Review
Environmental Sciences
Ning Li, Yan Li, Jiaxiang Wei, Ke Liu, Genmei Wang, Huanchao Zhang, Jiale Wen, Xinyu Cheng
Summary: The geographical location of West Taihu Lake determines its role as the entrance to the whole Taihu Lake, and the intensive industries around it pose a significant threat to the lake's ecology. In this study, we combined Pb isotope ratio analysis with ecological risk assessment index to quantify the source-oriented ecological risk of heavy metals in the sediments of West Taihu Lake. The results showed that HM pollution in the study area was mainly caused by anthropogenic sources, with moderate ecological risk.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Green & Sustainable Science & Technology
Yan Li, Xiaoping Wang, Ping Gong
Summary: By using a non-parametric risk assessment method and LISA analysis, the combined risks of heavy metals and PAHs pollutants in Taihu Lake sediments were tested. The study showed that the developed method could distinguish pollution hot spots in different regions of Taihu Lake and identified combustion of petroleum fossil fuels as the main source of pollutants.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Environmental Sciences
Xiaozhu Liu, Qunqun Liu, Yanqing Sheng
Summary: Excessive nutrients in aquatic ecosystems are the main driving factors for eutrophication and water quality deterioration. This study investigated the effects of nitrate nitrogen and phosphate addition in the overlying water on the environmental behaviors of chromium, copper, and cadmium in coastal river sediments. It was found that microorganisms play an important role in reducing the concentration of heavy metals in sediments and overlying water by enhancing the binding ability of phosphate and heavy metal ions.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Ke Rao, Tao Tang, Xiang Zhang, Mo Wang, Jianfeng Liu, Bi Wu, Ping Wang, Yongliang Ma
Summary: The survey of heavy metals and major metals in sediment from Lake Houguan showed high concentrations for some metals, severe pollution for certain heavy metals, and high ecological risks. Analysis indicated a complex origin of heavy metals, with certain metals showing correlations with environmental factors.
Article
Environmental Sciences
Parul Maurya, Rina Kumari
Summary: This study assessed the spatial and seasonal variation of nutrients and heavy metals in mangrove water in the Gulf of Kachchh, India, revealing high salinity and chloride concentrations influenced by seasonal changes and anthropogenic inputs. Water quality is impacted by anthropogenic activities in the industrial hub of Gulf of Kachchh, with relatively high levels of nutrients and metals posing a risk to the flora and fauna of the ecosystem.
ENVIRONMENTAL RESEARCH
(2021)
Article
Biodiversity Conservation
Kangkang Yu, Yanqin Zhang, Xinghua He, Zihan Zhao, Mingli Zhang, Yan Chen, Xiulu Lang, Yanhua Wang
Summary: The rapid economic development in the Yangtze River Delta has had a significant impact on the carbon pool in lake sediments, posing a serious environmental management issue. This study investigated the characteristics of organic carbon (OC) in lacustrine sediments, focusing on its composition, spatial distribution, and burial. The results showed regional differences in the concentrations of dissolved OC (DOC), heavy fraction OC (HFOC), and light fraction OC (LFOC) in Taihu Lake. HFOC was found to dominate the OC buried in lake sediments. The deposition rate of OC varied across different lake areas, with LFOC levels being lower than in other lakes. Both LFOC and HFOC were significantly correlated with nitrogen (N) content, suggesting that an increase in N enhanced the carbon sink in the sediments. The presence of grass-type lake zones stimulated carbon accumulation in Taihu Lake sediments.
ECOLOGICAL INDICATORS
(2022)
Article
Environmental Sciences
Fei Wang, Xiaoming Ren, Yang Qiu, Jiade Cheng, Yan Chen, Lingling Wang, Limin Zhang, Shanshan Zhao, Xiaoping Wang, Chen Sun
Summary: The study found that the sediments of 17 typical rivers on the western bank of Taihu Lake contained multiple heavy metals exceeding local background values, posing ecological risks. Cadmium contamination was particularly serious, indicating potentially severe ecological risks. Nickel, antimony, chromium, and copper were found to be derived from industrial sources, while the origins of other metals were more complex.
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Dianpeng Li, Rendong Yu, Jing Chen, Xin Leng, Dehua Zhao, Hongtao Jia, Shuqing An
Summary: Intensive anthropogenic activities, specifically, industrial and agricultural production, have led to the accumulation of heavy metals in lake sediment, posing threats to aquatic ecosystems and human health. Evaluating the potential ecological risk of heavy metals in lake sediment is crucial for effective lake management. However, large-scale risk evaluations of heavy metal pollution in lake sediment are lacking in densely populated countries like China. This study compiled data from 190 lakes across five geographic zones in China and evaluated the ecological risk and sources of heavy metals in lake sediment, providing valuable insights for policy formulation and lake restoration.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Environmental Sciences
Nan Geng, Yu Bai, Suli Pan
Summary: This paper investigates the release of heavy metals into overlying water under hydrodynamic conditions in lakes. Experimental results show that the concentration of heavy metals is closely related to the concentration of total suspended solids and is influenced by flow velocity. A numerical model based on lattice Boltzmann method is established, and it outperforms traditional simulation models in terms of accuracy. This research contributes to the prediction of lake environments and provides a theoretical basis for heavy metal treatment in reservoirs.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Engineering, Environmental
Hou-Qi Liu, Yan Zhang, Zi-Jiao Yuan, Cong Sun
Summary: The study investigated the pollution status of heavy metals in the sediment around Taihu Lake in China, showing that some heavy metals exceeded probable effect levels. Overall, the heavy metals were slightly enriched and indicated moderate to heavy pollution. Cd was identified as the most serious pollutant based on various analyses.
WATER ENVIRONMENT RESEARCH
(2021)
Article
Engineering, Environmental
Wenguang Luo, Jing Lu, Senlin Zhu, Bo Ming
Summary: The study evaluates the contamination status of in situ sediments using organic index method, pollution index method, and potential ecological risk evaluation. The results show variations in the distribution of pollutants in different layers of sediments, and a recommended dredging depth is determined based on the simulation experiment.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2023)
Article
Environmental Sciences
Sajid Mehmood, Waqas Ahmed, Juha M. Alatalo, Mohsin Mahmood, Muhammad Imtiaz, Allah Ditta, Esmat F. Ali, Hamada Abdelrahman, Michal Slany, Vasileios Antoniadis, Jorg Rinklebe, Sabry M. Shaheen, Weidong Li
Summary: This study evaluated the performance of biochars in treating contaminated fishpond sediments. The results showed that biochars can reduce the concentrations of toxic elements, improve nutrient content, and enhance the reutilization of sediments as fertilizers.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Xinyu Lu, Karl August von Haxthausen, Andreas Libonati Brock, Stefan Trapp
Summary: Sediment microbial fuel cells have been found to effectively reduce phosphate release from sediments in eutrophic lakes, but their stimulation of sediment decomposition is limited and may not significantly accelerate the process. Increasing electrode power density could inadvertently increase the risk of releasing legacy pollutants stored in sediments.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Wenjie Chang, Ruiqi Shu, Jieli Sun, Yong Pang
Summary: This study investigated sediment samples from different regions of the Lake Taihu Basin to analyze the distribution, risks, and sources of heavy metal pollution. The results showed that the concentrations and risks of heavy metals were lower in 2018 compared to 2012. The average concentrations of the seven heavy metals were below the upper chemical exceedance level. The eastern plains and Yangtze Riverside regions had higher contents of heavy metals. The study also identified the main sources of each heavy metal through principal component analysis.
WATER AIR AND SOIL POLLUTION
(2023)
Article
Environmental Sciences
Yan Li, Shenglu Zhou, Zhenyi Jia, Ke Liu, Genmei Wang
Summary: Heavy metals in atmospheric dust can pollute soil, water, and sediment, posing a threat to human health. This study focused on the temporal and spatial distribution of heavy metals in atmospheric deposition in western Taihu Lake. Results showed that heavy metal concentrations were higher in winter, lower in summer, and correlated with distance from the city. The health risk assessment values were higher in winter and spring, especially near the city and in suburbs.
ENVIRONMENTAL POLLUTION
(2021)
Article
Ecology
Lei Wang, Yuxiang Wen, Ran Tong, Hui Zhang, Hua Chen, Ting Hu, Guoqi Liu, Jianjun Wang, Lifeng Zhu, Tonggui Wu
Summary: Nitrogen and phosphorus have significant effects on the diversity, composition, and function of soil microbial communities. N fertilization in Metasequoia glyptostroboides plantations enriched microbes involved in nitrification, denitrification, and P-starvation response regulation, leading to a decrease in alpha diversity. Phosphorus addition impacted genes involved in inorganic P-solubilization and organic P-mineralization. Functional differences in soil microbiomes were identified between plantations of different stand ages.
Article
Ecology
Minglei Ren, Jianjun Wang
Summary: This study reconstructed 17 high-quality metagenome-assembled genomes of Nitrososphaeria from freshwater environments and compared them with marine genomes. The results showed that freshwater Nitrososphaeria were dominated by the family Nitrosopumilaceae and could be grouped into three distinct clades. There was also evidence of vertical niche separation between clades in deep lakes, and phylogenetic clustering patterns supported freshwater-to-marine and marine-to-freshwater transitions in Nitrosopumilaceae. Furthermore, the study revealed the genetic changes that accompanied these transitions.
Article
Limnology
Yun Li, Rong Wang, Haojie Su, Jianjun Wang, Ping Xie, Feizhou Chen
Summary: Anthropogenic activities such as eutrophication and fishing have significant impacts on freshwater ecosystems. A study of zooplankton communities in subtropical shallow lakes in eastern China revealed that nutrient enrichment and predation have joint effects on biodiversity and ecological networks. Our findings show that nutrient conditions negatively affect alpha diversity, while beta diversity and network skewness are influenced by nutrients and omnivorous fish, with top-down effects dominating the structural adjustment of zooplankton communities.
LIMNOLOGY AND OCEANOGRAPHY
(2022)
Article
Limnology
Chaoxuan Guo, Mengyuan Zhu, Hai Xu, Yunlin Zhang, Boqiang Qin, Guangwei Zhu, Jianjun Wang
Summary: The study found that the dependency of resource use efficiency (RUE) on phytoplankton diversity has spatiotemporal patterns. The RUE of nitrogen, phosphorous, and silicate showed different temporal trends. RUE was affected by nutrients and water temperature, and was also related to phytoplankton diversity. Interestingly, there was a negative spatial dependency between RUE and phytoplankton diversity. These dependencies were related to the spatial distribution of nutrients. Furthermore, the temporal dependency of RUE on phytoplankton diversity differed in different regions, primarily driven by the temporal stability of nutrients. These findings are important for future environmental management plans.
LIMNOLOGY AND OCEANOGRAPHY
(2022)
Article
Ecology
Xiaoqin Yang, Yue Li, Bin Niu, Qiuyu Chen, Yilun Hu, Yibo Yang, Lili Song, Jianjun Wang, Gengxin Zhang
Summary: The study investigated the effects of temperature and precipitation on the alpha and beta diversity of soil archaea and bacteria in alpine grasslands, discovering that temperature and precipitation had significant indirect effects on microbial richness and evenness through local environmental and energy supply-related variables, such as vegetation richness. Temperature exerted a larger direct influence on LCBD and the community composition of the microbial community.
Article
Engineering, Environmental
Mengdie Geng, Weizhen Zhang, Ting Hu, Rong Wang, Xiaoying Cheng, Jianjun Wang
Summary: This study investigated the effects of eutrophication on microbial community structure in shallow lakes in the Yangtze-Huaihe River basin in China. The results showed that eutrophication led to the homogenization of bacterial and fungal communities in both water and sediments. Physicochemical factors such as water temperature, pH, and heavy metals were found to influence the community structure. Importantly, generalist species were found to play a dominant role in explaining the variations in beta diversity along the trophic gradient.
Article
Ecology
Caio Graco-Roza, Sonja Aarnio, Nerea Abrego, Alicia T. R. Acosta, Janne Alahuhta, Jan Altman, Claudia Angiolini, Jukka Aroviita, Fabio Attorre, Lars Baastrup-Spohr, Jose J. Barrera-Alba, Jonathan Belmaker, Idoia Biurrun, Gianmaria Bonari, Helge Bruelheide, Sabina Burrascano, Marta Carboni, Pedro Cardoso, Jose C. Carvalho, Giuseppe Castaldelli, Morten Christensen, Gilsineia Correa, Iwona Dembicz, Jurgen Dengler, Jiri Dolezal, Patricia Domingos, Tibor Eros, Carlos E. L. Ferreira, Goffredo Filibeck, Sergio R. Floeter, Alan M. Friedlander, Johanna Gammal, Anna Gavioli, Martin M. Gossner, Itai Granot, Riccardo Guarino, Camilla Gustafsson, Brian Hayden, Siwen He, Jacob Heilmann-Clausen, Jani Heino, John T. Hunter, Vera L. M. Huszar, Monika Janisova, Jenny Jyrkankallio-Mikkola, Kimmo K. Kahilainen, Julia Kemppinen, Lukasz Kozub, Carla Kruk, Michel Kulbiki, Anna Kuzemko, Peter Christiaan le Roux, Aleksi Lehikoinen, Domenica Teixeira de Lima, Angel Lopez-Urrutia, Balazs A. Lukacs, Miska Luoto, Stefano Mammola, Marcelo M. Marinho, Luciana S. Menezes, Marco Milardi, Marcela Miranda, Gleyci A. O. Moser, Joerg Mueller, Pekka Niittynen, Alf Norkko, Arkadiusz Nowak, Jean P. Ometto, Otso Ovaskainen, Gerhard E. Overbeck, Felipe S. Pacheco, Virpi Pajunen, Salza Palpurina, Felix Picazo, Juan A. C. Prieto, Ivan F. Rodil, Francesco M. Sabatini, Shira Salingre, Michele De Sanctis, Angel M. Segura, Lucia H. S. da Silva, Zora D. Stevanovic, Grzegorz Swacha, Anette Teittinen, Kimmo T. Tolonen, Ioannis Tsiripidis, Leena Virta, Beixin Wang, Jianjun Wang, Wolfgang Weisser, Yuan Xu, Janne Soininen
Summary: This study provides the first global synthesis of taxonomic and functional distance decay along spatial and environmental distance. The results demonstrate that taxonomic distance decay is stronger than functional distance decay, with the fastest decay rates observed in datasets from mid-latitudes. Overall, taxonomic distance decay is a useful tool for biogeographical research, while functional distance decay may be a cost-effective option for investigating community changes in heterogeneous environments.
GLOBAL ECOLOGY AND BIOGEOGRAPHY
(2022)
Review
Plant Sciences
Jianjun Wang, Ang Hu, Fanfan Meng, Wenqian Zhao, Yunfeng Yang, Janne Soininen, Ji Shen, Jizhong Zhou
Summary: Mountains are crucial for maintaining habitat heterogeneity, biodiversity, ecosystem functions, and providing services to humans. Over the past decade, there has been significant progress in studying microbial diversity on mountainsides. Microbial communities exhibit climate zonation along elevational gradients, and species richness patterns are driven by deterministic processes influenced by abiotic and biotic factors. Current research is shifting towards understanding the mechanisms shaping microbial biogeographical patterns and their responses to global change.
Article
Environmental Sciences
Yun Li, Mengdie Geng, Jinlei Yu, Yingxun Du, Min Xu, Weizhen Zhang, Jianjun Wang, Haojie Su, Rong Wang, Feizhou Chen
Summary: Human activities threaten freshwater biodiversity and ecosystem function. This study examined the spatial variations in plankton communities in 40 lakes of the Yangtze River Basin and found that these variations were influenced by factors such as trophic status and environmental heterogeneity. The results suggest that eutrophication, leading to increased trophic status and decreased environmental dissimilarity, may weaken the trophic cascading effects in planktonic food chains.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Zhonghua Zhao, Xiaolong Yao, Qiqi Ding, Xionghu Gong, Jianjun Wang, Saadu Tahir, Ishmael Aaron Kimirei, Lu Zhang
Summary: This study investigated the occurrence of 70 anthropogenically-sourced OMPs in 18 lakes in Tanzania, revealing high pollution levels of PAEs, suggesting the need for targeted monitoring and pollution control measures.
Article
Engineering, Environmental
Ang Hu, Fanfan Meng, Andrew J. Tanentzap, Kyoung-Soon Jang, Jianjun Wang
Summary: There are uncharacterized microbial taxa and chemical metabolites (dark matter) in Earth's ecosystems. Lack of knowledge about dark matter hinders understanding of microbial ecology and biogeochemical cycles. The importance of dark matter in changing network connectivity within bacterial and DOM assemblages is correlated between bacteria and DOM and increases with higher primary productivity.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Microbiology
Chaoran Li, Lingzhan Miao, Tanveer M. Adyel, Wei Huang, Jianjun Wang, Jun Wu, Jun Hou, Zhiyuan Wang
Summary: Global climate change has a significant impact on river ecosystems by influencing microbial biodiversity and ecological functions. This study conducted dry-wet alternation experiments and found that there was a significant difference in the recovery of bacterial and eukaryotic biodiversity after drought. Eukaryotes were more sensitive to drought duration and had a stronger effect on ecosystem functions than bacteria after long-term drought. This research highlights the importance of eukaryotic biodiversity in the biodiversity-ecosystem-function relationship, especially in intermittent rivers and ephemeral streams (IRES).
ENVIRONMENTAL MICROBIOLOGY
(2023)
Article
Ecology
Shengwei Liu, Jiaxiong Zeng, Huang Yu, Cheng Wang, Yunfeng Yang, Jianjun Wang, Zhili He, Qingyun Yan
Summary: Microorganisms in the Xikuangshan antimony mining site in China contribute to the cycling of phosphorus and increase its bioavailability. This study found that the diversity, structure, and traits of bacterial communities were primarily influenced by soil antimony and pH. The study also identified a specific bacteria that can solubilize phosphate and enhance heavy metal resistance through an antimony efflux pump. These findings offer new strategies for managing and remediating heavy metal-contaminated ecosystems.
Article
Ecology
Luyao Kang, Leiyi Chen, Ziliang Li, Jianjun Wang, Kai Xue, Ye Deng, Manuel Delgado-Baquerizo, Yutong Song, Dianye Zhang, Guibiao Yang, Wei Zhou, Xuning Liu, Futing Liu, Yuanhe Yang
Summary: The formation of thermokarst lakes can release a significant amount of carbon and impact the climate. Prokaryotes play a crucial role in regulating biogeochemical cycles in thermokarst lakes, but their large-scale patterns and drivers are not well understood.
GLOBAL ECOLOGY AND BIOGEOGRAPHY
(2023)
Article
Microbiology
Jiawen Liu, Wenqian Zhao, Minglei Ren, Yongqin Liu, Yan Xu, Jianjun Wang
Summary: This study examines the elevational patterns and driving factors of bacterial and fungal diversity and community composition in streams on the Tibetan Plateau. The results show distinct elevational trends in species richness and ecological uniqueness for bacteria and fungi. Climate factors have a greater influence on fungal diversity, while bacterial diversity is influenced by both climate and local factors.
FEMS MICROBIOLOGY ECOLOGY
(2022)
