: 10.3390/w11071370] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Harmful cyanobacterial blooms frequently occur in shallow eutrophic lakes and usually cause the decline of submerged vegetation. Therefore, artificial aquatic plants (AAPs) were introduced into enclosures in the eutrophic Dianchi Lake to investigate whether or not they could reduce cyanobacterial blooms and promote the growth of submerged macrophytes. On the 60th day after the AAPs were installed, the turbidity, total nitrogen (TN), total phosphorous (TP), and the cell density of phytoplankton (especially cyanobacteria) of the treated enclosures were significantly reduced as compared with the control enclosures. The adsorption and absorption of the subsequently formed periphyton biofilms attached to the AAPs effectively decreased nutrient levels in the water. Moreover, the microbial diversity and structure in the water changed with the development of periphyton biofilms, showing that the dominant planktonic algae shifted from Cyanophyta to Chlorophyta. The biodiversity of both planktonic and attached bacterial communities in the periphyton biofilm also gradually increased with time, and were higher than those of the control enclosures. The transplanted submerged macrophyte (Elodea nuttallii) in treated enclosures recovered effectively and reached 50% coverage in one month while those in the control enclosures failed to grow. The application of AAPs with incubated periphyton presents an environmentally-friendly and effective solution for reducing nutrients and controlling the biomass of phytoplankton, thereby promoting the restoration of submerged macrophytes in shallow eutrophic waters.
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23
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Rath KM, Fierer N, Murphy DV, Rousk J. Linking bacterial community composition to soil salinity along environmental gradients. THE ISME JOURNAL 2019; 13:836-846. [PMID: 30446737 PMCID: PMC6461869 DOI: 10.1038/s41396-018-0313-8] [Citation(s) in RCA: 166] [Impact Index Per Article: 33.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 09/30/2018] [Accepted: 10/19/2018] [Indexed: 11/09/2022]
Abstract
Salinization is recognized as a threat to soil fertility worldwide. A challenge in understanding the effects of salinity on soil microbial communities is the fact that it can be difficult to disentangle the effects of salinity from those of other variables that may co-vary with salinity. Here we use a trait-based approach to identify direct effects of salinity on soil bacterial communities across two salinity gradients. Through dose-response relationships between salinity and bacterial growth, we quantified distributions of the trait salt tolerance within the communities. Community salt tolerance was closely correlated with soil salinity, indicating a strong filtering effect of salinity on the bacterial communities. Accompanying the increases in salt tolerance were consistent shifts in bacterial community composition. We identified specific bacterial taxa that increased in relative abundances with community salt tolerance, which could be used as bioindicators for high community salt tolerance. A strong filtering effect was also observed for pH across the gradients, with pH tolerance of bacterial communities correlated to soil pH. We propose phenotypic trait distributions aggregated at the community level as a useful approach to study the role of environmental factors as filters of microbial community composition.
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Affiliation(s)
- Kristin M Rath
- Department of Biology, Section of Microbial Ecology, Lund University, Lund, Sweden
- Centre for Environmental and Climate Research (CEC), Lund University, Lund, Sweden
| | - Noah Fierer
- Cooperative Institute for Research in Environmental Sciences and Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO, USA
| | - Daniel V Murphy
- SoilsWest, UWA School of Agriculture and Environment, The University of Western Australia, Crawley, WA, Australia
| | - Johannes Rousk
- Department of Biology, Section of Microbial Ecology, Lund University, Lund, Sweden.
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24
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Liao K, Bai Y, Huo Y, Jian Z, Hu W, Zhao C, Qu J. Use of convertible flow cells to simulate the impacts of anthropogenic activities on river biofilm bacterial communities. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 653:148-156. [PMID: 30408663 DOI: 10.1016/j.scitotenv.2018.10.363] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 10/24/2018] [Accepted: 10/27/2018] [Indexed: 06/08/2023]
Abstract
Bacterial attachment to surfaces and the development of biofilms are crucial processes during the self-purification of polluted rivers. Biofilm bacterial communities also are a potential indicator of the human impact on an aquatic system. Here, we used indoor reactors with 7.7cm3 transparent convertible flow cells to observe the formation of biofilms in river water from different land-use areas (i.e., an undisturbed mountainous area, a wastewater-discharge urban area, and a pesticide-fertilizer applied agricultural area). We then compared the bacterial biomass, composition, and function among the formed biofilms and explored whether the biofilm bacterial communities formed in polluted river water (urban area) could shift to those formed in unpolluted water (mountainous area) after simulating water-body remediation. After 60d of indoor biofilm cultivation, the biofilms formed with the three types of influent were markedly different. Anthropogenic activities (e.g., wastewater discharge and pesticide-fertilizer use) facilitated biofilm bacterial production and the metabolic rate and altered the composition and metabolic patterns of the biofilm bacterial communities. After switching from an urban water to mountainous water influent in the same reactor, the biofilm bacterial communities that initially formed in the polluted discharge did not shift to that formed in unpolluted water. This result indicated that even after water remediation, the composition of the river biofilm bacterial community would not recover to a community like that observed under non-polluted conditions. Our study highlights possible issues related to current pollution-remediation routines and emphasizes the importance of sustainable anthropogenic activities within river basins.
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Affiliation(s)
- Kailingli Liao
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China; Foreign Economic Cooperation Office, Ministry of Ecology and Environment, Beijing 100035, China
| | - Yaohui Bai
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
| | - Yang Huo
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhiyu Jian
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Wanchao Hu
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chen Zhao
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Jiuhui Qu
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
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25
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Sgier L, Merbt SN, Tlili A, Kroll A, Zupanic A. Characterization of Aquatic Biofilms with Flow Cytometry. J Vis Exp 2018. [PMID: 29939166 DOI: 10.3791/57655] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Biofilms are dynamic consortia of microorganism that play a key role in freshwater ecosystems. By changing their community structure, biofilms respond quickly to environmental changes and can be thus used as indicators of water quality. Currently, biofilm assessment is mostly based on integrative and functional endpoints, such as photosynthetic or respiratory activity, which do not provide information on the biofilm community structure. Flow cytometry and computational visualization offer an alternative, sensitive, and easy-to-use method for assessment of the community composition, particularly of the photoautotrophic part of freshwater biofilms. It requires only basic sample preparation, after which the entire sample is run through the flow cytometer. The single-cell optical and fluorescent information is used for computational visualization and biological interpretation. Its main advantages over other methods are the speed of analysis and the high-information-content nature. Flow cytometry provides information on several cellular and biofilm traits in a single measurement: particle size, density, pigment content, abiotic content in the biofilm, and coarse taxonomic information. However, it does not provide information on biofilm composition on the species level. We see high potential in the use of the method for environmental monitoring of aquatic ecosystems and as an initial biofilm evaluation step that informs downstream detailed investigations by complementary and more detailed methods.
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Affiliation(s)
- Linn Sgier
- Department of Environmental Toxicology, Eawag - Swiss Federal Institute for Aquatic Science and Technology
| | - Stephanie N Merbt
- Department of Environmental Toxicology, Eawag - Swiss Federal Institute for Aquatic Science and Technology
| | - Ahmed Tlili
- Department of Environmental Toxicology, Eawag - Swiss Federal Institute for Aquatic Science and Technology
| | - Alexandra Kroll
- Department of Environmental Toxicology, Eawag - Swiss Federal Institute for Aquatic Science and Technology
| | - Anze Zupanic
- Department of Environmental Toxicology, Eawag - Swiss Federal Institute for Aquatic Science and Technology;
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26
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Rodrigues ACM, Machado AL, Bordalo MD, Saro L, Simão FCP, Rocha RJM, Golovko O, Žlábek V, Barata C, Soares AMVM, Pestana JLT. Invasive Species Mediate Insecticide Effects on Community and Ecosystem Functioning. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:4889-4900. [PMID: 29565569 DOI: 10.1021/acs.est.8b00193] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Anthropogenic activities increase pesticide contamination and biological invasions in freshwater ecosystems. Understanding their combined effects on community structure and on ecosystem functioning presents challenges for an improved ecological risk assessment. This study focuses on an artificial stream mesocosms experiment testing for direct and indirect effects of insecticide (chlorantraniliprole - CAP) exposure on the structure of a benthic macroinvertebrate freshwater community and on ecosystem functioning (leaf decomposition, primary production). To understand how predator identity and resource quality alter the community responses to chemical stress, the mediating effects of an invasive predator species (crayfish Procambarus clarkii) and detritus quality (tested by using leaves of the invasive Eucalyptus globulus) on insecticide toxicity were also investigated. Low concentrations of CAP reduced the abundance of shredders and grazers, decreasing leaf decomposition and increasing primary production. Replacement of autochthonous predators and leaf litter by invasive species decreased macroinvertebrate survival, reduced leaf decomposition, and enhanced primary production. Structural equation modeling (SEM) highlighted that CAP toxicity to macroinvertebrates was mediated by the presence of crayfish or eucalypt leaf litter which are now common in many Mediterranean freshwaters. In summary, our results demonstrate that the presence of these two invasive species alters the effects of insecticide exposure on benthic freshwater communities. The approach used here also allowed for a mechanistic evaluation of indirect effects of these stressors and of their interaction on ecosystem functional endpoint, emphasizing the value of incorporating biotic stressors in ecotoxicological experiments.
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Affiliation(s)
- Andreia C M Rodrigues
- Departamento de Biologia & CESAM , Universidade de Aveiro , Campus Universitário de Santiago , 3810-193 Aveiro , Portugal
- Department of Environmental Chemistry , IDAEA-CSIC , Jordi Girona, 18-26 , 08034 Barcelona , Spain
| | - Ana L Machado
- Departamento de Biologia & CESAM , Universidade de Aveiro , Campus Universitário de Santiago , 3810-193 Aveiro , Portugal
| | - Maria D Bordalo
- Departamento de Biologia & CESAM , Universidade de Aveiro , Campus Universitário de Santiago , 3810-193 Aveiro , Portugal
| | - Liliana Saro
- Departamento de Biologia & CESAM , Universidade de Aveiro , Campus Universitário de Santiago , 3810-193 Aveiro , Portugal
| | - Fátima C P Simão
- Departamento de Biologia & CESAM , Universidade de Aveiro , Campus Universitário de Santiago , 3810-193 Aveiro , Portugal
| | - Rui J M Rocha
- Departamento de Biologia & CESAM , Universidade de Aveiro , Campus Universitário de Santiago , 3810-193 Aveiro , Portugal
| | - Oksana Golovko
- Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses , University of South Bohemia in Ceske Budejovice , 389 25 Vodnany , Czech Republic
| | - Vladimír Žlábek
- Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses , University of South Bohemia in Ceske Budejovice , 389 25 Vodnany , Czech Republic
| | - Carlos Barata
- Department of Environmental Chemistry , IDAEA-CSIC , Jordi Girona, 18-26 , 08034 Barcelona , Spain
| | - Amadeu M V M Soares
- Departamento de Biologia & CESAM , Universidade de Aveiro , Campus Universitário de Santiago , 3810-193 Aveiro , Portugal
| | - João L T Pestana
- Departamento de Biologia & CESAM , Universidade de Aveiro , Campus Universitário de Santiago , 3810-193 Aveiro , Portugal
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27
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Zhu N, Zhang J, Tang J, Zhu Y, Wu Y. Arsenic removal by periphytic biofilm and its application combined with biochar. BIORESOURCE TECHNOLOGY 2018; 248:49-55. [PMID: 28720276 DOI: 10.1016/j.biortech.2017.07.026] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 07/04/2017] [Accepted: 07/06/2017] [Indexed: 06/07/2023]
Abstract
A biochar and periphyton-based system (BPS) comprising of a biochar column and a periphyton bioreactor was designed to avoid the toxicity issue associated with removing As(III) from wastewater. Results showed that the periphyton can grow when As(III) is less than 5.0mgL-1. The BPS obtained a high As(III) removal rate (∼90.2-95.4%) at flow rate=1.0mLmin-1 and initial concentration of As(III)=2.0mgL-1. About 60% of the As(III) was pre-treated (adsorbed) in the biochar column and the removal of the remaining As(III) was attributed to the periphyton bioreactor. The As(III) removal process by periphytic biofilm in the initial stage fits a pseudo-second-kinetic model. The calcite in the periphytic biofilm surfaces and the OH and CO groups were responsible for the As(III) removal. This study indicates the feasibility of the BPS for As(III) removal in practice.
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Affiliation(s)
- Ningyuan Zhu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Sciences, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing 210008, China; Graduate School of the Chinese Academy of Sciences, Beijing 100039, China
| | - Jianhong Zhang
- Resources & Environment Business Dept., International Engineering Consulting Corporation, Beijing 100048, China
| | - Jun Tang
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Sciences, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing 210008, China; Graduate School of the Chinese Academy of Sciences, Beijing 100039, China
| | - Yan Zhu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Sciences, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing 210008, China; Graduate School of the Chinese Academy of Sciences, Beijing 100039, China
| | - Yonghong Wu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Sciences, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing 210008, China.
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28
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Brack W, Escher BI, Müller E, Schmitt-Jansen M, Schulze T, Slobodnik J, Hollert H. Towards a holistic and solution-oriented monitoring of chemical status of European water bodies: how to support the EU strategy for a non-toxic environment? ENVIRONMENTAL SCIENCES EUROPE 2018; 30:33. [PMID: 30221105 PMCID: PMC6132835 DOI: 10.1186/s12302-018-0161-1] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Accepted: 08/25/2018] [Indexed: 05/02/2023]
Abstract
The definition of priority substances (PS) according to the Water Framework Directive (WFD) helped to remove many of these chemicals from the market and to reduce their concentrations in the European water bodies. However, it could not prevent that many of these chemicals have been replaced by others with similar risks. Today, monitoring of the PS-based chemical status according to WFD covers only a tiny fraction of toxic risks, extensively ignores mixture effects and lacks incentives and guidance for abatement. Thus, we suggest complement this purely status-related approach with more holistic and solution-oriented monitoring, which at the same time helps to provide links to the ecological status. Major elements include (1) advanced chemical screening techniques supporting mixture risk assessment and unraveling of source-related patterns in complex mixtures, (2) effect-based monitoring for the detection of groups of chemicals with similar effects and the establishment of toxicity fingerprints, (3) effect-directed analysis of drivers of toxicity and (4) to translate chemical and toxicological fingerprints into chemical footprints for prioritization of management measures. The requirement of more holistic and solution-oriented monitoring of chemical contamination is supported by the significant advancement of appropriate monitoring tools within the last years. Non-target screening technology, effect-based monitoring and basic understanding of mixture assessment are available conceptually and in research but also increasingly find their way into practical monitoring. Substantial progress in the development, evaluation and demonstration of these tools, for example, in the SOLUTIONS project enhanced their acceptability. Further advancement, integration and demonstration, extensive data exchange and closure of remaining knowledge gaps are suggested as high priority research needs for the next future to bridge the gap between insufficient ecological status and cost-efficient abatement measures.
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Affiliation(s)
- Werner Brack
- Department of Effect-Directed Analysis, Helmholtz Centre for Environmental Research UFZ, Permoserstr. 15, 04318 Leipzig, Germany
- Department of Ecosystem Analysis, Institute for Environmental Research, ABBt-Aachen Biology and Biotechnology, RWTH Aachen University, Worringerweg 1, 52074 Aachen, Germany
| | - Beate I. Escher
- Department of Cell Toxicology, Helmholtz Centre for Environmental Research UFZ, Permoserstr. 15, 04318 Leipzig, Germany
- Environmental Toxicology, Center for Applied Geosciences, Eberhard Karls University Tübingen, 72074 Tübingen, Germany
| | - Erik Müller
- Department of Effect-Directed Analysis, Helmholtz Centre for Environmental Research UFZ, Permoserstr. 15, 04318 Leipzig, Germany
| | - Mechthild Schmitt-Jansen
- Department of Bioanalytical Ecotoxicology, Helmholtz Centre for Environmental Research UFZ, Permoserstr. 15, 04318 Leipzig, Germany
| | - Tobias Schulze
- Department of Effect-Directed Analysis, Helmholtz Centre for Environmental Research UFZ, Permoserstr. 15, 04318 Leipzig, Germany
| | | | - Henner Hollert
- Department of Ecosystem Analysis, Institute for Environmental Research, ABBt-Aachen Biology and Biotechnology, RWTH Aachen University, Worringerweg 1, 52074 Aachen, Germany
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Lambert AS, Dabrin A, Foulquier A, Morin S, Rosy C, Coquery M, Pesce S. Influence of temperature in pollution-induced community tolerance approaches used to assess effects of copper on freshwater phototrophic periphyton. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 607-608:1018-1025. [PMID: 28724220 DOI: 10.1016/j.scitotenv.2017.07.035] [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: 03/08/2017] [Revised: 07/03/2017] [Accepted: 07/04/2017] [Indexed: 06/07/2023]
Abstract
By measuring levels of tolerance to toxicants in microbial communities using functional toxicity tests under controlled conditions, pollution-induced community tolerance (PICT) approaches offer an effect-based tool to assess the ecological risk of chemicals in aquatic systems. However, induced tolerance of exposed microbial communities cannot always be attributed solely to the presence of toxicants as various environmental factors, such as temperature, can also be involved. Several PICT studies have been conducted to assess the effects of copper (Cu) on phototrophic periphyton, but little is known about the influence of temperature on the response of these microbial communities to acute and chronic exposure to Cu. Here, we report on a microcosm approach to assess the effects of two contrasting temperatures (18°C and 28°C) on (i) the baseline level of Cu tolerance in non-Cu-exposed phototrophic periphyton (i.e. effect of temperature on tolerance baseline), (ii) Cu tolerance acquisition by phototrophic periphyton in response to a 3-week chronic exposure to Cu at a nominal concentration of 60μgL-1 (i.e. effect of temperature on PICT selection) and (iii) tolerance measured during short-term toxicity tests (i.e. effect of temperature on PICT detection). The aim was to evaluate how temperature conditions during the different phases of the PICT approaches may modify the causal relationship between chronic Cu exposure and measured Cu tolerance levels. Our results evidence the influence of temperature both on the basal capacity of phototrophic periphyton to tolerate subsequent exposure to Cu (i.e. influence on tolerance baseline) and on its capacity to acquire tolerance following chronic exposure to Cu (i.e. influence on PICT selection). Hence temperature must be considered when using PICT to establish causal links between chronic Cu exposure and effects on phototrophic periphyton.
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Affiliation(s)
- Anne Sophie Lambert
- Irstea, UR MALY, centre de Lyon-Villeurbanne, 5 rue de la Doua, BP 32108, 69616 Villeurbanne Cedex, France.
| | - Aymeric Dabrin
- Irstea, UR MALY, centre de Lyon-Villeurbanne, 5 rue de la Doua, BP 32108, 69616 Villeurbanne Cedex, France.
| | - Arnaud Foulquier
- Laboratoire d'Écologie Alpine - UMR CNRS 5553, Université Grenoble Alpes, BP 53, 38041 Grenoble Cedex 9, France.
| | - Soizic Morin
- Irstea, UR EABX, 50 avenue de Verdun, 33612 Cestas, France.
| | - Christophe Rosy
- Irstea, UR MALY, centre de Lyon-Villeurbanne, 5 rue de la Doua, BP 32108, 69616 Villeurbanne Cedex, France.
| | - Marina Coquery
- Irstea, UR MALY, centre de Lyon-Villeurbanne, 5 rue de la Doua, BP 32108, 69616 Villeurbanne Cedex, France.
| | - Stéphane Pesce
- Irstea, UR MALY, centre de Lyon-Villeurbanne, 5 rue de la Doua, BP 32108, 69616 Villeurbanne Cedex, France.
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Corcoll N, Österlund T, Sinclair L, Eiler A, Kristiansson E, Backhaus T, Eriksson KM. Comparison of four DNA extraction methods for comprehensive assessment of 16S rRNA bacterial diversity in marine biofilms using high-throughput sequencing. FEMS Microbiol Lett 2017; 364:3898816. [DOI: 10.1093/femsle/fnx139] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Accepted: 06/27/2017] [Indexed: 01/07/2023] Open
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