Article
Geosciences, Multidisciplinary
Kazem Nosrati, Mojtaba Akbari-Mahdiabad, Shamsollah Ayoubi, Adrian L. Collins
Summary: This study aimed to trace the sources of aeolian sediment in central Iran using low-cost color and magnetic tracers, identifying salt flat plains as the dominant source followed by agricultural land.
Article
Geosciences, Multidisciplinary
Rennan Cabral Nascimento, Angelo Jamil Maia, Ygor Jacques Agra Bezerra da Silva, Fabio Farias Amorim, Clistenes Williams Araujo do Nascimento, Tales Tiecher, Olivier Evrard, Adrian L. Collins, Caroline Miranda Biondi, Yuri Jacques Agra Bezerra da Silva
Summary: The source contributions to suspended and bed sediments in the polluted Ipojuca River system were quantified using geochemical tracers. The study identified the lower catchment, Oxisols, and sugarcane croplands as the dominant sediment sources. These findings are crucial for managing excessive sediment loads and sediment-associated contaminants in estuarine and coastal environments.
Article
Environmental Sciences
Renatus James, Aloyce I. Amasi, Maarten Wynants, Joel Nobert, Kelvin M. Mtei, Karoli Njau
Summary: The purpose of this study was to trace the dominant sources of sediment in the Simiyu River using geochemical fingerprinting, in order to improve land management and reduce sediment yields in the Lake Victoria Basin. The results showed that eroded soil from agricultural areas is the main contributor to transported sediment in the Simiyu River.
JOURNAL OF SOILS AND SEDIMENTS
(2023)
Article
Water Resources
Jean P. G. Minella, Gustavo H. Merten, Alexandre Schlesner, Felipe Bernardi, Claudia A. P. de Barros, Tales Tiecher, Rafael Ramon, Olivier Evrard, Danilo Rheinheimer dos Santos, Jose Miguel Reichert, Rutineia Tassi
Summary: This article provides an overview of almost 20 years of monitoring in the Arvorezinha experimental catchment, highlighting the impact of hydrology and sediment yield, as well as the research methods used. It stresses the importance of catchment-scale studies for teaching, generating technical-scientific knowledge, and fostering collaboration between research groups.
HYDROLOGICAL PROCESSES
(2022)
Article
Geosciences, Multidisciplinary
Kazem Nosrati, Mojtaba Akbari-Mahdiabad, Peter Fiener, Adrian L. Collins
Summary: The study aimed to identify spatial source contributions of fine-grained bed sediment samples in a large mountainous river basin in Iran using various statistical and machine learning approaches. Results showed that sub-basins 3 and 7 were the dominant spatial sources of the two size fractions, highlighting the most active erosional zones spatially.
Article
Soil Science
Virginie Sellier, Oldrich Navratil, John Patrick Laceby, Cedric Legout, Anthony Foucher, Michel Allenbach, Irene Lefevre, Olivier Evrard
Summary: Tracing the origin of sediment sources is crucial for understanding hydro-sedimentary dynamics at the catchment scale. In a study on a mining catchment in New Caledonia, combining color parameters with geochemical properties showed the strongest discrimination between sediment sources, reducing uncertainties associated with sediment source apportionment. These approaches based on geochemical properties or coupled with color parameters could be valuable in similar mining areas worldwide.
Article
Meteorology & Atmospheric Sciences
Catherine E. Finkenbiner, Stephen P. Good, Scott T. Allen, Richard P. Fiorella, Gabriel J. Bowen
Summary: This study presents a statistical method to temporally downscale geochemical tracer signals in precipitation for high-resolution applications. The method was evaluated at 27 sites worldwide, showcasing its ability to accurately downscale tracer concentrations to daily values.
JOURNAL OF HYDROMETEOROLOGY
(2021)
Article
Environmental Sciences
Zoe Bainbridge, Jon Olley, Scott Wilkinson, Rebecca Bartley, Stephen Lewis, Cameron Dougall, Sana Khan, Petra Kuhnert, Joanne Burton
Summary: This study adopts a novel approach to refine and map the sediment source zones within the Bowen catchment by integrating three independently derived sediment budgets, targeted tributary water quality monitoring, and geochemical sediment source tracing. The field data and finer resolution predictions have identified the Little Bowen River and Rosella Creek as the largest sediment sources in the Bowen River catchment. The use of integrated datasets provides a higher level of certainty in predicting fine sediment sources and can inform catchment management prioritization.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Terry Cox, J. Patrick Laceby, Till Roth, Christine Alewell
Summary: Accelerated soil erosion is a global threat to soil health. Sediment fingerprinting using compound-specific stable isotopes (CSSI) can help monitor and identify areas with high sediment delivery. This study investigates the selection of CSSI tracers and the impact of non-informative tracers on model performance.
JOURNAL OF SOILS AND SEDIMENTS
(2023)
Article
Environmental Sciences
S. Pulley, A. L. Collins
Summary: Measuring sediment colour using an office document scanner is a quick and cost-effective alternative method for tracing sediment sources. Treatment of samples with hydrogen peroxide can potentially improve source discrimination, leading to more precise management efforts.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Engineering, Civil
Sanghyun Lee, Maria L. Chu, Jorge A. Guzman
Summary: This study examined the impact of radar-derived precipitation (RDP) and rain-gauge precipitation (RGP) on sediment prediction, finding that combining RDP led to better model performance by improving the accuracy of sediment yield predictions at higher resolution. This highlights the importance of considering the spatial variability of rainfall and assessing sediment production in order to improve predictions and reduce uncertainties associated with sediment simulations.
JOURNAL OF HYDROLOGY
(2021)
Article
Geography, Physical
Maarten Wynants, Linus Munishi, Kelvin Mtei, Samuel Bode, Aloyce Patrick, Alex Taylor, David Gilvear, Patrick Ndakidemi, William H. Blake, Pascal Boeckx
Summary: Water bodies in Tanzania are facing increased siltation, driven by soil erosion and sediment transport. A lack of understanding about sources of sediment hinders effective mitigation efforts. By applying sediment tracing techniques, this study identified that hillslope erosion on rangelands and croplands is the main contributor to sediment load in Tanzanian rivers. This evidence links land use, erosion, and sediment transport, providing insights for targeted intervention.
EARTH SURFACE PROCESSES AND LANDFORMS
(2021)
Article
Environmental Sciences
Jinke Liu, Guilin Han
Summary: The study highlighted the increasing concerns over sulfate pollution in water environment. By using stable isotopes and receptor models, the study found that anthropogenic inputs significantly contribute to the chemical compositions of the Mun river water. Therefore, urgent management strategies are needed from the Thai government to address the sulfate pollution issue in the Mun River basin.
ENVIRONMENTAL POLLUTION
(2021)
Review
Environmental Sciences
Kiruthika Mohan, Vignesh Rajkumar Lakshmanan
Summary: This review provides an overview of the sources, fate, and distribution of microplastics, and introduces techniques and methods for tracing microplastics, emphasizing the importance of integrated and multidimensional approaches. The role of plastisphere, heavy metal, and biofilm microbial community in tracing the sources of microplastics is also highlighted.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Hae Jong Yang, Ki Moon Bong, Tae-Woo Kang, Soon Hong Hwang, Eun Hye Na
Summary: The study investigated particle size distribution and heavy metal concentrations in surface sediments of streams and lakes in the Seomjin River Basin by comparing with Sediment Quality Guidelines (SQGs). Different origins were identified through statistical and geochemical approaches. The results showed that while some heavy metal concentrations were higher in the Boseong River, overall pollution levels in the basin were not severe.
Article
Geosciences, Multidisciplinary
Rennan Cabral Nascimento, Angelo Jamil Maia, Ygor Jacques Agra Bezerra da Silva, Fabio Farias Amorim, Clistenes Williams Araujo do Nascimento, Tales Tiecher, Olivier Evrard, Adrian L. Collins, Caroline Miranda Biondi, Yuri Jacques Agra Bezerra da Silva
Summary: The source contributions to suspended and bed sediments in the polluted Ipojuca River system were quantified using geochemical tracers. The study identified the lower catchment, Oxisols, and sugarcane croplands as the dominant sediment sources. These findings are crucial for managing excessive sediment loads and sediment-associated contaminants in estuarine and coastal environments.
Editorial Material
Engineering, Environmental
G. A. McAuliffe, T. Takahashi, T. Beal, T. Huppertz, F. Leroy, J. Buttriss, A. L. Collins, A. Drewnowski, S. J. McLaren, F. Ortenzi, J. C. van der Pols, S. van Vliet, M. R. F. Lee
Summary: A number of recent life cycle assessment (LCA) studies have highlighted the environmental impacts of animal-sourced foods and suggested restrictions or avoidance of these foods in human diets. However, it is important to consider nutrient bioavailability and protein quality before making such recommendations, especially considering their contribution to nutrient adequacy in vulnerable populations. This paper discusses the usefulness of nutritional LCA (nLCA) and proposes the consideration of protein quality in nLCA studies.
INTERNATIONAL JOURNAL OF LIFE CYCLE ASSESSMENT
(2023)
Article
Environmental Sciences
Yusheng Zhang, Adrian L. Collins
Summary: The intensive cereal farming in the UK leads to unintended consequences, such as water pollution. The current adoption of best management measures has limited benefits, and alternative management scenarios need to be explored. This study used the Farmscoper tool to examine two management scenarios for intensive cereal farms in eastern England. The mechanistic scenario, based on a better understanding of on-farm pollutant sources, resulted in greater reductions in pollutant emissions compared to the current advice scenario, but with mixed impacts on costs. Neither scenario had a significant impact on unintended consequences, highlighting the need for structural changes in land cover.
Article
Geosciences, Multidisciplinary
Nafiseh Ashtari, Kazem Nosrati, Salma Ommi, Adrian L. Collins
Summary: Elevated soil erosion and suspended sediment loss are severe environmental problems in river catchments of Iran. This study investigated the sediment sources and loads in the Talar Drainage Basin in Iran, in relation to earthquake frequency and magnitude. The results showed that seismic activity and ground acceleration have a significant impact on sediment loss and can elevate erosivity and erodibility factors. The study supports environmental planners in targeting management strategies to reduce suspended sediment loads and protect fluvial habitats.
Article
Geosciences, Multidisciplinary
Chen Han, Minxin Song, Qiang Tang, Jie Wei, Xiubin He, Adrian L. Collins
Summary: The impact of restorative land management schemes on soil systems in the Three Gorges Reservoir Area remains poorly understood. This study found that reforestation and cropland abandonment can increase soil aggregate stability and organic carbon stocks. Additionally, abandoned croplands even exhibited higher soil aggregate stability and organic carbon stocks than reforestation woodlands. However, citrus woodlands had lower soil aggregate stability and organic carbon content compared to present-day croplands.
Article
Ecology
J. Iwan Jones, Charlotte E. M. Lloyd, John F. F. Murphy, Amanda Arnold, Chas P. P. Duerdoth, Adrianna Hawczak, James L. L. Pretty, Penny J. J. Johnes, Jim E. E. Freer, Moragh W. W. Stirling, Carla Richmond, Adrian L. L. Collins
Summary: Monitoring programmes worldwide use biota to assess water body health. Numerical stressor-specific biotic indices based on biota response have been developed, but it is unclear how variation in pressures within sites influences different biotic groups. Understanding this would help in setting achievable targets and implementing effective mitigation strategies.
FRESHWATER BIOLOGY
(2023)
Article
Environmental Sciences
S. Pulley, A. L. Collins
Summary: The effective management of sediment losses in large river systems is crucial for preserving their water sources and ecosystem services. However, due to budgetary and logistical constraints, the understanding of catchment sediment dynamics needed for targeted management is often lacking. This study investigates the use of office document scanners to collect recently deposited overbank sediment and measure its color, providing a rapid and cost-effective method to identify the evolution of sediment sources in two UK river catchments. The results demonstrate the potential of using sediment color as an informative tool for improving catchment management measures.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Agronomy
Jerry Celumusa Dlamini, Eyob Habte Tesfamariam, Robert Dunn, J. Evans, Jane Hawkins, Martin Blackwell, Adrian Collins, Laura Cardenas
Summary: In this study, the researchers investigated the soil CO2 emissions in different types of riparian buffers and found that the woodland riparian buffer had the highest soil CO2 emissions. Although there were no significant differences among the treatments, these short-term findings can be helpful in developing soil CO2 mitigation strategies and modeling similar emissions in agricultural systems.
JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE
(2023)
Article
Environmental Sciences
R. Maltauro, M. Stone, A. L. Collins, B. G. Krishnappan, U. Silins
Summary: This study assesses freshwater flocculation in a gravel-bed river in southern Alberta, Canada, using time varying multimodal effective particle size distributions (EPSDs) and hydraulic parameters. The results show that flocculation, particle breakage, and mobilization of particles are shear dependent, with higher shear stress limiting flocculation to smaller sizes and lower bed shear stress creating higher volumes of macroflocs. The relationship between particle size and hydraulic properties has implications for advancing fine sediment transport models.
JOURNAL OF SOILS AND SEDIMENTS
(2023)
Article
Environmental Sciences
Niels F. Lake, Nuria Martinez-Carreras, Jean Francois Iffly, Peter J. Shaw, Adrian L. Collins
Summary: Sediment fingerprinting is a method used to identify the sources of sediment in a catchment. Traditional approaches require extensive resources for sampling and laboratory analysis. This study proposes the use of UV-VIS absorbance spectra, measured by submersible spectrophotometers, as a rapid and non-destructive method for sediment fingerprinting. Results showed a relatively low deviation between the spatial source contributions using absorbance and sediment budgeting, indicating the potential of this method for sediment tracing in natural environments.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Soil Science
S. Pulley, H. Taylor, J. M. Prout, S. M. Haefele, A. L. Collins
Summary: Building up stocks of soil organic carbon (SOC) can improve soil conditions and mitigate climate change. The ratio of SOC to clay provides a better indicator of soil condition and could serve as a benchmark for ecosystem service payments. The study found that all arable soils and most ley grassland soils in the North Devon UNESCO World Biosphere Reserve exceeded the desired SOC:clay ratio, indicating potential for building up SOC stocks. However, land use had a significant impact on SOC:clay ratios, with permanent pasture fields having the highest ratios. The study suggests that preserving existing SOC stocks would be a more suitable basis for ecosystem service payments in the region.
SOIL USE AND MANAGEMENT
(2023)
Editorial Material
Agronomy
G. A. McAuliffe, T. Takahashi, M. R. F. Lee, A. Jebari, L. Cardenas, A. Kumar, F. Pereyra-Goday, H. Scalabrino, A. L. Collins
Summary: Rothamsted Research is the world's oldest agricultural research centre, which has successfully integrated human nutrition into environmental footprint assessment through life cycle assessment methodology, providing valuable insights for sustainable agriculture.
FOOD AND ENERGY SECURITY
(2023)
Article
Environmental Sciences
Arnab Das, Renji Remesan, Adrian L. Collins, Ashok Kumar Gupta
Summary: The global demand for sediment source fingerprinting continues to increase in order to support improved management of sediment problems. In our study, a Bayesian fingerprinting approach using MixSIAR with geochemical signatures was used, both with and without informative priors based on particle size and slope. The results showed that agricultural and barren lands were the main sediment sources, with forests being less significant. Comparing the results with a newly proposed Source Sensitivity Index (SSI) and the INVEST-SDR model, the SSI maps using informative priors showed more than 78% agreement with the INVEST-SDR model in sub-catchment prioritization for sediment sources. This study demonstrates the benefits of combining geochemical sediment source fingerprinting with SSI indices in larger catchments where spatial prioritization of soil and water conservation is challenging but necessary.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Prakash N. Dixit, Goetz M. Richter, Kevin Coleman, Adrian L. Collins
Summary: Reducing CO2 emissions is crucial for the UK to achieve its net zero policy objective. By leveraging climate change and land use change, suitable bioenergy crops can be strategically deployed to enhance energy production and carbon sequestration. This study evaluates the potential of bioenergy crops and their response to changing climate in the upper River Taw observatory catchment in southwest England. The results indicate that a warming climate positively impacts the production of all crops considered, with colder areas benefiting more in terms of biomass. Additionally, converting permanent grassland to perennial bioenergy crops can increase production and carbon sequestration potential.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Civil
Arfan Arshad, Ali Mirchi, Javier Vilcaez, Muhammad Umar Akbar, Kaveh Madani
Summary: High-resolution, continuous groundwater data is crucial for adaptive aquifer management. This study presents a predictive modeling framework that incorporates covariates and existing observations to estimate groundwater level changes. The framework outperforms other methods and provides reliable estimates for unmonitored sites. The study also examines groundwater level changes in different regions and highlights the importance of effective aquifer management.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Lihua Chen, Jie Deng, Wenzhe Yang, Hang Chen
Summary: A new grid-based distributed karst hydrological model (GDKHM) is developed to simulate streamflow in the flood-prone karst area of Southwest China. The results show that the GDKHM performs well in predicting floods and capturing the spatial variability of karst system.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Faruk Gurbuz, Avinash Mudireddy, Ricardo Mantilla, Shaoping Xiao
Summary: Machine learning algorithms have shown better performance in streamflow prediction compared to traditional hydrological models. In this study, researchers proposed a methodology to test and benchmark ML algorithms using artificial data generated by physically-based hydrological models. They found that deep learning algorithms can correctly identify the relationship between streamflow and rainfall in certain conditions, but fail to outperform traditional prediction methods in other scenarios.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Yadong Ji, Jianyu Fu, Bingjun Liu, Zeqin Huang, Xuejin Tan
Summary: This study distinguishes the uncertainty in drought projection into scenario uncertainty, model uncertainty, and internal variability uncertainty. The results show that the estimation of total uncertainty reaches a minimum in the mid-21st century and that model uncertainty is dominant in tropical regions.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Z. R. van Leeuwen, M. J. Klaar, M. W. Smith, L. E. Brown
Summary: This study quantifies the effectiveness of leaky dams in reducing flood peak magnitude using a transfer function noise modelling approach. The results show that leaky dams have a significant but highly variable impact on flood peak magnitude, and managing expectations should consider event size and type.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Zeda Yin, Yasaman Saadati, M. Hadi Amini, Linlong Bian, Beichao Hu
Summary: Combined sewer overflows pose significant threats to public health and the environment, and various strategies have been proposed to mitigate their adverse effects. Smart control strategies have gained traction due to their cost-effectiveness but face challenges in balancing precision and computational efficiency. To address this, we propose exploring machine learning models and the inversion of neural networks for more efficient CSO prediction and optimization.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Qimou Zhang, Jiacong Huang, Jing Zhang, Rui Qian, Zhen Cui, Junfeng Gao
Summary: This study developed a N-cycling model for lowland rural rivers covered by macrophytes and investigated the N imports, exports, and response to sediment dredging. The findings showed a considerable N retention ability in the study river, with significant N imports from connected rivers and surrounding polders. Sediment dredging increased particulate nitrogen resuspension and settling rates, while decreasing ammonia nitrogen release, denitrification, and macrophyte uptake rates.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Xue Li, Yingyin Zhou, Jian Sha, Man Zhang, Zhong-Liang Wang
Summary: High-resolution climate data is crucial for predicting regional climate and water environment changes. In this study, a two-step downscaling method was developed to enhance the spatial resolution of GCM data and improve the accuracy for small basins. The method combined medium-resolution climate data with high-resolution topographic data to capture spatial and temporal details. The downscaled climate data were then used to simulate the impacts of climate change on hydrology and water quality in a small basin. The results demonstrated the effectiveness of the downscaling method for spatially differentiated simulations.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Tongqing Shen, Peng Jiang, Jiahui Zhao, Xuegao Chen, Hui Lin, Bin Yang, Changhai Tan, Ying Zhang, Xinting Fu, Zhongbo Yu
Summary: This study evaluates the long-term interannual dynamics of permafrost distribution and active layer thickness on the Tibetan Plateau, and predicts future degradation trends. The results show that permafrost area has been decreasing and active layer thickness has been increasing, with an accelerated degradation observed in recent decades. This has significant implications for local water cycle processes, water ecology, and water security.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Chi Zhang, Xu Zhang, Qiuhong Tang, Deliang Chen, Jinchuan Huang, Shaohong Wu, Yubo Liu
Summary: Precipitation over the Tibetan Plateau is influenced by systems such as the Asian monsoons, the westerlies, and local circulations. The Indian monsoon, the westerlies, and local circulations are the main systems affecting precipitation over the entire Tibetan Plateau. The East Asian summer monsoon primarily affects the eastern Tibetan Plateau. The Indian monsoon has the greatest influence on precipitation in the southern and central grid cells, while the westerlies have the greatest influence on precipitation in the northern and western grid cells. Local circulations have the strongest influence on the central and eastern grid cells.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Manuel Almeida, Antonio Rodrigues, Pedro Coelho
Summary: This study aimed to improve the accuracy of Total Phosphorus export coefficient models, which are essential for water management. Four different models were applied to 27 agroforestry watersheds in the Mediterranean region. The modeling approach showed significant improvements in predicting the Total Phosphorus diffuse loads.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Yutao Wang, Haojie Yin, Ziyi Wang, Yi Li, Pingping Wang, Longfei Wang
Summary: This study investigated the distribution and transformation of dissolved organic nitrogen (DON) in riverbed sediments impacted by effluent discharge. The authors found that the spectral characteristics of dissolved organic matter (DOM) in surface water and sediment porewater could be used to predict DON variations in riverbed sediments. Random forest and extreme gradient boosting machine learning methods were employed to provide accurate predictions of DON content and properties at different depths. These findings have important implications for wastewater discharge management and river health.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Saba Mirza Alipour, Kolbjorn Engeland, Joao Leal
Summary: This study assesses the uncertainty associated with 100-year flood maps under different scenarios using Monte Carlo simulations. The findings highlight the importance of employing probabilistic approaches for accurate and secure flood maps, with the selection of probability distribution being the primary source of uncertainty in precipitation.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Janine A. de Wit, Marjolein H. J. van Huijgevoort, Jos C. van Dam, Ge A. P. H. van den Eertwegh, Dion van Deijl, Coen J. Ritsema, Ruud P. Bartholomeus
Summary: The study focuses on the hydrological consequences of controlled drainage with subirrigation (CD-SI) on groundwater level, soil moisture content, and soil water potential. The simulations show that CD-SI can improve hydrological conditions for crop growth, but the success depends on subtle differences in geohydrologic characteristics.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Constantin Seidl, Sarah Ann Wheeler, Declan Page
Summary: Water availability and quality issues will become increasingly important in the future due to climate change impacts. Managed Aquifer Recharge (MAR) is an effective water management tool, but often overlooked. This study analyzes global MAR applications and identifies the key factors for success, providing valuable insights for future design and application.
JOURNAL OF HYDROLOGY
(2024)