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Zhang M, Ji J, Liu L, Guo Y, Chen J. Response of microbial communities to nutrient removal in coastal sediment by using ecological concrete. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-27386-3. [PMID: 37155101 DOI: 10.1007/s11356-023-27386-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 04/28/2023] [Indexed: 05/10/2023]
Abstract
Ecological concrete (eco-concrete) is a kind of environment-friendly material with porous characteristics. In this study, the eco-concrete was used to remove the total nitrogen (TN), total phosphorus (TP), and total organic carbon (TOC) in marine coastal sediment. The bacterial communities in sediment and on eco-concrete surface were also investigated by using high-throughput sequencing and quantitative PCR of 16S rRNA gene. We found that the mean removal efficiencies of TN, TP, and TOC in treatment group were 8.3%, 8.4%, and 12.3% after 28 days. The bacterial community composition in the treatment group was significantly different from that in the control group on day 28. In addition, the bacterial community composition on eco-concrete surface was slightly different from that in sediment, and the copy numbers of 16S rRNA gene were higher on eco-concrete surface than in sediment. The types of eco-concrete aggregates (gravel, pebble, and zeolite) also had effects on the bacterial community composition and 16S rRNA gene copy numbers. Furthermore, we found the abundant genus Sulfurovum increased significantly on eco-concrete surface in the treatment group after 28 days. Bacteria belonging to this genus were found having denitrification ability and were commonly detected in bioreactors for nitrate removal. Overall, our study expands the application scopes of eco-concrete and suggests that the bacterial communities in eco-concrete can potentially enhance the removal efficiency of nutrients in coastal sediment.
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Affiliation(s)
- Meiling Zhang
- School of Advanced Manufacturing, Fuzhou University, Jinjiang, 362200, China
- Marine Engineering Research and Development Center of Jinjiang Science and Education Park, Fuzhou University, Jinjiang, 362200, China
- Institute of Natural Products and Traditional Chinese Medicine Modernization, Fuzhou University, Fuzhou, 350108, China
| | - Jiannan Ji
- Marine Engineering Research and Development Center of Jinjiang Science and Education Park, Fuzhou University, Jinjiang, 362200, China
- Institute of Natural Products and Traditional Chinese Medicine Modernization, Fuzhou University, Fuzhou, 350108, China
- College of Biological Science and Engineering, Fuzhou University, Fuzhou, 350108, China
| | - Lemian Liu
- School of Advanced Manufacturing, Fuzhou University, Jinjiang, 362200, China.
- Marine Engineering Research and Development Center of Jinjiang Science and Education Park, Fuzhou University, Jinjiang, 362200, China.
- Institute of Natural Products and Traditional Chinese Medicine Modernization, Fuzhou University, Fuzhou, 350108, China.
- College of Biological Science and Engineering, Fuzhou University, Fuzhou, 350108, China.
| | - Yisong Guo
- School of Advanced Manufacturing, Fuzhou University, Jinjiang, 362200, China
- Marine Engineering Research and Development Center of Jinjiang Science and Education Park, Fuzhou University, Jinjiang, 362200, China
- Institute of Natural Products and Traditional Chinese Medicine Modernization, Fuzhou University, Fuzhou, 350108, China
- College of Biological Science and Engineering, Fuzhou University, Fuzhou, 350108, China
| | - Jianfeng Chen
- School of Advanced Manufacturing, Fuzhou University, Jinjiang, 362200, China
- Marine Engineering Research and Development Center of Jinjiang Science and Education Park, Fuzhou University, Jinjiang, 362200, China
- Institute of Natural Products and Traditional Chinese Medicine Modernization, Fuzhou University, Fuzhou, 350108, China
- College of Biological Science and Engineering, Fuzhou University, Fuzhou, 350108, China
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Lam-Gordillo O, Huang J, Barceló A, Kent J, Mosley LM, Welsh DT, Simpson SL, Dittmann S. Restoration of benthic macrofauna promotes biogeochemical remediation of hostile sediments; An in situ transplantation experiment in a eutrophic estuarine-hypersaline lagoon system. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 833:155201. [PMID: 35421488 DOI: 10.1016/j.scitotenv.2022.155201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 03/25/2022] [Accepted: 04/08/2022] [Indexed: 06/14/2023]
Abstract
Estuarine ecosystems have very high ecological and economic value, and also act as a buffer for coastal oceans by processing nutrient inputs from terrestrial sources. However, ongoing pressures from increased urbanisation and agriculture, overlaid by climate change, has reduced inflows and increased nutrient loads that challenge the health and buffering capacity of these ecosystems. This study aimed to investigate whether restoring the bioturbating activity of Simplisetia aequisetis (Polychaeta: Nereididae) and other macrofauna could improve biogeochemical conditions in 'hostile' (i.e. hypersaline, sulfide-rich) sediments. To achieve this aim, we conducted an in situ experiment in the Coorong estuarine-lagoon ecosystem, translocating hostile hypersaline sediments, devoid of bioturbating macrofauna, to a 'healthy' (lower salinity) location where macrobenthic fauna naturally occur, and manipulating the S. aequisetis density in the sediments. Porewater, solid-phase, and diffusive equilibrium and diffusive gradient in thin-films (DET/DGT) measurements showed that bioturbation by macrobenthic fauna significantly influenced sediment biogeochemistry and remediated hostile conditions in sediment within a short time (four weeks) irrespective of S. aequisetis density. Bioturbation promoted sediment oxygenation, while salinity and the concentrations of total organic carbon and porewater sulfide, ammonium, and phosphate all decreased over time at all sediment depths. This research highlights the importance of macrobenthic communities and their functional traits for improving sediment conditions, promoting resilience to eutrophication, providing a nature-based remediation option, and in general ensuring healthy functioning of estuarine ecosystems.
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Affiliation(s)
- Orlando Lam-Gordillo
- College of Science and Engineering, Flinders University, GPO Box 2100, Kaurna Country, Adelaide, SA 5001, Australia.
| | - Jianyin Huang
- University of South Australia, STEM, Scarce Resources and Circular Economy (ScaRCE), Kaurna Country, SA 5095, Australia
| | - Andrea Barceló
- College of Science and Engineering, Flinders University, GPO Box 2100, Kaurna Country, Adelaide, SA 5001, Australia
| | - Jordan Kent
- College of Science and Engineering, Flinders University, GPO Box 2100, Kaurna Country, Adelaide, SA 5001, Australia
| | - Luke M Mosley
- School of Biological Sciences, University of Adelaide, Kaurna Country, Adelaide, Australia
| | - David T Welsh
- University of South Australia, STEM, Scarce Resources and Circular Economy (ScaRCE), Kaurna Country, SA 5095, Australia; School of Environment, Griffith University, Yugambeh/Kombumerri Country, Queensland, Australia
| | - Stuart L Simpson
- Centre for Environmental Contaminants Research, CSIRO Land & Water, Tharawal Country, Lucas Heights, NSW 2234, Australia
| | - Sabine Dittmann
- College of Science and Engineering, Flinders University, GPO Box 2100, Kaurna Country, Adelaide, SA 5001, Australia
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Hou Y, Li B, Feng G, Zhang C, He J, Li H, Zhu J. Responses of bacterial communities and organic matter degradation in surface sediment to Macrobrachium nipponense bioturbation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 759:143534. [PMID: 33293082 DOI: 10.1016/j.scitotenv.2020.143534] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 10/24/2020] [Accepted: 10/25/2020] [Indexed: 06/12/2023]
Abstract
The excessive accumulation of organic matter (OM) in sediments in aquaculture ponds is a potential environmental threat due to the risk of endogenous water pollution and eutrophication. From the perspective of inhibiting OM accumulation to prevent endogenous water pollution, the present study investigated the OM degradation states, variations of bacterial communities and basic environmental factors in sediments with/without Macrobrachium nipponense treatment/control groups in triplicate for effects of bioturbation on OM degradation in 90-day incubation. The total organic carbon (TOC) and total nitrogen (TN) in the M. nipponense treatment were higher than in the control at the 30th and 60th days, while no significant differences between treatment and control were found at the end of the experiment. Significantly higher oxidation-reduction potential (ORP) and more extensively degraded OM were observed in the M. nipponense treatment. Eleven significantly differential bacterial taxa were enriched in the sediments of M. nipponense treatment, of which eight (Actinobacteria, Chitinophagales, Chitinophagaceae, Flavihumibacter, Marinilabiliaceae, Cytophaga xylanolytica group, Christensenellaceae, and Christensenellaceae R-7 group) were significantly correlated with at least two OM degradation indicators. The functional groups chemoheterotrophy, aerobic chemoheterotrophy, xylanolysis, ureolysis, and intracellular parasites were enhanced by M. nipponense and were negatively correlated with OM degradation indictors. Overall, the M. nipponense bioturbation effectively increased the ORP to provide better conditions for OM degradation, altered the taxonomic composition and functional groups to enhance the bacterial ability for OM degradation, and finally promoted the OM degradation of the surface sediment in an artificial aquaculture system.
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Affiliation(s)
- Yiran Hou
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China
| | - Bing Li
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China
| | - Gongcheng Feng
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, China
| | - Chengfeng Zhang
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China
| | - Jie He
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China
| | - Haidong Li
- Zhejiang Ocean University, School of Fishery, Zhoushan 316022, China
| | - Jian Zhu
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China.
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Sanz-Lázaro C, Casado-Coy N, Beltrán-Sanahuja A. Biodegradable plastics can alter carbon and nitrogen cycles to a greater extent than conventional plastics in marine sediment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 756:143978. [PMID: 33307497 DOI: 10.1016/j.scitotenv.2020.143978] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 11/10/2020] [Accepted: 11/14/2020] [Indexed: 06/12/2023]
Abstract
The seabed constitutes a global sink for plastic debris, where they can remain for centuries. Biodegradable plastics offer the advantage of having less persistence in the environment than conventional ones. The seabed is responsible for key ecosystem functions related to the cycling of elements by decomposing the labile fraction of organic matter and fueling primary production, while storing the most recalcitrant part of this organic matter and limiting CO2 emissions. Although plastics are expected to affect these processes, knowledge on this matter is scarce. In controlled microcosms, we show that biodegradable plastics can stimulate the decomposition of marine-buried carbon and reduce the release of inorganic nitrogen. We found that conventional and biodegradable plastics promoted anaerobic sediment metabolic pathways. Biodegradable plastics produced a two-fold CO2 release to the water column, which suggests the decomposition of not only plastics, but also of buried organic carbon. The stimulation of sediment metabolism could be due to excessive carbon consumption by bacteria that derives from a rise in the carbon:nitrogen ratio. Accordingly, the NH4+ flux to the water column lowered. As NOx fluxes also lowered, biodegradable plastics might promote nitrification-denitrification coupling. If biodegradable plastics become a major component of marine pollution, then sediment biogeochemical cycles might be strongly influenced, which could affect the carbon sequestration of coastal ecosystems and compromise their mitigation capacity against climate change.
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Affiliation(s)
- Carlos Sanz-Lázaro
- Department of Ecology, University of Alicante, PO Box 99, E-03080 Alicante, Spain; Multidisciplinary Institute for Environmental Studies (MIES), Universidad de Alicante, P.O. Box 99, E-03080 Alicante, Spain.
| | - Nuria Casado-Coy
- Multidisciplinary Institute for Environmental Studies (MIES), Universidad de Alicante, P.O. Box 99, E-03080 Alicante, Spain
| | - Ana Beltrán-Sanahuja
- Analytical Chemistry, Nutrition & Food Sciences Department, University of Alicante, 03690 Alicante, Spain
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