Article
Astronomy & Astrophysics
Jeffrey P. P. Thayer, Zachary C. C. Waldron, Eric K. K. Sutton
Summary: The study investigates the mass density of the upper thermosphere during the declining phase of solar cycle 23. The day-to-night ratio (DNR) of thermosphere properties is used to evaluate the relative change between day and night. CHAMP observations, MSIS 2.0 output, and TIEGCM V2.0 simulations are analyzed to assess their response in DNR. CHAMP observations show that nightside densities decrease more significantly than dayside densities as solar flux decreases. MSIS 2.0 displays the same trend as CHAMP, while TIEGCM V2.0 shows an opposite trend. The sensitivity analysis reveals differences in temperature and mean molecular weight between the two models.
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
(2023)
Article
Engineering, Civil
Joshua J. Soper, Christian D. Guzman, Emily Kumpel, John E. Tobiason
Summary: Road salt pollution significantly impacts chloride loading in reservoirs and watersheds, requiring long-term monitoring for water quality assessment.
JOURNAL OF HYDROLOGY
(2021)
Article
Environmental Sciences
Jinsong Lin, Yanfeng Wang, Haidong Pan, Zexun Wei, Tengfei Xu
Summary: Air-sea heat flux is crucial for ocean circulation, weather, and climate. Satellite remote sensing, particularly the Cyclone Global Navigation Satellite System (CYGNSS), is used to estimate turbulent heat fluxes. High uncertainty is found near the equator in the western Pacific Ocean, Arabian Sea, Bay of Bengal, and Gulf of Guinea.
Article
Environmental Sciences
Osman Miah, Avik Roy, Abid Azad Sakib, Nahin Mostofa Niloy, Md. Morshedul Haque, Mashura Shammi, Shafi M. Tareq
Summary: This study aimed to assess the pollution and dynamics of pCO2 and CO2 degassing flux in tropical lakes in relation to FDOM. Results showed that lake water was supersaturated with CO2 in both wet and dry seasons, with higher pCO2 levels in the wet season due to organic matter inputs from watersheds and CO2 inputs from soils or wetlands. The analysis of FDOM components revealed inputs from both terrestrial and plankton sources, and pCO2 levels were negatively correlated with FDOM and DO concentrations.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Megan L. Fork, Jerker B. Fick, Alexander J. Reisinger, Emma J. Rosi
Summary: The study on pharmaceuticals in an urban stream network in Baltimore, MD, USA, revealed higher concentrations and more compounds in streams with higher population densities. Annual pharmaceutical loads at the watershed outlet ranged from less than 1 kg to around 15 kg, equivalent to tens of thousands of human doses. Pharmaceuticals are mainly released to surface waters through leaking sewage and treated wastewater effluent pathways, with varying importance among different compounds.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Ben M. Pelto, Brian Menounos
Summary: Estimating annual surface mass balance between flux-gates using the continuity equation is viable, with relatively small average mean error, but large mean absolute error and average modeled mass-balance uncertainty. The method yields comparable gradients to direct measurements, but caution is needed when interpreting individual flux-bin mass balances due to large residuals.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Plant Sciences
Qingfeng Song, Jeroen Van Rie, Bart Den Boer, Alexander Galle, Honglong Zhao, Tiangen Chang, Zhonghu He, Xin-Guang Zhu
Summary: Improving canopy photosynthetic light use efficiency and energy conversion efficiency is crucial for increasing crop yield potential. However, the diurnal and seasonal variations of canopy light use efficiency and energy conversion efficiency have been largely unknown. This study quantified the dynamic changes in these parameters and found significant variations throughout the day and growing season. The results highlight the opportunity to improve canopy photosynthesis for greater wheat biomass and yield potential.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Water Resources
C. Z. Ngubo, M. Demlie, S. Lorentz
Summary: This study investigates the impacts of Acacia mearnsii plantations on hydrological processes, including groundwater, in the Two-Streams catchment in South Africa. The results show that while direct groundwater uptake by trees is not possible due to limiting root depths, the tree stands do have a clear impact on groundwater levels and baseflow. These impacts, observed in terms of reductions in groundwater recharge and subsequent decrease in levels and baseflow, start to become apparent on average six years after planting.
JOURNAL OF HYDROLOGY-REGIONAL STUDIES
(2022)
Article
Environmental Sciences
Tingting Fan, Tao Long, Yuanyuan Lu, Lu Yang, Na Mi, Feiyang Xia, Xiaohan Wang, Shaopo Deng, Qinghua Hu, Fuwang Zhang
Summary: Heavy metal pollution of agricultural soil, especially Cd, is a global threat to food safety and human health. Analyzing the fluxes of Cd through different pathways can help predict Cd content changes, identify critical pathways, and develop effective management strategies. Atmospheric deposition is the dominant input pathway, and irrigation and livestock manure also contribute significantly in China. Crop harvesting and leaching play important roles as output pathways in China, while leaching is the dominant Cd output pathway in Europe.
Article
Plant Sciences
Kenshi Takahashi, Ayaka Sakabe, Wakana A. Azuma, Masayuki Itoh, Tomoya Imai, Yasuki Matsumura, Makiko Tateishi, Yoshiko Kosugi
Summary: This study explored the mechanism of methane emission from the stem surfaces of Alnus japonica in a riparian wetland. The researchers found that stem methane emission included a component dependent on sap flux for diurnal changes and a component independent of sap flux for background continuous emissions, with the contribution ratios of the two processes varying with the season. Root anatomy analysis indicated that the intercellular space of the cortex and empty xylem cells in fine roots played important roles in methane transport.
Article
Environmental Sciences
Colton Bentley, Tassiane Junqueira, Alice Dove, Bas Vriens
Summary: This study provides a comprehensive assessment of select metal loads in the Great Lakes basin, showing that biogeochemically reactive metals display highly variable source-sink behavior. Factors such as atmospheric inputs, tributary loads, and sedimentation all affect the concentrations and temporal trends of the studied metals, with potential implications for lake-wide metal budgets and water quality.
ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Bushra Tasnim, Jalil A. Jamily, Xing Fang, Yangen Zhou, Joel S. Hayworth
Summary: This study modified an hourly water quality model MINLAKE2018 for shallow lakes to simulate diurnal variations of water temperature and dissolved oxygen. The results showed that the hourly model performed better in simulating temperature and DO compared to the daily model MINLAKE2012.
Article
Environmental Sciences
Wojciech Gajek, Dominik Graeff, Sebastian Hellmann, Alan W. Rempel, Fabian Walter
Summary: Daily variations in seismic S-wave anisotropy reveal the dynamic response of englacial fractures to changing meltwater supply, which play a crucial role in controlling water routing to the base of ice sheets and influencing large-scale ice flow. Fractures, which dominate englacial water drainage, are shown to be highly dynamic and their volumes can change significantly over short time scales.
COMMUNICATIONS EARTH & ENVIRONMENT
(2021)
Article
Engineering, Environmental
Manhua Luo, Yan Zhang, Kai Xiao, Xuejing Wang, Xiaolang Zhang, Gang Li, Hailong Li
Summary: Driven by anthropogenic activities, eutrophication has become a global issue. This study analyzed radium isotopes and nutrient data to evaluate the influence of submarine groundwater discharge (SGD) on potential eutrophication in Liaodong Bay (LDB). The study found that groundwater had higher concentrations of dissolved inorganic nitrogen, phosphorous, and silicate compared to seawater and river water. The study also highlighted that SGD is a significant source of nutrients, contributing a large proportion of nutrient inputs to LDB.
Article
Environmental Sciences
Hao-Jun Lei, Bin Yang, Pu Ye, Yuan-Yuan Yang, Jian-Liang Zhao, You-Sheng Liu, Lingtian Xie, Guang-Guo Ying
Summary: The study investigated the occurrence and fate of 17 BZDs and their transformation products in 11 wastewater treatment plants in Guangdong province, China. The results showed varying removal efficiencies in different WWTPs, with the main removal mechanisms being sludge adsorption and biodegradation/biotransformation. The total usage and emission of BZDs in Guangdong province were estimated, with implications for further research on potential ecological risks.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Nadine Taube, Jianxun He, M. Cathryn Ryan, Caterina Valeo
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2016)
Article
Environmental Sciences
Shawn E. Loo, M. Cathryn Ryan, Bernie J. Zebarth, Shawn H. Kuchta, Denise Neilsen, Bernhard Mayer
JOURNAL OF ENVIRONMENTAL QUALITY
(2017)
Article
Environmental Sciences
Hongbin Gao, M. Cathryn Ryan, Changyou Li, Biao Sun
Article
Water Resources
Jennette Baker, Stephen E. Grasby, M. Cathryn Ryan
CANADIAN WATER RESOURCES JOURNAL
(2018)
Article
Environmental Sciences
Farzin Malekani, M. Cathryn Ryan, Bernie J. Zebarth, Shawn E. Loo, Martin Suchy, Edwin E. Cey
JOURNAL OF ENVIRONMENTAL QUALITY
(2018)
Article
Environmental Sciences
J. M. Abboud, M. C. Ryan, G. D. Osborn
JOURNAL OF FLOOD RISK MANAGEMENT
(2018)
Article
Microbiology
Alexander J. Probst, Bethany Ladd, Jessica K. Jarett, David E. Geller-McGrath, Christian M. K. Sieber, Joanne B. Emerson, Karthik Anantharaman, Brian C. Thomas, Rex R. Malmstrom, Michaela Stieglmeier, Andreas Klingl, Tanja Woyke, M. Cathryn Ryan, Jillian F. Banfield
NATURE MICROBIOLOGY
(2018)
Article
Ecology
Dongnan Zhu, M. Cathryn Ryan, Hongbin Gao
ECOLOGICAL ENGINEERING
(2019)
Article
Water Resources
Eowyn M. S. Campbell, Igor Pavlovskii, M. Cathryn Ryan
HYDROLOGICAL PROCESSES
(2020)
Article
Environmental Sciences
Ricardo Hirata, Fabiana Cagnon, Aline Bernice, Carlos Henrique Maldaner, Paulo Galvao, Carlos Marques, Rafael Terada, Claudia Varnier, M. Cathryn Ryan, Reginaldo Bertolo
Article
Geochemistry & Geophysics
Eowyn M. S. Campbell, Patrick A. Lagasca, Sofija Stanic, Yuan Zhang, M. Cathryn Ryan
Summary: In a mountain river in Alberta, Canada, three subsurface end-member sources were identified, with interflow dominating river discharge during the study period. Contributions from siliciclastic and carbonate aquifers varied annually and seasonally, suggesting variability in water sources. Short residence times and significant variability in streamflow provenance indicate that this river will be rapidly affected by climate change.
APPLIED GEOCHEMISTRY
(2021)
Article
Environmental Sciences
N. A. Fleming, T. A. Morais, K. U. Mayer, M. C. Ryan
Summary: The failure of well integrity can lead to the migration of natural gas, resulting in atmospheric greenhouse gas emissions and impacts on groundwater quality. This study found that gas emissions were mainly concentrated around the wellhead, influenced by various meteorological factors, while gas migration near the wellhead was primarily advective displacement.
ATMOSPHERIC POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Eowyn M. S. Campbell, M. Cathryn Ryan
Summary: The study shows that the majority of winter streamflow in a third-order eastern slopes tributary is generated from high-elevation snowpack melting and transmitted through carbonate and siliciclastic aquifers. It also reveals the different roles of precipitation at varying elevations and temperatures in generating baseflow.
Article
Geochemistry & Geophysics
Patrick A. Lagasca, M. Cathryn Ryan, Laurence R. Bentley
Summary: Geophysical imaging was used to characterize the distribution of subsurface FPG surrounding Crystal Geyser, revealing the presence of a FPG plume located between the conduit of the geyser and the Little Grand Wash Fault. FPG accumulates within the Slick Rock Member and leaks to the ground surface through high permeability pathways.
Article
Water Resources
Yixuan Zhou, Cuauhtemoc Tonatiuh Vidrio-Sahagun, M. Cathryn Ryan, Jianxun He
Summary: The Elbow River in Alberta, Canada, has experienced significant increases in flow and precipitation from 1979 to 2015. These changes may alleviate water supply shortages but could also lead to increased flood magnitudes. Different sub-watersheds contribute varying flow volumes during the high-flow season.
CANADIAN WATER RESOURCES JOURNAL
(2022)
Article
Environmental Sciences
Toshimi Nakajima, Mao Kuragano, Makoto Yamada, Ryo Sugimoto
Summary: This study compared the contribution of submarine groundwater discharge (SGD) to river nutrient budgets at nearshore and embayment scales, and found that SGD-derived nutrients become more important at larger spatial scales.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Fan Liu, Lei Zhang, Chongyang Zhang, Ziguang Chen, Jingguang Li
Summary: NO2 emissions from wall-mounted gas stoves used for household heating have become a significant source of indoor pollution in Chinese urban areas. The high indoor concentration of NO2 poses potential health risks to residents. It is urgently necessary to establish relevant regulations and implement emission reduction technologies to reduce NO2 emissions from wall-mounted gas stoves.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Letter
Environmental Sciences
Hans Peter H. Arp, Raoul Wolf, Sarah E. Hale, Sivani Baskaran, Juliane Gluege, Martin Scheringer, Xenia Trier, Ian T. Cousins, Harrie Timmer, Roberta Hofman-Caris, Anna Lennquist, Andre D. Bannink, Gerard J. Stroomberg, Rosa M. A. Sjerps, Rosa Montes, Rosario Rodil, Jose Benito Quintana, Daniel Zahn, Herve Gallard, Tobias Mohr, Ivo Schliebner, Michael Neumann
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Philomina Onyedikachi Peter, Binessi Edouard Ifon, Francois Nkinahamira, Kayode Hassan Lasisi, Jiangwei Li, Anyi Hu, Chang-Ping Yu
Summary: This study investigates the relationship between dissolved organic matter (DOM) and Rare Earth Elements (REEs) in sediments from Yundang Lagoon, China. The results show four distinct fluorescent components, with protein-like substances being the most prevalent. Additionally, the total fluorescence intensity and LREE concentrations exhibit a synchronized increase from Outer to Inner to Songbai Lake core sediments. The findings demonstrate a strong correlation between DOM content and pollution levels.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Surya Gupta, Pasquale Borrelli, Panos Panagos, Christine Alewell
Summary: The objective of this study is to incorporate soil hydraulic properties into the erodibility factor (K) of USLE-type models. By modifying and improving the existing equations for soil texture and permeability, the study successfully included information on saturated hydraulic conductivity (Ksat) into the calculation of K factor. Using the Random Forest machine learning algorithm, two independent K factor maps with different spatial resolutions were generated. The results show that the decrease in K factor values has a positive impact on the modeling of soil erosion rates.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Jesmin Akter, Wendy J. M. Smith, Yawen Liu, Ilho Kim, Stuart L. Simpson, Phong Thai, Asja Korajkic, Warish Ahmed
Summary: The choice of workflow in wastewater surveillance has a significant impact on SARS-CoV-2 concentrations, while having minimal effects on HF183 and no effect on HAdV 40/41 concentrations. Certain components in the workflow can be interchangeable, but factors such as buffer type, chloroform, and homogenization speed can affect the recovery of viruses and bacteria.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Yu Luo, Xueting Yang, Diwei Wang, Hongmei Xu, Hongai Zhang, Shasha Huang, Qiyuan Wang, Ningning Zhang, Junji Cao, Zhenxing Shen
Summary: Atmospheric PM2.5, which can generate reactive oxygen species (ROS), is associated with cardiorespiratory morbidity and mortality. The study found that both the mass concentration of PM2.5 and the DTT activity were higher during the heating season than during the nonheating season. Combustion sources were the primary contributors to DTT activity during the heating season, while secondary formation dominated during the nonheating season. The study also revealed that biomass burning had the highest inherent oxidation potential among all sources investigated.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Erin L. Murphy, Leah R. Gerber, Chelsea M. Rochman, Beth Polidoro
Summary: Plastic pollution has devastating consequences for marine organisms. This study uses a trait-based framework to develop a vulnerability index for marine mammals, seabirds, and sea turtles in Hawai'i. The index ranks 63 study species based on their vulnerability to macroplastic pollution, providing valuable information for species monitoring and management priorities.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Kenji Maurice, Amelia Bourceret, Sami Youssef, Stephane Boivin, Liam Laurent-Webb, Coraline Damasio, Hassan Boukcim, Marc-Andre Selosse, Marc Ducousso
Summary: Growing pressure from climate change and agricultural land use is destabilizing soil microbial community interactions. Little is known about microbial community resistance and adaptation to disturbances, hindering our understanding of recovery latency and implications for ecosystem functioning. This study found that anthropic disturbance and natural disturbance have different effects on the topology and stability of soil microbial networks.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Yunhao Li, Yali Feng, Haoran Li, Yisong Yao, Chenglong Xu, Jinrong Ju, Ruiyu Ma, Haoyu Wang, Shiwei Jiang
Summary: Deep-sea mining poses a serious threat to marine ecosystems and human health by disturbing sediment and transmitting metal ions through the food chain. This study developed a new regenerative adsorption material, OMN@SA, which effectively removes metal ions. The adsorption mechanism and performance of the material for metal ion fixation were investigated.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Antonio Medici, Margherita Lavorgna, Marina Isidori, Chiara Russo, Elena Orlo, Giovanni Luongo, Giovanni Di Fabio, Armando Zarrelli
Summary: Valsartan, a widely used antihypertensive drug, has been detected in high concentrations in surface waters due to its unchanged excretion and incomplete degradation in wastewater treatment plants. This study investigated the degradation of valsartan and identified 14 degradation byproducts. The acute and chronic toxicity of these byproducts were evaluated in key organisms in the freshwater trophic chain.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Jiang Lin, Lianbao Chi, Qing Yuan, Busu Li, Mingbao Feng
Summary: This study investigated the photodegradation behavior and product formation of two representative pharmaceuticals in simulated estuary water. The study found that the formed transformation products of these pharmaceuticals have potential toxicity on marine organisms, including oxidative stress and damage to cellular components.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Hua Fang, Dongdong Jiang, Ye He, Siyi Wu, Yuehong Li, Ziqi Zhang, Haoting Chen, Zixin Zheng, Yan Sun, Wenxiang Wang
Summary: This study revealed that exposure to lower levels of air pollutants led to decreased pregnancy rates, with PM10, NO2, SO2, and CO emerging as the four most prominent pollutants. Individuals aged 35 and above exhibited heightened susceptibility to pollutants.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Ali Shaan Manzoor Ghumman, Rashid Shamsuddin, Amin Abbasi, Mohaira Ahmad, Yoshiaki Yoshida, Abdul Sami, Hamad Almohamadi
Summary: In this study, inverse vulcanized polysulfides (IVP) were synthesized by reacting molten sulfur with 4-vinyl benzyl chloride, and then functionalized using N-methyl D-glucamine (NMDG). The functionalized IVP showed a high mercury adsorption capacity and a machine learning model was developed to predict the amount of mercury removed. Furthermore, the functionalized IVP can be regenerated and reused, providing a sustainable and cost-effective adsorbent.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Rita Bonfiglio, Renata Sisto, Stefano Casciardi, Valeria Palumbo, Maria Paola Scioli, Erica Giacobbi, Francesca Servadei, Gerry Melino, Alessandro Mauriello, Manuel Scimeca
Summary: This study investigated the presence of aluminum in human colon cancer samples and its potential association with biological processes involved in cancer progression. Aluminum was found in tumor areas of 24% of patients and was associated with epithelial to mesenchymal transition (EMT) and cell death. Additional analyses revealed higher tumor mutational burden and mutations in genes related to EMT and apoptosis in aluminum-positive colon cancers. Understanding the molecular mechanisms of aluminum toxicity may improve strategies for the management of colon cancer patients.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)