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Wang J, Bao S, Heino J, Liu Z, Xie P, Zhong X, Zhou Q. Interactive effects of aridity and local environmental factors on the functional trait composition and diversity of macroinvertebrate assemblages in dryland rivers. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 954:176671. [PMID: 39362532 DOI: 10.1016/j.scitotenv.2024.176671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2024] [Revised: 09/30/2024] [Accepted: 09/30/2024] [Indexed: 10/05/2024]
Abstract
Drought and local habitat alteration are major environmental stressors shaping the aquatic biota in dryland rivers. However, the combined effects of these factors on aquatic biodiversity remain poorly understood. We collected macroinvertebrate data from Central Asian dryland rivers in Xinjiang, China, from 2012 to 2022, to investigate the individual and interactive effects of drought (as indicated by increasing values of Aridity, AI) and local habitat conditions (fine sediments, velocity and pH) on aquatic macroinvertebrate functional trait composition and diversity. We found that interactions of the selected environmental stressors exhibited more frequent additive than synergistic or antagonistic effects, leading to shifts in macroinvertebrate functional trait composition and diversity accordingly. Interaction of AI and fine sediments showed more pronounced synergistic effects (positive or negative) compared to others and had positive influences on traits like small body size, ovoviviparity, etc. Functional diversity metrics responded differently to stressor interactions, with FRic and FDis being negatively affected, whereas FEve was positively correlated to stressor interaction, suggesting the complementary roles of functional diversity metrics to diagnose impacts of stressor interactions. Overall, our study provides new insights into macroinvertebrate assemblage-stressor relationships in dryland rivers and can help better assess, predict and manage aquatic biodiversity in these rivers under ongoing environmental change.
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Affiliation(s)
- Jun Wang
- Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affair, Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Eco-nomic Belt, Ministry of Education, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China
| | - Simin Bao
- Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affair, Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Eco-nomic Belt, Ministry of Education, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China
| | - Jani Heino
- Geography Research Unit, University of Oulu, P.O. Box 3000, FI-90014 Oulu, Finland
| | - Zhenyuan Liu
- Department of Ecology and Institute of Hydrobiology, Jinan University, Guangzhou 510632, China
| | - Peng Xie
- Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affair, Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Eco-nomic Belt, Ministry of Education, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China
| | - Xuefei Zhong
- Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affair, Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Eco-nomic Belt, Ministry of Education, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China
| | - Qiong Zhou
- Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affair, Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Eco-nomic Belt, Ministry of Education, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China.
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Gál B, Weiperth A, Farkas J, Schmera D. Road crossings change functional diversity and trait composition of stream-dwelling macroinvertebrate assemblages. Sci Rep 2023; 13:20698. [PMID: 38001350 PMCID: PMC10674018 DOI: 10.1038/s41598-023-47975-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 11/20/2023] [Indexed: 11/26/2023] Open
Abstract
Functional diversity is regarded as a key concept in understanding the link between ecosystem function and biodiversity, and is therefore widely investigated in relation to human-induced impacts. However, information on how the intersection of roads and streams (hereafter road crossings, representing a widespread habitat transformation in relation to human development), influences the functional diversity of stream-dwelling macroinvertebrates is still missing. The general aim of our study was to provide a comprehensible picture on the impacts of road crossing structures on multiple facets of the functional diversity of stream-dwelling macroinvertebrates. In addition, we also investigated changes in trait structure. Our research showed that road crossing structures had negative impacts on functional richness and dispersion; i.e., functional diversification. However, we found no significant impact on functional divergence and evenness components. We found a decrease in functional redundancy at road crossing structures. This indicates a reduced ability of the community to recover from disturbances. Finally, we found that road crossings drive stream habitat and hydrological changes in parallel with modification of the trait composition of stream-dwelling macroinvertebrate assemblages. All these results suggest that road crossings cause notable changes in the functional diversity of stream-dwelling macroinvertebrate assemblages.
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Affiliation(s)
- Blanka Gál
- Balaton Limnological Research Institute, Klebelsberg K. u. 3, 8237, Tihany, Hungary.
- National Laboratory for Water Science and Water Security, Balaton Limnological Research Institute, Klebelsberg K. u. 3, 8237, Tihany, Hungary.
| | - András Weiperth
- Department of Freshwater Fish Ecology, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, Páter Károly u. 1, Gödöllő, 2103, Hungary
- Department of Systematic Zoology and Ecology, Institute of Biology, ELTE Eötvös Loránd University, Pázmány Péter sétány 1/C, 1117, Budapest, Hungary
| | - János Farkas
- Department of Systematic Zoology and Ecology, Institute of Biology, ELTE Eötvös Loránd University, Pázmány Péter sétány 1/C, 1117, Budapest, Hungary
| | - Dénes Schmera
- Balaton Limnological Research Institute, Klebelsberg K. u. 3, 8237, Tihany, Hungary
- National Laboratory for Water Science and Water Security, Balaton Limnological Research Institute, Klebelsberg K. u. 3, 8237, Tihany, Hungary
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Rettig K, Semmler-Elpers R, Brettschneider D, Hering D, Feld CK. Of causes and symptoms: using monitoring data and expert knowledge to diagnose the causes of stream degradation. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:1253. [PMID: 37768406 PMCID: PMC10539194 DOI: 10.1007/s10661-023-11741-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 08/17/2023] [Indexed: 09/29/2023]
Abstract
Ecological status assessment under the European Water Framework Directive (WFD) often integrates the impact of multiple stressors into a single index value. This hampers the identification of individual stressors being responsible for status deterioration. As a consequence, management measures are often disentangled from assessment results. To close this gap and to support river basin managers in the diagnosis of stressors, we linked numerous macroinvertebrate assessment metrics and one diatom index with potential causes of ecological deterioration through Bayesian belief networks (BBNs). The BBNs were informed by WFD monitoring data as well as regular consultation with experts and allow to estimate the probabilities of individual degradation causes based upon a selection of biological metrics. Macroinvertebrate metrics were shown to be stronger linked to hydromorphological conditions and land use than to water quality-related parameters (e.g., thermal and nutrient pollution). The modeled probabilities also allow to order the potential causes of degradation hierarchically. The comparison of assessment metrics showed that compositional and trait-based community metrics performed equally well in the diagnosis. The testing of the BBNs by experts resulted in an agreement between model output and expert opinion of 17-92% for individual stressors. Overall, the expert-based validation confirmed a good diagnostic potential of the BBNs; on average 80% of the diagnosed causes were in agreement with expert judgement. We conclude that diagnostic BBNs can assist the identification of causes of stream and river degradation and thereby inform the derivation of appropriate management decisions.
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Affiliation(s)
- Katharina Rettig
- Faculty of Biology, Aquatic Ecology, University of Duisburg-Essen, Universitätsstr. 5, Essen, 45141, Germany.
| | - Renate Semmler-Elpers
- State Agency for the Environment Baden-Württemberg, Griesbachstr. 1, Karlsruhe, 76185, Germany
| | - Denise Brettschneider
- State Agency for the Environment Baden-Württemberg, Griesbachstr. 1, Karlsruhe, 76185, Germany
| | - Daniel Hering
- Faculty of Biology, Aquatic Ecology, University of Duisburg-Essen, Universitätsstr. 5, Essen, 45141, Germany
- Center for Water and Environmental Research, University of Duisburg-Essen, Universitätsstr. 2, Essen, 45141, Germany
| | - Christian K Feld
- Faculty of Biology, Aquatic Ecology, University of Duisburg-Essen, Universitätsstr. 5, Essen, 45141, Germany
- Center for Water and Environmental Research, University of Duisburg-Essen, Universitätsstr. 2, Essen, 45141, Germany
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Linking Micropollutants to Trait Syndromes across Freshwater Diatom, Macroinvertebrate, and Fish Assemblages. WATER 2022. [DOI: 10.3390/w14081184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The ecological quality of freshwater ecosystems is endangered by various micropollutants released into the environment by human activities. The cumulative effects of these micropollutants can affect the fitness of organisms and populations and the functional diversity of stream ecosystems. In this study, we investigated the relationships between the joint toxicity of micropollutants and trait syndromes. A trait syndrome corresponds to a combination of traits that could occur together in communities due to the trait selection driven by exposure to these micropollutants. Our objectives were to (i) identify trait syndromes specific to diatom, macroinvertebrate, and fish assemblages and their responses to exposure, taking into account four micropollutant types (mineral micropollutants, pesticides, PAHs, and other organic micropollutants) and nine modes of action (only for pesticides), (ii) explore how these syndromes vary within and among the three biological compartments, (iii) investigate the trait categories driving the responses of syndromes to micropollutant exposure, and (iv) identify specific taxa, so-called paragons, which are highly representative of these syndromes. To achieve these objectives, we analyzed a dataset including the biological and physico-chemical results of 2007 sampling events from a large-scale monitoring survey routinely performed in French wadeable streams. We have identified five (diatoms), eight (macroinvertebrates), and eight (fishes) trait syndromes, either positively or negatively related to an increasing toxicity gradient of different clusters of micropollutant types or modes of action. Our analyses identified several key trait categories and sets of paragons, exhibiting good potential for highlighting exposure by specific micropollutant types and modes of action. Overall, trait syndromes might represent a novel and integrative bioassessment tool, driven by the diversity of trait-based responses to increasing gradients of micropollutant toxic cocktails.
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Jabiol J, Chauvet E, Guérold F, Bouquerel J, Usseglio-Polatera P, Artigas J, Margoum C, Le Dréau M, Moreira A, Mazzella N, Gouy V. The combination of chemical, structural, and functional indicators to evaluate the anthropogenic impacts on agricultural stream ecosystems. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:29296-29313. [PMID: 34647214 DOI: 10.1007/s11356-021-16925-5] [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: 04/12/2021] [Accepted: 10/03/2021] [Indexed: 06/13/2023]
Abstract
Freshwater contamination by pesticides in agricultural landscapes is of increasing concern worldwide, with strong pesticide impacts on biodiversity, ecosystem functions, and ultimately human health (drinking water, fishing). In addition, the excessively large number of substances, as well as their low - and temporally variable - concentrations in water, make the chemical monitoring by grab sampling very demanding and not fully representative of the actual contamination. Tools that integrate temporal variations and that are ecologically relevant are clearly needed to improve the monitoring of freshwater contamination and assess its biological effects. Here, we studied pesticide contamination and its biological impacts in 10 stream sections (sites) belonging to 3 agricultural catchments in France. In each site, we deployed a combination of pesticide integrative samplers, biocenotic indicators based on benthic macroinvertebrates, and functional indicators based on leaf litter decomposition and associated fungal communities. The 3 approaches largely proved complementary: structural and functional indicators did not respond equally to different agricultural impacts such as pesticide contamination (as revealed by integrative samplers), nutrients, or oxygen depletion. Combining chemical, structural, and functional indicators thus seems an excellent strategy to provide a comprehensive picture of agricultural impacts on stream ecosystems.
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Affiliation(s)
- Jérémy Jabiol
- HYFE (Hydrobiologie Et Fonctionnement Des Ecosystèmes), Elven, France.
- Laboratoire Ecologie Fonctionnelle et Environnement, Université de Toulouse, CNRS, INPT, Toulouse, France.
- LIEC (Laboratoire Interdisciplinaire Des Environnements Continentaux), Université de Lorraine, CNRS, Metz, France.
- Laboratoire Microorganismes : Génome Et Environnement (LMGE), Université Clermont Auvergne, CNRS, Clermont-Ferrand, France.
| | - Eric Chauvet
- Laboratoire Ecologie Fonctionnelle et Environnement, Université de Toulouse, CNRS, INPT, Toulouse, France
| | - François Guérold
- LIEC (Laboratoire Interdisciplinaire Des Environnements Continentaux), Université de Lorraine, CNRS, Metz, France
| | - Jonathan Bouquerel
- LIEC (Laboratoire Interdisciplinaire Des Environnements Continentaux), Université de Lorraine, CNRS, Metz, France
| | - Philippe Usseglio-Polatera
- LIEC (Laboratoire Interdisciplinaire Des Environnements Continentaux), Université de Lorraine, CNRS, Metz, France
| | - Joan Artigas
- Laboratoire Microorganismes : Génome Et Environnement (LMGE), Université Clermont Auvergne, CNRS, Clermont-Ferrand, France
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Responses of Macroinvertebrate Communities to Hydromorphological Restoration of Headwater Streams in Brittany. WATER 2022. [DOI: 10.3390/w14040553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Indices of fauna communities, including macroinvertebrates, have been widely used as indicators of environmental changes in streams with great success. However, in the evaluations of in-stream restorations, results from the deployment of macroinvertebrate community indices as bio-indicators have been inconclusive, with scanty evidence for success. This study aims to determine if in headwater streams, and particularly according to the type of in-stream restoration studied (i.e., suppression of concrete pipe), bio-indicators based on macroinvertebrate can be relevant. We monitored three headwater stream reaches where artificial structures constituting hydromorphological impairments to the streams were removed. We collected macroinvertebrate samples from impacted stream sections and control sites established along the streams. Samples were collected before and after the restoration activities, in a before-after-control-impact (BACI) study design. We used two macroinvertebrate-based multimetric tools (I2M2 and ERA) to evaluate the ecological status of the streams, based on macroinvertebrate community indices, and to identify the relative contributions of watershed anthropic pressures to the ecological status. We found that the removal of the artificial structures and the restoration of natural flow were successful in reducing clogging. However, only taxonomic richness showed a positive significant change. The results indicate that the presence of confounding factors, not addressed by the restoration works, may have been responsible for this minimal success in biodiversity recovery. Although the multimetric assessment tools were able to differentiate between streams and disentangle the effects of multiple pressures contributing to degradation in the streams, they were limited to a level below the watershed scale. Our results showed that for a better outcome for macroinvertebrate biodiversity improvement, methods of in-stream restorations must consider the multiple pressures contributing to the degradation of fauna communities in watersheds.
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Dolédec S, Simon L, Blemus J, Rigal A, Robin J, Mermillod-Blondin F. Multiple stressors shape invertebrate assemblages and reduce their trophic niche: A case study in a regulated stream. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 773:145061. [PMID: 33940713 DOI: 10.1016/j.scitotenv.2021.145061] [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: 07/17/2020] [Revised: 10/12/2020] [Accepted: 12/06/2020] [Indexed: 06/12/2023]
Abstract
UNLABELLED Few studies have addressed how the diversity of basal resources change with stream regulation and the potential consequences on river biota. We sampled invertebrates above and below a series of dams, over two years, at both downwelling and upwelling zones. In each zone, we recorded the daily temperature and flow variations, estimated the algal development, measured the available resources, and analysed carbon and nitrogen stable isotope compositions of the invertebrate community. The number of hydrological pulses were typically higher below the dams than above the dams especially during high-flow periods whereas the groundwater outlets had minor effects on invertebrate assemblages. Invertebrate abundance, richness and diversity tended to decrease below the dams. Co-inertia analysis showed that flow and temperature variations, and eutrophication explained most of the variance in the invertebrate assemblages, which comprised a higher number of resilient taxa below than above the dams. The proportions of pesticide-sensitive invertebrates were lower below the dams and ovoviviparous and more generalist taxa were prominent. We did not observe the expected CPOM decrease and FPOM increase downstream. Accordingly, the proportions of each functional feeding group were remarkably similar above and below the dams despite the long distance between the sectors (>100 kms). The diversity of basal resources used within assemblages progressively increased downstream above dams. In contrast, the diversity of resources used by organisms below the dams decreased from upstream to downstream suggesting a significant influence of flow regulation on aquatic food webs. Finally, the shorter trophic chains for the invertebrate assemblages below the dams suggests that the effects of stream regulation and eutrophication induced a simplification of food webs. To our knowledge, this study is the first to connect taxonomic and functional trait changes in response to multiple stressors with the associated modifications in isotopic niches within aquatic invertebrate assemblages. CONTEXT Understanding how stream regulation and associated anthropogenic pressures act on aquatic assemblages and trophic niches is necessary to guide management actions. GOAL We aimed to investigate the functional responses (traits and trophic niches) of aquatic invertebrate assemblages to stream regulation and eutrophication. METHODS We used univariate and multivariate analyses to compare the invertebrate assemblages above and below the dams and to assess the contributions of hydrology (including groundwater supplies to the river), temperature and eutrophication to the variability in the composition of invertebrate assemblages. We also considered the relative utilization of a selected set of traits describing invertebrate resilience, resistance and specialization to address the potential functional effects of stream regulation on invertebrate assemblages. Finally, carbon and nitrogen isotope analyses allowed us to characterize the length and width of invertebrate assemblage food webs as related to the availability and diversity of basal resources. RESULTS Invertebrate abundance and richness generally decreased below the dams, with the highest impacts on insect taxa. Co-inertia analysis showed that stream regulation and eutrophication were main drivers of the aquatic invertebrate assemblages. The analysis separated the sites above and below the dams according to flow and temperature variation, whereas eutrophication appeared as a secondary stressor that separated the sites within each sector. Furthermore, the series of dams resulted in (i) a higher proportion of resilient (e.g., multivoltine) and resistant (ovoviviparous) taxa and a majority of generalists in assemblages below dams, (ii) an impact on the classical dynamics of CPOM (decrease) and FPOM (increase) sources from upstream to downstream, and (iii) a reduction in the diversity of resource use and in the trophic chain length of invertebrate assemblages below dams. The cooler and less oxygenated upwelling zones had lower invertebrate abundance; however, contrary to our expectation, the variation in the groundwater supply did not affect the composition of epigean invertebrate assemblages. CONCLUSION This study provides insights about the impacts of flow regime alteration and eutrophication on food webs that may have been caused by regulation of permanent streams. To our knowledge, this is the first to connect taxonomic and functional trait changes in response to multiple stressors with the associated modifications in energy fluxes in aquatic invertebrate assemblages. This study suggests that bed stability, which is associated with a reduction in channel mobility below the dams and with moderate eutrophication, may provide the shelter and resources that can locally favour invertebrate assemblage dynamics and lessen the effects of flow regulation. In addition, the study suggests that the biological trait-based approach and isotope analysis are complementary approaches for addressing ecosystem functioning. The relative utilization of traits indicates the functional potential of aquatic invertebrate assemblages to face multiple stressors whereas isotope analysis is an expression of the actual effect of the stressors on the trophic structure of aquatic invertebrate assemblages.
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Affiliation(s)
- Sylvain Dolédec
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR 5023 LEHNA, F-69622 Villeurbanne, France.
| | - Laurent Simon
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR 5023 LEHNA, F-69622 Villeurbanne, France
| | - Jérémie Blemus
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR 5023 LEHNA, F-69622 Villeurbanne, France
| | - Amandine Rigal
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR 5023 LEHNA, F-69622 Villeurbanne, France
| | - Joël Robin
- Univ Lyon, ISARA, Agroecology and Environment research unit, F-69364 Lyon Cedex 07, France
| | - Florian Mermillod-Blondin
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR 5023 LEHNA, F-69622 Villeurbanne, France
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Reiber L, Knillmann S, Kaske O, Atencio LC, Bittner L, Albrecht JE, Götz A, Fahl AK, Beckers LM, Krauss M, Henkelmann B, Schramm KW, Inostroza PA, Schinkel L, Brauns M, Weitere M, Brack W, Liess M. Long-term effects of a catastrophic insecticide spill on stream invertebrates. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 768:144456. [PMID: 33453533 DOI: 10.1016/j.scitotenv.2020.144456] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 12/03/2020] [Accepted: 12/07/2020] [Indexed: 06/12/2023]
Abstract
Accidental spills or illegal discharges of pesticides in aquatic ecosystems can lead to exposure levels that strongly exceed authorized pesticide concentrations, causing major impacts on aquatic ecosystems. Such short-term events often remain undetected in regular monitoring programs with infrequent sampling. In early spring 2015, we identified a catastrophic pesticide spill with the insecticide cypermethrin in the Holtemme River, Germany. Based on existing pre-event macroinvertebrate community data, we monitored the effects and recovery of the macroinvertebrate community for more than two years after the spill. Strong short-term effects were apparent for all taxa with the exception of Chironomidae and Tubificidae. Effects could also be observed on the community level as total abundance, taxa number and biomass strongly decreased. Total abundance and taxa number showed a fast recovery. Regarding long-term effects, the total biomass remained substantially below the pre-contamination level (76%) until the end of the study. Also the abundances of three taxa (Gammarus, Leuctra, Limnius Ad.) did not return to levels prior to the spill even after 26 months. This lack of the taxon-specific recovery was likely due to their long generation time and a low migration ability due to a restricted connectivity between the contaminated site and uncontaminated stream sections. These factors proved to be stronger predictors for the recovery than the pesticide tolerance. We revealed that the biological indicators SPEARpesticides and share of Ephemeroptera, Plecoptera and Trichoptera (EPT) are not suitable for the identification of such extreme events, when nearly all taxa are eradicated. Both indicators are functioning only when repeated stressors initiate long-term competitive replacement of sensitive by insensitive taxa. We conclude that pesticide spills can have significant long-term effects on stream macroinvertebrate communities. Regular ecological monitoring is imperative to identify such ecosystem impairments, combined with analytical chemistry methods to identify the potential sources of spills.
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Affiliation(s)
- 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), Worringer Weg 1, 52074 Aachen, Germany.
| | - Saskia Knillmann
- Helmholtz Centre for Environmental Research - UFZ, Department of System-Ecotoxicology, Permoserstr. 15, 04318 Leipzig, Germany
| | - Oliver Kaske
- Helmholtz Centre for Environmental Research - UFZ, Department of System-Ecotoxicology, Permoserstr. 15, 04318 Leipzig, Germany
| | - Liseth C Atencio
- Helmholtz Centre for Environmental Research - UFZ, Department of System-Ecotoxicology, Permoserstr. 15, 04318 Leipzig, Germany
| | - Lisa Bittner
- Helmholtz Centre for Environmental Research - UFZ, Department of System-Ecotoxicology, Permoserstr. 15, 04318 Leipzig, Germany
| | - Julia E Albrecht
- Helmholtz Centre for Environmental Research - UFZ, Department of System-Ecotoxicology, Permoserstr. 15, 04318 Leipzig, Germany
| | - Astrid Götz
- Helmholtz Centre for Environmental Research - UFZ, Department of System-Ecotoxicology, Permoserstr. 15, 04318 Leipzig, Germany; Technical University of Munich - TUM, Aquatic Systems Biology Unit, School of Life Sciences Weihenstephan, Mühlenweg 22, 85354 Freising Weihenstephan, Germany
| | - Ann-Katrin Fahl
- Helmholtz Centre for Environmental Research - UFZ, Department of System-Ecotoxicology, Permoserstr. 15, 04318 Leipzig, Germany
| | - Liza-Marie Beckers
- Helmholtz Centre for Environmental Research - UFZ, Department of Effect-Directed Analysis, Permoserstr. 15, 04318 Leipzig, Germany
| | - Martin Krauss
- Helmholtz Centre for Environmental Research - UFZ, Department of Effect-Directed Analysis, Permoserstr. 15, 04318 Leipzig, Germany
| | - Bernhard Henkelmann
- Helmholtz Zentrum Munich - German Research Center for Environmental Health, Molecular EXposomics, Ingolstädter Landstr. 1, 85764 Neuherberg, Germany
| | - Karl-Werner Schramm
- Helmholtz Zentrum Munich - German Research Center for Environmental Health, Molecular EXposomics, Ingolstädter Landstr. 1, 85764 Neuherberg, Germany; Technical University of Munich - TUM, Research Department Biosciences, Weihenstephaner Steig 23, 85350 Freising, Germany
| | - Pedro A Inostroza
- Helmholtz Centre for Environmental Research - UFZ, Department of Effect-Directed Analysis, Permoserstr. 15, 04318 Leipzig, Germany; University of Gothenburg, Department of Biological and Environmental Sciences, PO Box 461, 405 30 Gothenburg, Sweden
| | - Lena Schinkel
- Helmholtz Centre for Environmental Research - UFZ, Department of Effect-Directed Analysis, Permoserstr. 15, 04318 Leipzig, Germany; Eawag, Swiss Federal Institute of Aquatic Research & Technology, Überlandstr. 133, 8600 Dübendorf, Switzerland
| | - Mario Brauns
- Helmholtz Centre for Environmental Research - UFZ, Department River Ecology, Brückstr. 3a, 39114 Magdeburg, Germany
| | - Markus Weitere
- Helmholtz Centre for Environmental Research - UFZ, Department River Ecology, Brückstr. 3a, 39114 Magdeburg, Germany
| | - Werner Brack
- Helmholtz Centre for Environmental Research - UFZ, Department of Effect-Directed Analysis, Permoserstr. 15, 04318 Leipzig, Germany; Goethe University Frankfurt, Department of Evolutionary Ecology and Environmental Toxicology, Faculty of Biological Sciences, Max-von-Laue-Str. 13, 60438 Frankfurt am Main, 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), Worringer Weg 1, 52074 Aachen, Germany.
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Alric B, Dézerald O, Meyer A, Billoir E, Coulaud R, Larras F, Mondy CP, Usseglio-Polatera P. How diatom-, invertebrate- and fish-based diagnostic tools can support the ecological assessment of rivers in a multi-pressure context: Temporal trends over the past two decades in France. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 762:143915. [PMID: 33360450 DOI: 10.1016/j.scitotenv.2020.143915] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 10/16/2020] [Accepted: 11/19/2020] [Indexed: 06/12/2023]
Abstract
The degradation of aquatic ecosystems, induced by worldwide intensification in the use of both land and aquatic resources, has highlighted the critical need for innovative methods allowing an objective quantification and ranking of anthropogenic pressure effects on aquatic organisms. Such diagnostic tools have a great potential for defining robust management responses to anthropogenic pressures. Our objective was to explore how the outputs of three diagnostic tools (based on benthic diatoms, macroinvertebrates and fishes) could be combined to (i) disentangle the temporal effects of multiple pressures over two decades and (ii) provide policy-relevant information for stream managers and decision makers. The diagnostic tools estimated, using taxonomy- and trait-based metrics, the impairment probabilities of biotic assemblages over time by different pressure categories, describing the alteration of water quality, hydromorphology and land use related to anthropogenic activities, in French streams (number of sites = 312). The main result shows that a large proportion of the time series exhibited no significant temporal patterns over the two decades (61.5% to 87.8%, depending on the used tests). Among time series exhibiting significant change, positive trends in impairment probabilities (i.e., degradation) were less frequent than negative ones, indicating a modest improvement in water quality at national scale over the study period. However, trends can be substantially different according to hydroecoregion and pressure category. The three biological compartments displayed convergent temporal responses according to the pressure category and regional context (e.g., lowland plains vs. mountains, pristine vs. agricultural regions). Altogether, this study proposes a unifying approach to integrate a vast amount of information in a single ecological diagnosis using an unparalleled database on natural and anthropized environments. Strengthening the synthesis of biological information provided by various biological compartments should be a priority before implementing evidence-based sustainable conservation and restoration actions.
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Affiliation(s)
- Benjamin Alric
- Université de Lorraine, CNRS, LIEC, F-57000 Metz, France
| | - Olivier Dézerald
- ESE, Ecology and Ecosystems Health, INRAE, Agrocampus Ouest, F-35042 Rennes, France
| | - Albin Meyer
- Université de Lorraine, CNRS, LIEC, F-57000 Metz, France
| | - Elise Billoir
- Université de Lorraine, CNRS, LIEC, F-57000 Metz, France
| | - Romain Coulaud
- Université Le Havre Normandie, UMR-I 02, SEBIO, F-76063 Le Havre, France
| | - Floriane Larras
- Helmholtz-Centre for Environmental Research UFZ, Department of Bioanalytical Ecotoxicology, D-04318 Leipzig, Germany
| | - Cédric P Mondy
- Office Français de la Biodiversité, Direction Régionale Ile-de-France, F-94300 Vincennes, France
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10
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Assessing the Ecological Status of European Rivers and Lakes Using Benthic Invertebrate Communities: A Practical Catalogue of Metrics and Methods. WATER 2021. [DOI: 10.3390/w13030346] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The Water Framework Directive requires that the ecological status of surface waters be monitored and managed if necessary. A central function in ecological status assessment has the Biological Quality Elements—organisms inhabiting surface waters—by indicating human impact on their habitat. For benthic invertebrates, a wide array of national methods are used, but to date no comprehensive summary of metrics and methods is available. In this study, we summarize the benthic invertebrate community metrics used in national systems to assess the ecological status of rivers, (very) large rivers, and lakes. Currently, benthic invertebrate assemblages are used in 26 national assessment systems for rivers, 13 assessment systems for very large rivers, and 21 assessment systems for lakes in the EU. In the majority of systems, the same metrics and modules are used. In the Red Queen’s race of ecosystem management this may be a disadvantage as these same metrics and module likely depict the same stressors but there is growing evidence that aquatic ecosystems are subject to highly differentiated, complex multiple stressor impacts. Method development should be fostered to identify and rank impacts in multi-stressor environments. DNA-based biomonitoring 2.0 offers to detect stressors with greater accuracy—if new tools are calibrated.
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11
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Ficetola GF, Boyer F, Valentini A, Bonin A, Meyer A, Dejean T, Gaboriaud C, Usseglio-Polatera P, Taberlet P. Comparison of markers for the monitoring of freshwater benthic biodiversity through DNA metabarcoding. Mol Ecol 2020; 30:3189-3202. [PMID: 32920861 DOI: 10.1111/mec.15632] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 08/16/2020] [Accepted: 08/27/2020] [Indexed: 12/22/2022]
Abstract
Metabarcoding of bulk or environmental DNA has great potential for biomonitoring of freshwater environments. However, successful application of metabarcoding to biodiversity monitoring requires universal primers with high taxonomic coverage that amplify highly variable, short metabarcodes with high taxonomic resolution. Moreover, reliable and extensive reference databases are essential to match the outcome of metabarcoding analyses with available taxonomy and biomonitoring indices. Benthic invertebrates, particularly insects, are key taxa for freshwater bioassessment. Nevertheless, few studies have so far assessed markers for metabarcoding of freshwater macrobenthos. Here we combined in silico and laboratory analyses to test the performance of different markers amplifying regions in the 18S rDNA (Euka02), 16S rDNA (Inse01) and COI (BF1_BR2-COI) genes, and developed an extensive database of benthic macroinvertebrates of France and Europe, with a particular focus on key insect orders (Ephemeroptera, Plecoptera and Trichoptera). Analyses on 1,514 individuals representing different taxa of benthic macroinvertebrates showed very different amplification success across primer combinations. The Euka02 marker showed the highest universality, while the Inse01 marker showed excellent performance for the amplification of insects. BF1_BR2-COI showed the highest resolution, while the resolution of Euka02 was often limited. By combining our data with GenBank information, we developed a curated database including sequences representing 822 genera. The heterogeneous performance of the different primers highlights the complexity in identifying the best markers, and advocates for the integration of multiple metabarcodes for a more comprehensive and accurate understanding of ecological impacts on freshwater biodiversity.
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Affiliation(s)
- Gentile Francesco Ficetola
- LECA, Laboratoire d'Ecologie Alpine, Univ. Grenoble Alpes, CNRS, Univ. Savoie Mont Blanc, Grenoble, France.,Department of Environmental Sciences and Policy, University of Milano, Milano, Italy
| | - Frédéric Boyer
- LECA, Laboratoire d'Ecologie Alpine, Univ. Grenoble Alpes, CNRS, Univ. Savoie Mont Blanc, Grenoble, France
| | | | - Aurélie Bonin
- LECA, Laboratoire d'Ecologie Alpine, Univ. Grenoble Alpes, CNRS, Univ. Savoie Mont Blanc, Grenoble, France.,Department of Environmental Sciences and Policy, University of Milano, Milano, Italy
| | - Albin Meyer
- Université de Lorraine, CNRS, LIEC, Metz, France
| | | | | | | | - Pierre Taberlet
- LECA, Laboratoire d'Ecologie Alpine, Univ. Grenoble Alpes, CNRS, Univ. Savoie Mont Blanc, Grenoble, France.,UiT - The Arctic University of Norway, Tromsø Museum, Tromsø, Norway
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12
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Dézerald O, Mondy CP, Dembski S, Kreutzenberger K, Reyjol Y, Chandesris A, Valette L, Brosse S, Toussaint A, Belliard J, Merg ML, Usseglio-Polatera P. A diagnosis-based approach to assess specific risks of river degradation in a multiple pressure context: Insights from fish communities. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 734:139467. [PMID: 32470662 DOI: 10.1016/j.scitotenv.2020.139467] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 04/27/2020] [Accepted: 05/13/2020] [Indexed: 06/11/2023]
Abstract
In the context of increasing pressure on water bodies, many fish-based indices have been developed to evaluate the ecological status of rivers. However, most of these indices suffer from several limitations, which hamper the capacity of water managers to select the most appropriate measures of restoration. Those limitations include: (i) being dependent on reference conditions, (ii) not satisfactorily handling complex and non-linear biological responses to pressure gradients, and (iii) being unable to identify specific risks of stream degradation in a multi-pressure context. To tackle those issues, we developed a diagnosis-based approach using Random Forest models to predict the impairment probabilities of river fish communities by 28 pressure categories (chemical, hydromorphological and biological). In addition, the database includes the abundances of 72 fish species collected from 1527 sites in France, sampled between 2005 and 2015; and fish taxonomic and biological information. Twenty random forest models provided at least good performances when evaluating impairment probabilities of fish communities by those pressures. The best performing models indicated that fish communities were impacted, on average, by 7.34 ± 0.03 abiotic pressure categories (mean ± SE), and that hydromorphological alterations (5.27 ± 0.02) were more often detected than chemical ones (2.06 ± 0.02). These models showed that alterations in longitudinal continuity, and contaminations by Polycyclic Aromatic Hydrocarbons were respectively the most frequent hydromorphological and chemical pressure categories in French rivers. This approach has also efficiently detected the functional impact of invasive alien species. Identifying and ranking the impacts of multiple anthropogenic pressures that trigger functional shifts in river biological communities is essential for managers to prioritize actions and to implement appropriate restoration programmes. Actually implemented in an R package, this approach has the capacity to detect a variety of impairments, resulting in an efficient assessment of ecological risks across various spatial and temporal scales.
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Affiliation(s)
- Olivier Dézerald
- ESE, Ecology and Ecosystems Health, INRAE, Agrocampus Ouest, 35042 Rennes, France; Université de Lorraine, CNRS, LIEC, F-57000 Metz, France.
| | - Cédric P Mondy
- Office Français de la Biodiversité, Direction Régionale Ile-de-France, 12 cours Lumière, F-94300 Vincennes, France
| | - Samuel Dembski
- Office Français de la Biodiversité, Direction Régionale Ile-de-France, 12 cours Lumière, F-94300 Vincennes, France
| | - Karl Kreutzenberger
- Office Français de la Biodiversité, Direction Générale, 35042 Rennes, France
| | - Yorick Reyjol
- UMS Patrinat (OFB-CNRS-MNHN), Muséum national d'Histoire naturelle CP41, 36 rue Geoffroy Saint-Hilaire, 75005 Paris, France
| | - André Chandesris
- INRAE, UR Riverly, 5 rue de la Doua - CS 20244, 69625 Villeurbanne Cedex, France
| | - Laurent Valette
- INRAE, UR Riverly, 5 rue de la Doua - CS 20244, 69625 Villeurbanne Cedex, France
| | - Sébastien Brosse
- Laboratoire Evolution et Diversité Biologique, UMR 5174 UPS-CNRS-IRD, Université Paul Sabatier, 118 route de Narbonne, F-31062 Toulouse, France
| | - Aurèle Toussaint
- Institute of Ecology and Earth Sciences, University of Tartu, Lai 40, Tartu 51005, Estonia
| | - Jérôme Belliard
- Université Paris-Saclay, INRAE, UR HYCAR, 92160 Antony, France
| | - Marie-Line Merg
- Université Paris-Saclay, INRAE, UR HYCAR, 92160 Antony, France
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13
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Magliozzi C, Usseglio‐Polatera P, Meyer A, Grabowski RC. Functional traits of hyporheic and benthic invertebrates reveal importance of wood‐driven geomorphological processes in rivers. Funct Ecol 2019. [DOI: 10.1111/1365-2435.13381] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chiara Magliozzi
- Water Science Institute, School of Water, Energy and Environment Cranfield University Cranfield UK
| | - Philippe Usseglio‐Polatera
- Laboratoire Interdisciplinaire des Environnements Continentaux (LIEC, CNRS UMR 7360) Université de Lorraine Metz France
| | - Albin Meyer
- Laboratoire Interdisciplinaire des Environnements Continentaux (LIEC, CNRS UMR 7360) Université de Lorraine Metz France
| | - Robert C. Grabowski
- Water Science Institute, School of Water, Energy and Environment Cranfield University Cranfield UK
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14
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Desrosiers M, Usseglio-Polatera P, Archaimbault V, Larras F, Méthot G, Pinel-Alloul B. Assessing anthropogenic pressure in the St. Lawrence River using traits of benthic macroinvertebrates. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 649:233-246. [PMID: 30173032 DOI: 10.1016/j.scitotenv.2018.08.267] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 07/27/2018] [Accepted: 08/20/2018] [Indexed: 06/08/2023]
Abstract
This study aims to evaluate the anthropogenic pressure in the St. Lawrence River by assessing the relationships between chemical contamination of sediments and benthic community structure with the trait-based approach. Organic and inorganic contaminants as well as other sediment variables (sediment grain size, total organic carbon, nutrients, etc.) and benthic invertebrate assemblages were determined in 59 sites along the river. Biological and ecological traits of taxa were coded, taking into account regional climate and ecosystem conditions. The aims of this study were to (1) describe the relationships between traits and macroinvertebrate taxa and identify homogeneous clusters of taxa with the same combinations of functional traits, (2) describe spatial patterns in traits of macroinvertebrates in the St. Lawrence River, (3) link trait-based metrics and site groups to sediment quality and (4) define a trait-based strategy for diagnosing the ecological quality of the St. Lawrence River. Seven groups of taxa sharing similar trait-category attributes were defined. Moreover, four groups of sites were identified using the 'K-mean' non-hierarchical clustering approach. The 'IndVal' method enabled us to specifically defined trait categories corresponding to site groups on the basis of their indicator value. The relative abundances of taxa from five functional groups significantly varied among site groups. For example, some indicator traits such as multivoltine cycle, long life span, fixed clutches, tegumental respiration, asexual reproduction, and collector/gatherer feeding habit were associated to the most heavily polluted sites located in the Montreal harbour which showed the highest sediment concentrations in Pb, Zn and Cu. Three trait-based pressure-specific models were built, based on the random forest approach, for respectively (1) heavy metals, (2) BPCs and PAHs, and (3) TBTs occurring in the environment. These models could be applied to assess sediment quality using macroinvertebrate assemblages in a large Canadian river.
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Affiliation(s)
- Mélanie Desrosiers
- Centre d'expertise en analyse environnementale du Québec, ministère du Développement durable, de l'Environnement et de la Lutte contre les changements climatiques, 2700 rue Einstein, Québec GIP 3W8, Canada.
| | | | - Virginie Archaimbault
- IRSTEA, HBAN, Direction Régionale d'Antony, 1 Rue Pierre-Gilles de Gennes, CS10030, F-92761 Antony Cedex, France.
| | - Floriane Larras
- Université du Lorraine, LIEC, CNRS UMR 7360, Avenue du Général Delestraint, F-57070 Metz, France.
| | - Ginette Méthot
- GRIL, Département de Sciences Biologiques, Université de Montréal, C.P. 6128, Succ. Centre-Ville, Montréal H3C 3J7, Québec, Canada
| | - Bernadette Pinel-Alloul
- GRIL, Département de Sciences Biologiques, Université de Montréal, C.P. 6128, Succ. Centre-Ville, Montréal H3C 3J7, Québec, Canada.
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15
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Calapez AR, Serra SRQ, Santos JM, Branco P, Ferreira T, Hein T, Brito AG, Feio MJ. The effect of hypoxia and flow decrease in macroinvertebrate functional responses: A trait-based approach to multiple-stressors in mesocosms. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 637-638:647-656. [PMID: 29758421 DOI: 10.1016/j.scitotenv.2018.05.071] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Revised: 05/04/2018] [Accepted: 05/05/2018] [Indexed: 06/08/2023]
Abstract
River ecosystems are most often subject to multiple co-occurring anthropogenic stressors. Mediterranean streams are particularly affected by water scarcity and organic loads that commonly lead to a simultaneous reduction in flow and increasing depletion of dissolved oxygen. In the present study, the single and combined effects of water scarcity (flow velocity reduction) and dissolved oxygen depletion were used to evaluate alterations of drifting macroinvertebrates on a channel mesocosm system, by employing a multiple trait-based approach. Our main findings confirmed that the impact of the two combined stressors can be implicated in alterations of ecosystem functions as result of the changes in proportions of biological traits. Overall, our results showed that, individually, flow velocity reduction and a severe oxygen depletion promoted a shift in community traits. In more detail, biological traits describing the dispersal of organisms and their respiration showed the strongest responses. The respiration mode responded to low flow with drift increase of gill breathers and decrease of individuals with tegument, whereas dispersal was clearly affected by the combination of stressors. Resistance through eggs was higher with the single effect of flow reduction, while swimmers´ relative abundance increased in individuals that drift after exposure to the combination of stressors. Thus, while flow reduction alone is expected to specifically filter out the gill breathers and the egg producers, the combination of stressors will impact more drastically organism's dispersal and swimmers. Such changes in biological traits can result in variations in ecosystem functioning through, for example, local changes in biomass, secondary production, stream metabolism as well as resulting in biodiversity losses or alterations of its distribution patterns.
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Affiliation(s)
- A R Calapez
- LEAF - Linking Landscape, Environment, Agriculture and Food, School of Agriculture, University of Lisbon, Lisbon, Portugal; MARE - Marine and Environmental Sciences Centre, Faculty of Sciences and Technology, Department of Life Sciences, University of Coimbra, Coimbra, Portugal.
| | - S R Q Serra
- MARE - Marine and Environmental Sciences Centre, Faculty of Sciences and Technology, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | - J M Santos
- CEF - Forest Research Centre, School of Agriculture, University of Lisbon, Lisbon, Portugal
| | - P Branco
- CEF - Forest Research Centre, School of Agriculture, University of Lisbon, Lisbon, Portugal; CERIS - Civil Engineering for Research and Innovation for Sustainability, Instituto Superior Técnico, University of Lisbon, Lisbon, Portugal
| | - T Ferreira
- CEF - Forest Research Centre, School of Agriculture, University of Lisbon, Lisbon, Portugal
| | - T Hein
- Institute of Hydrobiology and Aquatic Ecosystem Management, Department of Water, Atmosphere and Environment, University of Natural Resources and Life Sciences, Vienna, Austria
| | - A G Brito
- LEAF - Linking Landscape, Environment, Agriculture and Food, School of Agriculture, University of Lisbon, Lisbon, Portugal
| | - M J Feio
- MARE - Marine and Environmental Sciences Centre, Faculty of Sciences and Technology, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
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16
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Berger E, Haase P, Schäfer RB, Sundermann A. Towards stressor-specific macroinvertebrate indices: Which traits and taxonomic groups are associated with vulnerable and tolerant taxa? THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 619-620:144-154. [PMID: 29145051 DOI: 10.1016/j.scitotenv.2017.11.022] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 11/02/2017] [Accepted: 11/02/2017] [Indexed: 06/07/2023]
Abstract
Monitoring of macroinvertebrate communities is frequently used to define the ecological health status of rivers. Ideally, biomonitoring should also give an indication on the major stressors acting on the macroinvertebrate communities supporting the selection of appropriate management measures. However, most indices are affected by more than one stressor. Biological traits (e.g. size, generation time, reproduction) could potentially lead to more stressor-specific indices. However, such an approach has rarely been tested. In this study we classify 324 macroinvertebrate taxa as vulnerable (decreasing abundances) or tolerant (increasing abundances) along 21 environmental gradients (i.e. nutrients, major ions, oxygen and micropollutants) from 422 monitoring sites in Germany using Threshold Indicator Taxa Analysis (TITAN). Subsequently, we investigate which biological traits and taxonomic groups are associated with taxa classified as vulnerable or tolerant with regard to specific gradients. The response of most taxa towards different gradients was similar and especially high for correlated gradients. Traits associated with vulnerable taxa across most gradients included: larval aquatic life stages, isolated cemented eggs, reproductive cycle per year <1, scrapers, aerial and aquatic active dispersal and plastron respiration. Traits associated with tolerant taxa included: adult aquatic life stages, polyvoltinism, ovoviviparity or egg clutches in vegetation, food preference for dead animals or living microinvertebrates, substrate preference for macrophytes, microphytes, silt or mud and a body size >2-4cm. Our results question whether stressor-specific indices based on macroinvertebrate assemblages can be achieved using single traits, because we observed that similar taxa responded to different gradients and also similar traits were associated with vulnerable and tolerant taxa across a variety of water quality gradients. Future studies should examine whether combinations of traits focusing on specific taxonomic groups achieve higher stressor specificity.
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Affiliation(s)
- Elisabeth Berger
- Senckenberg Research Institute and Natural History Museum Frankfurt, Department of River Ecology and Conservation, Gelnhausen, Germany; Goethe University Frankfurt am Main, Faculty of Biological Sciences, Department Aquatic Ecotoxicology, Frankfurt am Main, Germany; University Koblenz-Landau, Institute for Environmental Sciences, Department of Quantitative Landscape Ecology, Landau, Germany.
| | - Peter Haase
- Senckenberg Research Institute and Natural History Museum Frankfurt, Department of River Ecology and Conservation, Gelnhausen, Germany; University of Duisburg-Essen, Faculty of Biology, Department of River and Floodplain Ecology, Essen, Germany
| | - Ralf B Schäfer
- University Koblenz-Landau, Institute for Environmental Sciences, Department of Quantitative Landscape Ecology, Landau, Germany
| | - Andrea Sundermann
- Senckenberg Research Institute and Natural History Museum Frankfurt, Department of River Ecology and Conservation, Gelnhausen, Germany; Goethe University Frankfurt am Main, Faculty of Biological Sciences, Department Aquatic Ecotoxicology, Frankfurt am Main, Germany
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17
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Brogna D, Dufrêne M, Michez A, Latli A, Jacobs S, Vincke C, Dendoncker N. Forest cover correlates with good biological water quality. Insights from a regional study (Wallonia, Belgium). JOURNAL OF ENVIRONMENTAL MANAGEMENT 2018; 211:9-21. [PMID: 29408087 DOI: 10.1016/j.jenvman.2018.01.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Revised: 12/05/2017] [Accepted: 01/04/2018] [Indexed: 06/07/2023]
Abstract
Forested catchments are generally assumed to provide higher quality water in opposition to agricultural and urban catchments. However, this should be tested in various ecological contexts and through the study of multiple variables describing water quality. Indeed, interactions between ecological variables, multiple land use and land cover (LULC) types, and water quality variables render the relationship between forest cover and water quality highly complex. Furthermore, the question of the scale at which land use within stream catchments most influences stream water quality and ecosystem health remains only partially answered. This paper quantifies, at the regional scale and across five natural ecoregions of Wallonia (Belgium), the forest cover effect on biological water quality indices (based on diatoms and macroinvertebrates) at the riparian and catchment scales. Main results show that forest cover - considered alone - explains around one third of the biological water quality at the regional scale and from 15 to 70% depending on the ecoregion studied. Forest cover is systematically positively correlated with higher biological water quality. When removing spatial, local morphological variations, or population density effect, forest cover still accounts for over 10% of the total biological water quality variation. Partitioning variance shows that physico-chemical water quality is one of the main drivers of biological water quality and that anthropogenic pressures often explain an important part of it (shared or not with forest cover). The proportion of forest cover in each catchment at the regional scale and across all ecoregions but the Loam region is more positively correlated with high water quality than when considering the proportion of forest cover in the riparian zones only. This suggests that catchment-wide impacts and a fortiori catchment-wide protection measures are the main drivers of river ecological water quality. However, distinctive results from the agricultural and highly human impacted Loam region show that riparian forests are positively linked to water quality and should therefore be preserved.
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Affiliation(s)
- D Brogna
- University of Namur, Department of Geography, 61 Rue de Bruxelles, 5000 Namur, Belgium.
| | - M Dufrêne
- University of Liège, Gembloux Agro-Bio Tech, UR TERRA, Biodiversity and Landscape Group, 2 Passage des Déportés, 5030 Gembloux, Belgium.
| | - A Michez
- University of Liege, Gembloux Agro-Bio Tech, Biosystem Engineering Research Unit, 2 Passage des Déportés, 5030 Gembloux, Belgium.
| | - A Latli
- University of Namur, Research Unit in Environmental and Evolutionary Ecology, 61 Rue de Bruxelles, 5000 Namur, Belgium.
| | - S Jacobs
- Research Group Nature & Society, Research Institute of Nature and Forest INBO, Kliniekstraat 25, 1070 Brussels, Belgium; Belgian Biodiversity Platform BBPF, Avenue Louise 231 Louizalaan, 1050 Brussels, Belgium.
| | - C Vincke
- Université Catholique de Louvain, Faculty of Bioscience Engineering & Earth and Life Institute, Belgium.
| | - N Dendoncker
- University of Namur, Department of Geography, 61 Rue de Bruxelles, 5000 Namur, Belgium.
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18
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Liao H, Sarver E, Krometis LAH. Interactive effects of water quality, physical habitat, and watershed anthropogenic activities on stream ecosystem health. WATER RESEARCH 2018; 130:69-78. [PMID: 29202343 DOI: 10.1016/j.watres.2017.11.065] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 11/22/2017] [Accepted: 11/29/2017] [Indexed: 06/07/2023]
Abstract
Ecological degradation of streams remains a major environmental concern worldwide. While stream restoration has received considerable attention, mitigation efforts focused on the improvement of physical habitat have not proven completely effective. Several small-scale studies have emphasized that effective restoration strategies require a more holistic understanding of the variables at play, although the generalization of the findings based on the small-scale studies remains unclear. Using a comprehensive statewide stream monitoring database from West Virginia (WV), a detailed landscape dataset, and a machine learning algorithm, this study explores the interactive impacts of water quality and physical habitat on stream ecosystem health as indicated by benthic macroinvertebrate scores. Given the long history of energy extraction in this region (i.e., coal mining and oil/gas production), investigation of energy extraction influences is highlighted. Our results demonstrate that a combination of good habitat and low specific conductance is generally associated with favorable benthic macroinvertebrate scores, whereas poor habitat combined with water quality conditions typically indicative of high ionic strength are associated with impaired stream status. In addition, streams impacted by both energy extraction and residential development had a higher percentage of impairment compared to those impacted predominantly by energy extraction or residential development alone. While water quality played a more important role in the ecosystem health of streams impacted primarily by energy extraction activities, habitat seems to be more influential in streams impacted by residential development. Together, these findings emphasize that stream restoration strategies should consider interactive effects of multiple environmental stressors tailored to specific sites or site types - as opposed to considering a single stressor or multiple stressors separately.
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Affiliation(s)
- Hehuan Liao
- Department of Biological Systems Engineering, Virginia Tech, Blacksburg, VA 24061, United States; Department of Mining and Minerals Engineering, Virginia Tech, Blacksburg, VA 24061, United States; School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China; College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China.
| | - Emily Sarver
- Department of Mining and Minerals Engineering, Virginia Tech, Blacksburg, VA 24061, United States
| | - Leigh-Anne H Krometis
- Department of Biological Systems Engineering, Virginia Tech, Blacksburg, VA 24061, United States
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19
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Latli A, Descy JP, Mondy CP, Floury M, Viroux L, Otjacques W, Marescaux J, Depiereux E, Ovidio M, Usseglio-Polatera P, Kestemont P. Long-term trends in trait structure of riverine communities facing predation risk increase and trophic resource decline. ECOLOGICAL APPLICATIONS : A PUBLICATION OF THE ECOLOGICAL SOCIETY OF AMERICA 2017; 27:2458-2474. [PMID: 28873278 DOI: 10.1002/eap.1621] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 06/26/2017] [Accepted: 07/20/2017] [Indexed: 06/07/2023]
Abstract
Many large European rivers have undergone multiple pressures that have strongly impaired ecosystem functioning at different spatial and temporal scales. Global warming and other environmental changes have favored the success of invasive species, deeply modifying the structure of aquatic communities in large rivers. Some exogenous species could alter trophic interactions within assemblages by increasing the predation risk for potential prey species (top-down effect) and limiting the dynamics of others via resource availability limitation (bottom-up effect). Furthermore, large transboundary rivers are complex aquatic ecosystems that have often been poorly investigated so that data for assessing long-term ecological trends are missing. In this study, we propose an original approach for investigating long-term combined effects of global warming, trophic resource decrease, predation risk, and water quality variations on the trait-based structure of macroinvertebrate and fish assemblages over 26 yr (1985-2011) and 427-km stretch of the river Meuse (France and Belgium). The study of temporal variations in biological, physiological, and ecological traits of macroinvertebrate and fish allowed identifying community trends and distinguishing impacts of environmental perturbations from those induced by biological alterations. We provide evidence, for this large European river, of an increase in water temperature (close to 1°C) and a decrease in phytoplankton biomass (-85%), as well as independent effects of these changes on both invertebrate and fish communities. The reduction of trophic resources in the water column by invasive molluscs has dramatically affected the density of omnivorous fish in favor of invertebrate feeders, while scrapers became the major feeding guild among invertebrates. Macroinvertebrate and fish communities have shifted from large-sized organisms with low fecundity to prolific, small-sized organisms, with early maturity, as a response to increased predation pressure.
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Affiliation(s)
- Adrien Latli
- Research Unit in Environmental and Evolutionary Ecology, University of Namur, rue de Bruxelles 61, B-5000, Namur, Belgium
| | - Jean-Pierre Descy
- Research Unit in Environmental and Evolutionary Ecology, University of Namur, rue de Bruxelles 61, B-5000, Namur, Belgium
| | - Cédric P Mondy
- Biodiversity and Plasticity in Hydrosystems, CNRS UMR 5023 LEHNA, University Lyon 1, Bât Forel, 69622, Villeurbanne Cedex, France
| | - Mathieu Floury
- Aquatic Environments, Ecology and Pollution, UR MALY, Irstea, 5 rue de la Doua, 70077, 69626, Villeurbanne, France
| | - Laurent Viroux
- Research Unit in Environmental and Evolutionary Ecology, University of Namur, rue de Bruxelles 61, B-5000, Namur, Belgium
| | - William Otjacques
- Research Unit in Environmental and Evolutionary Ecology, University of Namur, rue de Bruxelles 61, B-5000, Namur, Belgium
| | - Jonathan Marescaux
- Research Unit in Environmental and Evolutionary Ecology, University of Namur, rue de Bruxelles 61, B-5000, Namur, Belgium
| | - Eric Depiereux
- Research Unit in Environmental and Evolutionary Ecology, University of Namur, rue de Bruxelles 61, B-5000, Namur, Belgium
| | - Michael Ovidio
- Laboratory of Fish Demography and Hydroecology, University of Liège, Belgium
| | - Philippe Usseglio-Polatera
- Interdisciplinary Laboratory for Continental Environments, CNRS UMR 7360 LIEC, University of Lorraine, Campus Bridoux, 57070, Metz, France
| | - Patrick Kestemont
- Research Unit in Environmental and Evolutionary Ecology, University of Namur, rue de Bruxelles 61, B-5000, Namur, Belgium
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Kuzmanovic M, Dolédec S, de Castro-Catala N, Ginebreda A, Sabater S, Muñoz I, Barceló D. Environmental stressors as a driver of the trait composition of benthic macroinvertebrate assemblages in polluted Iberian rivers. ENVIRONMENTAL RESEARCH 2017; 156:485-493. [PMID: 28415043 DOI: 10.1016/j.envres.2017.03.054] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Revised: 03/18/2017] [Accepted: 03/29/2017] [Indexed: 06/07/2023]
Abstract
We used the trait composition of macroinvertebrate communities to identify the effects of pesticides and multiple stressors associated with urban land use at different sites of four rivers in Spain. Several physical and chemical stressors (high metal pollution, nutrients, elevated temperature and flow alterations) affected the urban sites. The occurrence of multiple stressors influenced aquatic assemblages at 50% of the sites. We hypothesized that the trait composition of macroinvertebrate assemblages would reflect the strategies that the assemblages used to cope with the respective environmental stressors. We used RLQ and fourth corner analysis to address the relationship between stressors and the trait composition of benthic macroinvertebrates. We found a statistically significant relationship between the trait composition and the exposure of assemblages to environmental stressors. The first RLQ dimension, which explained most of the variability, clearly separated sites according to the stressors. Urban-related stressors selected taxa that were mainly plurivoltine and fed on deposits. In contrast, pesticide impacted sites selected taxa with high levels of egg protection (better egg survival), indicating a potentially higher risk for egg mortality. Moreover, the trait diversity of assemblages at urban sites was low compared to that observed in pesticide impacted sites, suggesting the homogenization of assemblages in urban areas.
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Affiliation(s)
- Maja Kuzmanovic
- Department of Environmental Chemistry, IDAEA-CSIC, C/Jordi Girona 18-26, 08034 Barcelona, Spain; Catalan Institute for Water Research (ICRA), Parc Científic i Tecnològic de la Universitat de Girona, C/Emili Grahit, 101 Edifici H2O, 17003 Girona, Spain.
| | - Sylvain Dolédec
- UMR 5023, LEHNA, Biodiversité et Plasticité dans les Hydrosystèmes, Université Lyon 1, 69100 Villeurbanne, France
| | - Nuria de Castro-Catala
- Department of Ecology, Universitat de Barcelona, Av. Diagonal, 643, 08028 Barcelona, Spain
| | - Antoni Ginebreda
- Department of Environmental Chemistry, IDAEA-CSIC, C/Jordi Girona 18-26, 08034 Barcelona, Spain
| | - Sergi Sabater
- Catalan Institute for Water Research (ICRA), Parc Científic i Tecnològic de la Universitat de Girona, C/Emili Grahit, 101 Edifici H2O, 17003 Girona, Spain; GRECO, Institut d'Ecologia Aquàtica, Universitat de Girona, Facultat de Ciències, Campus Montilivi, 17003 Girona, Spain
| | - Isabel Muñoz
- Department of Ecology, Universitat de Barcelona, Av. Diagonal, 643, 08028 Barcelona, Spain
| | - Damià Barceló
- Department of Environmental Chemistry, IDAEA-CSIC, C/Jordi Girona 18-26, 08034 Barcelona, Spain; Catalan Institute for Water Research (ICRA), Parc Científic i Tecnològic de la Universitat de Girona, C/Emili Grahit, 101 Edifici H2O, 17003 Girona, Spain
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Floury M, Usseglio-Polatera P, Delattre C, Souchon Y. Assessing long-term effects of multiple, potentially confounded drivers in ecosystems from species traits. GLOBAL CHANGE BIOLOGY 2017; 23:2297-2307. [PMID: 27873443 DOI: 10.1111/gcb.13575] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Accepted: 10/18/2016] [Indexed: 06/06/2023]
Abstract
Although species traits have the potential to disentangle long-term effects of multiple, potentially confounded drivers in ecosystems, this issue has received very little attention in the literature. We aimed at filling this gap by assessing the relative effects of hydroclimatic and water quality factors on the trait composition of invertebrate assemblages over 30 years in the Middle Loire River (France). Using a priori predictions on the long-term variation of trait-based adaptations over the three decades, we evaluated the ability of invertebrate traits to indicate the effects of warming, discharge reduction and water quality improvement. Hydroclimatic and water quality factors contributed to up to 65% of the variation in trait composition. More than 70% of the initial trait response predictions made according to observed long-term hydroclimatic changes were confirmed. They supported a general climate-induced trend involving adapted resistance and resilience strategies. A partial confounding effect of water quality improvement acting on trophic processes was also highlighted, indicating that improved water quality management can significantly help to reduce some adverse effects of climate change. This trait-based approach can have wider implications for investigating long-term changes driven by multiple, potentially confounded factors, as frequently encountered in the context of global change.
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Affiliation(s)
- Mathieu Floury
- Irstea, UR MALY, Milieux Aquatiques, Ecologie et Pollutions, 5 rue de la Doua, 69626, Villeurbanne, CS70077, France
| | - Philippe Usseglio-Polatera
- CNRS UMR 7360, Laboratoire Interdisciplinaire des Environnements Continentaux, Université de Lorraine, Campus Bridoux, Rue du Général Delestraint, 57070, Metz, France
| | - Cecile Delattre
- EDF R&D, Laboratoire National Hydraulique et Environnement, 6 Quai Watier, BP 49, 78401, Chatou, France
| | - Yves Souchon
- Irstea, UR MALY, Milieux Aquatiques, Ecologie et Pollutions, 5 rue de la Doua, 69626, Villeurbanne, CS70077, France
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Larras F, Coulaud R, Gautreau E, Billoir E, Rosebery J, Usseglio-Polatera P. Assessing anthropogenic pressures on streams: A random forest approach based on benthic diatom communities. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 586:1101-1112. [PMID: 28222924 DOI: 10.1016/j.scitotenv.2017.02.096] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Revised: 01/12/2017] [Accepted: 02/10/2017] [Indexed: 05/10/2023]
Abstract
Benthic diatoms have been widely used to assess the ecological status of freshwater ecosystems, especially in the context of recent international water framework directive policies (e.g. the WFD). Despite diatom-based indices are known to respond fastly to water quality degradation, they are not designed to precisely identify the nature of pressures co-occurring in the environment. Based on large scale monitoring data, we aimed at building models able to estimate the risk of stream impairment by many types of anthropogenic pressures from taxonomy-based and trait-based characteristics of diatom assemblages. Random forest models were built to individually evaluate the impairment risk of diatom assemblages for six chemical and five hydromorphological or land-use related pressure categories. Eight models provided good impairment risk assessment (Area Under the Curve≥0.70). Under multi-pressure scenarios, models built for chemical pressures exhibited a better accuracy than hydromorphological or land-use related ones. Models were able to detect both ecological restoration and degradation, based on long-term surveys. These models have been implemented in a R user-friendly routine, to help stream managers to early identify degrading processes and prioritize management actions.
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Affiliation(s)
- Floriane Larras
- Interdisciplinary Laboratory of Continental Environments (LIEC), CNRS UMR 7360, University of Lorraine, 57070 Metz, France; Department of Bioanalytical Ecotoxicology, UFZ Helmholtz-Centre for Environmental Research, Leipzig, Germany.
| | - Romain Coulaud
- Interdisciplinary Laboratory of Continental Environments (LIEC), CNRS UMR 7360, University of Lorraine, 57070 Metz, France; Laboratory of Ecotoxicology, UMR-I 02 SEBIO, Le Havre University, Normandy University, 76063 Le Havre, France
| | - Edwige Gautreau
- Interdisciplinary Laboratory of Continental Environments (LIEC), CNRS UMR 7360, University of Lorraine, 57070 Metz, France; Laboratory for Ecology of Natural and Anthropized Hydrosystems (LEHNA), CNRS UMR 5023, University Claude Bernard Lyon 1, 69622 Villeurbanne, France
| | - Elise Billoir
- Interdisciplinary Laboratory of Continental Environments (LIEC), CNRS UMR 7360, University of Lorraine, 57070 Metz, France
| | - Juliette Rosebery
- Aquatic Ecosystems and Global Changes Research Unit, IRSTEA, 33612 Cestas, France
| | - Philippe Usseglio-Polatera
- Interdisciplinary Laboratory of Continental Environments (LIEC), CNRS UMR 7360, University of Lorraine, 57070 Metz, France
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Mondy CP, Muñoz I, Dolédec S. Life-history strategies constrain invertebrate community tolerance to multiple stressors: A case study in the Ebro basin. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 572:196-206. [PMID: 27498381 DOI: 10.1016/j.scitotenv.2016.07.227] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Revised: 07/31/2016] [Accepted: 07/31/2016] [Indexed: 06/06/2023]
Abstract
CONTEXT Multiple stressors constitute a serious threat to aquatic ecosystems, particularly in the Mediterranean region where water scarcity is likely to interact with other anthropogenic stressors. Biological traits potentially allow the unravelling of the effects of multiple stressors. However, thus far, trait-based approaches have failed to fully deliver on their promise and still lack strong predictive power when multiple stressors are present. GOAL We aimed to quantify specific community tolerances against six anthropogenic stressors and investigate the responses of the underlying macroinvertebrate biological traits and their combinations. METHODS We built and calibrated boosted regression tree models to predict community tolerances using multiple biological traits with a priori hypotheses regarding their individual responses to specific stressors. We analysed the combinations of traits underlying community tolerance and the effect of trait association on this tolerance. RESULTS Our results validated the following three hypotheses: (i) the community tolerance models efficiently and robustly related trait combinations to stressor intensities and, to a lesser extent, to stressors related to the presence of dams and insecticides; (ii) the effects of traits on community tolerance not only depended on trait identity but also on the trait associations emerging at the community level from the co-occurrence of different traits in species; and (iii) the community tolerances and the underlying trait combinations were specific to the different stressors. CONCLUSION This study takes a further step towards predictive tools in community ecology that consider combinations and associations of traits as the basis of stressor tolerance. Additionally, the community tolerance concept has potential application to help stream managers in the decision process regarding management options.
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Affiliation(s)
- Cédric P Mondy
- UMR 5023, LEHNA, Biodiversité et Plasticité dans les Hydrosystèmes, Université Lyon 1, Villeurbanne, France.
| | - Isabel Muñoz
- Department of Ecology, Universitat de Barcelona, Barcelona, Spain
| | - Sylvain Dolédec
- UMR 5023, LEHNA, Biodiversité et Plasticité dans les Hydrosystèmes, Université Lyon 1, Villeurbanne, France
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Mbaka JG, Szöcs E, Schäfer RB. Meta-analysis on the responses of traits of different taxonomic groups to global and local stressors. ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY 2015. [DOI: 10.1016/j.actao.2015.09.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Reyjol Y, Argillier C, Bonne W, Borja A, Buijse AD, Cardoso AC, Daufresne M, Kernan M, Ferreira MT, Poikane S, Prat N, Solheim AL, Stroffek S, Usseglio-Polatera P, Villeneuve B, van de Bund W. Assessing the ecological status in the context of the European Water Framework Directive: where do we go now? THE SCIENCE OF THE TOTAL ENVIRONMENT 2014; 497-498:332-344. [PMID: 25146904 DOI: 10.1016/j.scitotenv.2014.07.119] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2014] [Revised: 07/30/2014] [Accepted: 07/30/2014] [Indexed: 05/14/2023]
Abstract
The Water Framework Directive (WFD) is now well established as the key management imperative in river basins across Europe. However, there remain significant concerns with the way WFD is implemented and there is now a need for water managers and scientists to communicate better in order to find solutions to these concerns. To address this, a Science-Policy Interface (SPI) activity was launched in 2010 led by Directorate-General for Research and Innovation and Onema (the French national agency for water and aquatic ecosystems), which provided an interactive forum to connect scientists and WFD end-users. One major aim of the SPI activity was to establish a list of the most crucial research and development needs for enhancing WFD implementation. This paper synthesises the recommendations from this event highlighting 10 priority issues relating to ecological status. For lakes, temporary streams and transitional and coastal waters, WFD implementation still suffers from a lack of WFD-compliant bioassessment methods. For rivers, special attention is required to assess the ecological impacts of hydromorphological alterations on biological communities, notably those affecting river continuity and riparian covering. Spatial extrapolation tools are needed in order to evaluate ecological status for water bodies for which no data are available. The need for more functional bioassessment tools as complements to usual WFD-compliant tools, and to connect clearly good ecological state, biodiversity and ecosystem services when implementing WFD were also identified as crucial issues.
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Affiliation(s)
- Yorick Reyjol
- Onema (Office National de l'Eau et des Milieux Aquatiques), Direction de l'Action Scientifique et Technique (DAST), 5 square Felix Nadar, 94300 Vincennes, France.
| | - Christine Argillier
- Irstea, UR HYAX, Pôle d'études et recherches en Hydroécologie des plans d'eau Onema/Irstea, 3275 route de Cézanne, CS 40061, 13182 Aix-en-Provence Cedex 5, France
| | - Wendy Bonne
- European Commission, DG Joint Research Centre, Water Resources Unit, via E. Fermi 2749, T.P. 460, I-21027 Ispra, VA, Italy
| | - Angel Borja
- AZTI-Tecnalia, Marine Research Division, Herrera Kaia, Portualdea s/n, 20110 Pasaia, Spain
| | - Anthonie D Buijse
- DELTARES, Department of Freshwater Ecology and Water Quality, P.O. Box 177, 2600 MH Delft, The Netherlands
| | - Ana Cristina Cardoso
- European Commission, DG Joint Research Centre, Water Resources Unit, via E. Fermi 2749, T.P. 460, I-21027 Ispra, VA, Italy
| | - Martin Daufresne
- Irstea, UR HYAX, Pôle d'études et recherches en Hydroécologie des plans d'eau Onema/Irstea, 3275 route de Cézanne, CS 40061, 13182 Aix-en-Provence Cedex 5, France
| | - Martin Kernan
- Department of Geography, University College London, Gower Street, London WC1E 6BT, UK
| | - Maria Teresa Ferreira
- Department of Natural Resources, Environment and Landscape, Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal
| | - Sandra Poikane
- European Commission, DG Joint Research Centre, Water Resources Unit, via E. Fermi 2749, T.P. 460, I-21027 Ispra, VA, Italy
| | - Narcís Prat
- Grup de Recerca F.E.M. (Freshwater Ecology and Management), Dept. Ecologia, Universitat de Barcelona, Spain
| | - Anne-Lyche Solheim
- Norwegian Institute for Water Research (NIVA), Gaustadalleen 21, 0349 Oslo, Norway
| | - Stéphane Stroffek
- Agence de l'eau Rhône, Méditerranée Corse, 2-4 allée de Lodz, 69363 Lyon, France
| | - Philippe Usseglio-Polatera
- Université de Lorraine, Laboratoire Interdisciplinaire des Environnements Continentaux (LIEC), CNRS UMR 7360, rue du Général Delestraint, 57070 Metz, France
| | - Bertrand Villeneuve
- UR MALY, Pôle d'études et recherches en Hydroécologie des cours d'eau, Irstea centre de Lyon-Villeurbanne, 5 rue de la Doua, CS70077, 69626 Villeurbanne Cedex, France
| | - Wouter van de Bund
- European Commission, DG Joint Research Centre, Water Resources Unit, via E. Fermi 2749, T.P. 460, I-21027 Ispra, VA, Italy
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Organic chemicals jeopardize the health of freshwater ecosystems on the continental scale. Proc Natl Acad Sci U S A 2014; 111:9549-54. [PMID: 24979762 DOI: 10.1073/pnas.1321082111] [Citation(s) in RCA: 436] [Impact Index Per Article: 43.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Organic chemicals can contribute to local and regional losses of freshwater biodiversity and ecosystem services. However, their overall relevance regarding larger spatial scales remains unknown. Here, we present, to our knowledge, the first risk assessment of organic chemicals on the continental scale comprising 4,000 European monitoring sites. Organic chemicals were likely to exert acute lethal and chronic long-term effects on sensitive fish, invertebrate, or algae species in 14% and 42% of the sites, respectively. Of the 223 chemicals monitored, pesticides, tributyltin, polycyclic aromatic hydrocarbons, and brominated flame retardants were the major contributors to the chemical risk. Their presence was related to agricultural and urban areas in the upstream catchment. The risk of potential acute lethal and chronic long-term effects increased with the number of ecotoxicologically relevant chemicals analyzed at each site. As most monitoring programs considered in this study only included a subset of these chemicals, our assessment likely underestimates the actual risk. Increasing chemical risk was associated with deterioration in the quality status of fish and invertebrate communities. Our results clearly indicate that chemical pollution is a large-scale environmental problem and requires far-reaching, holistic mitigation measures to preserve and restore ecosystem health.
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