Article
Engineering, Environmental
Chunyu Hua, Jingyu He, Zhaotong Fang, Mengyuan Zhu, Zhaojie Cui, Lijun Ren
Summary: This study investigated the distribution characteristics of potentially toxic metals in the soil of the Huangshui River region and evaluated the contamination risk of heavy metals. The results showed that there are limitations in the risk assessment when selecting the standard value or background value as the evaluation factor, which may exaggerate the risk. Furthermore, a health risk assessment model was used to assess the risks for adults and children in different land use types.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Environmental Sciences
Naveen Radhakrishnan, Sonam Taneja, Saurav Ambastha, Harsh Pipil, Anil Kumar Haritash
Summary: Sediment quality assessment is important for evaluating the quality of rivers and this study focuses on assessing heavy metal concentration in size-fractionated sediments of River Ganga and identifying sources of contamination. The results show that the sediments are contaminated and enriched with toxic metals, with Chinyalisaur, Devaprayag, and Rishikesh being classified as pollution hotspots. Natural sources contribute to aluminum and iron, while anthropogenic sources contribute to chromium, zinc, lead, nickel, copper, and cadmium. Immediate interventions are needed to control further contamination by restricting wastewater discharge into River Ganga.
MARINE POLLUTION BULLETIN
(2023)
Article
Engineering, Chemical
Changqing Shan, Zaiwang Zhang, Deyong Zhao, Meiling Zou, Wenwen Huang, Xiangrui Wang, Jianchao Jin, Yanpeng Zhang, Qian Yang, Wenjun Xie, Jialiang Li
Summary: Surface soils from the main winter jujube planting base in China were collected and analyzed for six heavy metals. The concentrations of most metals were higher than the background values, but below the risk screening values for agricultural soil in China. The soils were considered suitable for winter jujube cultivation, with no pollution observed. It was suggested to control the new inputs of heavy metals through proper utilization of pesticides and fertilizers.
Article
Environmental Sciences
Lihui Xiang, Jinwei Yang, Yanfen Wang, Qiang Liu, Gang Zhang
Summary: This study assessed the sources and pollution risk of heavy metals in the Old Yellow River estuary by systematically sampling and analyzing surface sediments. Multiple indicators were used to distinguish the sources and assess the pollution risk. The results showed that some heavy metals were derived from natural sources, while mercury and cadmium were derived from anthropogenic sources.
MARINE POLLUTION BULLETIN
(2023)
Article
Environmental Sciences
Zhi-Hua Li, Ze-Peng Li, Xue Tang, Wen-Hao Hou, Ping Li
Summary: The lower reaches of the Yellow River have seen rapid development of industry and agriculture, leading to some pollution. Despite a lack of information on toxic contaminants in the surface waters, a study was conducted to investigate the distribution of pollutants and analyze potential risks, including heavy metals and antibiotics. Results showed that key surface water pollution components were COD, BOD5, TN, and TP, with significant spatial relationships observed in pollutant distribution along the river, particularly at the Kenli site. The study provides valuable baseline data and technical support for relevant government departments in managing pollution in the lower Yellow River.
Article
Biodiversity Conservation
Yalcin Tore, Fikret Ustaoglu, Yalcin Tepe, Erkan Kalipci
Summary: The study assessed the levels of heavy metals in fish species from the Tigris River in Turkey and found that most of them were below the maximum permissible limits, posing no health risk to consumers. However, some species showed elevated levels of certain heavy metals, indicating a potential toxicological hazard to community health.
ECOLOGICAL INDICATORS
(2021)
Article
Environmental Sciences
Maria Luisa Astolfi, Marcelo Enrique Conti, Marcello Messi, Elisabetta Marconi
Summary: Bees are crucial for maintaining biodiversity and food availability, but their population is decreasing due to human activities and environmental pollution. A study shows that probiotics can protect bees from chemical absorption. This research provides valuable information for future studies in various fields, including environment, agriculture, economy, territory, and medicine.
Article
Environmental Sciences
Dhafer Mohammed M. Al Salah, Amandine Laffite, Periyasamy Sivalingam, John Pote
Summary: The study found high abundances of ARB and ARGs in sediment samples from two suburban rivers in the Democratic Republic of the Congo. Metals correlated with grain size, organic matter content, and total copies of 16s rRNA, influencing the persistence of ARB and ARGs in sediments.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Geochemistry & Geophysics
Futian Liu, Xueqiu Wang, Shuang Dai, Jian Zhou, Dongsheng Liu, Qinghai Hu, Wei Wang, Mingjun Xie, Yuexin Lu, Mi Tian, Hao Yan
Summary: This study focused on analyzing soil heavy metals (HMs) in the middle Yellow River Basin in northern China. Geostatistical techniques were used to analyze the spatial variations of soil HMs, and multiple methods were employed to comprehensively assess the pollution status and health risks. The positive matrix factorization (PMF) model was used to determine the sources of soil HMs. The results showed regional zoning of soil HMs, with higher levels in the south near industrial cities. The comprehensive assessment identified relatively severe pollution and health risks in certain areas, primarily caused by Hg, Cd, and Pb. The PMF model identified five sources of soil HMs, with natural sources contributing the most. Key areas with combined pollution of soil HMs and high health risks were identified, emphasizing the need for prevention and control measures for Hg, Cd, Pb, and As in the middle Yellow River Basin.
JOURNAL OF GEOCHEMICAL EXPLORATION
(2023)
Review
Environmental Sciences
P. Senthil Kumar, R. Gayathri, B. Senthil Rathi
Summary: Water resources are essential for living beings but are gradually diminishing due to factors like population growth and industrial activities. Heavy metals, common pollutants in water systems, can be effectively removed using adsorption techniques, with agricultural wastes serving as low-cost adsorbents in the process.
Article
Environmental Sciences
Yuxiu Jin, Jun Du, Yonggen Sun, Enkang Wang, Wenwen Yan
Summary: This study analyzed the concentrations, sources, and pollution status of heavy metals in surface sediments from Laoshan Bay, China. The results showed that Cu, Zn, Cr, and As were not found to be polluted, while Pb, Cd, and Hg were polluted to varying degrees. The sources of heavy metals were mainly natural and anthropogenic.
MARINE POLLUTION BULLETIN
(2023)
Article
Environmental Sciences
Jianxiu Hao, Jun Ren, Ling Tao, Hongbing Fang, Suxia Gao, Yinping Chen
Summary: Recently, the water quality of China's second longest river, the Yellow River, has severely deteriorated. Enrichment of heavy metals, particularly Cd, poses potential harm to aquatic organisms. Analysis indicates that the primary sources of heavy metal pollution in the upstream Yellow River are natural, with some contribution from human activities.
POLISH JOURNAL OF ENVIRONMENTAL STUDIES
(2021)
Article
Environmental Sciences
Zaiwang Zhang, Tongrui Zhang, Wenhao Yu, Jikun Xu, Jialiang Li, Tao Wu, Suzhe Liu, Haiyang Wang, Yuxia Wang, Shuai Shang, Aiguo Lin
Summary: Heavy metals, major pollutants in wetland environments, were found to be present in high mass fractions in the sediments of wetlands vegetated by invasive species Spartina alterniflora. The study also revealed correlations among metal elements and identified clay and TOC as important factors affecting metal distribution. The pollution levels of these metals were relatively low, indicating low potential ecological risks.
Article
Biodiversity Conservation
Michael Martinez-Colon, Henry Alegria, Ashley Huber, Hatice Kubra-Gul, Perihan Kurt-Karakus
Summary: The mangrove forest in southern Puerto Rico is exposed to various sources of pollution, leading to accumulation of potentially toxic elements in flora and fauna. Fiddler crabs act as both de-concentrators for most pollutants and macro-concentrators for copper and arsenic. Arsenic is the only element found to be biomagnified through the sediment-mangrove leaf-fiddler crab food chain.
ECOLOGICAL INDICATORS
(2021)
Article
Geochemistry & Geophysics
Joanna Jaskula, Mariusz Sojka, Michal Fiedler, Rafal Wrozynski
Summary: The pollution of river bottom sediments by heavy metals is a significant environmental issue resulting from human activities. A study on the Warta River in Poland showed that heavy metal pollution was heavier in 2016 compared to 2017, with lower ecological hazard in the latter year. Cluster analysis revealed distinct groups of sample collection stations with similar chemical properties, suggesting that the concentrations of heavy metals may be influenced by urbanized areas and river processes.
Article
Environmental Sciences
Liehui Zhi, Xiaowen Li, Junhong Bai, Dongdong Shao, Baoshan Cui, Yonglin Mu, Tiantian Ma, Xu Xie, Hazrat Bilal, Usman Abdullahi
Summary: Coastal wetlands in China have been enclosed by seawalls to support rapid socio-economic development, but the long-term ecological impacts of hardened seawalls under sea level rise (SLR) have not been well understood. This study used land-use analysis, ecosystem services assessment, and a marsh model to explore the effects of seawalls on the dynamics of tidal wetlands and Coastal Blue Carbon storage (CBCs) in the Yellow River Delta under SLR.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Xin Wang, Junhong Bai, Chen Wang, Tian Xie, Wei Wang, Dawei Wang, Guangliang Zhang
Summary: Our research aimed to find new resources for bacterial nitrification inhibitors (BNIs) and investigate their mechanisms of action through multiomics approaches. We discovered that leaf extracts from Suaeda salsa (both red and green phenotypes) in the Yellow River Delta showed strong nitrification inhibition ability. We identified oxalic acid (OA) and protocatechuic aldehyde (PA) as novel BNIs, constructed their synthetic pathways, identified key genes involved in their synthesis, and revealed their inhibition mechanisms on Nitrosomonas europaea using transcriptomics and metabolomics. Another finding was that PA exhibited nitrification inhibition effects in saline-alkali soil, cinnamon soil, and red soil, with the most effective inhibition in saline-alkali soil, while OA only showed nitrification inhibition effects in red soil.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Ecology
Zhonghua Ning, Baoshan Cui, Cong Chen, Tian Xie, Weilun Gao, Youzheng Zhang, Zhenchang Zhu, Dongdong Shao, Dongxue Li, Junhong Bai
Summary: Understanding how geomorphic structures influence habitat invasibility is crucial for predicting invasive species range-expansion. This study focuses on the role of tidal channel meanders in regulating the invasion of Spartina alterniflora in the Yellow River Delta, China. The findings indicate that hydrodynamic variables, soil abiotic stresses, and propagule pressure play significant roles in facilitating or inhibiting Spartina invasion. The meandering geomorphic structures of tidal channels can act as stepping-stones for Spartina's landward spread.
ECOLOGICAL APPLICATIONS
(2023)
Article
Environmental Sciences
Rong Xiao, Bo Kuang, Yanping Hu, Yaping Wang, Junhong Bai, Ling Zhang, Chen Wang, Zhuoqun Wei, Kegang Zhang, Milko A. Jorquera, Marco Campos, Jacquelinne J. Acuna, Wenbin Pan
Summary: This study evaluated the potential ecological risk of glyphosate to sediment-dwelling organisms and assessed the probable effect of glyphosate on the structure and predicted function of sediment-attached bacterial communities from a large shallow lake in northern China based on 16S rRNA high-throughput sequencing. Results suggested that glyphosate showed a medium to high concentration and chronic risk to sediment-dwelling organisms, especially in sites nearby farmland and residential areas. Glyphosate accumulation stimulated certain bacterial species while inhibiting others, leading to changes in bacterial metabolic functions.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2023)
Article
Environmental Sciences
Yaqi Wang, Junhong Bai, Lixiang Wen, Wei Wang, Ling Zhang, Zhe Liu, Haizhu Liu
Summary: Freshwater ecosystems are at risk due to the accumulation of microplastics, but the effects on aquatic plant metabolism are not well understood. In this study, Spirodela polyrhiza was exposed to polyvinyl chloride (PVC) microplastics, and the changes in plant traits and metabolism were monitored. The results showed that high doses of PVC microplastics reduced root elongation and leaf multiplication, as well as anthocyanin and nitrogen contents. Metabolomics analysis revealed differential metabolites involved in carbon, nitrogen, amino acid, and lipid metabolism. PVC microplastics had concentration-related toxicological effects on plant traits and nutrient metabolism, with implications for the nitrogen cycle in aquatic plant habitats.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Chuanhui Gu, Junhong Bai, Chengdong Zhang, Yanchao Bai
Summary: River stage fluctuations enhance nitrogen cycling in riparian zones. Water table fluctuation zone facilitates coupled nitrification and denitrification, leading to increased nitrate removal. Net nitrate reduction rate in groundwater is influenced by the number of river stage fluctuations, cumulative water influx, and other factors. The presence of oxygen diffusion is crucial for accurately estimating nitrate removal capacity in riparian zones.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Ling Zhang, Junhong Bai, Kegang Zhang, Yaqi Wang, Rong Xiao, Marco Campos, Jacquelinne Acuna, Milko A. Jorquera
Summary: Antibiotics in shallow lakes pose potential threats to human health, and their concentrations and ecological risks are influenced by agricultural activities and river input.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Microbiology
Bo Kuang, Rong Xiao, Yanping Hu, Yaping Wang, Ling Zhang, Zhuoqun Wei, Junhong Bai, Kegang Zhang, Jacquelinne J. Acuna, Milko A. Jorquera, Wenbin Pan
Summary: The abundance, diversity, and metabolic pathways of microbial communities in Baiyangdian lake sediments were studied using a metagenomic approach. It was found that several genera, particularly belonging to Proteobacteria and Actinobacteria, were involved in C, N, P, and S cycling processes. Nocardioides, in particular, played a significant role in nitrogen transformation processes such as assimilatory nitrate reduction, denitrification, and dissimilatory nitrate reduction.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Agriculture, Multidisciplinary
Guozhu Chen, Junhong Bai, Chen Bi, Yaqi Wang, Baoshan Cui
Summary: This study analyzes the historical evolution and future trends of greenhouse gas emissions from aquaculture, highlighting the significant role of Chinese research institutions and scholars in this field. The research hotspots have shifted from inland freshwater aquaculture and monoculture to offshore aquaculture and ecological integrated aquaculture. The study also emphasizes the increasing focus on restoring damaged coastal wetland and enhancing blue carbon sink function to reduce GHG emissions.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2023)
Article
Geosciences, Multidisciplinary
Zhonghua Ning, Cong Chen, Tian Xie, Shanze Li, Zhenchang Zhu, Qing Wang, Yanzi Cai, Junhong Bai, Baoshan Cui
Summary: This study investigated the impact of Spartina alterniflora invasion on bio-geomorphic feedback in a tidal channel-salt marsh system in the Yellow River Delta of China. The invasion promoted sedimentation, leading to increased inundation conditions and reduced survival and growth of native species. The growth of Spartina alterniflora was dependent on the inundation depth.
Article
Geosciences, Multidisciplinary
Guangliang Zhang, Junhong Bai, Wei Wang, Jia Jia, Laibin Huang, Fanlong Kong, Min Xi
Summary: Plant invasion can significantly affect the accumulation of microbial necromass carbon (MNC) in coastal Blue Carbon ecosystems. The invasion reduced the contribution of MNC to soil organic carbon (SOC) in salt marshes but increased the accumulation of microbial residues in mangrove habitats. Fungal-derived MNC was more abundant than bacterial-derived MNC, and the contribution of fungal MNC decreased with increasing mean annual temperatures. Soil carbon-to-nitrogen ratio and soil texture had negative effects on MNC/SOC, indicating the importance of soil nutrient status and physical protection in regulating MNC accumulation in coastal wetlands.
Article
Environmental Sciences
Yaqi Wang, Junhong Bai, Ling Zhang, Haizhu Liu, Wei Wang, Zhe Liu, Guangliang Zhang
Summary: Rhizosphere microorganisms and their interactions with plants in wetlands have been widely recognized for their importance in enhancing plant environmental adaptation, removing wetland pollutants, and alleviating climate change. However, the fluctuating hydrological environment of wetlands leads to more complex dynamics in the rhizosphere environment. Through bibliometric analysis, we reviewed the research progress, hotspots, and trends of rhizosphere microorganisms in wetlands, emphasizing the need for further exploration of the ecological functions of rhizosphere microorganisms in different wetland ecosystems and the plant-microbe microinterface processes.
Article
Environmental Sciences
Guangliang Zhang, Jia Jia, Qingqing Zhao, Wei Wang, Dawei Wang, Junhong Bai
Summary: Plant invasion has a profound impact on microbial-driven processes in the ecosystem, but little is known about the seasonality of soil microbial communities and their assembly under plant invasion. This study examined coastal salt marshes in the Yellow River Estuary, North China, and characterized the bacterial and fungal communities and their seasonal variance using metabarcoding sequencing. The results showed strong seasonal variances in microbial communities, but plant invasion reduced the seasonal variation strength of soil bacteria. Soil pH was found to be the key abiotic factor driving the seasonal changes in bacteria and fungi. These findings reveal the strong seasonal variability of different soil microbial constituents in plant-invaded coastal salt marshes and suggest the linkage between microbial community assembly and microbial-mediated functions in the context of plant invasions.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Ecology
Marco A. Campos, Qian Zhang, Jacquelinne J. Acuna, Joaquin I. Rilling, Tay Ruiz, Elizabeth Carrazana, Cristobal Reyno, Anthony Hollenback, Katelyn Gray, Deb P. Jaisi, Andrew Ogram, Junhong Bai, Ling Zhang, Rong Xiao, Mikael Elias, Michael J. Sadowsky, Jingming Hu, Milko A. Jorquera
Summary: Lake Villarrica in Chile was declared a nutrient-saturated lake due to increased phosphorus and nitrogen levels. This study used DNA sequencing and qPCR analyses to investigate the bacterial communities in sediments from different areas of the lake. The results showed differences in bacterial richness and diversity between anthropogenized and less-impacted sediments. Functional analysis revealed important functions related to nitrogen cycling, and certain bacterial families were identified as key players. The study also detected functional genes associated with phosphorus and nitrogen cycling, and found correlations between physicochemical properties and bacterial genera involved in nitrogen and phosphorus cycling.
Article
Microbiology
Ling Zhang, Junhong Bai, Yujia Zhai, Kegang Zhang, Zhuoqun Wei, Yaqi Wang, Haizhu Liu, Rong Xiao, Milko A. A. Jorquera
Summary: The migration of antibiotics and bacterial communities between sediments and pore water in lakes is influenced by aquatic vegetation. However, the effects of antibiotic stress on the bacterial community structure and biodiversity differences between sediment and pore water with plants in lakes are unclear. This study collected samples from both wild and cultivated Phragmites australis regions in Zaozhadian Lake to examine the characteristics of the bacterial community. The results showed that sediment samples had significantly higher bacterial community diversity compared to pore water samples in both regions with P. australis. The higher antibiotic levels in sediments from cultivated P. australis region caused differences in the composition of bacterial communities, reducing the abundance of dominant phyla in pore water and increasing it in sediments. The findings suggest that antibiotic pollution from planting activities has a substantial impact on bacterial communities, providing insights for the use and management of antibiotics in lake ecosystems.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Mohamed Khatif Tawaf Mohamed Yusof, Ahmad Safuan A. Rashid, Mohd Faisal Abdul Khanan, Muhammad Zulkarnain Abdul Rahman, Wardatun Ahmar Abdul Manan, Roohollah Kalatehjari, Ali Dehghanbanadaki
Summary: This study investigates the effects of climate change on landslide susceptibility mapping (LSM) using a case study on Penang Island in Malaysia. The results show that future rainfall and temperatures are expected to increase, especially under a higher climate change scenario. LSM can help local authorities identify critical areas for monitoring and responding to landslide risks caused by climate change.
PHYSICS AND CHEMISTRY OF THE EARTH
(2024)
Article
Geosciences, Multidisciplinary
Shivam Pandey, Ajay Singh, Anuj Kumar, Inderjeet Tyagi, Rama Rao Karri, Rama Gaur, Hamedreza Javadian, Monu Verma
Summary: This research compares the effectiveness of hydrothermally produced ZnO and SnO2 nanocatalysts in degrading p-nitrophenol, a noxious chemical in water. The study finds that ZnO catalyst has better degradation efficiency compared to SnO2 catalyst. Detailed investigation reveals the optimal conditions for degrading p-nitrophenol using ZnO photocatalysts.
PHYSICS AND CHEMISTRY OF THE EARTH
(2024)
Article
Geosciences, Multidisciplinary
Muhammad Farhan Ul Moazzam, Sudeep Thakuri, Ghani Rahman, Byung Gul Lee
Summary: This study explores the elevation dependent warming in the Indus River Basin and its impacts on cryospheric and hydrological changes. The results show significant warming trends in the Tmax and Tmin in the upper Indus Basin, with a more prominent trend observed during the winter season for Tmax. These consistent warming trends can have harmful impacts on the cryosphere of the region, leading to water scarcity and extreme droughts.
PHYSICS AND CHEMISTRY OF THE EARTH
(2024)
