Article
Environmental Sciences
Hyejung Jung, Yun S. Kim, Jisu Yoo, So Jeong Han, Jeonghoon Lee
Summary: Stable nitrate isotopes and stable water isotopes were used to identify nitrogen sources and N-biogeochemical transformation in tap water sources from 11 water purification plants in South Korea. The land use type in the water supply basins influenced the contribution of different nitrogen sources and exhibited large seasonal and spatial differences. Understanding the isotope fractionation due to N-biogeochemical transformation is important for interpreting the origin and fate of NO3-. The findings provide a basis for N source control strategies to ensure tap water quality in complex land use areas.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Efstratios Kelepertzis, Ioannis Matiatos, Fotini Botsou, Christina Antonopoulou, Ioannis Lappas, Elissavet Dotsika, Vladislav Chrastny, Pascal Boeckx, Sotirios Karavoltsos, Michael Komarek
Summary: The Atalanti basin in central Greece is facing groundwater quality deterioration threats due to both natural and human-induced contamination sources. This study used a combination of statistical and hydrogeochemical techniques, as well as stable isotope compositions, to investigate the origin of salinity and nitrate contamination. The findings showed that irrigation return flow and marine aerosols were the main contributors to high salinity, while fertilizers and sewage waste were the dominant sources of nitrate. The study also revealed the influence of redox conditions on the biogeochemical transformations of nitrogen species and the mobilization of chromium (VI).
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Civil
Mahmoud M. Khalil, Tomochika Tokunaga, Essam Heggy, Abotalib Z. Abotalib
Summary: The impact of migration of urban, agricultural, and industrial activities to the desert fringes of the Nile Delta triggered changes in land cover/land use, introducing new recharge sources to groundwater mixing dynamics. This study integrated remote sensing, chemical, and isotopic data with multivariate statistical analysis to identify groundwater sources and mixing dynamics in response to LCLU changes. The findings provide a good basis for further studies on groundwater mixing and contamination assessment in shallow aquifers under stress from LCLU changes in hyper-arid environments.
JOURNAL OF HYDROLOGY
(2021)
Article
Engineering, Environmental
Xiaoqian Niu, Xiaoxu Jia, Xiaofan Yang, Jiao Wang, Xiaorong Wei, Lianhai Wu, Mingan Shao
Summary: Excess nitrate loading in the groundwater of the Guanzhong Plain in the Yellow River Basin of China poses significant environmental and health risks. The sources of nitrate are mainly manure and sewage, as well as chemical nitrogen fertilizers. The transition from croplands to orchards has exacerbated nitrate accumulation in the vadose zone. The residence time of nitrate in the vadose zone varies, but in areas with thin vadose zone or recent chemical nitrogen fertilizer loading, nitrate might reach the aquifer in the near future.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Environmental Sciences
Jiaheng Yan, Jiansheng Chen, Wenqing Zhang
Summary: The utilization and development of land resources affect groundwater quality. Land use has complex relationships with groundwater chemical composition, which are influenced by the buffer zone scale. Cropland has the greatest impact on groundwater hydrochemistry in the city, while the transformation of saline-alkaline land to cropland inhibits salt accumulation. Analysis and principal component analysis emphasize the deterioration of groundwater quality due to agricultural pollution.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Dugin Kaown, Eun-Hee Koh, Bernhard Mayer, YeoJin Ju, Jaeyeon Kim, Hye-Lim Lee, Seong-Sun Lee, Dong Kyu Park, Kang-Kun Lee
Summary: The study conducted in Hwaseong, South Korea, used hydrogeochemical and multiple isotope data to differentiate between anthropogenic and natural contaminant sources in a coastal aquifer, highlighting risks of seawater intrusion and high anthropogenic nitrogen inputs. By distinguishing between different sources of contamination, effective groundwater quality control measures can be implemented to mitigate the impacts of pollution on the groundwater system.
ENVIRONMENTAL POLLUTION
(2021)
Article
Environmental Sciences
Sri Adiyanti, Yasuyuki Maruya, Bradley D. Eyre, Perrine Mangion, Jeffrey Turner, Mathew R. Hipsey
Summary: This study demonstrates the successful allocation of nitrogen sources during wet periods by measuring the dual stable isotopes of nitrate in conjunction with routine nitrogen concentration data. The main land use exporting nitrogen during high rainfall periods was wetland, with reduced uncertainty in calculated rates when using dual isotopes.
WATER RESOURCES RESEARCH
(2022)
Article
Environmental Sciences
Xing Li, Y. Jun Xu, Maofei Ni, Chunlin Wang, Siyue Li
Summary: This study reveals the spatio-temporal variations of nitrate sources and transformations in a mixed land use/land cover catchment. It suggests that point sources dominate nitrate in the summer and winter, while non-point sources dominate in the spring and autumn. The increase in urban areas leads to an increase in nitrate concentrations from domestic sewage, and both urban and agricultural inputs should be considered in nitrate pollution management.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Ioannis Matiatos, Konstantinos Lazogiannis, Anastasios Papadopoulos, Nikolaos Th. Skoulikidis, Pascal Boeckx, Elias Dimitriou
Summary: The Pinios River Basin in Greece is heavily cultivated and faces nitrate pollution from organic sources, masking the impact of synthetic fertilizers. Nitrate concentrations do not exceed drinking water thresholds but the water quality status is generally poor or bad due to the potential impact on aquatic biological communities. The isotopic composition of nitrates shows the contribution of organic pollution from industries, animal breeding facilities, and manure fertilizers.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Ping Zhang, Xiao-Dan Wang, Fu-Jun Yue, Sai-Nan Chen, Zi-Han Liu, Meng Lu, Zhi-Yu Shi
Summary: With the widespread use of nitrogen fertilizers in the agricultural sector, there is an increasing pollution of nitrogen in the karst area of southwest China. This study used isotopic techniques to investigate the changes and sources of nitrates during rainfall in different land uses in a typical karst catchment. The results showed that agricultural activities caused water quality deterioration, while heavy rainfall during the wet season played a positive role in promoting it. Nitrate isotopic compositions revealed that dryland and paddy field were mainly affected by nitrification, and source analysis showed that chemical fertilizers and manure were dominant in dryland and paddy field, while precipitation and soil organic nitrogen were major sources in abandoned land, forest, and shrub.
ENVIRONMENTAL EARTH SCIENCES
(2023)
Article
Engineering, Civil
Yingxue Xuan, Guangli Liu, Yizhang Zhang, Yingjie Cao
Summary: River nitrate pollution is a global issue, with inputs from synthetic fertilizers, soil nitrogen, and domestic sewage contributing significantly. The study in the Beijiang River basin showed that external nitrate sources were the main cause of increased nitrate concentrations, while urbanization led to higher contributions of domestic sewage and increased nitrate pollution in mixed land use watersheds. Land use patterns play a crucial role in nitrate pollution management strategies.
JOURNAL OF HYDROLOGY
(2022)
Article
Agronomy
Jingbo Gao, Zhiqin Li, Zhujun Chen, Yang Zhou, Weiguo Liu, Lei Wang, Jianbin Zhou
Summary: This study compared the effects of different intensive land uses on groundwater quality in the Yujiahe catchment in Shaanxi, China, highlighting the significant impact of orchard intensive land use on groundwater quality at a small catchment scale.
AGRICULTURAL WATER MANAGEMENT
(2021)
Article
Geochemistry & Geophysics
Imali Kaushalya Herath, Guitao Shi, Qian Zhao, Yilan Li, Danhe Wang, Su Jiang, Yangjie Li, Zhenlou Chen, Roberto Bargagli
Summary: This study analyzed the sources and cycling of nitrate (NO3-) in Antarctic soils. The research found that NO3- concentrations and isotopic values were consistent across the latitudinal gradient, with the majority of NO3- derived from nitrification process. Atmospheric deposition contributed minimally to the NO3- budget, and there was evidence of denitrification and cycling between NO3- and nitrite (NO2-). These findings provide new insights into the nitrogen cycle in Antarctic terrestrial ecosystems.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2023)
Article
Environmental Sciences
Zhengjie Li, Wendell W. Walters, Meredith G. Hastings, Linlin Song, Shaonan Huang, Feifei Zhu, Dongwei Liu, Guitao Shi, Yilan Li, Yunting Fang
Summary: This study compares the oxygen stable isotope composition of atmospheric nitrate in urban and rural areas and reveals different anthropogenic effects on nitrate formation processes on spatial and temporal scales, illustrating different responses of reactive nitrogen chemistry to changes in human activities.
ENVIRONMENTAL POLLUTION
(2022)
Article
Engineering, Civil
Wenbo Zheng, Shiqin Wang
Summary: This study identified diffused nitrate sources in groundwater in headwater areas with diverse land-uses, multiple inputs, and intensification of precipitation. The research found that extreme precipitation accelerated anthropogenetic activities contributing to nitrate in groundwater, and the sources of nitrate varied among different land-uses.
JOURNAL OF HYDROLOGY
(2021)
Article
Water Resources
H. Hemmerle, R. van Geldern, T. R. Juhlke, F. Huneau, E. Garel, S. Santoni, J. A. C. Barth
Summary: Quantification of the isotope altitude effect from precipitation allows the identification of recharge altitudes in high-relief areas. However, steep terrains often limit the use of this method. River-based sampling can provide a solution by using mean upstream catchment elevation to establish altitude isotope effect, which was verified using precipitation isotope data and can potentially be applied in regions where elevation-based precipitation sampling is challenging.
HYDROLOGICAL SCIENCES JOURNAL-JOURNAL DES SCIENCES HYDROLOGIQUES
(2021)
Article
Environmental Sciences
Elisangela Heiderscheidt, Axumawit Tesfamariam, Hannu Marttila, Heini Postila, Stefano Zilio, Pekka M. Rossi
Summary: The utilization of stable water isotopes as tracer substances for groundwater infiltration detection in cold climate conditions proved to be effective, providing reliable results in origin identification and quantification of infiltration rates.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Multidisciplinary Sciences
John L. Wilkinson, Alistair B. A. Boxall, Dana W. Kolpin, Kenneth M. Y. Leung, Racliffe W. S. Lai, Cristobal Galban-Malagon, Aiko D. Adell, Julie Mondon, Marc Metian, Robert A. Marchant, Alejandra Bouzas-Monroy, Aida Cuni-Sanchez, Anja Coors, Pedro Carriquiriborde, Macarena Rojo, Chris Gordon, Magdalena Cara, Monique Moermond, Thais Luarte, Vahagn Petrosyan, Yekaterina Perikhanyan, Clare S. Mahon, Christopher J. McGurk, Thilo Hofmann, Tapos Kormoker, Volga Iniguez, Jessica Guzman-Otazo, Jean L. Tavares, Francisco Gildasio De Figueiredo, Maria T. P. Razzolini, Victorien Dougnon, Gildas Gbaguidi, Oumar Traore, Jules M. Blais, Linda E. Kimpe, Michelle Wong, Donald Wong, Romaric Ntchantcho, Jaime Pizarro, Guang-Guo Ying, Chang-Er Chen, Martha Paez, Jina Martinez-Lara, Jean-Paul Otamonga, John Pote, Suspense A. Ifo, Penelope Wilson, Nikolina Udikovic-Kolic, Milena Milakovic, Despo Fatta-Kassinos, Lida Ioannou-Ttofa, Jan Vymazal, Bayable A. Kassa, Jeanne Garric, Arnaud Chaumot, Peter Gibba, Ilia Kunchulia, Sven Seidensticker, Gerasimos Lyberatos, Halldor P. Halldorsson, Molly Melling, Thatikonda Shashidhar, Manisha Lamba, Anindrya Nastiti, Adee Supriatin, Nima Pourang, Ali Abedini, Omar Abdullah, Salem S. Gharbia, Francesco Pilla, Benny Chefetz, Tom Topaz, Koffi Marcellin Yao, Bakhyt Aubakirova, Raikhan Beisenova, Lydia Olaka, Jemimah K. Mulu, Peter Chatanga, Victor Ntuli, Nathaniel T. Blama, Sheck Sherif, Ahmad Zaharin Aris, Ley Juen Looi, Mahamoudane Niang, Seydou T. Traore, Rik Oldenkamp, Olatayo Ogunbanwo, Muhammad Ashfaq, Muhammad Iqbal, Ziad Abdeen, Aaron O'Dea, Jorge Manuel Morales-Saldana, Heidi de la Cruz, Ian Navarrete, Fabio Carvalho, Alhaji Brima Gogra, Bashiru M. Koroma, Vesna Cerkvenik-Flajs, Mitja Gombac, Melusi Thwala, Kyungho Choi, Habyeong Kang, John L. Celestino Ladu, Andreu Rico, Priyanie Amerasinghe, Anna Sobek, Gisela Horlitz, Armin K. Zenker, Alex C. King, Jheng-Jie Jiang, Rebecca Kariuki, Madaka Tumbo, Ulas Tezel, Turgut T. Onay, Julius B. Lejju, Yuliya Vystavna, Yuriy Vergeles, Horacio Heinzen, Andres Perez-Parada, Douglas B. Sims, Maritza Figy, David Good, Charles Teta
Summary: Environmental exposure to active pharmaceutical ingredients (APIs) can have negative effects on ecosystems and human health. A global-scale study of API pollution in rivers highlights the highest concentrations in sub-Saharan Africa, south Asia, and South America, primarily in low- to middle-income countries with poor wastewater and waste management infrastructure. The most frequently detected APIs include carbamazepine, metformin, and caffeine, with some concentrations exceeding safe levels for aquatic organisms. Pharmaceutical pollution poses a global threat to environmental and human health and has implications for achieving the United Nations Sustainable Development Goals.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Ecology
Alexandra Mattei, Frederic Huneau, Emilie Garel, Laurent Sorba, Sophie Orsini, Sebastien Santoni
Summary: The lack of hydrological considerations in existing protection statutes for small temporary wetlands has recently been pointed out as the main cause of their disappearance. Here, by combining physical and isotopes measurements, we first highlight the main role played by groundwater in the flooding phase of the temporary pond and the involvement of different water reservoirs in varying proportions over time to maintain the pond filled. These results demonstrate the connection existing between a geographically isolated wetland and the regional groundwater and highlight the urgent need to consider both surface and groundwater fluxes in specific protection statutes for wetlands.
Article
Water Resources
Feifei Cao, Jessy Jaunat, Frederic Huneau, Philippe Negrel, Emilie Garel, Alexandra Mattei, Helene Celle, Patrick Ollivier
Summary: The objectives of this study were to characterize the input signal and mineralization processes of a shallow carbonate aquifer in northeastern France by analyzing the chemical and isotopic composition of rain and groundwater. The results showed that groundwater isotopic signatures were similar to the local meteoric water line and were influenced by the buffer effect of the chalk aquifer. However, intensive fracture networks at local scale could lead to rapid aquifer response to rainfall.
HYDROLOGICAL SCIENCES JOURNAL
(2022)
Article
Water Resources
Nils-Otto Kitterod, Jens Kvaerner, Per Aagaard, Jurga Arustien, Janis Biks, Atle Dagestad, Pal Gundersen, Birgitte Hansen, Arni Hjartarson, Enn Karro, Maris Klavins, Andres Marandi, Rasa Radien, Inga Retike, Pekka M. Rossi, Laerke Thorling
Summary: Groundwater utilization and quality vary in the Baltic and Nordic countries due to geological differences. Most groundwater comes from Quaternary deposits, but Denmark and the Baltic countries also have important resources in Phanerozoic rocks. Groundwater quality is influenced by residence time and geological composition.
HYDROLOGY RESEARCH
(2022)
Article
Environmental Sciences
Diane Odeloui, Bertil Nlend, Frederic Huneau, Helene Celle, Emilie Garel, Abdoukarim Alassane, Moussa Boukari, Gedeon Sambienou
Summary: This study investigates the threats, hydrogeological characteristics, and groundwater level changes along the West-African coast. The results highlight the importance of protecting groundwater resources and ensuring sustainable and healthy groundwater exploitation in the face of contamination from human activities, saltwater intrusion, and climate change.
Editorial Material
Chemistry, Inorganic & Nuclear
Yuliya Vystavna, Johannes Cullmann, Keith Hipel, Jodie Miller, David X. Soto, Astrid Harjung, Andrew Watson, Alexandra Mattei, Seifu Kebede, Maksym Gusyev
ISOTOPES IN ENVIRONMENTAL AND HEALTH STUDIES
(2022)
Article
Ecology
Christina M. Schubert, Tobias R. Juhlke, Frederic Huneau, Emilie Garel, Sebastien Santoni, Johannes A. C. Barth, Robert van Geldern
Summary: The current research on carbon cycling in inland waters lacks understanding of carbon outgassing from small streams, resulting in underestimation of their contribution to global carbon transfer budgets. This study examined a mountain river in Corsica, France, to investigate carbon sources and sinks. The results showed that the river had low DIC content and high δC-13(DIC) values at the source, which decreased downstream due to soil respiration. The river acted as a weak to medium source of CO2 to the atmosphere annually, although headwater parts temporarily acted as CO2 sinks.
Article
Engineering, Civil
B. Nlend, F. Huneau, E. Garel, S. Santoni, A. Mattei
Summary: This study aims to understand the factors influencing the spatial and temporal changes of isotopes content in rainfall over a region with complex topography and aerology. Using regression analysis, isoscapes were constructed for different months based on the precipitation isotope, climatic, and topographic data. The results reveal the controlling effect of altitude and slope on the precipitation isotopes content, with partial influence from meteorological settings. Additionally, the influence of precipitation types on the isotopic composition of rainwater in the study region was hypothesized for the first time.
JOURNAL OF HYDROLOGY
(2023)
Article
Environmental Sciences
Vadim Yapiyev, Pekka M. Rossi, Pertti Ala-Aho, Hannu Marttila
Summary: Groundwater in shallow aquifers used for community water supply in cold climates is vulnerable to contamination from land-use and surface water intrusion. This study used stable water isotopes data, precipitation data, Geographic Information System analysis, and multivariate statistics to assess surface water intrusion risks and recharge conditions in Northern Finland. The results showed that warm season precipitation contributes to about 60% of the annual precipitation, and the aquifers have a mixture of warm and cold season precipitation. The use of stable water isotopes with lc-excess is a useful approach for assessing recharge and contamination risks in water management.
WATER RESOURCES RESEARCH
(2023)
Article
Environmental Sciences
Kevin J. Lyons, Jenni Ikonen, Anna-Maria Hokajarvi, Teemu Rasanen, Tarja Pitkanen, Ari Kauppinen, Katharina Kujala, Pekka M. Rossi, Ilkka T. Miettinen
Summary: Groundwater quality monitoring often relies on sporadic and slow manual sampling and laboratory analyses, which may result in undetected water quality deficiencies. In Finland, enhanced monitoring of untreated groundwater quality using real-time online monitoring, isotopic analysis, and microbial community analysis revealed indications of surface water intrusion and faecal contamination. The findings demonstrated the usefulness of supplementary methods and suggested their wider implementation to enhance groundwater quality monitoring.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Forestry
Martin Haeusser, Sugam Aryal, Johannes A. C. Barth, Joerg Bendix, Emilie Garel, Robert van Geldern, Frederic Huneau, Tobias R. Juhlke, Isabel Knerr, Sebastien Santoni, Sonja Szymczak, Katja Trachte, Achim Braeuning
Summary: Black pine and Maritime pine show different growth phenology with a 1-month delay for xylogenesis and increasing growth rates from low to high elevations. Investigating seasonal wood formation is crucial to understanding tree growth responses to climate impact.
TREES-STRUCTURE AND FUNCTION
(2023)
Article
Environmental Sciences
Lamine Boumaiza, Safouan Ben Ammar, Romain Chesnaux, Randy L. Stotler, Bernhard Mayer, Frederic Huneau, Karen H. Johannesson, Jana Levison, Kay Knoeller, Christine Stumpp
Summary: This study investigates the sources and transformation processes of nitrate (NO3) contamination in a typical Mediterranean coastal agricultural area in Tunisia using multiple isotopic tracers and a Bayesian isotope MixSIAR model. The results show that the measured NO3 concentrations in groundwater are above the natural baseline threshold, indicating anthropogenic influence. The isotopic analysis suggests that manure, soil organic matter, and sewage are the potential sources of NO3, with manure-derived NO3 being the dominant source. The study also reveals the occurrence of denitrification and nitrification in the groundwaters, reflecting the complexity of interactions within the coastal aquifer.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
E. Crayol, F. Huneau, E. Garel, A. Mattei, S. Santoni, V. Pasqualini, V. Re
Summary: This study proposes the addition of socio-economic data to hydrogeological investigations to identify pollution sources linked to human activities at a watershed scale. The research conducted in the Biguglia lagoon plain in France showed that both agricultural and domestic sources contribute to pollution in the water bodies. Socio-hydrogeological investigations proved to be an efficient tool to tackle anthropogenic pollution and protect Mediterranean groundwater-dependent ecosystems.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
