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Lengyel E, Stenger-Kovács C, Boros G, Al-Imari TJK, Novák Z, Bernát G. Anticipated impacts of climate change on the structure and function of phytobenthos in freshwater lakes. ENVIRONMENTAL RESEARCH 2023; 238:117283. [PMID: 37783333 DOI: 10.1016/j.envres.2023.117283] [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: 07/17/2023] [Revised: 09/14/2023] [Accepted: 09/29/2023] [Indexed: 10/04/2023]
Abstract
Climate change threatens surface waters worldwide, especially shallow lakes where one of the expected consequences is a sharp increase in their water temperatures. Phytobenthos is an essential, but still less studied component of aquatic ecosystems, and it would be important to learn more about how global warming will affect this community in shallow lakes. In this research, the effects of different climate change scenarios (SSP2-4.5 and SSP5-8.5, as intermediate and high emission scenarios) on the structure and function of the entire phytobenthos community using species- and trait-based approaches were experimentally investigated in an outdoor mesocosm system. Our results show that the forecasted 3 °C increase in temperature will already exert significant impacts on the benthic algal community by (1) altering its species and (2) trait composition (smaller cell size, lower abundance of colonial and higher of filamentous forms); (3) decreasing Shannon diversity; and (4) enhancing the variability of the community. Higher increase in the temperature (+5 °C) will imply more drastic alterations in freshwater phytobenthos by (1) inducing very high variability in species composition and compositional changes even in phylum level (towards higher abundance of Cyanobacteria and Chlorophyta at the expense of Bacillariophyta); (2) continuing shift in trait composition (benefits for smaller cell volume, filamentous life-forms, non-motile and weakly attached taxa); (3) further reducing the functional diversity; (4) increasing biofilm thickness (1.4 μm/°C) and (5) decreasing maximum quantum yield of photosystem II. In conclusion, already the intermediate emission scenario will predictably induce high risk in biodiversity issues, the high emission scenario will imply drastic impacts on the benthic algae endangering even the function of the ecosystem.
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Affiliation(s)
- Edina Lengyel
- Limnology Research Group, Center for Natural Science, University of Pannonia, Egyetem utca 10, H-8200, Veszprém, Hungary; HUN-REN-PE Limnoecology Research Group, Egyetem utca 10, H-8200, Veszprém, Hungary.
| | - Csilla Stenger-Kovács
- Limnology Research Group, Center for Natural Science, University of Pannonia, Egyetem utca 10, H-8200, Veszprém, Hungary; HUN-REN-PE Limnoecology Research Group, Egyetem utca 10, H-8200, Veszprém, Hungary.
| | - Gergely Boros
- HUN-REN Balaton Limnological Research Institute, Klebelsberg Kuno utca 3, H-8237, Tihany, Hungary.
| | - Tiba Jassam Kaison Al-Imari
- Limnology Research Group, Center for Natural Science, University of Pannonia, Egyetem utca 10, H-8200, Veszprém, Hungary.
| | - Zoltán Novák
- HUN-REN Balaton Limnological Research Institute, Klebelsberg Kuno utca 3, H-8237, Tihany, Hungary.
| | - Gábor Bernát
- HUN-REN Balaton Limnological Research Institute, Klebelsberg Kuno utca 3, H-8237, Tihany, Hungary.
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Leclerc M, Wauthy M, Planas D, Amyot M. How do metals interact with periphytic biofilms? THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 876:162838. [PMID: 36924968 DOI: 10.1016/j.scitotenv.2023.162838] [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: 12/17/2022] [Revised: 03/08/2023] [Accepted: 03/09/2023] [Indexed: 06/18/2023]
Abstract
Extracellular matrix of periphyton has complex structural and chemical composition regulating metal transfer within biofilms with consequences for metal transfer to aquatic food webs. We investigated which metal species were retained in the loosely (LB) and the tightly bound (TB) fractions of the periphyton matrix from three pristine lakes at different growth stages. We measured the fluorescent dissolved organic matter (FDOM) composition with parallel factor analysis (PARAFAC) and the co-occurrence of essential and non-essential metals with FDOM in the two matrix fractions. The LB and TB fractions of periphyton had distinct fluorescence composition from the water column. The PARAFAC model identified five components, including two (C2 and C4) appearing to be of periphytic origin. The humic-like C2 was almost exclusive to periphyton and the tryptophan-like C4, associated to biofilm phototrophy, represented up to 47.0 ± 7.3 % of total fluorescence in the LB fraction. Most metals had significant positive relationships with four FDOM components in the LB fraction while C2 was the only component in the TB fraction to show such significant relationships. Components in the LB fraction seemed to act as scavengers for metals, preventing them from reaching the cellular fraction, while C2 from the TB fraction was likely promoting the bioavailability of essential metals for microorganisms inside periphyton. This study highlights the contrasting roles of the extracellular matrix on metal mobility beyond the usually proposed protection mechanisms. We suggest an experimental model for the study of metal regulation processes of the periphytic extracellular polymeric substances with a focus on the components produced by microorganisms within periphyton and their distribution in the different matrix fractions.
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Affiliation(s)
- Maxime Leclerc
- GRIL, Département de Sciences Biologiques, Université de Montréal, 1375 Thérèse-Lavoie-Roux Ave., Montréal, QC H2V 0B3, Canada; GRIL, GEOTOP, Département de Sciences Biologiques, Université du Québec à Montréal, 141 Président-Kennedy Ave., Montréal, QC H2X 1Y4, Canada
| | - Maxime Wauthy
- GRIL, Département de Sciences Biologiques, Université de Montréal, 1375 Thérèse-Lavoie-Roux Ave., Montréal, QC H2V 0B3, Canada
| | - Dolors Planas
- GRIL, GEOTOP, Département de Sciences Biologiques, Université du Québec à Montréal, 141 Président-Kennedy Ave., Montréal, QC H2X 1Y4, Canada
| | - Marc Amyot
- GRIL, Département de Sciences Biologiques, Université de Montréal, 1375 Thérèse-Lavoie-Roux Ave., Montréal, QC H2V 0B3, Canada.
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Peng K, Jiao Y, Gao J, Xiong W, Zhao Y, Yang S, Liao M. Viruses may facilitate the cyanobacterial blooming during summer bloom succession in Xiangxi Bay of Three Gorges Reservoir, China. Front Microbiol 2023; 14:1112590. [PMID: 36970686 PMCID: PMC10030618 DOI: 10.3389/fmicb.2023.1112590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 02/13/2023] [Indexed: 03/11/2023] Open
Abstract
The occurrence of cyanobacterial blooms in summer are frequently accompanied by the succession of phytoplankton communities in freshwater. However, little is known regarding the roles of viruses in the succession, such as in huge reservoirs. Here, we investigated the viral infection characteristics of phytoplankton and bacterioplankton during the summer bloom succession in Xiangxi Bay of Three Gorges Reservoir, China. The results indicated that three distinct bloom stages and two successions were observed. From cyanobacteria and diatom codominance to cyanobacteria dominance, the first succession involved different phyla and led to a Microcystis bloom. From Microcystis dominance to Microcystis and Anabaena codominance, the second succession was different Cyanophyta genera and resulted in the persistence of cyanobacterial bloom. The structural equation model (SEM) showed that the virus had positive influence on the phytoplankton community. Through the Spearman’s correlation and redundancy analysis (RDA), we speculated that both the increase of viral lysis in the eukaryotic community and the increase of lysogeny in cyanobacteria may contributed to the first succession and Microcystis blooms. In addition, the nutrients supplied by the lysis of bacterioplankton might benefit the second succession of different cyanobacterial genera and sustain the dominance of cyanobacteria. Based on hierarchical partitioning method, the viral variables still have a marked effect on the dynamics of phytoplankton community, although the environmental attributes were the major factors. Our findings suggested that viruses played multiple potential roles in summer bloom succession and may help the blooms success of cyanobacteria in Xiangxi Bay. Under the background of increasingly serious cyanobacterial blooms worldwide, our study may have great ecological and environmental significance for understanding the population succession in phytoplankton and controlling the cyanobacterial blooms.
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Affiliation(s)
- Kaida Peng
- School of Life Sciences, Central China Normal University, Wuhan, Hubei, China
- Hubei Key Laboratory of Ecological Restoration for River-Lakes and Algal Utilization, School of Civil and Environmental Engineering, Hubei University of Technology, Wuhan, Hubei, China
| | - Yiying Jiao
- Hubei Key Laboratory of Ecological Restoration for River-Lakes and Algal Utilization, School of Civil and Environmental Engineering, Hubei University of Technology, Wuhan, Hubei, China
| | - Jian Gao
- Hubei Key Laboratory of Ecological Restoration for River-Lakes and Algal Utilization, School of Civil and Environmental Engineering, Hubei University of Technology, Wuhan, Hubei, China
| | - Wen Xiong
- Hubei Key Laboratory of Ecological Restoration for River-Lakes and Algal Utilization, School of Civil and Environmental Engineering, Hubei University of Technology, Wuhan, Hubei, China
| | - Yijun Zhao
- Hubei Key Laboratory of Ecological Restoration for River-Lakes and Algal Utilization, School of Civil and Environmental Engineering, Hubei University of Technology, Wuhan, Hubei, China
| | - Shao Yang
- School of Life Sciences, Central China Normal University, Wuhan, Hubei, China
| | - Mingjun Liao
- Hubei Key Laboratory of Ecological Restoration for River-Lakes and Algal Utilization, School of Civil and Environmental Engineering, Hubei University of Technology, Wuhan, Hubei, China
- *Correspondence: Mingjun Liao,
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4
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Zhao Y, Zhang Y, Guo J, Wang J, Li Y. Shifts in periphyton research themes over the past three decades. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:5281-5295. [PMID: 36402877 DOI: 10.1007/s11356-022-24251-7] [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: 03/12/2022] [Accepted: 11/13/2022] [Indexed: 06/16/2023]
Abstract
It has been well documented that periphyton communities play a key role in primary productivity, nutrient cycling, and food web interactions. However, a worldwide overview of research on the key themes, current situation, and major trends within the field is lacking. In this study, we applied the machine learning technique (latent Dirichlet allocation, LDA) to analyze the abstracts of 6690 publications related to periphyton from 1991 to 2020 based on the Web of Science database. The relative frequency of classical and basic research on periphyton related to colonization, biomass, growth rate, and habitats has been clearly decreasing. The increasing trends of research on periphyton are embodied in the periphyton function in freshwater ecosystems (e.g., application as ecological indicators, function in the removal of nutrients, and application in paleolimnology), the research at macroscales (e.g., spatial-temporal variation, and functional and taxonomic diversity), and the anthropogenic themes (e.g., climate warming, response to multiple stressors, and land use type). The keyword and title analysis showed that the periphyton studies are concentrated mainly on diatom aspects, especially with respect to streams relative to lakes. The thematic space based on non-metric multidimensional scaling (NMDS) showed that the classical themes such as growth rate, colonization, and environmental factors (e.g., multiple stressors and climate warming) were most linked to other research themes. We proposed that future trends in the periphyton should focus on the function of periphyton in lakes and their response to multiple environmental pressures with the increasingly extensive eutrophication in lakes and the increasingly significant change in the climate.
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Affiliation(s)
- Yihan Zhao
- Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Sciences, Yunnan University, Kunming, 650500, China
| | - Yun Zhang
- College of Life Sciences, Hubei Normal University, Huangshi, 435002, China
| | - Jishu Guo
- Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Sciences, Yunnan University, Kunming, 650500, China
| | - Jun Wang
- Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affair, College of Fisheries, Huazhong Agricultural University, Wuhan, 430070, China
| | - Yanling Li
- Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Sciences, Yunnan University, Kunming, 650500, China.
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Zhang C, Pei H, Lu C, Liu C, Wang W, Zhang X, Liu P, Lei G. Indirect herbivore biomanipulation may halt regime shift from clear to turbid after macrophyte restoration. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 313:120242. [PMID: 36162564 DOI: 10.1016/j.envpol.2022.120242] [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: 07/21/2022] [Revised: 09/05/2022] [Accepted: 09/18/2022] [Indexed: 06/16/2023]
Abstract
Eutrophication transforms clear water into turbid water in shallow lakes. Current restoration techniques focus on re-establishing the clear-water state rather than on its maintenance. We investigated the response of submerged macrophytes to temporary grass carp (Ctenopharyngodon idella) and scraping snail (Bellamya aeruginosa) introductions. We also explored the impacts of herbivores on underwater light conditions to identify their long- and short-term potential to halt regime shift from clear to turbid after clear-water state reestablishment. Herbivores reduced both the biomass of submerged macrophytes and accumulated nutrients in the tissue of submerged macrophytes. This potentially avoided the pulse of endogenous nutrient release which would have exceeded the threshold required for the regime shift from clear to turbid. However, herbivores had a non-significant impact on submerged macrophyte-reduced light attenuation coefficient, which has a positive linear relationship with water chlorophyll a. Further, grass carp and snails enhanced the inhibition ratio of submerged macrophytes to phytoplankton by 3.96 and 2.13 times, respectively. Our study provides novel findings on the potential of herbivore introduction as an indirect biomanipulation tool for halting the regime shift of shallow lakes from clear to turbid after the restoration of submerged macrophytes.
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Affiliation(s)
- Chengxiang Zhang
- School of Environment, Beijing Normal University, Beijing, 100875, China; School of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100083, China
| | - Hongcui Pei
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Cai Lu
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100083, China
| | - Cunqi Liu
- College of Life Sciences, Hebei University, Baoding 071002, China.
| | - Wei Wang
- Institute of Environmental Information, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Xiaobo Zhang
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100083, China
| | - Peizhong Liu
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100083, China
| | - Guangchun Lei
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100083, China.
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Dashkova V, Malashenkov DV, Baishulakova A, Davidson TA, Vorobjev IA, Jeppesen E, Barteneva NS. Changes in Phytoplankton Community Composition and Phytoplankton Cell Size in Response to Nitrogen Availability Depend on Temperature. Microorganisms 2022; 10:microorganisms10071322. [PMID: 35889045 PMCID: PMC9324377 DOI: 10.3390/microorganisms10071322] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 06/02/2022] [Accepted: 06/15/2022] [Indexed: 02/01/2023] Open
Abstract
The climate-driven changes in temperature, in combination with high inputs of nutrients through anthropogenic activities, significantly affect phytoplankton communities in shallow lakes. This study aimed to assess the effect of nutrients on the community composition, size distribution, and diversity of phytoplankton at three contrasting temperature regimes in phosphorus (P)–enriched mesocosms and with different nitrogen (N) availability imitating eutrophic environments. We applied imaging flow cytometry (IFC) to evaluate complex phytoplankton communities changes, particularly size of planktonic cells, biomass, and phytoplankton composition. We found that N enrichment led to the shift in the dominance from the bloom-forming cyanobacteria to the mixed-type blooming by cyanobacteria and green algae. Moreover, the N enrichment stimulated phytoplankton size increase in the high-temperature regime and led to phytoplankton size decrease in lower temperatures. A combination of high temperature and N enrichment resulted in the lowest phytoplankton diversity. Together these findings demonstrate that the net effect of N and P pollution on phytoplankton communities depends on the temperature conditions. These implications are important for forecasting future climate change impacts on the world’s shallow lake ecosystems.
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Affiliation(s)
- Veronika Dashkova
- School of Engineering and Digital Sciences, Nazarbayev University, Nur-Sultan 00010, Kazakhstan
- School of Sciences and Humanities, Nazarbayev University, Nur-Sultan 00010, Kazakhstan; (D.V.M.); (A.B.); (I.A.V.)
- Correspondence: (V.D.); (N.S.B.)
| | - Dmitry V. Malashenkov
- School of Sciences and Humanities, Nazarbayev University, Nur-Sultan 00010, Kazakhstan; (D.V.M.); (A.B.); (I.A.V.)
- National Laboratory Astana, Nur-Sultan 00010, Kazakhstan
| | - Assel Baishulakova
- School of Sciences and Humanities, Nazarbayev University, Nur-Sultan 00010, Kazakhstan; (D.V.M.); (A.B.); (I.A.V.)
| | - Thomas A. Davidson
- Department of Ecoscience, Aarhus University Center for Water Technology (WATEC), 8000 Aarhus, Denmark; (T.A.D.); (E.J.)
| | - Ivan A. Vorobjev
- School of Sciences and Humanities, Nazarbayev University, Nur-Sultan 00010, Kazakhstan; (D.V.M.); (A.B.); (I.A.V.)
| | - Erik Jeppesen
- Department of Ecoscience, Aarhus University Center for Water Technology (WATEC), 8000 Aarhus, Denmark; (T.A.D.); (E.J.)
- Sino-Danish Centre for Education and Research, Beijing 100049, China
- Limnology Laboratory, Department of Biological Sciences and Centre for Ecosystem Research and Implementation, Middle East Technical University, Ankara 06800, Turkey
- Institute of Marine Sciences, Middle East Technical University, Erdemli-Mersin 33731, Turkey
| | - Natasha S. Barteneva
- School of Sciences and Humanities, Nazarbayev University, Nur-Sultan 00010, Kazakhstan; (D.V.M.); (A.B.); (I.A.V.)
- The Environment & Resource Efficiency Cluster, Nazarbayev University, Nur-Sultan 00010, Kazakhstan
- Correspondence: (V.D.); (N.S.B.)
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Barouillet C, Vasselon V, Keck F, Millet L, Etienne D, Galop D, Rius D, Domaizon I. Paleoreconstructions of ciliate communities reveal long-term ecological changes in temperate lakes. Sci Rep 2022; 12:7899. [PMID: 35551223 PMCID: PMC9098483 DOI: 10.1038/s41598-022-12041-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 05/05/2022] [Indexed: 11/09/2022] Open
Abstract
Ciliates are unicellular heterotrophic organisms that play a key role in aquatic planktonic and benthic food webs. Advances in sedimentary DNA (sed-DNA) analysis offer the possibility to integrate these bioindicators in paleoenvironmental reconstructions. In this study, we used the top–bottom paleolimnological approach and metabarcoding techniques applied to sed-DNA to compare the recent and past (i.e. prior to major anthropogenic impacts) ciliate communities of 48 lakes located along an elevation gradient. Our results show an overall decline in the β-diversity in recent time, especially in lowland lakes, which are more strongly exposed to local human pressures. Analyses of the functional groups indicate important restructuration of the food web, including the recent increase in mixotrophs. Moreover, changes in the benthic ciliates were consistent with the widespread increase in deep water anoxia. Our results provided evidence that sed-DNA can uncover information about past ciliate communities on a wide variety of lakes. Overall, our study demonstrates the potential of using ciliates as new paleoindicators, integrating information from the pelagic to the benthic zones, and providing valuable insights into ecosystem functioning through a trait-based functional community approach. As paleoindicator, they thus offer a more holistic view on the long-term changes of aquatic ecosystems.
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Affiliation(s)
- Cécilia Barouillet
- INRAE, Université Savoie Mont Blanc, CARRTEL, 74200, Thonon-les-Bains, France. .,Pole R&D ECLA, CARRTEL, 74200, Thonon-les-Bains, France.
| | - Valentin Vasselon
- INRAE, Université Savoie Mont Blanc, CARRTEL, 74200, Thonon-les-Bains, France.,Pole R&D ECLA, CARRTEL, 74200, Thonon-les-Bains, France.,OFB, Site INRAE UMR CARRTEL, 74200, Thonon-les-Bains, France
| | - François Keck
- INRAE, Université Savoie Mont Blanc, CARRTEL, 74200, Thonon-les-Bains, France.,Pole R&D ECLA, CARRTEL, 74200, Thonon-les-Bains, France
| | | | - David Etienne
- Pole R&D ECLA, CARRTEL, 74200, Thonon-les-Bains, France.,Université Savoie Mont Blanc, INRAE, CARRTEL, 73370, Le Bourget du Lac, France
| | - Didier Galop
- GEODE UMR 5602 CNRS, Université de Toulouse, 31058, Toulouse, France.,Labex DRIIHM, OHM Pyrénées, CNRS/INEE, Toulouse, France
| | - Damien Rius
- CNRS, Chrono Environnement, 25000, Besançon, France
| | - Isabelle Domaizon
- INRAE, Université Savoie Mont Blanc, CARRTEL, 74200, Thonon-les-Bains, France. .,Pole R&D ECLA, CARRTEL, 74200, Thonon-les-Bains, France.
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8
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Kalčíková G, Bundschuh M. Aquatic Biofilms-Sink or Source of Microplastics? A Critical Reflection on Current Knowledge. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2022; 41:838-843. [PMID: 34407241 DOI: 10.1002/etc.5195] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 05/14/2021] [Accepted: 08/12/2021] [Indexed: 06/13/2023]
Abstract
The scientific understanding regarding sources, occurrence, and effects of microplastics in the aquatic environment has advanced rapidly, leaving some meaningful knowledge gaps virtually untouched. One of them is the interactions of microplastics and biofilms, microbial communities ubiquitous in aquatic ecosystems and fundamental for a range of ecosystem-level processes. It is evident that biofilms can quickly develop on the microplastic surface and consequently change particle properties and, as such, its fate and ecotoxicity. Moreover, microplastics interact with ubiquitous biofilms that are developed on any surfaces in aquatic ecosystems. Although the knowledge about these interactions is at best limited, it is expected that microplastics attach to the water-biofilm interface or penetrate the biofilm matrix. Microplastics can accumulate and ab- or adsorb to those biofilms where they are subjected to transformation processes such as fragmentation. Thus, biofilms may function as a sink. Changes in environmental conditions may, however, stress biofilms initiating their dieback and microplastic release, which could turn biofilms into a source of microplastics. We argue that the accumulation and release dynamics are a largely overlooked but potentially important piece to the puzzle that is a comprehensive understanding of microplastic fate in the environment and thus under the influence of multiple interacting factors. Environ Toxicol Chem 2022;41:838-843. © 2021 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.
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Affiliation(s)
- Gabriela Kalčíková
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Ljubljana, Slovenia
| | - Mirco Bundschuh
- iES landau, Institute for Environmental Sciences, University of Koblenz-Landau, Landau, Germany
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Uppsala, Sweden
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9
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Lv T, Fan S, Wang H, Li D, Wang Q, Lei X, Liu C, Yu D. Invasion of water hyacinth and water lettuce inhibits the abundance of epiphytic algae. DIVERS DISTRIB 2022. [DOI: 10.1111/ddi.13527] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Affiliation(s)
- Tian Lv
- The National Field Station of Freshwater Ecosystem of Liangzi Lake College of Life Science Wuhan University Wuhan China
| | - Shufeng Fan
- The National Field Station of Freshwater Ecosystem of Liangzi Lake College of Life Science Wuhan University Wuhan China
| | - Huiyuan Wang
- The National Field Station of Freshwater Ecosystem of Liangzi Lake College of Life Science Wuhan University Wuhan China
| | - Dexiang Li
- The National Field Station of Freshwater Ecosystem of Liangzi Lake College of Life Science Wuhan University Wuhan China
| | - Qiuyue Wang
- The National Field Station of Freshwater Ecosystem of Liangzi Lake College of Life Science Wuhan University Wuhan China
| | - Xinyi Lei
- The National Field Station of Freshwater Ecosystem of Liangzi Lake College of Life Science Wuhan University Wuhan China
| | - Chunhua Liu
- The National Field Station of Freshwater Ecosystem of Liangzi Lake College of Life Science Wuhan University Wuhan China
| | - Dan Yu
- The National Field Station of Freshwater Ecosystem of Liangzi Lake College of Life Science Wuhan University Wuhan China
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10
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Polazzo F, Roth SK, Hermann M, Mangold‐Döring A, Rico A, Sobek A, Van den Brink PJ, Jackson M. Combined effects of heatwaves and micropollutants on freshwater ecosystems: Towards an integrated assessment of extreme events in multiple stressors research. GLOBAL CHANGE BIOLOGY 2022; 28:1248-1267. [PMID: 34735747 PMCID: PMC9298819 DOI: 10.1111/gcb.15971] [Citation(s) in RCA: 40] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 10/14/2021] [Accepted: 10/29/2021] [Indexed: 05/11/2023]
Abstract
Freshwater ecosystems are strongly influenced by weather extremes such as heatwaves (HWs), which are predicted to increase in frequency and magnitude in the future. In addition to these climate extremes, the freshwater realm is impacted by the exposure to various classes of chemicals emitted by anthropogenic activities. Currently, there is limited knowledge on how the combined exposure to HWs and chemicals affects the structure and functioning of freshwater ecosystems. Here, we review the available literature describing the single and combined effects of HWs and chemicals on different levels of biological organization, to obtain a holistic view of their potential interactive effects. We only found a few studies (13 out of the 61 studies included in this review) that investigated the biological effects of HWs in combination with chemical pollution. The reported interactive effects of HWs and chemicals varied largely not only within the different trophic levels but also depending on the studied endpoints for populations or individuals. Hence, owing also to the little number of studies available, no consistent interactive effects could be highlighted at any level of biological organization. Moreover, we found an imbalance towards single species and population experiments, with only five studies using a multitrophic approach. This results in a knowledge gap for relevant community and ecosystem level endpoints, which prevents the exploration of important indirect effects that can compromise food web stability. Moreover, this knowledge gap impairs the validity of chemical risk assessments and our ability to protect ecosystems. Finally, we highlight the urgency of integrating extreme events into multiple stressors studies and provide specific recommendations to guide further experimental research in this regard.
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Affiliation(s)
- Francesco Polazzo
- IMDEA Water Institute, Science and Technology Campus of the University of AlcaláAlcalá de HenaresSpain
| | - Sabrina K. Roth
- Department of Environmental ScienceStockholm UniversityStockholmSweden
| | - Markus Hermann
- Aquatic Ecology and Water Quality Management GroupWageningen UniversityWageningenThe Netherlands
| | - Annika Mangold‐Döring
- Aquatic Ecology and Water Quality Management GroupWageningen UniversityWageningenThe Netherlands
| | - Andreu Rico
- IMDEA Water Institute, Science and Technology Campus of the University of AlcaláAlcalá de HenaresSpain
- Cavanilles Institute of Biodiversity and Evolutionary BiologyUniversity of ValenciaValenciaSpain
| | - Anna Sobek
- Department of Environmental ScienceStockholm UniversityStockholmSweden
| | - Paul J. Van den Brink
- Aquatic Ecology and Water Quality Management GroupWageningen UniversityWageningenThe Netherlands
- Wageningen Environmental ResearchWageningenThe Netherlands
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Wu H, Hao B, Jo H, Cai Y. Seasonality and Species Specificity of Submerged Macrophyte Biomass in Shallow Lakes Under the Influence of Climate Warming and Eutrophication. FRONTIERS IN PLANT SCIENCE 2021; 12:678259. [PMID: 34659276 PMCID: PMC8517270 DOI: 10.3389/fpls.2021.678259] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 08/31/2021] [Indexed: 06/13/2023]
Abstract
Climate warming and eutrophication caused by anthropogenic activities strongly affect aquatic ecosystems. Submerged macrophytes usually play a key role in shallow lakes and can maintain a stable clear state. It is extremely important to study the effects of climate warming and eutrophication on the growth of submerged macrophytes in shallow lakes. However, the responses of submerged macrophytes to climate warming and eutrophication are still controversial. Additionally, the understanding of the main pathways impacting submerged macrophytes remains to be clarified. In addition, the influence of seasonality on the growth responses of submerged macrophytes to climate warming and eutrophication requires further elucidation. In this study, we conducted a series of mesocosm experiments with four replicates across four seasons to study the effects of rising temperature and nutrient enrichment on the biomass of two submerged macrophytes, Potamogeton crispus and Elodea canadensis. Our results demonstrated the seasonality and species specificity of plant biomass under the influence of climate warming and eutrophication, as well as the main explanatory factors in each season. Consistent with the seasonal results, the overall results showed that E. canadensis biomass was directly increased by rising temperature rather than by nutrient enrichment. Conversely, the overall results showed that P. crispus biomass was indirectly reduced by phosphorus enrichment via the strengthening of competition among primary producers. Distinct physiological and morphological traits may induce species-specific responses of submerged macrophytes to climate warming and eutrophication, indicating that further research should take interspecies differences into account.
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Affiliation(s)
- Haoping Wu
- Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China
- Department of Bioscience, Aarhus University, Silkeborg, Denmark
| | - Beibei Hao
- Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China
- Department of Bioscience, Aarhus University, Silkeborg, Denmark
| | - Hyunbin Jo
- Department of Bioscience, Aarhus University, Silkeborg, Denmark
- Institute for Environment and Energy, Pusan National University, Busan, South Korea
| | - Yanpeng Cai
- Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China
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