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Dorleon G, Rigaud S, Techer I. Management of dredged marine sediments in Southern France: main keys to large-scale beneficial re-use. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024:10.1007/s11356-024-33129-9. [PMID: 38616226 DOI: 10.1007/s11356-024-33129-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 03/25/2024] [Indexed: 04/16/2024]
Abstract
Fifty million cubic meters of marine sediments are dredged each year in France in order to maintain harbor activities and sustain the economy of littoral territories. Because of anthropogenic activities in and around harbors, sediments can contain significant amounts of chemical and organic pollutants whose behavior during dredging must be addressed in order to avoid releasing risks for humans and the environment. French regulations come to govern the management of dredged sediments, considering them "safe" and possible to be dumped at sea or "contaminated" and needed to be treated on land as waste. In recent years, new constraints have been pushed toward the management of land. This management is, however, challenging as few channels are proposed to reuse marine sediments, and elimination appears to be economically and environmentally unsustainable. This study provides an overview of the technical and regulatory aspects related to dredged marine sediment management in France and aims to identify and discuss the limits of their valorization. Dredged sediments are mainly composed of particles with heterogeneous grain size, some being known for many applications such as building materials and growing media. However, several reasons have been put forward to explain why these particles are not reused when extracted from dredged sediments. Several technical, socio-economic, and regulatory obstacles explain the low demand for dredged sediments. This demand can be stimulated by government incentives and a good regulatory framework. National regulations could help streamline their reuse by removing their "waste" status and creating a regulated market for dredged sediment.
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Affiliation(s)
- Garry Dorleon
- UPR 7352 CHROME, Laboratoire Géosciences de L'Environnement, Site Hoche - Université de Nîmes, 1 Place du Président Doumergue, 30000, Nîmes, France.
| | - Sylvain Rigaud
- UPR 7352 CHROME, Laboratoire Géosciences de L'Environnement, Site Hoche - Université de Nîmes, 1 Place du Président Doumergue, 30000, Nîmes, France
| | - Isabelle Techer
- UPR 7352 CHROME, Laboratoire Géosciences de L'Environnement, Site Hoche - Université de Nîmes, 1 Place du Président Doumergue, 30000, Nîmes, France
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Yan J, Li F. Effects of sediment dredging on freshwater system: a comprehensive review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:119612-119626. [PMID: 37962757 DOI: 10.1007/s11356-023-30851-8] [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: 05/17/2023] [Accepted: 10/30/2023] [Indexed: 11/15/2023]
Abstract
As a common geo-engineering method to control internal load of nutrients and pollutants, sediment dredging has been used in many freshwater basins and has achieved certain effects. However, dredging can disturb water bodies and substrates and cause secondary pollution. It negatively affects the water environment system mainly from the following aspects. Dredging suddenly changes the hydrological conditions and many physical indicators of the water body, which will cause variations in water physicochemical properties. For example, changes in pH, dissolved oxygen, redox potential, transparency, and temperature can lead to a series of aquatic biological responses. On the other hand, sediment resuspension and deep-layer sediment exposure can affect the cycling of nutrients (e.g., nitrogen, phosphorus), the release and valence conversion of heavy metals, and the desorption and degradation of organic pollutants in the overlying water. This can further affect the community structure of aquatic organisms. The aim of this paper is to analyze the relevant literature on freshwater sediment dredging, and to summarize the current knowledge of the potential environmental risks caused by the dredging and utilization of freshwater sediments. Based on this, the paper attempts to propose suggestions to mitigate these adverse environmental impacts. These are significant contributions to the development of environmentally friendly freshwater sediment dredging technologies.
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Affiliation(s)
- Jiale Yan
- College of Economics and Management, Shandong Agricultural University, Tai'an, 271018, People's Republic of China
- Irvine Valley College, Irvine, CA, 92612, USA
| | - Fang Li
- College of Economics and Management, Shandong Agricultural University, Tai'an, 271018, People's Republic of China.
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Altieri P, Paz LE, Jensen RF, Donadelli J, Capítulo AR. Transplanting macrophytes as a rehabilitation technique for lowland streams and their influence on macroinvertebrate assemblages. AN ACAD BRAS CIENC 2021; 93:e20191029. [PMID: 34231754 DOI: 10.1590/0001-3765202120191029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Accepted: 04/13/2020] [Indexed: 11/22/2022] Open
Abstract
Lowland streams are usually affected by river engineering works that produce the loss of habitat heterogeneity. Our aim was to assess the transplantation of macrophytes with different complexity into a lowland stream which was dredged and widened. Stuckenia pectinata and Hydrocleys nymphoides were collected at an extraction site and installed at a transplant site. The growth and coverage of macrophytes beds were quantified. Taxonomic richness, Shannon-Wiener diversity, abundance, composition and proportion of functional feeding groups of the macroinvertebrate assemblage presented in macrophyte beds were assessed between sites and species. The growth of both macrophytes did not differ significantly between sites and the coverage of transplanted beds increased, therefore they established at the transplant site within a short period. Regarding to macroinvertebrate assemblage, only the functional feeding groups did not show differences between sites. Moreover, the proportion of predators presented differences between macrophytes at the same site, with H. nymphoides having a higher proportion. Our study showed that this technique is suitable for reintroducing these species and is applicable in rehabilitation projects that promote the restoration of habitat heterogeneity deteriorated by river engineering works. Also, we highlight the importance of incorporate macroinvertebrate functional traits to assess the ecological status after rehabilitation.
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Affiliation(s)
- Paula Altieri
- Instituto de Limnología, Dr.-Raúl A. Ringuelet (ILPLA) (CONICET La Plata, UNLP) C.C 712-1900, La Plata, Argentina.,Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata. C.C 712-1900, La Plata, Argentina
| | - Laura E Paz
- Instituto de Limnología, Dr.-Raúl A. Ringuelet (ILPLA) (CONICET La Plata, UNLP) C.C 712-1900, La Plata, Argentina.,Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata. C.C 712-1900, La Plata, Argentina
| | - Roberto F Jensen
- Instituto de Limnología, Dr.-Raúl A. Ringuelet (ILPLA) (CONICET La Plata, UNLP) C.C 712-1900, La Plata, Argentina
| | - Jorge Donadelli
- Instituto de Limnología, Dr.-Raúl A. Ringuelet (ILPLA) (CONICET La Plata, UNLP) C.C 712-1900, La Plata, Argentina
| | - Alberto Rodrigues Capítulo
- Instituto de Limnología, Dr.-Raúl A. Ringuelet (ILPLA) (CONICET La Plata, UNLP) C.C 712-1900, La Plata, Argentina.,Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata. C.C 712-1900, La Plata, Argentina
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Graziano M, Giorgi A, Feijoó C. Multiple stressors and social-ecological traps in Pampean streams (Argentina): A conceptual model. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 765:142785. [PMID: 33097269 DOI: 10.1016/j.scitotenv.2020.142785] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 09/05/2020] [Accepted: 10/01/2020] [Indexed: 06/11/2023]
Abstract
Fluvial systems are particularly sensitive to changes in the terrestrial ecosystems where they are embedded, receiving simultaneously the impact of multiple stressors. The design of adequate management policies requires analyzing fluvial systems as social-ecological systems, because the decoupling of natural and social systems can lead to a severe mismatch between maintaining ecological integrity and the pursuit of human well-being. Pampean streams are especially prone to the impact of human activities because they are located in a region that provides almost half of the agricultural production of Argentina and concentrates 66% of the whole population of the country. In the present work, we conceived a general social-ecological framework that links the occurrence of multiple stressors and their impacts on ecosystem services, with changes in environmental perception of streams, which in turn feedback over institutional actions at the watershed's governance. We identified four current key drivers of the dynamics in Pampean streams: a dominant agro-industrial model for the region, a command-and-control governance regime mainly based on an engineering hydraulic perspective, the real estate market speculation of surrounding lands, and the persistence of structural poverty in urban areas. The resulting dynamics resembles the occurrence of different kinds of social-ecological traps, i.e., a highly stable but undesirable state of the system that is difficult to escape. Based on this analysis, we provide a leverage point perspective to avoid this trap. Together, this approach could be applied to other fluvial systems of the world to link the ecological and social domains to multiple stressors analysis, and to improve institutional fit for the sustainability of fluvial social-ecological systems.
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Affiliation(s)
- Martín Graziano
- Instituto de Ecología, Genética y Evolución de Buenos Aires (IEGEBA, CONICET-UBA), and Departamento de Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Adonis Giorgi
- INEDES (UNLu-CONICET) and Departamento de Ciencias Básicas, Universidad Nacional de Luján, Luján, Buenos Aires, Argentina
| | - Claudia Feijoó
- INEDES (UNLu-CONICET) and Departamento de Ciencias Básicas, Universidad Nacional de Luján, Luján, Buenos Aires, Argentina.
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Tudurí A, Becoña LP, Venturini N, Rodríguez-Gallego L, García-Rodríguez F, González L, Lescano C, Costa S, Del Puerto L, Bergamino L. Trophic assessment in South American Atlantic coastal lagoons: Linking water, sediment and diatom indicators. MARINE POLLUTION BULLETIN 2021; 165:112119. [PMID: 33582420 DOI: 10.1016/j.marpolbul.2021.112119] [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: 09/05/2020] [Revised: 01/24/2021] [Accepted: 01/29/2021] [Indexed: 06/12/2023]
Abstract
Within two coastal shallow lagoons, trophic state was assessed by integrating water and sediment chemical indicators such as the TRIX and the benthic biopolymeric carbon (BPC) trophic indicator, altogether with biological environmental indicators (diatom species characterization). Spatial and temporal behavior of TRIX and BPC indices suggest that water column trophic indicators reflect rather short-term variations in water quality changes, while benthic trophic indicators rather reflect consistent long-term trends which make them useful as enduring indicators of eutrophication. Canonical Correspondence Analysis (CCA) showed that both sediment and transitional water trophic state indices increased eutrophic conditions with a decreasing salinity and increasing total nutrients. Diatom species associated with elevated eutrophic condition such as Staurosirella martyi, Staurosira breviestriata, Amphora copulata, Amphora veneta, Nitzschia sp., and Bacillaria paradoxa, showed a positive correlation with both trophic indices. We highlight the need for considering sediment eutrophication indicators towards in monitoring programmes within shallow coastal lagoons.
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Affiliation(s)
- Adriana Tudurí
- Laboratorio de Geociencias, Centro Universitario Regional del Este (CURE), Universidad de la República, Rutas 9 y 15 s/n, Rocha, Uruguay; Laboratorio de Biogeoquímica Marina (LABIM), Oceanografía y Ecología Marina, Instituto de Ecología y Ciencias Ambientales, Facultad de Ciencias, Universidad de la República, Iguá 4225, Montevideo CP: 11200, Uruguay.
| | - Laura Perez Becoña
- Laboratorio de Geociencias, Centro Universitario Regional del Este (CURE), Universidad de la República, Rutas 9 y 15 s/n, Rocha, Uruguay
| | - Natalia Venturini
- Laboratorio de Biogeoquímica Marina (LABIM), Oceanografía y Ecología Marina, Instituto de Ecología y Ciencias Ambientales, Facultad de Ciencias, Universidad de la República, Iguá 4225, Montevideo CP: 11200, Uruguay
| | - Lorena Rodríguez-Gallego
- Departamento Interdisciplinario de Sistemas Costeros y Marinos, Centro Universitario Regional Este (CURE), Universidad de la República, Rutas 9 y 15 s/n, Rocha, Uruguay
| | - Felipe García-Rodríguez
- Laboratorio de Geociencias, Centro Universitario Regional del Este (CURE), Universidad de la República, Rutas 9 y 15 s/n, Rocha, Uruguay; Universidade Federal de Rio Grande, Instituto de Oceanografia, Programa de Pós-Graduação em Oceanología, Rio Grande, Brazil
| | - Leticia González
- Laboratorio de Geociencias, Centro Universitario Regional del Este (CURE), Universidad de la República, Rutas 9 y 15 s/n, Rocha, Uruguay
| | - Carolina Lescano
- Departamento Interdisciplinario de Sistemas Costeros y Marinos, Centro Universitario Regional Este (CURE), Universidad de la República, Rutas 9 y 15 s/n, Rocha, Uruguay
| | - Soledad Costa
- Departamento Interdisciplinario de Sistemas Costeros y Marinos, Centro Universitario Regional Este (CURE), Universidad de la República, Rutas 9 y 15 s/n, Rocha, Uruguay
| | - Laura Del Puerto
- Laboratorio de Geociencias, Centro Universitario Regional del Este (CURE), Universidad de la República, Rutas 9 y 15 s/n, Rocha, Uruguay
| | - Leandro Bergamino
- Laboratorio de Geociencias, Centro Universitario Regional del Este (CURE), Universidad de la República, Rutas 9 y 15 s/n, Rocha, Uruguay
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Bianchini A, Cento F, Guzzini A, Pellegrini M, Saccani C. Sediment management in coastal infrastructures: Techno-economic and environmental impact assessment of alternative technologies to dredging. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 248:109332. [PMID: 31394473 DOI: 10.1016/j.jenvman.2019.109332] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 07/14/2019] [Accepted: 07/29/2019] [Indexed: 06/10/2023]
Abstract
The presence of anthropic activity in the coastal or riverine environment modifies the wave as well as the water and sediment current regime. In particular, the body of water around ports is an area where intense currents and sediment transport rates are usually present and can be affected by low water velocities that take place close to the entrance and inside the port basin. Consequently, sediment can be entrained and accumulated in such areas, creating problems to navigation. Ports and moorings are filled with fine sediments due to deposition resulting from solid transport. In particular, silt particles settle because of the weak vertical and lateral shearing of the velocity field. The result is that harbours frequently require ordinary maintenance dredging. The dredging process involves the removal of sediment in its natural deposited condition by using either mechanical or hydraulic equipment. Dredging is a consolidated and proven technology, but involves considerable drawbacks. In particular, dredging has a notable environmental impact on marine flora and fauna, contributes to the mobility and diffusion of contaminants and pollutants already present in the silted sediments, obstructs navigation and is characterized by relatively high and low predictable costs. This paper aims to provide an original structured overview of technologies alternative to dredging that have been tested in the past 50 years. More than 150 articles have been analysed to compare standard dredging technologies with market-ready competitors from techno-economic and environmental perspectives. In particular, the paper focuses on anti-sedimentation infrastructures and on innovative plant solutions characterized by low maintenance costs and by a very limited environmental impact. The final aim of the paper is to describe the currently available technologies that prevent port inlet and channel siltation and to classify them through a techno-economic and environmental impact assessment. The comparison shows that dredging has both the higher costs and environmental impact, while fixed sand by-passing plants are characterized by the lowest environmental impact and operation costs that are competitive with dredging.
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Affiliation(s)
- A Bianchini
- Department of Industrial Engineering, University of Bologna, Via Fontanelle 40, 47100, Forli, Italy
| | - F Cento
- Department of Industrial Engineering, University of Bologna, Viale Risorgimento 2, 40100, Bologna, Italy
| | - A Guzzini
- Department of Industrial Engineering, University of Bologna, Viale Risorgimento 2, 40100, Bologna, Italy
| | - M Pellegrini
- Department of Industrial Engineering, University of Bologna, Via Fontanelle 40, 47100, Forli, Italy; Interdepartmental Industrial Research Centre on Building and Construction, Viale Risorgimento 2, 40100, Bologna, Italy.
| | - C Saccani
- Department of Industrial Engineering, University of Bologna, Viale Risorgimento 2, 40100, Bologna, Italy; Interdepartmental Industrial Research Centre on Building and Construction, Viale Risorgimento 2, 40100, Bologna, Italy
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Nsenga Kumwimba M, Meng F, Iseyemi O, Moore MT, Zhu B, Tao W, Liang TJ, Ilunga L. Removal of non-point source pollutants from domestic sewage and agricultural runoff by vegetated drainage ditches (VDDs): Design, mechanism, management strategies, and future directions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 639:742-759. [PMID: 29803045 DOI: 10.1016/j.scitotenv.2018.05.184] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2018] [Revised: 05/15/2018] [Accepted: 05/15/2018] [Indexed: 05/27/2023]
Abstract
Domestic wastewater and agricultural runoff are increasingly viewed as major threats to both aquatic and terrestrial ecosystems due to the introduction of non-point source inorganic (e.g., nitrogen, phosphorus and metals) and organic (e.g., pesticides and pharmaceutical residues) pollutants. With rapid economic growth and social change in rural regions, it is important to examine the treatment systems in rural and remote areas for high efficiency, low running costs, and minimal maintenance in order to minimize its influence on water bodies and biodiversity. Recently, the use of vegetated drainage ditches (VDDs) has been employed in treatment of domestic sewage and agricultural runoff, but information on the performance of VDDs for treating these pollutants with various new management practices is still not sufficiently summarized. This paper aims to outline and review current knowledge related to the use of VDDs in mitigating these pollutants from domestic sewage and agricultural runoff. Literature analysis has suggested that further research should be carried out to improve ditch characteristics and management strategies inside ditches in order to ensure their effectiveness. Firstly, the reported major ditch characteristics with the most effect on pollutant removal processes (e.g., plant species, weirs, biofilms, and substrates selection) were summarized. The second focus concerns the function of ditch characteristics in VDDs for pollutant removal and identification of possible removal mechanisms involved. Thirdly, we examined factors to consider for establishing appropriate management strategies within ditches and how these could influence the whole ditch design process. The current review promotes areas where future research is needed and highlights clear and sufficient evidence regarding performance and application of this overlooked ditch system to reduce pollutants.
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Affiliation(s)
- Mathieu Nsenga Kumwimba
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, PR China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou 510275, PR China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, 610041 Chengdu, PR China; Key Laboratory of Mountain Surface Processes and Ecological Regulation, Chinese Academy of Sciences, Chengdu, PR China; Faculty of Agronomy, Department of Natural Resources and Environmental Management, University of Lubumbashi, Congo; Département de géologie, Faculté des sciences, Lubumbashi, Congo.
| | - Fangang Meng
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, PR China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou 510275, PR China
| | - Oluwayinka Iseyemi
- Delta Water Management Research Unit, USDA Agricultural Research Service, Jonesboro, USA
| | - Matthew T Moore
- Water Quality and Ecology Research Unit, USDA Agricultural Research Service, National Sedimentation Laboratory, Oxford, MS 38655, USA
| | - Bo Zhu
- Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, 610041 Chengdu, PR China; Key Laboratory of Mountain Surface Processes and Ecological Regulation, Chinese Academy of Sciences, Chengdu, PR China
| | - Wang Tao
- Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, 610041 Chengdu, PR China; Key Laboratory of Mountain Surface Processes and Ecological Regulation, Chinese Academy of Sciences, Chengdu, PR China
| | - Tang Jia Liang
- Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, 610041 Chengdu, PR China; Key Laboratory of Mountain Surface Processes and Ecological Regulation, Chinese Academy of Sciences, Chengdu, PR China
| | - Lunda Ilunga
- Faculty of Agronomy, Department of Natural Resources and Environmental Management, University of Lubumbashi, Congo; Département de géologie, Faculté des sciences, Lubumbashi, Congo
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Mora D, Carmona J, Jahn R, Zimmermann J, Abarca N. Epilithic diatom communities of selected streams from the Lerma-Chapala Basin, Central Mexico, with the description of two new species. PHYTOKEYS 2017; 88:39-69. [PMID: 29118646 PMCID: PMC5672134 DOI: 10.3897/phytokeys.88.14612] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Accepted: 09/10/2017] [Indexed: 06/07/2023]
Abstract
The Lerma-Chapala Basin, in Central Mexico, is geologically heterogeneous, climatically diverse and boasts high biodiversity, lying within two Biodiversity Hotspots, namely Mesoamerica and the Madrean Pine-Oak Woodlands. Epilithon and water samples were collected in the basin from 14 sampling sites three times each, two sampling campaigns during the rainy season and one in the dry season. A total of 274 infrageneric taxa in 48 genera were recorded. The taxonomic composition observed was dominated by taxa from the genera Nitzschia, Gomphonema, Pinnularia, Navicula, Sellaphora and Eunotia. About a third of the taxa found could not be identified to the species level. From those unidentified morphodemes, two are described as new species, namely Brachysira altepetlensis and Sellaphora queretana. Furthermore, Eolimna rhombica is transferred to Sellaphora. Canonical Correspondence Analysis (CCA) revealed that specific conductivity and pH were the main environmental factors driving the community composition observed. Three groups of samples were identified after the CCA: 1) characterized by acidic waters and low conductivity; 2) with circumneutral waters, low specific conductivity and high temperature and phosphorous concentrations; and 3) characterized by circumneutral waters, high conductivity and low nitrogen concentrations. The indicator value method (IndVal), based on the relative abundance and relative frequency of the most abundant taxa was calculated based on the groups observed in the CCA, identifying the characteristic taxa for each of the three groups.
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Affiliation(s)
- Demetrio Mora
- Botanischer Garten und Botanisches Museum Berlin–Dahlem, Freie Universität Berlin, Königin–Luise–Straße 6–8, 14195 Berlin, Germany
| | - Javier Carmona
- Facultad de Ciencias, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, Coyoacán, 04510 México, D.F., México
| | - Regine Jahn
- Botanischer Garten und Botanisches Museum Berlin–Dahlem, Freie Universität Berlin, Königin–Luise–Straße 6–8, 14195 Berlin, Germany
| | - Jonas Zimmermann
- Botanischer Garten und Botanisches Museum Berlin–Dahlem, Freie Universität Berlin, Königin–Luise–Straße 6–8, 14195 Berlin, Germany
| | - Nélida Abarca
- Botanischer Garten und Botanisches Museum Berlin–Dahlem, Freie Universität Berlin, Königin–Luise–Straße 6–8, 14195 Berlin, Germany
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9
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Ma D, Zhang L, Fang Q, Jiang Y, Elliott M. The cumulative effects assessment of a coastal ecological restoration project in China: An integrated perspective. MARINE POLLUTION BULLETIN 2017; 118:254-260. [PMID: 28274474 DOI: 10.1016/j.marpolbul.2017.02.043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Revised: 02/13/2017] [Accepted: 02/15/2017] [Indexed: 06/06/2023]
Abstract
Large scale coastal land-claim and sea-enclosing (CLASE) activities have caused habitat destruction, biodiversity losses and water deterioration, thus the local governments in China have recently undertaken seabed dredging and dyke opening (SDADO) as typical ecological restoration projects. However, some projects focus on a single impact on hydrodynamic conditions, water quality or marine organisms. In a case study in Xiamen, China, an integrated effects assessment framework centres on ecohydrology, using modeling of hydrodynamic conditions and statistical analysis of water quality, was developed to assess the effects of ecological restoration projects. The benefits of SDADO projects include improving hydrodynamic conditions and water quality, as a precursor to further marine biological improvements. This study highlights the need to comprehensively consider ecological effects of SDADO projects in the planning stage, and an integrative assessment method combining cumulative effects of hydrodynamic conditions, water quality and biological factors.
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Affiliation(s)
- Deqiang Ma
- Coastal and Ocean Management Institute, Xiamen University, Xiamen 361102, China
| | - Liyu Zhang
- Xiamen Oceans and Fisheries Institute, Xiamen 361000, China
| | - Qinhua Fang
- Coastal and Ocean Management Institute, Xiamen University, Xiamen 361102, China; Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Xiamen University, Xiamen 361102, China.
| | - Yuwu Jiang
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China
| | - Michael Elliott
- Institute of Estuarine & Coastal Studies, University of Hull, Hull HU6 7RX, UK
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10
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Nsenga Kumwimba M, Zhu B, Wang T, Muyembe DK. Distribution and risk assessment of metals and arsenic contamination in man-made ditch sediments with different land use types. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:24808-24823. [PMID: 27658408 DOI: 10.1007/s11356-016-7690-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Accepted: 09/12/2016] [Indexed: 06/06/2023]
Abstract
Ditches are subjected to a large input of nutrients, trace metals, and arsenic and the enhancement of sedimentation due to human activities. However, the influence of different types of land uses on the distribution and associated environmental risk of metals and arsenic in the Red purple Sichuan Basin remains largely unclear, which is needed for water management. This study was carried out to characterize metal/metalloid status in ditch sediments from different land uses. A total of 68 surface sediment samples (0-5 cm) were collected from open ditches distributed in different land use types, i.e., cultivated ditches (CD), barren land ditches (BLD), roadside ditches (RSD), and residential ditches (RD), within the Sichuan Basin. Mean concentrations of Cr, Ni, Cu, Zn, Cd, Pb, and Mn in both RD and RSD were above the soil background values of Sichuan Basin, but Cd in ditch sediments of the basin posed considerable ecological risk to the environment. Overall, metals/metalloid (except Pb) decreased in the following order of RD > RSD > BLD > CD. Of the different land use types in the hilly region, residential and roadside land uses were likely to adverse effects on aquatic life. Multivariate statistical analysis showed that Mn, As, Cu, Ni, Zn, Fe, and Al were mainly influenced by natural weathering (erosion), while Pb might come from heavy vehicular traffic. The degree of contamination (Md), enrichment factor (EF), and the geo-accumulation index (Igeo) showed that Cd causes strong sediment pollution in the basin. Sediment quality guidelines SQG-Q values displayed that metals and arsenic created medium-low potential of adverse biological effects. These results provide baseline information on the metals and arsenic pollution in the Sichuan Basin. Awareness of land use type contributions to metals and arsenic requires that these man-made ditches be considered for their mitigation of pollutants in this region.
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Affiliation(s)
- Mathieu Nsenga Kumwimba
- Key Laboratory of Mountain Surface Processes and Ecological Regulation, Chinese Academy of Sciences, Chengdu, 610041, China
- Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, 610041, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Faculty of Agronomy, Department of Natural Resources and Environmental Management, University of Lubumbashi, PO Box 1825, Lubumbashi, Democratic Republic of Congo
| | - Bo Zhu
- Key Laboratory of Mountain Surface Processes and Ecological Regulation, Chinese Academy of Sciences, Chengdu, 610041, China.
- Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, 610041, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Tao Wang
- Key Laboratory of Mountain Surface Processes and Ecological Regulation, Chinese Academy of Sciences, Chengdu, 610041, China.
- Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, 610041, China.
| | - Diana Kavidia Muyembe
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, People's Republic of China
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Wasserman JC, Wasserman MAV, Barrocas PRG, Almeida AM. Predicting pollutant concentrations in the water column during dredging operations: Implications for sediment quality criteria. MARINE POLLUTION BULLETIN 2016; 108:24-32. [PMID: 27216043 DOI: 10.1016/j.marpolbul.2016.05.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Revised: 04/29/2016] [Accepted: 05/04/2016] [Indexed: 06/05/2023]
Abstract
The development of new dredging techniques that can reduce, or at least predict, the environmental impacts, is in high demand by governments in developing countries. In the present work, a new methodology was developed, to evaluate the level of metals contamination (i.e. cadmium, lead and zinc) of the water column, during a dredging operation. This methodology was used to evaluate the impacts of the construction of a new maritime terminal in Sepetiba Bay, Brazil. The methodology quantifies the amount of resuspended sediments and calculates the expected contaminants concentrations in the water column. The results indicated that sediment quality criteria were not compatible with water quality criteria, because the dredging of contaminated sediments does not necessarily yield contaminated water. It is suggested that the use of sediment quality criteria for dredging operations might be abandoned, and the methodology presented in this study applied to assess dredging's environmental impacts, predicting water contamination levels.
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Affiliation(s)
- Julio Cesar Wasserman
- Network of Environment and Sustainable Development (REMADS-UFF), University Federal Fluminense, Institute of Geosciences, office 406. Av Litorânea s/n Boa Viagem, Niterói. CEP 24030-346, Brazil.
| | - Maria Angélica V Wasserman
- Institute of Nuclear Engineering - CNEN, Rua Hélio de Almeida, 75, Cidade Universitária, Ilha do Fundão, Rio de Janeiro, RJ CEP 21941-906, Brazil.
| | - Paulo Rubens G Barrocas
- Department of Sanitation and Environmental Health, National School of Public Health, Oswaldo Cruz Foundation - FIOCRUZ, Rua Leopoldo Bulhões 1480/sala 521, Rio de Janeiro, RJ, Brazil.
| | - Aline Mansur Almeida
- Network of Environment and Sustainable Development (REMADS-UFF), University Federal Fluminense, Institute of Geosciences, office 406. Av Litorânea s/n Boa Viagem, Niterói. CEP 24030-346, Brazil.
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Villeneuve A, Montuelle B, Bouchez A. Effects of flow regime and pesticides on periphytic communities: evolution and role of biodiversity. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2011; 102:123-33. [PMID: 21356174 DOI: 10.1016/j.aquatox.2011.01.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2010] [Revised: 01/13/2011] [Accepted: 01/17/2011] [Indexed: 05/07/2023]
Abstract
The effects of chemical and physical factors on periphyton structure, diversity and functioning were investigated in an outdoor mesocosm experiment. Stream biofilms were subjected to a pesticide mix (diuron and azoxystrobin) under two different hydraulic regimes. The hydraulic regimes differed by spatial variations of flow conditions (turbulent with high variations vs. laminar with low variations). The effects of the hydraulic regime and pesticides were assessed at the level of the periphytic communities. We focused on the change in the biodiversity of these communities under the two hydraulic regimes, and on the role of these biodiversity changes in case of pesticide contamination. Changes in structural (biomass, cell density), diversity (community composition assessed by PCR-DGGE and microscopic analysis) and functional (bacterial and algal production, sensitivity to the herbicide) parameters were monitored throughout a 2-month experiment. The results showed that exposure to pesticides affected the phytobenthic community targeted by the herbicide, impacting on both its growth dynamics and its primary production. Conversely, the impact of the flow regime was greater than that of pesticides on the non-target bacterial community with higher bacterial density and production in laminar mesocosms (uniform regime). An interaction between flow and pollution effects was also observed. Communities that developed in turbulent mesocosms (heterogeneous regime) were more diversified, as a result of increased microhabitat heterogeneity due to high spatial variations. However, this higher biodiversity did not increase the ability of these biofilms to tolerate pesticides, as expected. On the contrary, the sensitivity of these communities to pesticide contamination was, in fact, increased.
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