Article
Biodiversity Conservation
Bowen Wu, Shiniu Dai, Xinli Wen, Chang Qian, Fang Luo, Jinqian Xu, Xiaodong Wang, Ying Li, Yilong Xi
Summary: This study investigated the response of Chla to abiotic factors and small zooplankton (SZ) dynamics in 21 subtropical shallow lakes along the lower reach of the Chinese Yangtze River. The results showed differences in Chla and TP:Chla ratio between urban and suburban lakes, with different factors regulating Chla in these two lake types. Furthermore, the relationship between TP and Chla weakened in urban lakes when SZ density exceeded a certain threshold.
ECOLOGICAL INDICATORS
(2022)
Article
Environmental Sciences
Zisen Liu, Guoliang Bai, Yunli Liu, Yilingyun Zou, Zimao Ding, Rou Wang, Disong Chen, Lingwei Kong, Chuan Wang, Lei Liu, Biyun Liu, Qiaohong Zhou, Feng He, Zhenbin Wu, Yi Zhang
Summary: This study investigated the long-term effects of sediment improvement and submerged plant restoration on the ecosystem of a sub-tropical shallow urban lake in Hangzhou West Lake, China. The results showed that the restoration project decreased sediment phosphorus and organic matter, increased submerged plant biomass and sediment microbial diversity, and improved the benthic macroinvertebrate communities. These findings have significant implications for the ecological management of shallow lakes.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Chuanxin Chao, Ligong Wang, Yang Li, Zhiwei Yan, Huimin Liu, Dan Yu, Chunhua Liu
Summary: The restoration of aquatic macrophytes decreased phosphorus content in water and sediments while increasing nitrogen and carbon content in sediments. It significantly influenced the alpha diversity of bacterial communities in sediments, with higher values observed in restored zones compared to bare zones, but had no significant influence on water samples.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Chao Guo, Wei Li, Shiqi Li, Zhan Mai, Tanglin Zhang, Jiashou Liu, Adam G. Hansen, Lin Li, Xingwei Cai, Brendan J. Hicks
Summary: Fish community manipulation plays a crucial role in restoring submerged aquatic vegetation in shallow lakes of the middle and lower Yangtze River Basin. In-situ fish exclusion experiments and large-scale lake manipulations demonstrated that removal of benthivorous and herbivorous fish can significantly increase SAV coverage and biomass, as well as improve water quality. This study highlights the importance of considering fish community manipulation alongside nutrient reduction when restoring SAV in shallow lakes.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Shenghua Hu, Xiaofei Chen, Xiaolong Huang, Chenxi Wu
Summary: Degradation of lake ecosystem is a common issue worldwide, and it is crucial to remediate degraded lakes to ensure water safety and ecosystem health. Restoring submerged macrophyte has been recognized as an important measure, but its contribution to overall ecological remediation is limited. Fish manipulation, which can improve water quality and promote submerged macrophyte restoration, is often overlooked in ecological remediation projects. Future studies should focus on understanding the role of fish in lake nutrient cycle and their impact on submerged macrophyte, in order to guide fish manipulation for effective remediation of shallow lakes. It is suggested that fish manipulation measures should be considered in more ecological remediation projects globally.
Article
Engineering, Environmental
Dianneke van Wijk, Manqi Chang, Annette B. G. Janssen, Sven Teurlincx, Wolf M. Mooij
Summary: Worldwide, water quality managers aim for a state of clear, macrophyte-dominated shallow lakes rather than turbid, phytoplankton-dominated ones. However, the concept of critical turbidity has been neglected in contemporary water quality models. In this study, an innovative graphical and mathematical model called GPLake-M was developed, combining the theories of critical turbidity and resource competition mechanisms. The results provide insights into the regime shifts in shallow lakes and can serve as a starting point for further research and model development.
Article
Ecology
Ying Liu, Liang He, Sabine Hilt, Rui Wang, Huan Zhang, Gang Ge
Summary: The study found that invasive herbivorous snails have a strong negative impact on native submerged macrophytes, especially under nutrient-rich conditions. This impact accelerates macrophyte consumption rates, leading to a negative feedback loop and an increased risk of shallow lakes shifting to turbid states.
FRESHWATER BIOLOGY
(2021)
Article
Environmental Sciences
Shaoxuan Zhang, Xia Zeng, Ping Sun, Tianhua Ni
Summary: Heavy metal contamination in large shallow lakes in China is a growing concern. While previous research has focused on the human health risk, little attention has been given to the impact on aquatic organisms. This study examined the ecological risks of seven heavy metals to different species in Taihu Lake. The results showed the exceedance of several heavy metals compared to background levels, with Cd posing the highest ecological risk.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Multidisciplinary Sciences
Juan Diaz-Colunga, Nanxi Lu, Alicia Sanchez-Gorostiaga, Chang-Yu Chang, Helen S. Cai, Joshua E. Goldford, Mikhail Tikhonov, Alvaro Sanchez
Summary: Microbial communities frequently invade one another as a whole, a phenomenon known as community coalescence. This study provides direct evidence that collective invasions can lead to ecological coselection in microbial communities due to cross-feeding interactions at the community level.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Multidisciplinary Sciences
Xuehui Pi, Qiuqi Luo, Lian Feng, Yang Xu, Jing Tang, Xiuyu Liang, Enze Ma, Ran Cheng, Rasmus Fensholt, Martin Brandt, Xiaobin Cai, Luke Gibson, Junguo Liu, Chunmiao Zheng, Weifeng Li, Brett A. Bryan
Summary: Lakes are important natural resources and sources of carbon emissions, and they are undergoing rapid changes worldwide in response to climate change and human activities. Through a global characterization of lakes, we found that lake area has increased over the past four decades, with a significant contribution from reservoirs. Although small lakes account for a small percentage of the global lake area, they have a significant impact on the variability of total lake size. The increase in lake area has led to higher carbon emissions, with small lakes playing a major role.
NATURE COMMUNICATIONS
(2022)
Article
Multidisciplinary Sciences
Elizabeth Christina Miller, Christopher M. Martinez, Sarah T. Friedman, Peter C. Wainwright, Samantha A. Price, Luke Tornabene
Summary: The disparity in species richness between shallow water and deep sea fish can be explained by alternating phases of shallow water diversification and deep-sea colonization and speciation. Shallow marine fish became highly diverse 100 million years ago during a period of warm temperatures and high sea level, while deep-sea colonization and speciation were favored during brief periods when cooling temperatures increased the efficiency of the ocean's carbon pump. Time-variable ecological filters limited the colonization from shallow to deep sea, maintaining higher species richness in shallow water.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Biochemistry & Molecular Biology
Peiwen Xiong, C. Darrin Hulsey, Carmelo Fruciano, Wai Y. Wong, Alexander Nater, Andreas F. Kautt, Oleg Simakov, Martin Pippel, Shigehiro Kuraku, Axel Meyer, Paolo Franchini
Summary: This study compared two closely related Neotropical cichlid fish lineages using 40 resequenced genomes and two de novo assembled genomes. Despite inhabiting similar ecological environments, the evolutionary outcomes of the two lineages were markedly different.
Article
Environmental Sciences
Wanqing Qian, Jianshe Chen, Qun Zhang, Changlu Wu, Qiang Ma, Brian R. Silliman, Jihua Wu, Bo Li, Qiang He
Summary: Restoration of coastal wetlands often focuses on relieving abiotic stress and preventing disturbances, while overlooking the impact of herbivorous grazers on plant recovery. Field experiments have shown that crab grazing, rather than abiotic stress, is the main obstacle to the recovery of native foundation plant species such as Scirpus maritimus. Control measures for crab grazing are essential for successful restoration, even in areas with optimal abiotic conditions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Xiumei Zhang, Wei Zhen, Henning S. Jensen, Kasper Reitzel, Erik Jeppesen, Zhengwen Liu
Summary: The combined treatment of submerged macrophytes and Phoslock (R) showed stronger improvement in water quality compared to individual measures, especially in reducing soluble reactive phosphorus. The treatment also led to transformation of phosphorus forms in different sediment layers, potentially accelerating lake restoration process.
ENVIRONMENTAL POLLUTION
(2021)
Article
Environmental Sciences
Han Liu, Guihua Liu, Wei Xing
Summary: The study found that in eutrophic shallow lakes along the middle-lower reaches of the Yangtze River, flat-leaf submerged macrophytes have stronger functional traits, improving underwater light conditions and water quality, while needle-leaf submerged macrophytes exhibit higher ecological functions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Fisheries
Adam G. Hansen
NORTH AMERICAN JOURNAL OF FISHERIES MANAGEMENT
(2019)
Article
Fisheries
Adam G. Hansen, Jennifer R. Gardner, Kristin A. Connelly, Matt Polacek, David A. Beauchamp
Summary: This study found that in a temperate irrigation reservoir, adult bull trout exhibited the highest degree of trophic specialization, mainly consuming coldwater pelagic fish. Trophic niche overlap probabilities were high between bull trout and burbot, emphasizing the importance of maintaining a diverse forage fish community for promoting coexistence. Competitive interactions between adult bull trout and burbot could potentially increase if key prey were limited or less diverse.
ECOLOGY OF FRESHWATER FISH
(2022)
Article
Environmental Sciences
Chao Guo, Wei Li, Shiqi Li, Zhan Mai, Tanglin Zhang, Jiashou Liu, Adam G. Hansen, Lin Li, Xingwei Cai, Brendan J. Hicks
Summary: Fish community manipulation plays a crucial role in restoring submerged aquatic vegetation in shallow lakes of the middle and lower Yangtze River Basin. In-situ fish exclusion experiments and large-scale lake manipulations demonstrated that removal of benthivorous and herbivorous fish can significantly increase SAV coverage and biomass, as well as improve water quality. This study highlights the importance of considering fish community manipulation alongside nutrient reduction when restoring SAV in shallow lakes.
ENVIRONMENTAL POLLUTION
(2022)
Article
Fisheries
Jesse M. Lepak, Adam G. Hansen, Mevin B. Hooten, Daniel Brauch, Estevan M. Vigil
Summary: The ectoparasite S. californiensis has rapidly spread in kokanee salmon populations, with a significant increase in prevalence and intensity found in older/mature kokanee salmon by 2020. The parasite's population growth appears to be slowing down, but multiple environmental and biological factors have contributed to its expansion. Continued monitoring of parasite-host dynamics is needed to reveal patterns and address concerns about the sustainability of the kokanee salmon population.
JOURNAL OF FISH DISEASES
(2022)
Editorial Material
Fisheries
Erik T. Cristan, Adam G. Hansen, Jesse M. Lepak
Summary: Characterizing the effects of preservation on the body size of larval fish, this study found that wet weights decreased by 40-70% while total lengths had no clear trend. It highlights the importance of considering preservation effects when studying fish body size dynamics.
NORTH AMERICAN JOURNAL OF FISHERIES MANAGEMENT
(2022)
Editorial Material
Fisheries
Collin J. Farrell, Brett M. Johnson, Adam G. Hansen, Christopher A. Myrick, Eric C. Anderson, Thomas A. Delomas, Andrea D. Schreier, Joel P. Van Eenennaam
Summary: This study analyzed the concordance between molecular-based and Coulter counter-based ploidy determinations for Walleyes Stizostedion vitreum, finding an agreement of >98%. The ease of collecting and storing samples for molecular-based approaches relative to traditional cytological methods supports the utility of molecular methods for ploidy determination.
NORTH AMERICAN JOURNAL OF FISHERIES MANAGEMENT
(2022)
Article
Fisheries
Adam G. Hansen, Allison McCoy, Gary P. Thiede, David A. Beauchamp
Summary: Important knowledge gaps exist regarding trophic interactions among nonnative species and invertebrates, which may contribute to the extirpation of Lahontan cutthroat trout from Lake Tahoe, USA.
ECOLOGY OF FRESHWATER FISH
(2023)
Article
Engineering, Environmental
Rong-Gui Zhu, Chang-Gui Pan, Feng-Jiao Peng, Chao-Yang Zhou, Jun-Jie Hu, Kefu Yu
Summary: This comprehensive survey investigated the occurrence, bioaccumulation, and trophic magnification of parabens and their metabolite 4-HB in a marine food web. Results showed that parabens were the predominant pollutants in marine organisms, with significant bioaccumulation from sediments. The estimated trophic magnification factor indicated biomagnification for MeP and trophic dilution for 4-HB. Overall, the risks for humans consuming marine organisms were found to be low.
Article
Engineering, Environmental
Andres F. Torres-Franco, Deborah Leroy-Freitas, Cristina Martinez-Fraile, Elisa Rodriguez, Pedro A. Garcia-Encina, Raul Munoz
Summary: Anaerobic and microalgae-based technologies have emerged as sustainable alternatives for municipal wastewater treatment. However, the presence of viruses in the treated wastewater is a major concern for reuse applications. This study assessed the ability of these technologies to reduce viruses during secondary wastewater treatment. The results showed that all technologies were effective in reducing the concentration of viruses, with microalgae-based treatment exhibiting the highest potential for reducing the disinfection requirements of treated wastewater.
Article
Engineering, Environmental
Young Gwang Kim, Sae Yun Kwon, Spencer J. Washburn, Scott C. Brooks, Ji Won Yoon, Lucien Besnard
Summary: The study uses Hg isotope ratios to identify the sources and exposure pathways of mercury in bivalves, finding that dissolved Hg phases in the water column are the primary source and exposure pathway to bivalves. This provides new insights into using bivalves as bioindicators for sediment quality monitoring.
Article
Engineering, Environmental
Hui Geng, Ying Xu, Rui Liu, Dianhai Yang, Xiaohu Dai
Summary: This study investigates the effect of cation exchange resin (CER) on the sequential recovery of hydrogen and methane from anaerobic digestion (AD) and the corresponding mechanisms. The results show that CER can simultaneously enhance the production of hydrogen and methane by promoting the solubilisation, hydrolysis, and acidification of organic matter. Additionally, CER facilitates effective contact between bacteria and organic particulates and reduces the energy barrier for mass transfer during methane production. The study also reveals changes in the microbial community structure and metagenomics during the AD process.
Article
Engineering, Environmental
Xiaojing Lin, Zhan Jin, Shunfeng Jiang, Zhiquan Wang, Suqing Wu, Ke Bei, Min Zhao, Xiangyong Zheng
Summary: Dehumidification combined with addition of absorbent resin supplement (ARS) was used to achieve rapid evaporation of non-pretreated urine, resulting in high water evaporation efficiency and nutrient recovery.
Article
Engineering, Environmental
Yangli Che, Chaoran Lin, Shen Li, Jiao Liu, Longhai Zhu, Shilei Yu, Nan Wang, Haoshuai Li, Mutai Bao, Yang Zhou, Tonghao Si, Rui Bao
Summary: Hydrodynamic processes play a crucial role in the transmission of sediments, microbial assembly, and organic carbon redistribution in the ocean. Through experiments and analysis, we found that hydrodynamics shape the assembly of microbial communities and control the redistribution of different sourced organic carbon, thereby influencing microbial-mediated biogeochemical transformation.
Article
Engineering, Environmental
Chao Chen, Yu Yang, Nigel J. D. Graham, Zhenyu Li, Xingtao Yang, Zhining Wang, Nadia Farhat, Johannes S. Vrouwenvelder, Li -an Hou
Summary: The fouling of seawater reverse osmosis membranes is a persistent challenge in desalination. This study monitored the operational performance of a desalination plant for 7 years and the fouling development in different areas of membrane modules. The findings showed that operational performance declined over time and fouling mainly occurred at the feed side of the modules, with the highest microbial diversity. Keystone species like Chloroflexi and Planctomycetes played an important role in maintaining community structure and biofilm maturation. Polysaccharides, soluble microbial products, marine humic acid-like substances, and inorganic substances contributed to fouling. Overall, biofouling had a significant impact on membrane fouling after 7 years of operation.
Article
Engineering, Environmental
Dan Li, Jieyi Sun, Yibo Fu, Wentao Hong, Heli Wang, Qian Yang, Junhong Wu, Sen Yang, Jianhui Xu, Yunfei Zhang, Yirong Deng, Yin Zhong, Ping'an Peng
Summary: Sulfidation-oxidation treatment of magnetite (Fe3O4) enhances the production of dark center dot OH, which can efficiently degrade dissolved organic matter (DOM) and accelerate carbon cycling.
Article
Engineering, Environmental
Cheng Yu, Kaijun Wang, Kaiyuan Zhang, Ruiyang Liu, Pingping Zheng
Summary: This study implemented a microaerobic-aerobic configuration in a full-scale municipal wastewater treatment facility and investigated the effects on sludge characteristics, pollutant removal, microbial community, and granulation mechanisms. The results showed successful transition from flocculent-activated sludge to well-defined AGS after two months of operation. The primary pathways for pollutant removal were simultaneous nitrification, denitrification, and phosphorus removal. Moreover, the incorporation of internal separators induced shifts in the flow pattern, which promoted granulation.
Article
Engineering, Environmental
Zhe Zhang, Shaoyang Hu, Guangrong Sun, Wei Wang
Summary: Halogenated aromatic disinfection byproducts (DBPs), such as halogenated phenols, have garnered widespread attention due to their high toxicity and prevalence. This study reports on the analysis, occurrence, and cytotoxicity of a group of emerging halogenated aromatic DBPs, known as halogenated polyhydroxyphenols (HPPs), in drinking water.
Article
Engineering, Environmental
Shengyue Chen, Jinliang Huang, Peng Wang, Xi Tang, Zhenyu Zhang
Summary: Accurate prediction of river water quality is crucial for sustainable water management. This study introduces wavelet analysis and transfer learning techniques to assist LSTM modeling, proposing a newly coupled modeling approach that improves short-term prediction of river water quality.
Article
Engineering, Environmental
Bang Du, Xinmin Zhan, Piet N. L. Lens, Yifeng Zhang, Guangxue Wu
Summary: Efficient anaerobic digestion relies on the cooperation of different microorganisms with different metabolic pathways. This study investigated the effects of different operational modes and the addition of powdered activated carbon (PAC) on ethanol metabolic pathways. The results showed that the SBR mode and the presence of CO2 facilitated ethanol metabolism towards propionate production, while the CFR mode with extended solids retention time enriched Geobacter. Adjusting operational modes and PAC addition can modulate anaerobic ethanol metabolism and enrich Geobacter.
Article
Engineering, Environmental
Wanfa Wang, Si-Liang Li, Jun Zhong, Yuanbi Yi, Fujun Yue, Zenglei Han, Qixin Wu, Ding He, Cong-Qiang Liu
Summary: This study compares the carbon biogeochemical processes in karst and non-karst regions within large thermal stratified river-reservoir systems. The results demonstrate that karst reservoirs have a reduced potential for carbon emissions and highlight the importance of considering geologic settings to improve accuracy in regional and global CO2 emission estimates.
Article
Engineering, Environmental
Chunxia Jiang, Zelong Zhao, Dong Zhu, Xiong Pan, Yuyi Yang
Summary: This study analyzed the occurrence and distribution of antibiotic resistance genes (ARGs) in different environmental media of the Yangtze River using metagenomics. Core resistome dominated by multidrug resistance genes was found in all samples, while rare resistome dominated by various resistance genes was more prevalent in plasmids. Specific bacteria were identified as hosts for both core and rare resistomes, with high clinical concern ARGs found in the rare resistome. Particle-associated environment provided the most ideal conditions for resistome hosts. This study provided insights into the genetic locations of ARGs and the community assembly mechanisms of ARG hosts in freshwater environments.
Article
Engineering, Environmental
Yu Zhang, Yongtao He, Linchun Jia, Lei Xu, Zheng Wang, Yueling He, Ling Xiong, Xumeng Lin, Hong Chen, Gang Xue
Summary: By synergizing organic carbon source, thiosulfate, and zero-valent iron, efficient mixotrophic denitrification of oligotrophic secondary effluent can be achieved. Thiosulfate plays a vital role in promoting TN removal efficiency, while corrosion of Fe0 releases OH- to neutralize H+ from thiosulfate-driven denitrification, creating a suitable environment for denitrification. The coordination of thiosulfate and Fe0 maintains the dominance of Thiobacillus for denitrification.