Article
Environmental Sciences
Huanjun Zhang, Liu Yang, Yi Li, Chao Wang, Wenlong Zhang, Longfei Wang, Lihua Niu
Summary: The study reveals that severe pollution reduces microbial diversity and network complexity, potentially leading to community instability. Competition for nutrients among copiotrophic bacteria may be enhanced as pollution levels increase. Unique keystone taxa in the severe pollution group may contribute to photosynthesis and pollutant degradation.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Wanpeng Jiang, Qianqian Chen, Liqiang Xu
Summary: Through analyzing a piston core collected from Chaohu Lake in east China, the sedimentary history of silver (Ag) was examined, revealing significant changes and suggesting human activity as the driving factor for its distribution.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2023)
Article
Environmental Sciences
Yulai Wang, Wanqing Gu, Xin Liu, Hui Liu, Gui Tang, Changming Yang
Summary: This study investigated the combined impacts of algae bloom and its induced variations in heavy metals on microbial community in sediment from a eutrophic lake. The results showed that algae bloom increased the quantity of water soluble organic matter and redistributed the spatial patterns of heavy metals in sediment. The bloom also decreased the richness and diversity of sediment bacterial community, with the combined impacts of algae-induced changes explaining 66.56% of the variations in bacterial community structure.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Chunhui Yang, Jiying Li, Hongbin Yin
Summary: Sediment phosphorus release plays a crucial role in controlling eutrophication in Lake Chaohu, with higher release rates in the west region compared to the east. Long-term release is dominated by the remobilization of iron-bound phosphorus, while short-term release is mainly from legacy phosphorus in surface sediments.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Shuai Zeng, Zihong Qin, Baozhen Ruan, Shaohua Lei, Jian Yang, Weiwei Song, Qiang Sun
Summary: This study used MODIS data to investigate the trends and distribution patterns of particulate phosphorus (PP) concentration in eutrophic Lake Chaohu in the Yangtze River Basin. A new empirical model was developed to estimate CPP, and the results showed an overall increasing trend and significant spatiotemporal heterogeneity in CPP in Lake Chaohu. Chemical fertilizer consumption, municipal wastewater, industrial sewage, precipitation, and air temperature were identified as the five main driving factors affecting CPP variation, collectively explaining more than 81% of the long-term variation. This study provides valuable insights and long-term datasets for future water eutrophication control and restoration efforts.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Huijuan Cao, Kun Zhang, Daogui Deng, Huiying Qi, Jun Li, Yaqin Cao, Qide Jin, Yajie Zhao, Yeping Wang, Zhou Wu, Xinyue Li, Ying Li
Summary: The study investigated the seasonal variation and spatial distribution of phytoplankton community structure, density, and biomass in Lake Chaohu from August 2020 to July 2021. It found significant spatial heterogeneity in the distribution of phytoplankton community structure and dominant functional groups in the lake.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Wenguang Luo, Yao Yue, Jing Lu, Lina Pang, Senlin Zhu
Summary: This study quantified the effect of hydraulic disturbances on sediment phosphate release in a representative shallow lake in China. The results showed that the release rate of phosphate increased with the intensity of hydraulic disturbances, and varied among different regions. These findings have important implications for water quality assessment and pollutant management in shallow lakes.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Engineering, Environmental
Junkai Gao, Guanglong Liu, Xiaowen Li, Mengjuan Tang, Xiuyun Cao, Yiyong Zhou, Chunlei Song
Summary: This study investigated the impact of organic carbon quantity and composition on nitrate reduction pathways in two basins of Lake Chaohu in Hefei City, China. It was found that the serious algal bloom in the west basin resulted in higher organic carbon accumulation and nitrate deficiency, leading to a high C/NO3--N ratio. This triggered dissimilatory nitrate reduction to ammonium (DNRA) and specific bacterial communities played a role in this process.
Article
Geosciences, Multidisciplinary
Jasmine S. Berg, Mathilde Lepine, Emile Laymand, Xingguo Han, Hendrik Vogel, Marina A. Morlock, Niroshan Gajendra, Adrian Gilli, Stefano M. Bernasconi, Carsten J. Schubert, Guangyi Su, Mark A. Lever
Summary: This study comprehensively investigates the deep lacustrine biosphere in Lake Cadagno and its impact on sediment geochemistry and vice versa. The findings reveal distinct redox gradients, microbial activities, and organic carbon remineralization processes in the deep sediment layers compared to the water column.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Environmental Sciences
Weizhen Zhang, Ji Shen, Jianjun Wang
Summary: The study found that biodiversity loss may lead to weakened ecosystem functioning in freshwater ecosystems, with environmental stressors such as eutrophication and heavy metals influencing the relationships between biodiversity and EMF. Sediment heavy metals and total phosphorus significantly explained spatial variations in EMF, with heavy metals potentially more important than phosphorus.
ENVIRONMENTAL POLLUTION
(2021)
Article
Environmental Sciences
Wiebe Foerster, Jan C. Scholten, Michael Schubert, Kay Knoeller, Nikolaus Classen, Michael Lechelt, Jan-Helge Richard, Udo Rohweder, Isabell Zunker, Susanne C. Wanner
Summary: Despite various treatment techniques implemented over the past 15 years, the eutrophic Lake Eichbaumsee near Hamburg, Germany, continues to experience increasing phosphorous levels. Investigations suggest that significant sources of phosphorous flux are from sediment pore water and groundwater, highlighting the importance of groundwater in the lake's phosphorous balance.
Article
Environmental Sciences
Xiaomei Su, Hong Ling, Dan Wu, Qingju Xue, Liqiang Xie
Summary: This study investigated the contamination of heavy metals in Lake Yangcheng, a eutrophic lake in China. Results showed that heavy metals were retained and accumulated in the sediments, with the west lake region having the highest ecological risks. The highest metal concentrations were observed in winter, except for mercury which showed a different seasonal pattern. Anthropogenic activities were identified as the major sources, and industrial discharge was the main contributor to antimony pollution. Measures should be taken to prevent heavy metal pollution in the lake, particularly in the west region.
Article
Environmental Sciences
Hanxiao Zhang, Shouliang Huo, Kevin M. Yeager, Fengchang Wu
Summary: Global freshwater lakes are undergoing changes due to human activities and climate change, with lake sedimentary archives providing insights into historical environmental trends, as demonstrated in this study of Lake Chaohu in China. The construction of the Chaohu Dam in 1963 was associated with decreased richness of eukaryotic algal and cyanobacterial communities, while historical nutrient enrichment led to increased abundance of certain groups. Nutrient concentrations and hydrologic conditions were identified as dominant controls on communities, with significant impacts on community structures following changes in lake hydraulic residence times.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Fei Deng, Dongwei Zhang, Liting Yang, Lijuan Li, Yu Lu, Jing Wang, Yujiao Fan, Yanrong Zhu, Xiaowen Li, Yao Zhang
Summary: This study investigates the effects of antibiotics, heavy metals, and antibiotic resistance genes (ARGs) on denitrification in shallow lakes. The results show that antibiotics and metal elements inhibit denitrification, while ARGs stimulate it. Different types of denitrifying bacteria are associated with different environmental factors.
Article
Biotechnology & Applied Microbiology
Z. Shen, F. Wang, Y. Liang, Y. Li, Q. Liu, F. Liu
Summary: The study revealed the abundant microbial resources and functional genes related to heavy metal transport and reduction in the sediment of western Chaohu Lake through metagenome sequencing. The sediments from the estuary of Nanfeihe River were found to contain a large number of functional genes, providing a scientific basis for controlling heavy metal pollution in Chaohu Lake and utilizing microbial resources.
LETTERS IN APPLIED MICROBIOLOGY
(2022)