Article
Environmental Sciences
Nicholas E. Thiros, W. Payton Gardner, Kristopher L. Kuhlman
Summary: Non-uniqueness in groundwater model calibration poses uncertainties to predictions. This study explores the use of environmental tracer information in constraining groundwater model parameters, finding that utilizing tracer concentrations can reduce uncertainty and improve predictive accuracy. Direct assimilation of environmental tracer concentrations into model parameter estimation procedures shows potential benefits in calibrating groundwater models.
WATER RESOURCES RESEARCH
(2021)
Article
Geochemistry & Geophysics
Connor P. Newman, Katherine Walton-Day, Robert L. Runkel, Richard T. Wilkin
Summary: Contamination from acid mine drainage can have negative impacts on ecosystems and groundwater usability. This study investigated the remediation of a draining mine adit in Colorado, USA, and collected a diverse dataset to understand groundwater recharge, sulfide oxidation mechanisms, and the effects of remediation on the hydrologic and geochemical system. The findings provide valuable insights for similar investigations at abandoned mine sites.
APPLIED GEOCHEMISTRY
(2023)
Article
Water Resources
Devmi Kurukulasuriya, William Howcroft, Ellen Moon, Karina Meredith, Wendy Timms
Summary: Underground mining can impact groundwater systems and surface water connections. Environmental water tracers (EWTs) have been used to study these interactions, but there are challenges in practical application and interpretation. This paper reviews previous studies and discusses the opportunities and limitations of different EWTs.
MINE WATER AND THE ENVIRONMENT
(2022)
Article
Environmental Sciences
Yvonne Sena Akosua Loh, Obed Fiifi Fynn, Evans Manu, George Yamoah Afrifa, Millicent Obeng Addai, Bismark Awinbire Akurugu, Sandow Mark Yidana
Summary: This study utilized hydrochemical data and stable water isotopes to evaluate the relationship between surface water in Lake Bosumtwi and the underlying groundwater system. The results showed that there is no significant hydraulic connection between the two reservoirs, with groundwater mainly recharging from hilltops towards the lake.
ENVIRONMENTAL EARTH SCIENCES
(2022)
Article
Geosciences, Multidisciplinary
Chandler Noyes, Jihyun Kim, Mark Person, Lin Ma, Grant Ferguson, Jennifer C. McIntosh
Summary: The study in the Lisbon Valley of southeastern Utah investigates the hydraulic connectivity of a stacked aquifer system, showing distinct groupings and minimal hydraulic connection between the Burro Canyon Aquifer and Navajo Aquifer. Principal component analysis further contrasts groupings between the aquifers based on lithology, residence times, and redox conditions.
HYDROGEOLOGY JOURNAL
(2021)
Article
Environmental Sciences
Andreas Link, Leonard El-Hokayem, Muhammad Usman, Christopher Conrad, Robert Reinecke, Markus Berger, Yoshihide Wada, Vlad Coroama, Matthias Finkbeiner
Summary: This study aims to identify the potentials of groundwater-dependent ecosystems (GDEs) globally, using a screening analysis approach. Nine key indicators were defined to capture GDE potentials and associated risks. The results show that GDE potentials are widely distributed across the globe, with different distribution patterns depending on the type of ecosystem. The risks to GDEs from groundwater abstraction are more geographically limited and concentrated in certain regions.
ENVIRONMENTAL RESEARCH LETTERS
(2023)
Article
Geosciences, Multidisciplinary
Michael Schubert, Nils Michelsen, Axel Schmidt, Laura Eichenauer, Kay Knoeller, Alexander Arakelyan, Lilith Harutyunyan, Christoph Schueth
Summary: The Ararat Valley in Armenia is facing increasing stress on its groundwater resources due to growing water demand for irrigation and fish farming and decreasing groundwater recharge. Efforts towards more sustainable water management are necessary to address this issue. The study on the origin and age distribution of the valley's groundwater revealed varying groundwater ages and the presence of young groundwater vulnerable to contamination, emphasizing the importance of sustainable management efforts beyond the central part of the valley.
HYDROGEOLOGY JOURNAL
(2021)
Review
Environmental Sciences
Qiaohui Zhong, Jianying Qi, Juan Liu, Jin Wang, Ke Lin, Qi'en Ouyang, Xian Zhang, Xudong Wei, Tangfu Xiao, Ali El-Naggar, Joerg Rinklebe
Summary: This review summarizes the sources, characteristics and tracing methods of thallium pollution in the environment, and proposes further research directions and possible limitations for the application of thallium isotopes in environmental contamination.
ENVIRONMENT INTERNATIONAL
(2022)
Article
Environmental Sciences
Petra Bajak, Katalin Hegedus-Csondor, Mia Tiljander, Kirsti Korkka-Niemi, Heinz Surbeck, Balint Izsak, Marta Vargha, Akos Horvath, Tamas Pandics, Anita Eross
Summary: Lake Velence is experiencing deteriorating water level and quality due to factors such as climate changes and anthropogenic activities. The integration of the lake into the regional groundwater flow system reveals the importance of considering groundwater contribution and vulnerability in water management. Environmental tracers are used to study the groundwater inflow into the lake and identify the discharge points.
Article
Environmental Sciences
B. K. Okuhata, J. M. S. Delevaux, A. Richards Dona, C. M. Smith, V. L. Gibson, H. Dulai, A. I. El-Kadi, K. Stamoulis, K. M. Burnett, C. A. Wada, L. L. Bremer
Summary: Groundwater dependent ecosystems (GDEs) are crucial for sustainable groundwater management but are threatened by multiple environmental changes. This study uses a land-sea modeling framework to assess the impact of climate and land use change on submarine groundwater discharge (SGD) and habitat suitability for two macroalgae in nearshore GDEs in Hawai'i. The results show that protecting native forests can partially mitigate the decline in habitat suitability caused by climate and land use change, while reductions in SGD may favor the growth of an invasive macroalgae. This study highlights the importance of considering multiple drivers of environmental change on GDEs and informs management actions.
WATER RESOURCES RESEARCH
(2023)
Article
Geochemistry & Geophysics
J. A. Kidder, A. Voinot, M. Leybourne, D. Layton-Matthews, R. J. Bowell
Summary: This study utilized stable metal isotopes in groundwater to identify potential hydrogeochemical footprints in mineral exploration. By analyzing stable isotopes in the groundwater, it is possible to determine processes such as mineral dissolution, precipitation, and recharge pathways.
APPLIED GEOCHEMISTRY
(2021)
Article
Water Resources
Brian D. Smerdon, W. Payton Gardner
Summary: Synoptic sampling of three rivers is an efficient way to understand groundwater flow paths in a previously unstudied large area. Modelling groundwater discharge and mean age helps generate knowledge of groundwater circulation for a large area, which is useful for conceptual model development and future research.
HYDROLOGICAL PROCESSES
(2022)
Article
Water Resources
Brian D. Smerdon, W. Payton Gardner
Summary: Synoptic sampling of three rivers is an efficient way to gain understanding of groundwater flow paths, providing knowledge for developing conceptual models and future characterization efforts. Results suggest that benchland areas favored deeper groundwater circulation, while lower relief areas had shorter and shallower groundwater circulation.
HYDROLOGICAL PROCESSES
(2022)
Article
Engineering, Civil
Ishfaq Ahmad Pall, G. Jeelani, Jacob Noble
Summary: This study aimed to assess the groundwater discharge component of the hydrological budget of an urban Himalayan lake. Natural tracers, including radon, stable water isotopes, electrical conductivity, and water temperature, were used to identify potential groundwater discharge zones in the lake. The results showed temporal and spatial variation in groundwater discharge, with different proportions during high and low flow periods.
JOURNAL OF HYDROLOGY
(2023)
Article
Environmental Sciences
Chan Liu, Hu Liu, Yang Yu, Wenzhi Zhao, Zhao Zhang, Li Guo, Omer Yetemen
Summary: This study used remote sensing to map GDEs in Central Asia, with three validation methods confirming the accuracy of the results. The study found GDEs were concentrated around large lakes and in central Kazakhstan, accounting for 65.74% of total natural vegetation areas. At the watershed scale, the Sarysu Basin had the largest proportion of potential GDEs, while the Ysyk-Kol Basin had the lowest proportion. In conclusion, the remote sensing-based method shows potential for regional GDE mapping.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Bahar Jelovica, Hannu Marttila, Faisal Bin Ashraf, Bjorn Klove, Ali Torabi Haghighi
Summary: The negative impact of hydropower on river environment includes sudden changes in flow and habitat conditions. A probability-based model was developed to quantify the impact of hydropeaking on habitat suitability for brown trout and Grayling. The model revealed that habitat suitability deteriorates as flow increases in the studied part of the river.
RIVER RESEARCH AND APPLICATIONS
(2023)
Article
Forestry
Heikki Mykra, Mari Annala, Anu Hilli, Juha-Pekka Hotanen, Raili Hokajarvi, Pauli Jokikokko, Krister Karttunen, Mikko Kesala, Minna Kuoppala, Antti Leinonen, Hannu Marttila, Leo-Juhani Merio, Sirpa Piirainen, Petri Porvari, Aura Salmivaara, Asta Vaso
Summary: It was found that forested buffer zones designed based on varying-depth water table (DTW) index could better protect riparian plant communities, reduce soil erosion, and minimize nutrient leaching in managed forestry areas. This is in contrast to the widely used fixed-width buffer approach, which is adopted due to its simplicity. The cost of DTW-based buffer was also lower than fixed-width buffers, indicating its potential effectiveness and economic benefits.
FOREST ECOLOGY AND MANAGEMENT
(2023)
Article
Water Resources
Filip Muhic, Pertti Ala-Aho, Kashif Noor, Jeffrey M. Welker, Bjorn Klove, Hannu Marttila
Summary: Understanding the importance of different water sources in replenishing soil water is essential for evaluating the vulnerability of sub-arctic regions to climate changes and altered precipitation patterns. This study investigated the spatiotemporal variability and seasonal origins of soil water in a sub-arctic catchment in northern Finland. Field samples were collected from May 2019 to June 2020, including soil cores and stem water of dominant tree species, and stable water isotopes were analyzed. The results showed that well-drained forested areas exhibited distinct seasonal rainfall variation and late snowmelt events, while wetter forested peatlands attenuated these signals. The connectivity to adjacent water pools controlled the soil water storage in the peatland sites. The study also revealed that snowmelt water played a significant role in replenishing and sustaining soil water storage in sub-arctic conditions, with forest soils showing a dominant meltwater signal after snowmelt. The isotopic signals of soil and stem water exhibited less offset in forested peatlands compared to other sites.
HYDROLOGICAL PROCESSES
(2023)
Article
Environmental Sciences
Kashif Noor, Hannu Marttila, Bjorn Klove, Jeffrey M. Welker, Pertti Ala-aho
Summary: This study examines the spatiotemporal variations of water isotopes in snowpack and meltwater in a subarctic catchment. The researchers collected samples from 11 locations in 2019 and 2020 across different landscape features and found consistent patterns in the isotope profiles. They discovered that liquid-ice fractionation was the main cause of heavy isotope depletion in initial meltwater samples. The study highlights the importance of accurately characterizing meltwater isotopes for ecohydrological studies and models.
WATER RESOURCES RESEARCH
(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
Agronomy
Ismail, Ali Torabi Haghighi, Hannu Marttila, Oka Karyanto, Bjorn Klove
Summary: Studies in Indonesian peatlands found that the growth of peatland species is influenced by environmental factors such as air vapor pressure deficits, photosynthetic active radiation, and wind speed. Non-native Acacia crassicarpa had significantly higher radial growth than native species, especially at shallow water-table depths. The relationship between water-table depth, sap-flux velocity, and radial growth in daily timescale was not straightforward due to the complex carbon-allocation mechanism in trees.
AGRICULTURAL AND FOREST METEOROLOGY
(2023)
Article
Geosciences, Multidisciplinary
Katri Rankinen, Martyn Futter, Joy Bhattacharjee, Jose E. Cano Bernal, Emma E. Lannergard, Maria Ojanen, Anna-Kaisa Ronkanen, Hannu Marttila, Seppo Hellsten
Summary: The most significant land use challenges in Northern Finland are related to bioenergy production from peat extraction and forest biomass. The growing demand for bioenergy may increase production rates, but concerns about environmental impacts have led to a decline. Simulations revealed that conversion of peat extraction areas to arable land, coupled with climate change, may pose a risk to water quality, while continuous forestry could have positive impacts.
Article
Geosciences, Multidisciplinary
Eva Skarbovik, Sofie Gyritia Madsen van't Veen, Emma E. Lannergard, Hannah Wenng, Marc Stutter, Magdalena Bieroza, Kevin Atcheson, Philip Jordan, Jens Folster, Per-Erik Mellander, Brian Kronvang, Hannu Marttila, Oyvind Kaste, Ahti Lepisto, Maria Kamari
Summary: Climate change and land use alterations can cause significant changes in soil erosion and sediment fluxes in streams. Optical turbidity sensors can be used as a proxy for suspended sediment concentration (SSC), but there is a need for calibration. This study analyzed calibration data from 31 streams in Northern Europe to identify correlations between turbidity and SSC.
Article
Green & Sustainable Science & Technology
Juho Kinnunen, Pekka M. Rossi, Inga Herrmann, Anna-Kaisa Ronkanen, Elisangela Heiderscheidt
Summary: Decentralized sanitation facilities can provide a more flexible approach to improving global sanitation. However, reports indicate that there are often low and variable treatment performances in on-site wastewater treatment systems (OWTS). This study conducted a statistical analysis of 1301 samples from 395 units in Finland and Sweden to increase knowledge on effluent water quality and compliance with regulations. The findings revealed both compliance and non-compliance rates, with certain factors such as system type and treatment process affecting contaminant concentrations.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Engineering, Civil
Ali Danandeh Mehr, Hannu Marttila, Ali Torabi Haghighi, Danny Croghan, Nasrin Fathollahzadeh Attar
Summary: This article explores the forecasting capabilities of three classic linear and nonlinear autoregressive modeling techniques and proposes a new ensemble evolutionary time series approach to model and forecast daily dynamics in stream dissolved organic carbon (DOC). The new method, called genetic-based SETAR (GTAR), evolves through the integration of state-of-the-art genetic programming with SETAR. The results show that all the models can accurately forecast the DOC dynamics with a 1-day ahead accuracy, and the hybrid GTAR provides the best accuracy for predicting DOC in boreal conditions.
AQUA-WATER INFRASTRUCTURE ECOSYSTEMS AND SOCIETY
(2023)
Article
Environmental Sciences
Annaliza Cainglet, Katharina Kujala, Maarit Liimatainen, Hanna Prokkola, Sari Piippo, Heini Postila, Anna-Kaisa Ronkanen, Elisangela Heiderscheidt
Summary: This study investigated the influence of different coagulants used in municipal wastewater treatment on the biological stabilization of sludge. The results showed that the type of coagulant used had a significant impact on the biological stabilization of sludge. Organic coagulants were found to decrease the biodegradability of sludge biomass but increase gas production.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Water Resources
Zhanar Naurozbayeva, Aziza Baubekova, Anastasia Kvasha, Vladimir Lobanov, Bjorn Klove, Ali Torabi Haghighi
Summary: This article analyzes the driving factors of long-term change in the ice regime of the Northern Caspian Sea using satellite and in situ observation. It compares the linear trend and step change models to assess climatic shifts. The stepwise shift in temperatures in the 1980s is linked to changes in atmospheric circulation. The decrease in negative temperatures impacts the length and intensity of winters, resulting in a shorter freeze period and reduced ice thickness.
INTERNATIONAL JOURNAL OF WATER RESOURCES DEVELOPMENT
(2023)
Article
Water Resources
Ali Torabi Haghighi, Mehdi Mazaheri, Siamak Amiri, Sahand Ghadimi, Roohollah Noori, Mourad Oussalah, Alireza Gohari, Mojtaba Noury, Ali Akbar Hekmatzadeh, Bjorn Klove
Summary: This study examines the influence of human activities and climate variability on 86 dams and hydropower across Iran. It introduces the concept of 'mirage water' to estimate the impact of these factors on inflow. Data analysis shows that out of 1729 m(3)s(-1) of mirage water, 705 m(3)s(-1) are contributed by anthropogenic activities and 1024 m(3)s(-1) by precipitation deficits. This indicates that some parts of Iran's strategic investments in water resources management over the past 60 years have failed. The study underscores the necessity for enhanced management practices and infrastructure investments to ensure sustainable water resources in arid and semi-arid regions.
INTERNATIONAL JOURNAL OF WATER RESOURCES DEVELOPMENT
(2023)
Review
Environmental Sciences
Aleksi Rasanen, Eerika Albrecht, Mari Annala, Lasse Aro, Anna M. Laine, Liisa Maanavilja, Jyri Mustajoki, Anna-Kaisa Ronkanen, Niko Silvan, Oili Tarvainen, Anne Tolvanen
Summary: After drainage for forestry and agriculture, peat extraction is a major cause of peatland degradation. This study reviews 356 scientific articles to examine the after-use options for ceased peat extraction, their impacts, and best practices. The research focuses on restoration, abandonment, and replacement, with limited studies comparing the environmental and social impacts.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Aleksi Isoaho, Lauri Ikkala, Hannu Marttila, Jan Hjort, Timo Kumpula, Pasi Korpelainen, Aleksi Rasanen
Summary: This study used unmanned aerial vehicle data and a linear regression model to spatially model the water table level in peatlands in northern Finland, demonstrating the potential for assessing the spatial success of restoration using multi-sensor ultra-high-resolution data.
REMOTE SENSING APPLICATIONS-SOCIETY AND ENVIRONMENT
(2023)