Article
Environmental Sciences
Katarzyna Kubiak-Wojcicka, Patrik Nagy, Martina Zelenakova, Helena Hlavata, Hany F. Abd-Elhamid
Summary: The study revealed that there is a strong correlation between precipitation and runoff indices in the Laborec River hill-country catchment area, with short-term precipitation having a minimal impact on runoff while long-term precipitation changes significantly affect runoff.
Article
Water Resources
F. I. Mathivha, M. Nkosi, M. I. Mutoti
Summary: The study in northeastern South Africa found that both floods and droughts of varying magnitudes have occurred, with decreasing trends in groundwater levels, streamflow, and rainfall. Extreme events were shown to influence groundwater resources in the catchment area based on trend analysis findings.
JOURNAL OF HYDROLOGY-REGIONAL STUDIES
(2021)
Article
Geosciences, Multidisciplinary
Buruk Kitachew Wossenyeleh, Ayalew Shura Kasa, Boud Verbeiren, Marijke Huysmans
Summary: This research investigates drought propagation in the hydrological cycle in a semiarid context. It compares meteorological and groundwater droughts to assess the propagation. The study finds that meteorological droughts occur before groundwater recharge droughts and not all meteorological droughts propagate. Moreover, a combination of mild to severe meteorological droughts can result in a major groundwater-recharge drought event.
HYDROGEOLOGY JOURNAL
(2022)
Article
Environmental Sciences
Swarup Dangar, Vimal Mishra
Summary: The Ganga river basin has experienced a significant loss of groundwater, mainly due to factors such as drought, groundwater pumping, and non-renewable groundwater abstraction. Non-renewable groundwater abstraction contributed to 80% of the groundwater depletion during the period 2002-2016, while renewable groundwater extraction only accounted for 20%.
ENVIRONMENTAL RESEARCH LETTERS
(2021)
Article
Environmental Sciences
Belay Molla Sisay, Dessie Nedaw, Behailu Birhanu, Amanuel Godie Gigar
Summary: This study characterized the surface-groundwater interaction in the Modjo River catchment, central Ethiopia using the SWAT and MODFLOW models. The results showed that there is significant interaction between surface water and groundwater in the catchment, with annual leakage from groundwater to the groundwater system and flux from groundwater to rivers. Based on these findings, future exploitation and management of water resources in the catchment should consider the interconnection between surface water and groundwater for sustainable utilization.
ENVIRONMENTAL EARTH SCIENCES
(2023)
Article
Biodiversity Conservation
Yong Zhang, Zhishuai Qu, Jiqiu Li, Tao Hu, Changzhi Chen, Xiaofeng Lin
Summary: Understanding how different habitats contribute to the diversity of organisms is crucial for biodiversity conservation. The study focused on planktonic microeukaryotes, which are widely distributed in aquatic habitats, to investigate how their distribution is affected by habitat connectivity and heterogeneity. The findings suggest that habitat filtering rather than salinity or geographic distance is the primary driver of community assembly in planktonic microeukaryotes in connected aquatic ecosystems.
ECOLOGICAL INDICATORS
(2023)
Article
Environmental Sciences
Saheed Adeyinka Oke, Rebecca Alowo
Summary: This paper presents a spatial interpolation of hydrological and socioeconomic processes impacting groundwater systems in the Modder river catchment of South Africa. The results show that Modder River groundwater sustainability ranges between low and moderate sustainability. The findings will assist groundwater managers and users in planning groundwater resources effectively, especially in terms of licensing and over pumping.
Article
Water Resources
L. T. Modie, P. K. Kenabatho, M. Stephens, T. Mosekiemang
Summary: The study focused on assessing the interaction between groundwater (GW) and surface water (SW) in the Notwane River Catchment (NRC). The stable isotopic composition and water chemistry of both GW and SW were analyzed, revealing similar characteristics. The study also found that higher ground relief and/or elevation led to lower concentrations of chloride ions and electrical conductivity. The data suggested the presence of active groundwater recharge sites along the river, which could be responsible for aquifer recharge during heavy rainfall. Furthermore, the GW-SW interactions in the NRC were found to be influenced by factors such as differences in water levels between the river and adjacent groundwater table, as well as geological formations like faults and karsts.
JOURNAL OF HYDROLOGY-REGIONAL STUDIES
(2022)
Article
Environmental Sciences
Zuzana Stefunkova, Viliam Macura, Andrej Skrinar, Peter Ivan, Milan Cisty, Martina Majorosova, Viktoria Tyukosova
Summary: This study evaluated the relationship between abiotic flow characteristics and habitat quality by assessing 59 reference reaches of mountain and piedmont streams in Slovakia. The analysis showed a strong correlation between stream depth and width with habitat quality, with increasing surface area leading to a significantly higher AWS value in mountain streams. These results can be used to derive regression equations for simplifying habitat quality evaluation in aquatic ecosystems.
Article
Water Resources
Sileshi Mamo, Behailu Birhanu, Tenalem Ayenew, Getnet Taye
Summary: The study assessed the impacts of future increase in groundwater extraction and decrease in recharge on the groundwater system in the Rib catchment in Ethiopia. It found that the worst-case scenario led to groundwater level drop, reduction in base flows, and decreased evapotranspiration flux, while the optimal scenario showed an increase in groundwater level, base flows, and evapotranspiration flux compared to the worst-case scenario. The results suggest implementing groundwater management measures to mitigate these impacts.
JOURNAL OF HYDROLOGY-REGIONAL STUDIES
(2021)
Article
Engineering, Environmental
Marianna Cislak, Izabela Kruszelnicka, Joanna Zembrzuska, Dobrochna Ginter-Kramarczyk
Summary: Among the various chemicals released into the environment, endocrine disrupting compounds (EDCs), specifically natural estrogens, have gained significant attention due to their potential harmful effects on organisms inhabiting water bodies. This study provides an overview of estrogen levels in surface waters, groundwater, and river sediments in European countries, revealing concentrations ranging from 0.1 ng/L to 10 ng/L in the majority of tested samples. However, the study highlights the need for further exploration in unexplored areas, particularly in Eastern European countries, and identifies factors influencing estrogen emissions.
Article
Environmental Sciences
Sanghyun Park, Hyeonjun Kim, Choelhee Jang
Summary: This study analyzed the groundwater levels in mountainous areas and paddy field areas in the Boryeong Dam catchment through a surface-groundwater integrated runoff simulation, comparing the hydrological responses in wet years and dry years. The results showed that the impact of drought on the groundwater level of paddy catchments is not significant compared to forest catchments, but it does limit agricultural groundwater use before the rainy season.
Article
Environmental Sciences
Ethiopia Bisrat Zeleke, Assefa M. Melesse, Belete Berhanu Kidanewold
Summary: This study assessed the relationship between climate and catchment control in the development of hydrological drought in the Tekeze River Basin in Ethiopia. The findings indicate that the basin responds quickly to drought and storage characteristics do not significantly delay the onset of hydrological drought. The construction of the Tekeze Dam has increased dry season flows but reduced wet season flows, showing potential for runoff redistribution in space and time.
Article
Water Resources
Chenyang Xue, Qi Zhang, Yuxue Jia, Saiyu Yuan
Summary: In the study region of the middle Yangtze River-Poyang Lake-catchment in China, the natural hydrological regime has been altered by climate conditions and human activities, resulting in frequent droughts. The potential recovery capacity of existing reservoirs and a proposed hydraulic project to restore the hydrological regime was assessed. Findings show that joint regulation of existing reservoirs can fully restore the hydrological regime in typical years, but not during extremely dry years. However, the proposed hydraulic project can restore the lake to a reasonable water level even in extreme droughts like 2022.
JOURNAL OF HYDROLOGY-REGIONAL STUDIES
(2023)
Article
Engineering, Civil
Xinyue Hou, Wenke Wang, Zhan Wang, Zhitong Ma, Chunxing Guan, Dan Xi, Pei Li, Jie Li, Xinhui Huang
Summary: Arid inland regions around the world are facing severe water shortages and ecological crises due to climate change and human activities. This study evaluated the hydrogeological processes and hydrochemical effects in the Manas River catchment in China using multiple methods. The results showed a decrease in groundwater storage, reduced river infiltration, and increased concentrations of SO42- and Cl-. Over-exploitation of groundwater for irrigation led to storage depletion and altered flow paths, while expanding arable land and higher temperatures intensified evapotranspiration and salinization of shallow groundwater. The study suggests utilizing natural underground reservoirs and reducing arable land area to ensure sustainable water resources and ecology. The findings provide reference for the development of water resources and environmental protection in arid inland regions globally.
JOURNAL OF HYDROLOGY
(2022)
