Article
Environmental Sciences
Zhiyun Lu, Wei Yuan, Kang Luo, Xun Wang
Summary: In this study, microbial reduction was found to be the dominant process causing mercury isotope shift on forest floor; higher nitrogen concentration in foliage leads to greater mercury concentration; increased nitrogen deposition in global forest ecosystems may potentially influence mercury uptake by vegetation and litter mercury sequestration on forest floor.
ENVIRONMENTAL POLLUTION
(2021)
Article
Engineering, Environmental
Sarah E. Janssen, Christopher J. Kotalik, Collin A. Eagles-Smith, Gale B. Beaubien, Joel C. Hoffman, Greg Peterson, Marc A. Mills, David M. Walters
Summary: The transfer of aquatic contaminants, specifically mercury, to terrestrial animals through shoreline spiders has been studied, but there are still uncertainties regarding the estimation of mercury sources. This study collected spiders and aquatic insect larvae from different habitats to examine the transfer of mercury. The results showed a connection between benthic mercury sources and the aquatic food web, and highlighted the importance of selecting appropriate spider taxa for mercury monitoring efforts.
ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
(2023)
Article
Environmental Sciences
Sonia Romero-Romero, Efren Garcia-Ordiales, Nieves Roqueni, Jose Luis Acuna
Summary: Despite their remote location, deep-sea species have the ability to accumulate mercury, mainly in the form of the neurotoxin methylmercury (MeHg). The concentration of MeHg increases with the depth of occurrence of fish, and is influenced by their habitat. MeHg can be used as an indicator of a species' trophic position in the food web.
Article
Environmental Sciences
R. P. Mason, M. Coulibaly, G. Hansen, H. Inman, P. K. Myer, K. M. Yao
Summary: Artisanal and small-scale gold mining, energy production, and other industrial inputs are a major source of anthropogenic mercury in aquatic environments. This study focuses on the understudied estuarine waters of Cote d'Ivoire and suggests that the local population may be exposed to unsafe levels of methylmercury through fish consumption. The findings highlight the importance of addressing local sources of mercury contamination and the transportation of mercury used in gold mining activities.
Article
Environmental Sciences
Laure Laffont, Johanna Menges, Sylvaine Goix, Sophie Gentes, Regine Maury-Brachet, Jeroen E. Sonke, Alexia Legeay, Patrice Gonzalez, Raphaelle Rinaldo, Laurence Maurice
Summary: The study in French Guiana aimed to investigate the impact of gold-mining activities on mercury concentrations and isotopic signatures in freshwater fish consumed by local residents. Analysis of Hg concentrations and isotopic ratios in fish muscles revealed differences in biogeochemical processes between fish from impacted and pristine areas, indicating potential influences of suspended particles on mercury concentrations. The study also highlighted the potential of Hg isotopes in fish as complementary tracers to understand the sources and processes of mercury accumulation in aquatic ecosystems.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Muhammad Aamir Munir, Bushra Khan, Ishaq Ahmed Mian, Muhammad Rafiq, Samreen Shahzadi, Kashif Naeem, Iqbal Ahmad
Summary: Mercury bioaccumulation in fish and scalp hair was assessed in fishing communities along the river Swat in Pakistan. Significant differences were found in mercury concentrations between upstream and downstream fish and scalp hair. Health problems in the fishing community were attributed to mercury accumulation from fish consumption.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Laia Munoz-Abril, Carlos A. Valle, Juan Jose Alava, Sarah E. Janssen, Elsie M. Sunderland, Francisco Rubianes-Landazuri, Steven D. Emslie
Summary: This study examined the effects of dietary factors recorded by C and N on Hg uptake in yellowfin tuna from the Galapagos Marine Reserve and the Ecuadorian mainland coast. The results showed that variations in Hg stable isotopes were related to changes in carbon and nitrogen isotopes, indicating food web shifts as the driving force behind Hg variations in tuna populations.
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
(2022)
Article
Environmental Sciences
Sarah E. Janssen, Kathleen A. Patnode, Bruce R. Pluta, David P. Krabbenhoft
Summary: Mercury contamination in river systems due to historic and current Hg releases is a persistent concern for both wildlife and human health. This study uses Hg stable isotope analysis to investigate the influence of industrial effluent on the cycling and bioaccumulation of Hg within the Ohio River. The results show that suspended particulate matter is the largest contributor of Hg to the water column, with distinct Hg source signatures observed in effluent particulates from different industrial processes.
INTEGRATED ENVIRONMENTAL ASSESSMENT AND MANAGEMENT
(2021)
Article
Environmental Sciences
A. M. Azad, S. Frantzen, M. S. Bank, L. Madsen, A. Maage
Summary: The study reveals that tusk in Norwegian fjords can accumulate high levels of mercury in the food chain, with catchment runoff likely playing a significant role in mercury bioaccumulation in this species.
ENVIRONMENTAL POLLUTION
(2021)
Article
Environmental Sciences
C. Heredia, S. Guedron, D. Point, V Perrot, S. Campillo, C. Verin, M. E. Espinoza, P. Fernandez, C. Duwig, D. Acha
Summary: Cultural eutrophication is a major cause of water quality degradation worldwide. Carbon and nitrogen stable isotopes are simple and integrative tools for evaluating the degree of eutrophication in anthropogenically impacted aquatic ecosystems. The study found that carbon isotopes increased and nitrogen isotopes decreased with distance from the wastewater source in macrophytes and suspended particulate matter. The distribution of aquatic plants on the slope was influenced by both anthropogenic discharges and carbon uptake pathway. A binary mixing model allowed the assessment of anthropogenically derived carbon and nitrogen incorporation in macrophytes. Eutrophication was naturally attenuated within 6 to 8 km from the wastewater source.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Caitlyn Donadt, Colin A. Cooke, Jennifer A. Graydon, Mark S. Poesch
Summary: Bioaccumulation of mercury in freshwater fish is a complex process influenced by environmental and biological factors. While surface water mercury concentrations were high in the studied tributaries of the Red Deer River, patterns of fish THg concentrations varied by species. The study suggests that mercury poses a risk to piscivorous wildlife health in these streams, but bioaccumulation is not solely driven by environmental factors and commonly associated factors like body size and trophic level may not strongly influence mercury concentrations in these ecosystems.
Article
Environmental Sciences
Bonsignore Maria, Messina Concetta Maria, Bellante Antonio, Manuguerra Simona, Arena Rosaria, Santulli Andrea, Maricchiolo Giulia, Del Core Marianna, Sprovieri Mario
Summary: Specimens of Sparus aurata were exposed to sub-lethal concentrations of Hg and Cd for 25 days. Bioaccumulation of Hg was highest in gills, while Cd bioaccumulation was highest in the liver. Gills and skin were reliable targets for biomonitoring after short-term exposure. Exposure to both metals caused significant increases in metal concentrations in the kidney and liver. Biochemical analysis showed a reduction in lipid levels and decrease in polyunsaturated fatty acids (PUFA) in the liver, indicating oxidative stress. Molecular markers related to oxidative stress and lipid metabolism were also affected by exposure. The study suggests the possibility of using these biomarkers to explore fish metabolic responses to environmental pollution.
Review
Engineering, Environmental
Mi-Ling Li, Sae Yun Kwon, Brett A. Poulin, Martin Tsz-Ki Tsui, Laura C. Motta, Moonkyoung Cho
Summary: This paper reviews the progress in using mercury isotopes to understand the internal processes of mercury in biota. Mercury stable isotopes are a powerful tool for assessing mercury sources and biogeochemical processes. Understanding the internal mechanisms leading to mercury isotope change is crucial. There is still uncertainty in the understanding of the internal processes leading to mercury isotope fractionation.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Environmental Sciences
Michael S. Bank, Sylvia Frantzen, Arne Duinker, David Amouroux, Emmanuel Tessier, Kjell Nedreaas, Amund Maage, Bente M. Nilsen
Summary: Mercury pollution in the ocean, particularly in marine apex predators like Greenland halibut, has been a global concern. A study on Greenland halibut showed a decrease in Hg bioaccumulation in fillet tissue over a ten-year period, with methylmercury being the predominant form. The decrease in Hg concentrations was attributed to factors such as declines in Hg air emissions, estimated trophic position, and trophic shifts in the food web dynamics.
ENVIRONMENTAL POLLUTION
(2021)
Article
Engineering, Environmental
Xun Wang, Wei Yuan, Che-Jen Lin, Fei Wu, Xinbin Feng
Summary: The accuracy of mercury dendrochemistry is questioned due to knowledge gaps in Hg translocation in tree-ring. Results show that Hg concentrations in tree-ring do not accurately reconstruct the temporal trend of Hg production. The isotopic profiles of Hg in tree-ring exhibit variability and can be used to reconstruct atmospheric Hg pollution levels and emission source shifts.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Ecology
Dona M. Eidam, Frank A. von Hippel, Matthew L. Carlson, Dennis R. Lassuy, J. Andres Lopez
ENVIRONMENTAL BIOLOGY OF FISHES
(2016)
Article
Fisheries
V. M. Padula, D. Causey, J. A. Lopez
JOURNAL OF FISH BIOLOGY
(2017)
Article
Multidisciplinary Sciences
Thaddaeus J. Buser, Michael D. Burns, J. Andres Lopez
Article
Multidisciplinary Sciences
Matthew A. Campbell, Michael E. Alfaro, Max Belasco, J. Andres Lopez
Article
Fisheries
Kevin M. Fraley, Trevor B. Haynes, J. Andres Lopez
NORTH AMERICAN JOURNAL OF FISHERIES MANAGEMENT
(2018)
Article
Fisheries
Allison N. Matter, Jeffrey A. Falke, J. Andres Lopez, James W. Savereide
NORTH AMERICAN JOURNAL OF FISHERIES MANAGEMENT
(2018)
Article
Zoology
Randy J. Brown, J. Andres Lopez
Article
Fisheries
Katie G. Shink, Trent M. Sutton, James M. Murphy, J. Andres Lopez
CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES
(2019)
Article
Environmental Sciences
Andrew Cyr, J. Andres Lopez, Lorrie Rea, Matthew J. Wooller, Todd Loomis, Susanne Mcdermott, Todd M. O'Hara
SCIENCE OF THE TOTAL ENVIRONMENT
(2019)
Article
Multidisciplinary Sciences
Matthew A. Campbell, Thaddaeus J. Buser, Michael E. Alfaro, J. Andres Lopez
Article
Fisheries
Erik R. Schoen, Kristen W. Sellmer, Mark S. Wipfli, Juan A. Lopez, Renae Ivanoff, Benjamin E. Meyer
Summary: Research in Alaska indicates that predation on juvenile salmon varies across seasons, habitats, and streamflow levels, with Arctic grayling and Dolly Varden char potentially excluding Chinook salmon in certain situations. This highlights the importance of considering predation risk in efforts to support Chinook salmon recovery through climate adaptation, fisheries management, and habitat restoration decisions.
ECOLOGY OF FRESHWATER FISH
(2022)
Article
Evolutionary Biology
Matthew A. Campbell, Matthew C. Hale, Chase S. Jalbert, Kristine Dunker, Adam J. Sepulveda, J. Andres Lopez, Jeffrey A. Falke, Peter A. H. Westley
Summary: Invasive species pose a major threat to biodiversity, but they also provide opportunities for ecological and evolutionary research. This study analyzed the genetic variation of native and invasive populations of northern pike and found low levels of genetic diversity, indicating bottleneck effects. The results suggest that invasive pike likely came from multiple introductions from different native populations in Alaska, and genetic admixture may have mitigated the negative effects of genetic bottlenecks. Additionally, the study identified a small isolated population of pike in Southeast Alaska that is native in origin. Although lack of genetic variation may limit colonization success, this genetically depauperate apex predator does not seem to be affected.
EVOLUTIONARY APPLICATIONS
(2023)
Article
Multidisciplinary Sciences
Ben A. Potter, Carrin M. Halffman, Holly J. McKinney, Joshua D. Reuther, Bruce P. Finney, Francois B. Lanoe, J. Andres Lopez, Charles E. Holmes, Erica Palmer, Marie Capps, Brian M. Kemp
Summary: The earliest known use of freshwater and anadromous fish in North America by humans was documented to be 13,000 and 11,800 years ago, respectively, in central Alaska. This suggests that fishing as an economic resource originated during this time period and was influenced by climatic factors.
Article
Environmental Sciences
Andrew P. Cyr, Katie A. Drew, Sierra Corsetti, Andrew C. Seitz, Trent M. Sutton, J. Andres Lopez, Matthew J. Wooller, Todd O'Hara
Summary: Arctic lamprey is an important dietary resource in Alaska, but concerns about mercury levels in their tissues and potential impact on human health exist. This study investigated the feeding ecology of Arctic lamprey and found that their diet mainly consists of capelin, Pacific sand lance, and Pacific herring, with diet composition varying with size class. Results suggest that feeding location and biomagnification are not significant factors in mercury levels in Arctic lamprey, and the current mercury levels do not pose a human health risk.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Muqiu Hu, Xin Zhao, Jinghan Gu, Lulu Qian, Zhiqing Wang, Yuanyuan Nie, Xiaoyu Han, Long An, Haiqiang Jiang
Summary: Due to its simple process, environmental friendliness, and low operating costs, biometallurgy has become a popular technology for metals recovering from low-grade ores and tailings. An optimized agar was used to isolate and grow functional bacteria, resulting in the successful isolation of six functional stains. These strains were further tested for their ability to leach metals from polymetallic sulfide tailings, with significant improvements observed when the strains were mixed together. The selection of leaching process should be based on tailings composition and target metals.
ENVIRONMENTAL RESEARCH
(2024)
Review
Environmental Sciences
Saqib Hassan, Aswin Thacharodi, Anshu Priya, R. Meenatchi, Thanushree A. Hegde, R. Thangamani, Ht Nguyen, Arivalagan Pugazhendhi
Summary: An Endocrine Disrupting Chemical (EDC) is a compound that disrupts the function of the endocrine system and is found in the environment. EDCs, such as Bisphenol A and pesticides, have been shown to have negative effects on the female reproductive system. Understanding the relationship between EDCs and women's health is crucial for developing strategies to protect reproductive health and informing public policy decisions.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Lichang Zhou, Zhaoling Li, Boyi Cheng, Jinqi Jiang, Xinqi Bi, Zongping Wang, Guanghao Chen, Gang Guo
Summary: Thiosulfate can promote sulfur-mediated bacterial activity, inhibit glycogen accumulating organisms, and enhance denitrification efficiency. After the carbon source is reduced, the competitive ability of glycogen accumulating organisms increases, resulting in reduced sulfate reduction.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Claire E. Campbell, Devyn L. Cotter, Katherine L. Bottenhorn, Elisabeth Burnor, Hedyeh Ahmadi, W. James Gauderman, Carlos Cardenas-Iniguez, Daniel Hackman, Rob McConnell, Kiros Berhane, Joel Schwartz, Jiu-Chiuan Chen, Megan M. Herting
Summary: Recent studies have found a connection between air pollution and increased risk for behavioral problems during development. However, more longitudinal studies are needed to investigate how exposure during the transition to adolescence may affect emotional behaviors.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Jing-hong Liang, Ru-yu Yang, Mei-ling Liu, Ying-qi Pu, Wen-wen Bao, Yu Zhao, Li-xin Hu, Yu-shan Zhang, Shan Huang, Nan Jiang, Xue-ya Pu, Shao-yi Huang, Guang-hui Dong, Ya-jun Chen
Summary: This study examines the association between urban Green and blue spaces (GBS) exposure and Emotion and behavior problems (EBP) in youth populations. The findings suggest that higher exposure to GBS, particularly green spaces (GS) and blue spaces (BS), is associated with a decrease in the risk of developing total difficulties in young individuals. The joint effect of GS and BS may also contribute to the decrease in EBPs.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Diego Ruiz-Sobremazas, Mario Ruiz Coca, Miguel Morales-Navas, Rocio Rodulfo-Cardenas, Caridad Lopez-Granero, Maria Teresa Colomina, Cristian Perez-Fernandez, Fernando Sanchez-Santed
Summary: Air pollution is associated with a range of health issues and gestational exposure to environmental pollutants may be linked to neurodevelopmental disorders. This study investigated the effects of oral gestational exposure to particulate matter (PM) on ultrasonic vocalizations (USV). The findings suggest that this exposure may lead to social deficits and abnormal gene expression related to neurotransmitter systems. Further research is needed to better understand the effects of air pollution on neurodevelopmental disorders and the neurotransmission systems involved.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Yagmur Kabakci, Sadiye Kosar, Ozgur Dogan, Fehmi Gorkem Uctug, Osman Atilla Arikan
Summary: This study investigated the effect of electrohydrolysis pretreatment on municipal solid waste. The results showed that applying electrohydrolysis pretreatment increased methane production and reduced the time required for hydrolysis, suggesting it is a promising method to improve anaerobic digestion efficiency.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Chuanwu Zhao, Yaozhong Pan, Hanyi Wu, Yu Zhu
Summary: This study analyzed the impact of industrial zones on urban heat islands using remote sensing images and a novel spectral index. The research found that the contraction or expansion of industrial zones has a significant effect on land surface temperature. The results are valuable for environmental assessment and fine management of industrial cities.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Bang Du, Zhongzhong Wang, Piet N. L. Lens, Xinmin Zhan, Guangxue Wu
Summary: This study investigated the performance, syntrophic relationships, microbial communities, and metabolic pathways of ethanol-fed reactors with different operational modes and solids retention times. The results showed that different microorganisms were enriched under different SRT conditions, and syntrophic bacteria related to methane production could be enriched under low SRT conditions.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Gokulan Ravindiran, Sivarethinamohan Rajamanickam, Muralikrishnan Ramalingam, Gasim Hayder, Balamurugan Karupaiya Sathaiah, Madhava Krishna Reddy Gaddam, Senthil Kumar Muniasamy, Priya Arunkumar
Summary: The present study investigated the sustainable approach for wastewater treatment using waste algal blooms. The biochar produced by the marine algae Ulva reticulata was used to remove chromium, nickel, and zinc from aqueous solutions. The study examined the adsorbents' properties and stability using SEM/EDX, FTIR, and XRD. The results showed that the biochar had high removal efficiency for the toxic metals, and the packed bed column effectively removed the heavy metal ions. The Thomas and Adams-Bohart models were found to best fit the regression values, and desorption studies were conducted to understand the sorption and elution processes.
ENVIRONMENTAL RESEARCH
(2024)
Review
Environmental Sciences
Vignesh Vinayagam, Kavitha Nagarasampatti Palani, Sudha Ganesh, Siddharth Rajesh, Vedha Varshini Akula, Ramapriyan Avoodaiappan, Omkar Singh Kushwaha, Arivalagan Pugazhendhi
Summary: The presence of pollutants in water contributes to global pollution and poses significant threats to humans and wildlife. Finding effective wastewater treatment techniques is crucial for reducing pollutant accumulation in the environment. This paper highlights recent advances in the electrochemical advanced oxidation method and other processes for treating pharmaceuticals, dyes, and pesticide-polluted effluents.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
M. M. M. Ahmed, Kai-Yue Chen, Fang-Yu Tsao, Yi-Cheng Hsieh, Yu-Ting Liu, Min Tzou
Summary: This study investigated the sorption of citric acid onto humic acid-iron hydr(o)xide coprecipitate (HAFHCP) and the reciprocal effects of citric acid and P sorption on HAFHCP. The results showed that citric acid could increase P availability and have an impact on P sorption.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Xibo Xu, Zeqiang Wang, Xiaoning Song, Wenjie Zhan, Shuting Yang
Summary: The selection of predictor variables is crucial in building a digital mapping model for potentially toxic elements (PTEs) in soil. Traditionally, spatial and spectral parameters have been used as predictor variables, but the temporal dimension is often overlooked. This study demonstrates the value of incorporating temporal indices in the model, leading to significant performance improvements. The temporal-spatial-spectral covariate combinations used in a random forest (RF) algorithm achieve satisfactory mapping accuracy and outperform other methods.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Yan Pei, Xun Liu, Mengbo Cao, Zijun Wang, Hongbing Yang
Summary: Heteroatom doping can reconfigure the electronic structure of heterogeneous catalysts, leading to the development of advanced oxidation water purification materials with superior performance and stability. In this study, a series of catalysts with different elemental doping were prepared using a simple and environmentally friendly method. The S-doped NiCo2O4 catalyst showed excellent catalytic performance for the removal of Tetracycline, with significantly increased kinetic constant and high oxidation and mineralization efficiency in a wide pH range. The degradation process was dominated by non-radical oxidation pathway after S doping, and the overall process moved towards low toxicity.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Srivalli Thimmarayan, Harshavardhan Mohan, Gaddapara Manasa, Karthi Natesan, Shanmugam Mahendran, Pavithra Muthukumar Sathya, Byung-Taek Oh, R. Ravi Kumar, Rangasamy Sigamani Gandhimathi, Arul Jayaprakash, Kamala-Kannan Seralathan
Summary: This study investigated the bacterial degradation of naphthalene (NPT) isolated from crude oil-contaminated soil. Bacillus sp. GN 3.4, a potential bacteria for NPT biodegradation, was isolated and the optimal conditions for NPT degradation were determined. The study suggests that Bacillus sp. GN 3.4 could potentially aid in bioremediation by eliminating NPT from the soil.
ENVIRONMENTAL RESEARCH
(2024)