Article
Environmental Sciences
Weiwei Song, Yi Li
Summary: This study investigated the ecological state of typical tidal flats along the eastern coast of China using field sampling, numerical simulation, and high-throughput sequencing. The findings revealed that the microbial communities in different subregions of the area exhibited notable differences due to variations in water quality and pollutant discharge. The study identified the impact of river pollutants on wetland microbial communities and established ecological patterns between the river and the sea, offering suggestions for watershed management and protection of coastal tidal flats.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Jianfang Yan, Xin Hu, Liwei Qian, Xiaohua Fu, Lei Wang
Summary: Inland wetlands and estuary wetlands differ in soil carbon (C) sink, with estuary wetlands having a higher capacity due to higher primary production and tidal organics input. However, the impact of large organic input on the CO2 sequestration capacity of estuary wetlands compared to inland wetlands hasn't been discussed. This study found that while estuary wetlands had less soil organic carbon (SOC), a considerable amount came from tidal waters, leading to lower microbial biomass and enzyme activities compared to inland wetlands. However, estuary wetlands had higher capability in SOC mineralization, indicating the acceleration of CO2 sequestration. These results highlight the importance of pollution control for preserving the CO2 sink function in estuary wetlands.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Cheng Liu, Jiangbao Xia, Qian Cui, Dongjie Zhang, Min Liu, Lijun Hou, Dengzhou Gao
Summary: Crab bioturbation can affect nitrogen cycling in estuarine and coastal wetlands by altering the competition between microbial nitrogen removal and retention.
ENVIRONMENTAL RESEARCH
(2022)
Article
Geography, Physical
J. B. Hinwood, E. J. McLean
Summary: This study utilizes a multi-factor approach to assess the dynamics of small intermittently open and closed estuarine lakes and lagoons, using publicly available data. The results show that these estuaries have a sequence of regime states, with transitions driven by external forcings.
Article
Environmental Sciences
Fenfang Wang, Peng Cheng, Nengwang Chen, Yi-Ming Kuo
Summary: The study reveals tidal-driven nutrient exchange and a dynamic source-sink pattern at the mangrove-estuary interface, with mangroves acting as both a source and a sink for different nutrients. However, effluents discharged from the upstream area during ebb tide increase the export of nutrients, offsetting the role of mangroves in mitigating coastal eutrophication.
Article
Soil Science
Tianli Bao, Xiaoguang Jiao, Xueqin Yang, Mingxiang Xu, Wen Li, Yu Qiao, Liqian Gao, Yunge Zhao
Summary: The study demonstrates that the microbial community structure in biocrusts can be improved and sustained over the long term under moderate disturbance. This improvement is associated with changes in cyanobacterial biomass, available N, soil moisture, vegetation coverage, and the C/N ratio.
Article
Plant Sciences
Xiaohua Wan, Zaipeng Yu, Mengjuan Wang, Yu Zhang, Zhiqun Huang
Summary: This study found that plant leaf litter and root traits are important predictors of soil microbial biomass and enzyme activities. Different tree species with varying leaf litter and root traits are associated with differences in microbial community composition and C, N, and P acquisition enzyme activities. The findings highlight the importance of understanding the ecological linkage between plant communities and ecosystem functions.
JOURNAL OF ECOLOGY
(2022)
Article
Environmental Sciences
Changle Zhu, Shaoyang Lv, Qing Zhao, Xia Liu, Zhigang Wang, Xiangmin Zheng, Limin Zhou, Yongjie Wang
Summary: The study focused on the seasonal cycling of mercury and methylmercury in vegetated sediments in the Dongtan wetlands of the Yangtze River Estuary, as well as the potential health risk of mercury in estuarine wetlands. The results revealed significant differences in the seasonal variations of total mercury and methylmercury, with the activity of methylating bacteria identified as a major contributor to elevated methylmercury levels. It was also found that the addition of mercury greatly increased the production of methylmercury, even under suboxic conditions, indicating a long-term health risk in the wetlands.
MARINE ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Xun Cai, Jian Shen, Yinglong J. Zhang, Qubin Qin, Lewis Linker
Summary: In this study, a numerical model was used to investigate the impact of sea-level rise on biogeochemical processes in the York River Estuary. The results showed that sea-level rise amplified tidal range and increased flooding duration, leading to enhanced porewater exchanges and phytoplankton production in the shallow-water regions. However, there were relatively minimal changes in dissolved nitrogen under sea-level rise.
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2023)
Article
Soil Science
Mohammad Rahmat Ullah, Yolima Carrillo, Feike A. Dijkstra
Summary: Biocides can temporarily increase carbon and nitrogen supply to surviving microbes, leading to higher respiration and nitrogen mineralization, with soil-derived CO2 remaining higher.
APPLIED SOIL ECOLOGY
(2021)
Article
Engineering, Environmental
S. Wang, A. Miltner, A. M. Muskus, K. M. Nowak
Summary: This study demonstrates that the microbial communities involved in metamitron degradation differ between soil and water-sediment systems, with higher degradation rates and activity observed in soil. During the accelerated mineralization of metamitron, Gram-negative, Gram-positive bacteria and actinobacteria dominated in soil, while Gram-negative bacteria were the main degraders in sediment.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Marine & Freshwater Biology
Yongjie Wang, Zhigang Wang, Xiangmin Zheng, Limin Zhou
Summary: The study found that the invasion of Spartina alterniflora facilitates mercury storage in wetland sediments, affects sulfur cycling, but has similar effects on MeHg production compared to native plants in the Yangtze River estuarine wetlands.
ESTUARINE COASTAL AND SHELF SCIENCE
(2022)
Article
Environmental Sciences
Hao Wu, Jieping Tang, Weihua Li, Fei Xing, Haifei Yang, Fan Zhang, Ya Ping Wang
Summary: This study presents in-situ observations of fluid mud in the Yangtze Estuary and provides valuable insights into its formation and breakdown process. The thickness and turbulence kinetic energy of the fluid mud were found to be influenced by external factors such as advection and tidal pumping. The increased cross-channel current velocity during flood facilitated the lateral transport of eroded sediment. These findings contribute to estuarine hydrodynamic modeling studies and enhance the understanding of estuary dynamics.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Geosciences, Multidisciplinary
Long Huang, Weikai Bao, Hui Hu, David M. Eissenstat, Fanglan Li
Summary: Soil microbial communities are influenced by soil properties, and the effect of rock fragment content (RFC) on these communities is poorly understood in arid ecosystems. The experiment examined the responses of soil microbial biomass and communities to RFC gradients and planting treatments. Results showed that high RFC inhibited soil microbial development, but plants promoted microbial biomass in high RFC by improving soil properties. Soil water content and nutrient levels were important factors influencing soil microbial communities.
Article
Engineering, Marine
Dongzi Pan, Ying Li, Cunhong Pan
Summary: This study conducted a large-scale physical model experiment to investigate the impact of the construction of tidal gates on sediment distribution and morphological responses, and further analyzed the adjacent intertidal flats. The results showed significant changes in flood and ebb tide velocities after the construction of the tidal gates, leading to downstream deposition and changes in the tidal flats and estuary.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Environmental Sciences
Xianbiao Lin, Xiaofei Li, Dengzhou Gao, Min Liu, Lv Cheng
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2017)
Article
Environmental Sciences
Guoyu Yin, Lijun Hou, Min Liu, Xiaofei Li, Yanling Zheng, Juan Gao, Xiaofen Jiang, Rong Wang, Chendi Yu, Xianbiao Lin
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2017)
Article
Environmental Sciences
Rong Wang, Xiaofei Li, Lijun Hou, Min Liu, Yanling Zheng, Guoyu yin, Yi Yang
MARINE POLLUTION BULLETIN
(2018)
Article
Environmental Sciences
Xiaofei Li, Dengzhou Gao, Lijun Hou, Min Liu
SCIENCE OF THE TOTAL ENVIRONMENT
(2019)
Article
Environmental Sciences
Xiaofei Li, Jordi Sardans, Lijun Hou, Dengzhou Gao, Min Liu, Josep Penuelas
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2019)
Article
Environmental Sciences
Dengzhou Gao, Lijun Hou, Min Liu, Xiaofei Li, Yanling Zheng, Guoyu Yin, Dianming Wu, Yi Yang, Ping Han, Xia Liang, Hongpo Dong
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Environmental Sciences
Ping Yang, Dongqi Wang, Derrick Y. F. Lai, Yifei Zhang, Qianqian Guo, Lishan Tan, Hong Yang, Chuan Tong, Xiaofei Li
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2020)
Article
Environmental Sciences
Xiaofei Li, Dengzhou Gao, Lijun Hou, Wei Qian, Min Liu, Hongda Zeng, Zhibiao Chen, Chuan Tong
Summary: Estuarine sediment denitrification and anammox in response to increased nitrogen loads were investigated using a N isotope tracer approach. The study found that denitrification and anammox rates varied along the estuary, with different controls on the partitioning of N2 production. NH4+ and NOx were identified as crucial predictors for the partitioning between denitrification and anammox.
ENVIRONMENTAL POLLUTION
(2021)
Article
Environmental Sciences
Xiaofei Li, Wei Qian, Mengting Qi, Dengzhou Gao, Cheng Liu, Min Liu, Lijun Hou
Summary: The study revealed that high-frequency hypoxia can decrease denitrification and anammox rates while increasing DNRA rates, with important implications on nitrogen retention and removal.
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2021)
Article
Environmental Sciences
Wei Qian, Shi Zhang, Chuan Tong, Jordi Sardans, Josep Penuelas, Xiaofei Li
Summary: This study summarizes the dissolved oxygen concentrations in northwestern and southern Hong Kong as well as Mirs Bay over the past three decades and analyzes the crucial factors driving hypoxia in these areas. The results suggest that local productivity and water stratification are the main drivers of hypoxia formation and maintenance.
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2022)
Article
Engineering, Environmental
Xiaofei Li, Dengzhou Gao, Ye Li, Yanling Zheng, Hongpo Dong, Xia Liang, Min Liu, Lijun Hou
Summary: This study investigated the mechanisms of nitrous oxide (N2O) production in estuarine and coastal sediments under elevated nitrogen concentration using microbial inhibition, isotope mass balance, and molecular approaches. The results showed that increasing nitrate concentration led to changes in N2O production pathways and enhanced contributions from fungal denitrification and chemodenitrification. Moreover, elevated nitrate concentration also influenced the structure and abundance of nirK-type denitrifiers, which play a key role in N2O production.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Environmental Sciences
Xiaofei Li, Ye Li, Dengzhou Gao, Min Liu, Lijun Hou
Summary: The study investigates the importance of dissolved organic matter (DOM) and methanogenic community in estuarine benthic sediments for methane (CH4) production. The results show that elevated salinity can stimulate CH4 production, and the shifts in DOM molecules and methanogenic archaea taxa can drive the differences in CH4 production rates. These findings have broader implications for global CH4 estimates and the impact of eutrophication on estuarine and coastal ecosystems.
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2022)
Article
Environmental Sciences
Mengting Qi, Wei Qian, Jordi Sardans, Ye Li, Josep Penuelas, Min Liu, Lijun Hou, Xiaofei Li
Summary: By investigating the spatial and seasonal variability of hydroxylamine (NH2OH) concentrations in water and sediments in the Min River Estuary, it was found that NH2OH concentrations were higher in warm seasons and in urban areas. NH2OH concentrations were influenced by temperature, dissolved oxygen, and pH. Although N2O concentrations and fluxes were linearly correlated with NH2OH concentrations, the contribution of NH2OH to N2O production could not be determined.
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2023)
Article
Environmental Sciences
Xiaofei Li, Wei Qian, Lijun Hou, Min Liu, Zhibiao Chen, Chuan Tong
MARINE POLLUTION BULLETIN
(2020)
Article
Engineering, Civil
Xiaofei Li, Jordi Sardans, Lijun Hou, Min Liu, Chaobin Xu, Josep Penuelas
JOURNAL OF HYDROLOGY
(2020)