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1. Aquatic invertebrate biodiversity in spring-fed habitats of the rio sonoyta basin: variation among habitat types and seasons

Author:
Kelsey D. Hollien; Michael T. Bogan
Source:
Southwestern naturalist 2022 v.66 no.1 pp. 54-66
ISSN:
0038-4909
Subject:
aquatic invertebrates; basins; community structure; dry environmental conditions; groundwater; habitats; highlands; seasonal variation; species richness; spring; springs (water); surface water; topographic slope; wildlife; Sonoran Desert
Abstract:
... Springs are essential sources of water for humans and wildlife in the Sonoran Desert and, despite their isolation, they often support diverse aquatic communities. However, flows in these systems are declining due to groundwater pumping and increasing temperatures and aridity. In the western Sonoran Desert, two spring-fed systems represent the vast majority of perennial surface water along the U.S. ...
DOI:
10.1894/0038-4909-66.1.54

2. Characterizing Hydrological Functioning of Three Large Karst Springs in the Salem Plateau, Missouri, USA

Author:
Shishir K. Sarker; Alan E. Fryar
Source:
Hydrology 2022 v.9 no.6 pp. -
ISSN:
2306-5338
Subject:
agricultural land; aquifers; atmospheric precipitation; autocorrelation; base flow; hydrograph; karsts; spring; springs (water); time series analysis; Missouri
Abstract:
... Spring discharge hydrographs can provide information on karst aquifer connectivity and responses to precipitation. However, few studies have conducted time-series analyses of spring hydrographs over multi-decadal time scales. We examine daily discharge for three large karst springs and daily precipitation for adjoining weather stations during 1928–2019 in the Salem Plateau of southern Missouri, on ...
DOI:
10.3390/hydrology9060096

3. Contaminant transport from stormwater management areas to a freshwater karst spring in Florida: Results of near-surface geophysical investigations and tracer experiments

Author:
Mohammad Shokri; Yuan Gao; Kelly M. Kibler; Dingbao Wang; Michael J. Wightman; Nyle Rice
Source:
Journal of hydrology 2022 v.40 pp. 101055
ISSN:
2214-5818
Subject:
aquifers; freshwater; geophysics; groundwater; karsts; nitrates; preferential flow; spring; springs (water); stormwater; stormwater management; water quality; Florida
Abstract:
... Silver Springs is a karst spring in north-central Florida. As landuses in the springshed have urbanized in recent decades, concentrations of contaminants, including nitrate, have increased in spring water, causing environmental concerns. Pathways of groundwater movement from stormwater management areas to Silver Springs were investigated using ground-based geophysical surveys (ground penetrating r ...
DOI:
10.1016/j.ejrh.2022.101055

4. Fault-controlled springs: A review

Author:
Robin Keegan-Treloar; Dylan J. Irvine; S. Cristina Solórzano-Rivas; Adrian D. Werner; Eddie W. Banks; Matthew J. Currell
Source:
Earth-science reviews 2022 v.230 pp. 104058
ISSN:
0012-8252
Subject:
freshwater; groundwater; groundwater flow; humans; spring; springs (water)
Abstract:
... Springs sustain groundwater-dependent ecosystems and provide freshwater for human use. Springs often occur because faults modify groundwater flow pathways leading to discharge from aquifers with sufficiently high pressure. This study reviews the key characteristics and physical processes, field investigation techniques, modelling approaches and management strategies for fault-controlled spring sys ...
DOI:
10.1016/j.earscirev.2022.104058

5. High-resolution record of geochemical, vegetational and molluscan shifts in a Central European spring-fed fen: implications for regional paleoclimate during the early and mid-Holocene

Author:
Karina Apolinarska; Rafał Kiełczewski; Krzysztof Pleskot; Magdalena Marzec; Liene Aunina; Mariusz Gałka
Source:
Holocene 2022 v.32 no.8 pp. 764-779
ISSN:
1477-0911
Subject:
Holocene epoch; carbon; carbonates; cooling; fens; global cooling; oxygen isotopes; paleoclimatology; paleoecology; peat; sedimentation rate; sediments; springs (water); Poland
Abstract:
... Despite the increasing interest in spring-fed fens’ sediments as a palaeoenvironmental archive, their potential as high-precision climatic records is rarely used to its full extent. Here, we present a detailed early to mid-Holocene record of environmental changes in the Turtul hanging spring-fed fen, northeastern Poland, to test whether the well preserved and accurately subsampled alternating peat ...
DOI:
10.1177/09596836221095975

6. Impacts of Anthropogenic Disturbances on Diatom Diversity in a Shallow Spring-Fed Pool

Author:
Liang-Chi Wang; Hong-Chun Li; Liang-Jian Shiau
Source:
Diversity 2022 v.14 no.3 pp. -
ISSN:
1424-2818
Subject:
Bacillariophyceae; ecological balance; eutrophication; freshwater ecosystems; geochemistry; humans; karsts; lakes; macrophytes; sediments; springs (water); urbanization; China
Abstract:
... Human impacts cause significant problems for shallow lakes in the karst regions of South China. In recent years, the ecological issues related to managing and restoring these critical aquatic ecosystems have come to the fore. Lingshui Pool (LSP) is one of the most-studied spring-fed lake ecosystems in south China, and it has well-preserved chronological profiles. The LSP was a very shallow lake be ...
DOI:
10.3390/d14030166

7. Impacts of Vegetation on Dryland River Morphology: Insights From Spring‐Fed Channel Reaches, Henry Mountains, Utah

Author:
P. J. Southard; J. P. L. Johnson; D. M. Rempe; A. M. Matheny
Source:
Water resources research 2022 v.58 no.6 pp. e2021WR031701
ISSN:
0043-1397
Subject:
aquiclude; arid lands; bedrock; climate change; field experimentation; humans; landscapes; lidar; research; rivers; roughness; sediments; spring; springs (water); topography; vegetation; water; Utah
Abstract:
... A better understanding of how vegetation influences alluvial channels could improve (a) assessments of channel stability and flood risks, (b) applications of vegetation as a river management tool, and (c) predictions of channel responses to climate change and other human impacts. We take advantage of a natural field experiment in the semi‐arid to arid Henry Mountains, Utah, USA: large spatial diff ...
DOI:
10.1029/2021WR031701

8. Intra‐Alpine Islands: Population genomic inference reveals high degree of isolation between freshwater spring habitats

Author:
Lucas Blattner; Kay Lucek; Nathanael Beck; Daniel Berner; Stefanie von Fumetti
Source:
Diversity & distributions 2022 v.28 no.2 pp. 291-305
ISSN:
1366-9516
Subject:
DNA; Pleistocene epoch; biodiversity; effective population size; freshwater; genetic structure; genetic variation; genomics; genotype; habitats; phylogeny; spring; springs (water); water mites; watersheds; Alps region; Central European region
Abstract:
... AIM: Alpine spring ecosystems have long been considered as highly isolated, island‐like habitats. This presumption, however, is insufficiently supported empirically and conclusions about spring isolation have been based on indirect evidence. Therefore, we investigated the population genomic structure of Partnunia steinmanni Walter, 1906, a strictly spring‐dwelling water mite (Hydrachnidia) species ...
DOI:
10.1111/ddi.13461

9. Recharge assessment of the Gran Sasso aquifer (Central Italy): Time-variable infiltration and influence of snow cover extension

Author:
Valeria Lorenzi; Chiara Sbarbati; Francesca Banzato; Alessandro Lacchini; Marco Petitta
Source:
Journal of hydrology 2022 v.41 pp. 101090
ISSN:
2214-5818
Subject:
aquifers; base flow; carbonates; climate change; drought; groundwater; rain; risk; snow; snowmelt; snowpack; springs (water); temperature; Italy
Abstract:
... Carbonate karstified aquifers represent one of the most important groundwater reservoirs for both drinking purposes and environmental preservation. Currently, the recharge–discharge equilibrium in these aquifers is at risk of depletion from withdrawal increases and global change effects. Based on these factors, detailed analyses of recharge distribution over the last 20 years (2001–2020), both in ...
DOI:
10.1016/j.ejrh.2022.101090

10. Reducing uncertainty of karst aquifer modeling with complementary hydrological observations for the sustainable management of groundwater resources

Author:
Yohann Cousquer; Hervé Jourde
Source:
Journal of hydrology 2022 v.612 pp. 128130
ISSN:
0022-1694
Subject:
Bayesian theory; aquifers; groundwater; groundwater extraction; hydrologic data; karsts; mathematical models; model validation; springs (water); surface water; uncertainty; water supply; water table
Abstract:
... A quantitative estimation of the sustainability of groundwater resources is a challenge for water supply in most regions of the world. Sustainability can be estimated through numerical simulation, but uncertainty of models somehow limits the reliability of models’ predictions. To overcome this limitation, we explore how parametric and predictive uncertainties is reduced by adding complementary gro ...
DOI:
10.1016/j.jhydrol.2022.128130

11. Seed germination responses to salinity for three rare wetland plants of spring-fed arid systems

Author:
Antonio Cantu de Leija; Sammy L. King; Tracy S. Hawkins
Source:
Journal of arid environments 2022 v.199 pp. 104705
ISSN:
0140-1963
Subject:
Agalinis; Cirsium; Helianthus annuus; cold; ecophysiology; groundwater; life history; marshes; salinity; seed dormancy; seed germination; springs (water)
Abstract:
... Spring-fed wetlands within arid systems host unique species of plants, many of which are threatened due to the vulnerability of these ecosystems. Increased salinity and drier hydrologic regimes due to anthropogenic activities threaten these systems. Furthermore, limited knowledge regarding key life history traits of species jeopardize the restoration and management of their rare plants. Here, we e ...
DOI:
10.1016/j.jaridenv.2021.104705

12. Sensitivity of an integrated groundwater flow model to model parameters—application to vulnerability assessment of karst aquifers

Author:
Assaad H. Kassem; Joanna Doummar; Jason J. Gurdak
Source:
Groundwater for sustainable development 2022 v.17 pp. 100737
ISSN:
2352-801X
Subject:
aquifers; groundwater; heat sums; hydrograph; hydrologic models; karsts; mathematical models; risk assessment; soil; spring; springs (water); sustainable development; temperature; time series analysis; water content; watersheds; Lebanon
Abstract:
... The sustainable use and management of groundwater can benefit from improvements to both qualitative and quantitative groundwater vulnerability methods for a variety of hydrogeologic systems. Vulnerability methods in karst aquifers rely on key factors assigned different weights according to their estimated influence on groundwater resilience to contamination. Because of the duality of infiltration ...
DOI:
10.1016/j.gsd.2022.100737

13. Simulating a Highly Parameterized Groundwater Model for a Tropical Eogenetic Karst Aquifer Using Physically-Based Numerical Modeling and Inverse Method

Author:
Dua K.S.Y. Klaas; Ika Sudiayem; Elkan M.E. Klaas; Eldav C.M. Klaas
Source:
Water resources 2022 v.49 no.4 pp. 721-732
ISSN:
0097-8078
Subject:
aquifers; climate; geostatistics; groundwater; hydraulic conductivity; hydrologic models; karsts; land use change; springs (water); water management
Abstract:
... Formulation of effective water management based on the understanding of the interaction between climate and sub-surface components as well as its causative consequences to groundwater system is important to ensure sustainable groundwater management in karst area. One way to accomplish it is by using numerical groundwater model which is calibrated and validated based on historical measurements. In ...
DOI:
10.1134/S0097807822040108

14. Spatial-temporal behavior of precipitation driven karst spring discharge in a mountain terrain

Author:
Xiehui Song; Huiqing Hao; Wenqiang Liu; Qi Wang; Lixing An; Tian-Chyi Jim Yeh; Yonghong Hao
Source:
Journal of hydrology 2022 v.612 pp. 128116
ISSN:
0022-1694
Subject:
aquifers; groundwater; groundwater flow; karsts; landscapes; neural networks; river valleys; runoff; springs (water); surface water; temporal variation; water table; watersheds; China
Abstract:
... Behaviors of karst springs are manifestations of spatial and temporal dynamics involving multi-hydrogeological processes, including precipitation, surface water runoff, infiltration, groundwater flow, and anthropogenic activities. These dynamic processes are usually nonlinear and nonstationary. In this study, we couple the Shapley Additive exPlanation (SHAP) with a Long Short-Term Memory (LSTM) re ...
DOI:
10.1016/j.jhydrol.2022.128116

15. Spring discharge mechanism along the southeast coast of Yonaguni Island in the southern Ryukyu forearc

Author:
Tomohiro Toki; Hina Kataoka; Ryogo Takada; Shinji Nakaya; Syogo Oshima; Akira Ijiri
Source:
Journal of hydrology 2022 v.40 pp. 101051
ISSN:
2214-5818
Subject:
chemical composition; coasts; groundwater; groundwater flow; sea level; springs (water)
Abstract:
... Spring along the southeast coast of Yonaguni Island, located at the western end of the Ryukyu forearc. The chemical composition of groundwater, including SF₆ concentration, was investigated to clarify the mechanism of groundwater discharge around Sanninudai on the southeast coast of Yonaguni Island. Accurate determination of groundwater flow paths is essential to the conservation and management of ...
DOI:
10.1016/j.ejrh.2022.101051

16. Temperature and discharge variations in natural mineral water springs due to climate variability: a case study in the Piedmont Alps (NW Italy)

Author:
Leone Bastiancich; Manuela Lasagna; Susanna Mancini; Mauro Falco; Domenico Antonio De Luca
Source:
Environmental geochemistry and health 2022 v.44 no.7 pp. 1971-1994
ISSN:
0269-4042
Subject:
air; air temperature; case studies; climate; climate change; geochemistry; groundwater; mineral water; piedmont; rain; spring; springs (water); topography; Alps region; Italy
Abstract:
... In the context of global climate change, understanding the relationships between climate and groundwater is increasingly important. This study in the NW Alps represents the first regional-scale investigation of the groundwater feature variation in mountain aquifers due to climate variability. The analysis of groundwater temperature and discharge in 28 natural mineral water springs and meteorologic ...
DOI:
10.1007/s10653-021-00864-8

17. Three biodiversity facets and assembly mechanism of the oligochaete community in the karst spring environment

Author:
Pavel Beracko; Jakub Cíbik; Patrik Macko; Tomáš Lánczos
Source:
Hydrobiologia 2022 v.849 no.3 pp. 603-624
ISSN:
0018-8158
Subject:
Oligochaeta; benthic organisms; biodiversity conservation; ecotones; fauna; functional diversity; karsts; oxygen; phylogeny; species diversity; spring; springs (water); temperature
Abstract:
... Springs as ecotones represent a suitable environment for testing hypotheses regarding the principles of a benthic community assembly. In this study, we aimed to uncover the processes which form the oligochaete assemblages in the karst springs environment. To uncover the assembly mechanism of the oligochaete community, we applied a multidimensional approach which included taxonomic, trait, and phyl ...
DOI:
10.1007/s10750-021-04728-1

18. Transport-based source tracking of contaminants in a karst aquifer: Model implementation, proof of concept, and application to event-based field data

Author:
Ferry Schiperski; Johannes Zirlewagen; Claudia Stange; Andreas Tiehm; Tobias Licha; Traugott Scheytt
Source:
Water research 2022 v.213 pp. 118145
ISSN:
0043-1354
Subject:
advection; aquifers; coliform bacteria; equations; karsts; prediction; research; springs (water); water; watersheds
Abstract:
... Identification and location of contamination sources is crucial for water resource protection — especially in karst aquifers which provide 25% of the world´s population with water but are highly vulnerable to contamination. Transport-based source tracking is proposed and verified here as a complementary approach to microbial and chemical source tracking in karst aquifers for identifying and locati ...
DOI:
10.1016/j.watres.2022.118145

19. Understanding the processes in a historically relevant thermal and mineral spring water by using mixing and inverse geochemical models

Author:
Selene Olea-Olea; Oscar Escolero; Jürgen Mahlknecht; Jorge Mona; Lucia Ortega; Laura Beramendi-Orosco; Olivia Zamora-Martinez; Javier Tadeo-Leon
Source:
Environmental geochemistry and health 2022 v.44 no.7 pp. 2301-2323
ISSN:
0269-4042
Subject:
bicarbonates; carbonate rocks; chemical composition; chlorides; geochemistry; groundwater; hydrochemistry; isotopes; mineral water; risk; sodium; springs (water); temperature; therapeutics; water flow; water quality; water table; Mexico
Abstract:
... The thermal mineral water of Peñón de los Baños spa (Mexico City) has been used for over 500 years starting in pre-Hispanic times and is famous for the treatment of various pathologies. It has a temperature of 45 °C, which is rich in HCO₃⁻, and its main trace elements are B, Li and Fe, which confers healing effects. Concerns about the sustainability of this important spa have motivated this study ...
DOI:
10.1007/s10653-021-01166-9

20. A novel hybrid of support vector regression and metaheuristic algorithms for groundwater spring potential mapping

Author:
Sina Paryani; Aminreza Neshat; Hamid Reza Pourghasemi; Maria Margarita Ntona; Nerantzis Kazakis
Source:
Science of the total environment 2022 v.807 pp. 151055
ISSN:
0048-9697
Subject:
Chiroptera; data collection; environment; groundwater; inventories; prediction; probability; regression analysis; spring; springs (water); support vector machines; sustainable development; Iran
Abstract:
... Limited groundwater resources and their overexploitation have become major challenges for sustainable development worldwide. In this study, an innovative hybrid approach was proposed to generate a groundwater spring potential map (GSPM) from the Sarab plain located in Lorestan Province, Iran, which includes the new best-worst method (BWM), stepwise weight assessment ratio analysis (SWARA), support ...
DOI:
10.1016/j.scitotenv.2021.151055

21. Assessment of diminishing discharge of springs in Central Himalayan region, India

Author:
Ayushi Vijhani; Vinay Shankar Prasad Sinha; Chandrashekhar Azad Vishwakarma; Prashant Singh; Sudhir Kumar Sharma
Source:
Hydrological processes 2022 v.36 no.5 pp. e14582
ISSN:
0885-6087
Subject:
atmospheric precipitation; hydrodynamics; land cover; land use change; model validation; rivers; soil water; spring; springs (water); topography; water supply; watersheds; Himalayan region; India
Abstract:
... Uttarakhand is witnessing a drastic decrease in spring discharge which leads to scarcity of drinking water for Himalayan inhabitants. This study uses a novel approach to assess the surface‐subsurface interaction of water, pivotal for estimating the status of spring discharge. Hydrological modelling has been used to quantify the diminishing discharge of spring and their associated factors, includin ...
DOI:
10.1002/hyp.14582

22. Beaver dam analogue configurations influence stream and riparian water table dynamics of a degraded spring‐fed creek in the Canadian Rockies

Author:
Tariq M. Munir; Cherie J. Westbrook
Source:
River research and applications 2021 v.37 no.3 pp. 330-342
ISSN:
1535-1459
Subject:
groundwater; hydrologic cycle; research; riparian areas; rivers; springs (water); streams; water table; Rocky Mountain region
Abstract:
... Beaver dam analogues (BDAs) are intended to simulate natural beaver dam ecohydrological functions including modifying stream hydrology and enhancing stream‐riparian hydrological connectivity. River restoration practitioners are proactively deploying BDAs in thousands of degraded streams. How various BDAs or their configurations impact stream hydrology and the riparian water table remains poorly un ...
DOI:
10.1002/rra.3753

23. Characterization of karst conduits by tracer tests for an artificial recharge scheme

Author:
Xinyu Cen; Mo Xu; Jihong Qi; Qiang Zhang; Haoxin Shi
Source:
Hydrogeology journal 2021 v.29 no.7 pp. 2381-2396
ISSN:
1431-2174
Subject:
aquifers; climate; groundwater; groundwater recharge; karsts; quantitative analysis; springs (water); China
Abstract:
... Challenged by rapidly changing climate in combination with an increase in anthropogenic pressures, karst groundwater resources in the Old Town of Lijiang (OTLJ), SW China, are diminishing. Higher frequency and longer duration of dried-up periods have been observed at the Heilongtan Park (HP) Springs in recent years. Thus, there is an urgent need for an artificial recharge scheme, aimed at replenis ...
DOI:
10.1007/s10040-021-02398-w

24. Climate change scenario of hydro-chemical analysis and mapping spatio-temporal changes in water chemistry of water springs in Kumaun Himalaya

Author:
Meenu Rani; Himanshu Joshi; Kireet Kumar; Darshan Kumar Bhatt; Pavan Kumar
Source:
Environment, development and sustainability 2021 v.23 no.3 pp. 4659-4674
ISSN:
1387-585X
Subject:
alkalinity; basins; bicarbonates; climate change; environment; geochemistry; groundwater; hydrochemistry; magnesium; pH; spring; springs (water); sulfates; turbidity; water quality; watersheds; Himalayan region
Abstract:
... Monitoring and mapping physicochemical properties of springs water are very crucial in Upper Kosi watershed as natural springs, and spring-fed streams are the only source of drinking water for thousands of inhabitants living there. Understanding of hydro-geochemical characteristics and water quality of the springs in perched aquifers of the basin provides useful information for sustainable use of ...
DOI:
10.1007/s10668-020-00793-z

25. A Comparative Analysis of Data-Driven Models (SVR, ANFIS, and ANNs) for Daily Karst Spring Discharge Prediction

Author:
Akram Rahbar; Ali Mirarabi; Mohammad Nakhaei; Mahdi Talkhabi; Maryam Jamali
Source:
Water resources management 2022 v.36 no.2 pp. 589-609
ISSN:
0920-4741
Subject:
administrative management; algorithms; aquifers; fuzzy logic; hybrids; karsts; prediction; regression analysis; spring; springs (water); water
Abstract:
... Spring discharge always illustrates the groundwater-flux and aquifer storage oscillations. Because of inherent heterogeneity in karst environments, it is essential to mimic karst spring flows to acquire a superior understanding of hydrological processes and provide sustainable management and protection of karst waters. The framework of karst media is nonlinear and complex, which can be demonstrate ...
DOI:
10.1007/s11269-021-03041-9

26. Contribution of the satellite-data driven snow routine to a karst hydrological model

Author:
Süleyman Selim Çallı; Kübra Özdemir Çallı; M. Tuğrul Yılmaz; Mehmet Çelik
Source:
Journal of hydrology 2022 v.607 pp. 127511
ISSN:
0022-1694
Subject:
altitude; aquifers; data collection; heat sums; hydrologic models; karsts; model validation; mountains; rain; satellites; snow; springs (water); temperature; watersheds
Abstract:
... Snow recharge is an important dominant hydrological process in the high altitude mountainous karstic aquifer systems. In general, widely used karst-dedicated hydrological models (e.g., KarstMod, Varkarst) do not include a snow routine in the model structure to avoid increasing the number of model parameters while representing the complex hydrological process. As a result, recharge process is not r ...
DOI:
10.1016/j.jhydrol.2022.127511

27. Discharge variation of multiple springs associated with a fractured aquifer

Author:
Mohammad M. Sedghi; Hongbin Zhan
Source:
Journal of hydrology 2021 v.603 pp. 127030
ISSN:
0022-1694
Subject:
anisotropy; aquifers; drainage; freshwater; geometry; gravity; spring; springs (water); water table
Abstract:
... Springs are important source of fresh water for many regions of the world. Most mathematical models simulating spring discharge are linear and non-linear reservoir-based models that are simple and easy to use. They, however, suffer from oversimplification and a lack of physical processes that limit their applicability. The goal of this work is to present process-based analytical model of discharge ...
DOI:
10.1016/j.jhydrol.2021.127030

28. Distribution Pattern of Ichthyofaunal Diversity in Different Habitats in the First-, Second- and Third-Order Streams of Randi Gad from Garhwal Himalaya, India

Author:
Pankaj Bahuguna
Source:
National Academy science letters 2021 v.44 no.5 pp. 393-395
ISSN:
0250-541X
Subject:
biodiversity; fauna; fish; springs (water); streams; Himalayan region; India
Abstract:
... The present study was undertaken to report the ichthyofaunal diversity on spring-fed hill stream Randi Gad from Pauri Garhwal District, Uttarakhand, India. In this work, the author proposed one novel approach, viz. stream order-wise study of distribution and diversity of fish fauna from Garhwal Himalaya, India. A total of 121 fish species including 4, 12 and 22 fish species were collected from fir ...
DOI:
10.1007/s40009-020-01032-9

29. Distribution and Relative Abundance of the Suwannee Alligator Snapping Turtle (Macrochelys suwanniensis)

Author:
Kevin M. Enge; Dirk J. Stevenson; Travis M. Thomas; Gerald R. Johnston; John B. Jensen; Benjamin S. Stegenga; Houston C. Chandler; Paul E. Moler
Source:
Chelonian conservation and biology 2021 v.20 no.2 pp. 184-199
ISSN:
1943-3956
Subject:
alligators; drainage; estuaries; museums; rivers; springs (water); streams; swamps; turtles; Florida; Georgia
Abstract:
... The Suwannee alligator snapping turtle (Macrochelys suwanniensis) was first described in 2014. The species is thought to occur in blackwater and spring-fed streams of sufficient size throughout the Suwannee River drainage, but we have limited detailed information regarding its range. To clarify the distribution of M. suwanniensis, we compiled 111 museum, 16 literature, and 40 other credible record ...
DOI:
10.2744/CCB-1488.1

30. Distribution, sources and transport of polycyclic aromatic hydrocarbons (PAHs) in karst spring systems from Western Hubei, Central China

Author:
Wei Chen; Ziqiong Zhang; Ying Zhu; Xianzhen Wang; Longliang Wang; Junwu Xiong; Zhe Qian; Shuai Xiong; Ruichao Zhao; Wei Liu; Qiuke Su; Jiangang Zhou; Hong Zhou; Shihua Qi; Kevin C. Jones
Source:
Chemosphere 2022 v.300 pp. 134502
ISSN:
0045-6535
Subject:
biomass; coal; combustion; groundwater; karsts; particulate emissions; principal component analysis; river water; rivers; soil; spring; springs (water); water security; China
Abstract:
... Karst groundwater is an important water resource but it is vulnerable to contaminants, due to the distinctive geological features of abundant transmissive fractures and conduits in the karst area which connect the surface to the underground systems. Anthropogenic activity-derived polycyclic aromatic hydrocarbons (PAHs) on the surface environment could enter groundwater easily and rapidly and threa ...
DOI:
10.1016/j.chemosphere.2022.134502

31. Estimation of recharge in mountain hard-rock aquifers based on discrete spring discharge monitoring during base-flow recession

Author:
Stefano Segadelli; Maria Filippini; Anna Monti; Fulvio Celico; Alessandro Gargini
Source:
Hydrogeology journal 2021 v.29 no.3 pp. 949-961
ISSN:
1431-2174
Subject:
aquifers; base flow; bedrock; clearcutting; climate; groundwater; lithology; models; spring; springs (water); summer; water management; watersheds; Italy
Abstract:
... Estimation of aquifer recharge is key to effective groundwater management and protection. In mountain hard-rock aquifers, the average annual discharge of a spring generally reflects the vertical aquifer recharge over the spring catchment. However, the determination of average annual spring discharge requires expensive and challenging field monitoring. A power-law correlation was previously reporte ...
DOI:
10.1007/s10040-021-02317-z

32. Evaluation of Karst Spring Discharge Response Using Time-Scale-Based Methods for a Mediterranean Basin of Northern Algeria

Author:
Bilel Zerouali; Mohamed Chettih; Mamdooh Alwetaishi; Zaki Abda; Ahmed Elbeltagi; Celso Augusto Guimarães Santos; Enas E. Hussein
Source:
Water 2021 v.13 no.21 pp. -
ISSN:
2073-4441
Subject:
humans; hydrologic data; rain; rivers; runoff; spectral analysis; springs (water); stream flow; time series analysis; water storage; water supply; watersheds; wavelet; Algeria; Mediterranean region
Abstract:
... Understanding of behavior, variability, and links between hydrological series is a key element for successful long-term water resources planning and management. In this study, various time-scale-based methods such as correlation and spectral analysis (CSA), cross wavelet (XWT), and wavelet coherence transform (WCT) were applied to assess the response of daily rainfall and karst spring discharge fo ...
DOI:
10.3390/w13212946

33. Fate of nitrate during groundwater recharge in a fractured karst aquifer in Southwest Germany

Author:
Anna-Neva Visser; Moritz F. Lehmann; Hermann Rügner; Fernando Mazo D’Affonseca; Peter Grathwohl; Nia Blackwell; Andreas Kappler; Karsten Osenbrück
Source:
Hydrogeology journal 2021 v.29 no.3 pp. 1153-1171
ISSN:
1431-2174
Subject:
agricultural land; aquifers; carbonate rocks; denitrification; electrical conductivity; fertilizers; groundwater; groundwater recharge; isotope labeling; karsts; land use; nitrates; nitrites; nitrogen; rain; springs (water); time series analysis; Germany
Abstract:
... Over the past decades, fractured and karst groundwater systems have been studied intensively due to their high vulnerability to nitrate (NO₃⁻) contamination, yet nitrogen (N) turnover processes within the recharge area are still poorly understood. This study investigated the role of the karstified recharge area in NO₃⁻ transfer and turnover by combining isotopic analysis of NO₃⁻ and nitrite (NO₂⁻) ...
DOI:
10.1007/s10040-021-02314-2

34. Forecasting discharge rate and chloride content of karstic spring water by applying the Levenberg–Marquardt algorithm

Author:
Georgios K. Bekas; Dimitrios E. Alexakis; Dimitra E. Gamvroula
Source:
Environmental earth sciences 2021 v.80 no.11 pp. 404
ISSN:
1866-6280
Subject:
algorithms; aquifers; chlorides; data collection; drought; prediction; salinity; saltwater intrusion; spring; springs (water); Greece
Abstract:
... The Mediterranean countries' coastal-karstic aquifer systems are facing increased pressure due to seawater intrusion and drought impacts. There is a need to understand better karstic systems' functional mechanisms for developing the most appropriate management scenario of water resources in these systems. In this study, the application of Non-Linear Autoregressive neural networks (NAR) on a datase ...
DOI:
10.1007/s12665-021-09685-5

35. Fungal Community Shift Along Steep Environmental Gradients from Geothermal Soils in Yellowstone National Park

Author:
Anna L. Bazzicalupo; Sonya Erlandson; Margaret Branine; Megan Ratz; Lauren Ruffing; Nhu H. Nguyen; Sara Branco
Source:
Microbial ecology 2022 v.84 no.1 pp. 33-43
ISSN:
0095-3628
Subject:
DNA barcoding; ectomycorrhizae; fungal communities; national parks; pH; saprotrophs; soil; springs (water); streams
Abstract:
... Geothermal soils offer unique insight into the way extreme environmental factors shape communities of organisms. However, little is known about the fungi growing in these environments and in particular how localized steep abiotic gradients affect fungal diversity. We used metabarcoding to characterize soil fungi surrounding a hot spring-fed thermal creek with water up to 84 °C and pH 10 in Yellows ...
DOI:
10.1007/s00248-021-01848-y

36. Groundwater resource protection and spring restoration in Upper Jhelum Basin (UJB), western Himalayas

Author:
Ghulam Jeelani; Suhail A. Lone; Altaf Lone; R.D. Deshpande
Source:
Groundwater for sustainable development 2021 v.15 pp. 100685
ISSN:
2352-801X
Subject:
alluvial aquifer; basins; climate change; cropland; groundwater; groundwater recharge; isotope labeling; rivers; sand; spring; springs (water); stream channels; sustainable development; water table; Himalayan region; India
Abstract:
... Groundwater is a significant source of fresh and clean water to millions of people living in the Upper Jhelum Basin (UJB) of Kashmir, India. During the past two to three decades the decline of water table in the shallow aquifers led to a reduction of spring discharge and/or drying up of some springs and wells. In the present study, hydrogeological investigation was carried out to understand the ca ...
DOI:
10.1016/j.gsd.2021.100685

37. Groundwater-Extracting Rice Production in the Rejoso Watershed (Indonesia) Reducing Urban Water Availability: Characterisation and Intervention Priorities

Author:
Ni’matul Khasanah; Lisa Tanika; Lalu Deden Yuda Pratama; Beria Leimona; Endro Prasetiyo; Fitri Marulani; Adis Hendriatna; Mukhammad Thoha Zulkarnain; Alix Toulier; Meine van Noordwijk
Source:
Land 2021 v.10 no.6 pp. -
ISSN:
2073-445X
Subject:
agroforestry; collective action; crop rotation; ecosystems; groundwater; groundwater extraction; highlands; paddies; rice; rivers; rodent control; spatial data; spring; springs (water); stakeholders; surveys; water conservation; watersheds; Indonesia
Abstract:
... Production landscapes depend on, but also affect, ecosystem services. In the Rejoso watershed (East Java, Indonesia), uncontrolled groundwater use for paddies reduces flow of lowland pressure-driven artesian springs that supply drinking water to urban stakeholders. Analysis of the water balance suggested that the decline by about 30% in spring discharge in the past decades is attributed for 47 and ...
DOI:
10.3390/land10060586

38. Hydrogeological assessment of springs in the south-central Great Artesian Basin of Australia

Author:
R. J. Fensham; T. Doyle; M. A. Habermehl; B. Laffineur; J. L. Silcock
Source:
Hydrogeology journal 2021 v.29 no.4 pp. 1501-1515
ISSN:
1431-2174
Subject:
basins; confined aquifer; drawdown; groundwater; hydrochemistry; indigenous species; models; pastoralism; sandstone; springs (water); surveys; wetlands; Queensland
Abstract:
... Artesian springs support important wetland ecosystems comprising highly specialised, endemic animal and plant species. Understanding the hydrogeological processes that sustain springs is critical to their management and characterisation of the connected groundwater system. This paper focuses on the springs of the Eulo and Bourke supergroups in the south-central part of the Great Artesian Basin in ...
DOI:
10.1007/s10040-021-02335-x

39. Impact of Rainfall Variability and Land Use Change on River Discharge in South Cameroon

Author:
Valentin Brice Ebodé; Jean Jacques Braun; Bernadette Nka Nnomo; Gil Mahé; Elias Nkiaka; Jean Riotte
Source:
Water 2022 v.14 no.6 pp. -
ISSN:
2073-4441
Subject:
Landsat; autumn; basins; climate change; dry season; flood control; forests; hydrometeorology; land use change; rain; river flow; runoff; spring; springs (water); summer; time series analysis; Cameroon
Abstract:
... Climate change, variability and anthropogenic forcings such as land use change are the main forcings of river discharge variability. However, an understanding of their simultaneous impacts on river discharge remains limited in some parts of the world. To shed light on this issue, the objective of this article is to investigate the effects of rainfall variability and land use change on river discha ...
DOI:
10.3390/w14060941

40. Impacts of Climate Change on Irrigation Water Management in the Babai River Basin, Nepal

Author:
Yogendra Mishra; Mukand Singh Babel; Tai Nakamura; Bhogendra Mishra
Source:
Hydrology 2021 v.8 no.2 pp. -
ISSN:
2306-5338
Subject:
basins; climate; climate change; irrigation management; irrigation water; land use; meteorological data; rain; river flow; river water; springs (water); stream flow; temperature; watersheds; Nepal
Abstract:
... The diminishing spring discharge in the Middle Mountain Zone (MMZ) in Nepal is a matter of concern because it directly affects the livelihoods of low-income farmers in the region. Therefore, understanding the impacts of changes in climate and land-use patterns on water demand and availability is crucial. We investigated the impact of climate change on streamflow and environmental flow, and the dem ...
DOI:
10.3390/hydrology8020085

41. In situ characterization using natural radio-tracers in a submarine freshwater spring, Kiveri, Greece

Author:
C. Tsabaris; V. Zervakis; H. Georga; F.K. Pappa; S. Alexakis; E. Krasakopoulou; D.L. Patiris
Source:
Journal of environmental radioactivity 2021 v.233 pp. 106583
ISSN:
0265-931X
Subject:
cost effectiveness; environmental protection; gamma radiation; groundwater; guidelines; radioactivity; radon; salinity; seawater; spectrometers; spring; springs (water); time series analysis; water temperature; Greece
Abstract:
... A medium resolution underwater gamma ray spectrometer was deployed in the submarine groundwater spring of Anavalos and was combined with conductivity and temperature sensors for continuous measurements of natural radioactivity, salinity and water temperature, respectively. The activity concentrations of radon progenies varied from (5–40) kBq m⁻³, exhibited reverse dependence with salinity and were ...
DOI:
10.1016/j.jenvrad.2021.106583

42. Influence of thick karst vadose zone on aquifer recharge in karst formations

Author:
Ruitong Liu; Jinguo Wang; Hongbin Zhan; Zhou Chen; Weijian Li; Dong Yang; Shiyu Zheng
Source:
Journal of hydrology 2021 v.592 pp. 125791
ISSN:
0022-1694
Subject:
groundwater; groundwater recharge; infiltration rate; karsts; mathematical models; saturated flow; springs (water); surveys; unconfined aquifer; vadose zone
Abstract:
... Vadose zone has been proven as an essential buffer zone for aquifer recharge. However, most previous researches associated with vadose zone influence of groundwater recharge concern granular porous media aquifers. Despite of the massive karst formations on surface of earth, the role of karst vadose zone on affecting recharge to the underneath karst aquifer is largely unknown. The objective of this ...
DOI:
10.1016/j.jhydrol.2020.125791

43. Integrating field work and large-scale modeling to improve assessment of karst water resources

Author:
Andreas Hartmann; Yan Liu; Tunde Olarinoye; Romane Berthelin; Vera Marx
Source:
Hydrogeology journal 2021 v.29 no.1 pp. 315-329
ISSN:
1431-2174
Subject:
aquifers; data collection; databases; groundwater; karsts; land cover; snow; soil water; springs (water); water management; water shortages
Abstract:
... Comprehensive management of karst water resources requires sufficient understanding of their dynamics and karst-specific modeling tools. However, the limited availability of observations of karstic groundwater dynamics has been prohibiting the assessment of karst water resources at regional to global scales. This paper presents the first global effort to integrate experimental approaches and large ...
DOI:
10.1007/s10040-020-02258-z

44. Large-scale climate indices teleconnections with hydrochemical and isotopic characteristics of a karst spring using wavelet analysis

Author:
Abolfazl Rezaei; Masoud Saatsaz
Source:
Environmental earth sciences 2021 v.80 no.8 pp. 335
ISSN:
1866-6280
Subject:
El Nino; climate; hydrochemistry; karsts; spring; springs (water); time series analysis; wavelet; Iran
Abstract:
... This study investigated the large-scale El Niño–Southern Oscillation and Pacific Decadal Oscillation indices teleconnections with the spring chemographs and δ¹⁸O time series in the Sarabkalan Spring, Zagros Mountains, Iran. It was intended to document a karst system by identifying synchrony and coupling between climate indices and its precipitation, spring discharge, chemographs, and isotopes. Her ...
DOI:
10.1007/s12665-021-09636-0

45. Lentic Meadows and Riparian Functions Impaired After Horse and Cattle Grazing

Author:
Jacob Burdick; Sherman Swanson; Sebastian Tsocanos; Sabrina Mccue
Source:
journal of wildlife management 2021 v.85 no.6 pp. 1121-1131
ISSN:
0022-541X
Subject:
Centrocercus urophasianus; Ovis aries; USDA; absorbents; cattle; forage; forests; habitats; herds; horses; land management; lentic systems; livestock husbandry; meadows; public lands; rangelands; riparian vegetation; sediments; soil; soil organic matter; springs (water); vegetation cover; wetland plants; wetlands; wildlife; wildlife management; Nevada
Abstract:
... Perennially and intermittently available water in lentic, spring‐fed herbaceous meadows supports wetland plants that build and maintain absorbent soil organic matter, capture sediment, prevent erosion, and thereby sustain riparian ecosystems. Enhanced forage and available water attract a diversity of wildlife and grazing animals that can degrade riparian vegetation through prolonged overuse. We te ...
DOI:
10.1002/jwmg.22088

46. Long-term trends in karst spring discharge and relation to climate factors and changes

Author:
Francesco Fiorillo; Guido Leone; Mauro Pagnozzi; Libera Esposito
Source:
Hydrogeology journal 2021 v.29 no.1 pp. 347-377
ISSN:
1431-2174
Subject:
North Atlantic Oscillation; Weibull statistics; climate change; hydrologic data; karsts; normal distribution; rain; spring; springs (water); temperature; Italy; Mediterranean region
Abstract:
... Long karst spring discharge series were analyzed to determine trends, fluctuations and relationship to climate. The data came from two karst aquifers, Picentini and Matese massifs in southern Italy, and in some cases cover more than 100 years of records. The long-term hydrological series of these springs aid the understanding of water-resource availability variations under climate change, given th ...
DOI:
10.1007/s10040-020-02265-0

47. Modeling spring flow of an Irish karst catchment using Modflow-USG with CLN

Author:
Lea Duran; Laurence Gill
Source:
Journal of hydrology 2021 v.597 pp. 125971
ISSN:
0022-1694
Subject:
aquifers; computer software; data collection; equations; groundwater; groundwater flow; hydraulic conductivity; hydrologic models; karsts; mathematical models; porous media; spring; springs (water); watersheds; Ireland
Abstract:
... Karst systems present multiple challenges for the application of physically based numerical models, due to the heterogeneity and high spatial variability of their hydrogeological parameters. Some models can face conceptual limitations specific to the karst environment (like equivalent porous medium models). A new version of MODFLOW called MODFLOW-USG (UnStructured Grid) was developed and released ...
DOI:
10.1016/j.jhydrol.2021.125971

48. Morphometric analysis of the channel heads based on different LiDAR resolutions

Author:
Eliza Płaczkowska; Jarosław Cebulski; Maciej Bryndza; Karolina Mostowik; Magdalena Murawska; Bartłomiej Rzonca; Janusz Siwek
Source:
Geomorphology 2021 v.375 pp. 107546
ISSN:
0169-555X
Subject:
drainage; landscapes; lidar; morphometry; principal component analysis; scanners; sediments; soil; springs (water); subsurface flow; uncertainty; Carpathian region
Abstract:
... Due to a small size of channel heads it is difficult to determine their development without direct field measurements. Digital Elevation Models (DEMs) are often used for morphometric analyses of the drainage network in the wider spatial scale. The aim of the article is (1) to determine the possibility of using the high resolution terrain models (based on ALS and TLS) for morphometric analysis of s ...
DOI:
10.1016/j.geomorph.2020.107546

49. Multi-decadal analysis of water resources and agricultural change in a Mediterranean semiarid irrigated piedmont under water scarcity and human interaction

Author:
Youness Ouassanouan; Younes Fakir; Vincent Simonneaux; Mohamed Hakim Kharrou; Houssne Bouimouass; Insaf Najar; Mounia Benrhanem; Fathallah Sguir; Abdelghani Chehbouni
Source:
Science of the total environment 2022 v.834 pp. 155328
ISSN:
0048-9697
Subject:
atmospheric precipitation; climate; environment; groundwater; humans; hydrologic cycle; irrigation; olives; piedmont; spring; springs (water); stream flow; water analysis; water shortages; water table; Mediterranean region; Morocco
Abstract:
... Mediterranean piedmonts are an important hydro-agricultural systems. They constitute the junction between the mountains, where the streamflow is generated, and the surrounding plains, where the water is used. In Morocco, these traditional systems extend largely along the High Atlas Mountains. Yet, changing conditions in the Mediterranean basin as well as recurrent droughts in recent decades remain ...
DOI:
10.1016/j.scitotenv.2022.155328

50. Nitrate vulnerability of karst aquifers and associated groundwater-dependent ecosystems in the Baltic region

Author:
Andis Kalvāns; Konrāds Popovs; Agnese Priede; Oliver Koit; Inga Retiķe; Jānis Bikše; Aija Dēliņa; Alise Babre
Source:
Environmental earth sciences 2021 v.80 no.18 pp. 628
ISSN:
1866-6280
Subject:
agrochemicals; aquifers; carbonates; case studies; cold season; fertilizer application; groundwater; groundwater contamination; habitats; hydrochemistry; karsts; models; nitrates; nitrogen; springs (water); standard deviation; vegetation; Latvia
Abstract:
... Groundwater pollution by agrochemicals such as nitrogen fertilizers can cause complex biogeochemical transformations to take place in groundwater-dependent ecosystems. To explore the interaction between nitrogen load and groundwater-dependent, spring-fed ecosystems, a study was conducted in Latvia in an area of suspected high nitrate (NO₃⁻) vulnerability due to its geological settings. A map of NO ...
DOI:
10.1007/s12665-021-09918-7

51. Numerical model development for investigating hydrologic pathways in shallow fluviokarst

Author:
Nabil Al Aamery; Ethan Adams; James Fox; Admin Husic; Junfeng Zhu; Morgan Gerlitz; Carmen Agouridis; Leonie Bettel
Source:
Journal of hydrology 2021 v.593 pp. 125844
ISSN:
0022-1694
Subject:
aquifers; basins; bedrock; karsts; model validation; riparian areas; rivers; springs (water); uncertainty; vadose zone; Kentucky
Abstract:
... Karst pathways and fluvial pathways control hydrology in shallow fluviokarst basins, and numerical modelling of fluviokarst is seldom reported. In this study, we developed a combined discrete-continuum fluviokarst numerical model by simulating surface river routing, in-stream swallet sources and sinks, epikarst storage and dynamic transfer, matrix bedrock interactions, and closed conduit phreatic ...
DOI:
10.1016/j.jhydrol.2020.125844

52. Quantification of radiological dose and chemical toxicity due to radon and uranium in drinking water in Bageshwar region of Indian Himalaya

Author:
Ankur Kumar; Tushar Arora; Prakhar Singh; Kuldeep Singh; Devendra Singh; P.P. Pathak; R.C. Ramola
Source:
Groundwater for sustainable development 2021 v.12 pp. 100491
ISSN:
2352-801X
Subject:
area; children; dosage; drinking water; electrical conductivity; estimation; groundwater; infants; population density; radon; risk; sampling; solids; spatial distribution; springs (water); statistical analysis; sustainable development; toxicity; uranium; Himalayan region; India
Abstract:
... The present study had an objective to approximate radon and uranium as naturally occurring radioactive constituents in spring-water samples and assessment of AED (annual effective dose), radiological risks; and chemical toxicity, when spring-water is the source of drinking water. Based on the population density in study area (Bageshwar district of Uttarakhand, India), random sampling process was a ...
DOI:
10.1016/j.gsd.2020.100491

53. Seasonal variation in the invertebrate community and diet of a top fish predator in a thermally stable spring

Author:
Agnes-Katharina Kreiling; Eoin J. O’Gorman; Snæbjörn Pálsson; David Benhaïm; Camille A. Leblanc; Jón S. Ólafsson; Bjarni K. Kristjánsson
Source:
Hydrobiologia 2021 v.848 no.3 pp. 531-545
ISSN:
0018-8158
Subject:
Amphipoda; Chironomidae; Salvelinus alpinus; aquatic invertebrates; diet; fish; groundwater; life history; mark-recapture studies; phenotype; seasonal variation; spring; springs (water); summer; thermal stability; water temperature; winter; Iceland
Abstract:
... Many life-history events in aquatic invertebrates are triggered by seasonal changes in water temperature, but other ecological factors may be important as well. To rule out the confounding effects of changing water temperature, we studied the seasonal dynamics of an aquatic invertebrate community and their effect on a top fish predator in a thermally stable freshwater spring in South Iceland. We s ...
DOI:
10.1007/s10750-020-04409-5

54. Sources and behaviors of dissolved sulfate in the Jinan karst spring catchment in northern China identified by using environmental stable isotopes and a Bayesian isotope-mixing model

Author:
Jie Zhang; Menggui Jin; Mingda Cao; Xin Huang; Zhixin Zhang; Lin Zhang
Source:
Applied geochemistry 2021 v.134 pp. 105109
ISSN:
0883-2927
Subject:
Bayesian theory; dissolved sulfates; geochemistry; groundwater; hydrochemistry; karsts; oxidation; pollution; sewage; soil; spring; springs (water); sulfides; surface water; urbanization; watersheds; China
Abstract:
... In recent decades, surface water and groundwater in the Jinan spring catchment have become increasingly contaminated by sulfate due to the expansion of urbanization and the increasing intensity of anthropogenic activities. In this study, ten surface water samples and forty-three groundwater samples were collected in the catchment from June to September 2019, and their hydrochemistry and stable iso ...
DOI:
10.1016/j.apgeochem.2021.105109

55. Spatial coherency of the spring flood signal among major river basins of eastern boreal Canada inferred from flood rings

Author:
A.F. Nolin; J.C. Tardif; F. Conciatori; Y. Bergeron
Source:
Journal of hydrology 2021 v.596 pp. 126084
ISSN:
0022-1694
Subject:
climate change; dams (hydrology); earlywood; hydrologic data; lakes; rivers; spring; springs (water); Canada
Abstract:
... In eastern boreal Canada, long-term perspective in water resources and hydroelectric dam management is currently limited by the lack of long-term hydrological records. The research for new paleohydrological proxies would help fill this hydrological data gap and provide regional hydroclimatic predictive trajectories in the context of climate change. The development of long annually resolved series ...
DOI:
10.1016/j.jhydrol.2021.126084

56. Spatial mapping of groundwater springs potentiality using grid search-based and genetic algorithm-based support vector regression

Author:
A'kif Al-Fugara; Mohammad Ahmadlou; Abdel Rahman Al-Shabeeb; Saad AlAyyash; Hani Al-Amoush; Rida Al-Adamat
Source:
Geocarto international 2022 v.37 no.1 pp. 284-303
ISSN:
1752-0762
Subject:
algorithms; altitude; drainage; groundwater; land use; lithology; models; normalized difference vegetation index; regression analysis; springs (water); streams
Abstract:
... In this study, groundwater springs potentiality maps were prepared using a novel integrated model, support vector regression (SVR) with genetic algorithm (GA), for the Jerash and Ajloun region, Jordan.The conditioning factors such as altitude, aspect, slope angle, plan curvature, stream power index, topographic wetness index, length of slope, distance from drainage network, lithology, distance fro ...
DOI:
10.1080/10106049.2020.1716396

57. Sr and U isotopes reveal the influence of lithologic structure on groundwater contributions along a mountain headwater catchment (Hyalite Canyon, MT)

Author:
Florence R. Miller; Stephanie A. Ewing; Robert A. Payn; James B. Paces; Sam J. Leuthold; Stephan G. Custer
Source:
Journal of hydrology 2021 v.594 pp. 125653
ISSN:
0022-1694
Subject:
Archean eon; aquifers; base flow; chemistry; gneiss; groundwater; runoff; snowpack; springs (water); streams; summer; watersheds; Missouri River
Abstract:
... Changing precipitation patterns are projected to reduce snowpack storage and late summer stream flows in mountain headwaters of the western United States. Ecosystems, agriculture, and municipalities depend on late summer flow in streams supplying water to the mountain front. Therefore, improved understanding of groundwater storage contributions to mountain streams is increasingly important. In thi ...
DOI:
10.1016/j.jhydrol.2020.125653

58. Tracing source and transformation of carbon in an epikarst spring-pond system by dual carbon isotopes (13C[sbnd]14C): Evidence of dissolved CO2 uptake as a carbon sink

Author:
Bo Chen; Min Zhao; Hao Yan; Rui Yang; Hong-Chun Li; Douglas E. Hammond
Source:
Journal of hydrology 2021 v.593 pp. 125766
ISSN:
0022-1694
Subject:
carbon sinks; cold; dissolved carbon dioxide; dissolved inorganic carbon; dry season; dust; emergent plants; hydrochemistry; karsts; limestone; particulate organic carbon; photosynthesis; primary productivity; runoff; soil; soil carbon; spring; springs (water); streams; summer; wet season; China
Abstract:
... δ¹³C and D¹⁴C measurements on dissolved inorganic carbon (DIC), particulate organic carbon (POC) and aquatic plants from a karst spring and two spring-fed ponds in Laqiao, Maolan Township, Libo County, southeastern Guizhou of China in January, July and October of 2013 have been carried out to understand the roles of aquatic photosynthesis through DIC uptake in surface karst waters. The mean D¹⁴C a ...
DOI:
10.1016/j.jhydrol.2020.125766

59. Using δ18O and δ2H to Detect Hydraulic Connection Between a Sinkhole Lake and a First‐Magnitude Spring

Author:
Nur Ahmed; Ming Ye; Yang Wang; Tom Greenhalgh; Karlee Fowler
Source:
Ground water 2021 v.59 no.6 pp. 856-865
ISSN:
0017-467X
Subject:
aquifers; dyes; groundwater; hydrogen; karsts; lakes; oxygen; rain; spring; springs (water); surface water; Florida
Abstract:
... Oxygen and hydrogen isotopes were used in this study to detect a hydraulic connection between a sinkhole lake and a karst spring. In karst areas, surface water that flows to a lake can drain through sinkholes in the lakebed to the underlying aquifer, and then flows in karst conduits and through aquifer matrix. At the study site located in northwest Florida, USA, Lake Miccosukee immediately drains ...
DOI:
10.1111/gwat.13105

60. Vegetation history and human impacts from Thong Pha Phum, western Thailand during the past 700 years

Author:
Paramita Punwong; Apichaya Englong; Paweena Traiperm; Akkaneewut Chabangborn
Source:
Vegetation history and archaeobotany 2021 v.30 no.3 pp. 383-394
ISSN:
0939-6314
Subject:
anthropogenic activities; archaeobotany; charcoal; grasses; history; humans; hydrology; lowland forests; paleoecology; pollen; rain; sediments; springs (water); Thailand
Abstract:
... Palaeoecological analyses including pollen and charcoal analyses on a sediment core (NP3) collected from Nong Pling freshwater spring area in Thong Pha Phum, western Thailand are used to reconstruct past environmental change. The results demonstrate that there were changes in plant composition over the past 700 years resulting from interactions between hydrological conditions in relation to rainfa ...
DOI:
10.1007/s00334-020-00786-y

61. Water abstraction management under climate change: Jadro spring Croatia

Author:
Jure Margeta
Source:
Groundwater for sustainable development 2022 v.16 pp. 100717
ISSN:
2352-801X
Subject:
aquifers; climate; climate change; coasts; groundwater; karsts; risk assessment; spring; springs (water); sustainable development; time series analysis; turbidity; uncertainty; water supply; Croatia
Abstract:
... This study aims to assess the vulnerability of drinking water abstraction in a karst spring in an uncertain future. Karst spring water is an important source of drinking water for the Croatian coastal area and is characterised by a high fluctuation of discharge and turbidity. Various climate models have predicted drier summers, wet winters, and a significant increase in the frequency of extreme ev ...
DOI:
10.1016/j.gsd.2021.100717

62. Water source identification and circulation characteristics of intermittent karst spring based on hydrochemistry and stable isotope—An example from Southern China

Author:
Xulei Guo; Qianlong Chen; He Huang; Zejun Wang; Jingwen Li; Kun Huang; Hong Zhou
Source:
Applied geochemistry 2022 v.141 pp. 105309
ISSN:
0883-2927
Subject:
aquifers; base flow; basins; dolomite; geochemistry; groundwater; groundwater flow; humans; hydrochemistry; hydrogen; hydrologic cycle; hysteresis; karsts; limestone; oxygen; pollution; rain; springs (water); statistical analysis; tourism; China
Abstract:
... An Intermittent karst spring is a particular type of groundwater discharge with periodic groundwater flow processes, but a systematic understanding of its hydrological cycle process is lacking. This study considers the Chaoshuidong Spring (CSD), an intermittent karst spring in China, as an example. Integrated water chemistry and isotope methods were used to identify the recharge sources, migration ...
DOI:
10.1016/j.apgeochem.2022.105309

63. WaterbalANce, a WebApp for Thornthwaite–Mather Water Balance Computation: Comparison of Applications in Two European Watersheds

Author:
Elisa Mammoliti; Davide Fronzi; Adriano Mancini; Daniela Valigi; Alberto Tazioli
Source:
Hydrology 2021 v.8 no.1 pp. -
ISSN:
2306-5338
Subject:
hydrologic cycle; springs (water); streams; water management
Abstract:
... Nowadays, the balance between incoming precipitation and stream or spring discharge is a challenging aspect in many scientific disciplines related to water management. In this regard, although advances in the methodologies for water balance calculation concerning each component of the water cycle have been achieved, the Thornthwaite–Mather method remains one of the most used, especially for hydrog ...
DOI:
10.3390/hydrology8010034

64. Watershed Suspended Sediment Supply and Potential Impacts of Dam Removals for an Estuary

Author:
David K. Ralston; Brian Yellen; Jonathan D. Woodruff
Source:
Estuaries and coasts 2021 v.44 no.5 pp. 1195-1215
ISSN:
1559-2723
Subject:
databases; drainage; erodibility; estuaries; geophysics; inventories; sediment contamination; sediment yield; sediments; springs (water); subwatersheds; suspended sediment; Hudson River
Abstract:
... Observations and modeling are used to assess potential impacts of sediment releases due to dam removals on the Hudson River estuary. Watershed sediment loads are calculated based on sediment-discharge rating curves for gauges covering 80% of the watershed area. The annual average sediment load to the estuary is 1.2 Mt, of which about 0.6 Mt comes from side tributaries. Sediment yield varies invers ...
DOI:
10.1007/s12237-020-00873-3

65. A hundred years of Caposele spring discharge measurements: trends and statistics for understanding water resource availability under climate change

Author:
G. Leone; M. Pagnozzi; V. Catani; G. Ventafridda; L. Esposito; F. Fiorillo
Source:
Stochastic environmental research and risk assessment 2021 v.35 no.2 pp. 345-370
ISSN:
1436-3240
Subject:
Weibull statistics; aquifers; climate change; hydrometeorology; normal distribution; regression analysis; research; risk assessment; springs (water); temperature; time series analysis; Italy
Abstract:
... The 100 year discharge series of the Caposele karst spring in southern Italy enables insight into variations in water resource availability under climate change, given the length of the series, the systematic quality of the records and the absence of human-made alteration of the natural conditions of the aquifer. With this scope, frequency and trend analyses of hydro-meteorological variables were ...
DOI:
10.1007/s00477-020-01908-8

66. A multi-proxy long-term ecological investigation into the development of a late Holocene calcareous spring-fed fen ecosystem (Raganu Mire) and boreal forest at the SE Baltic coast (Latvia)

Author:
Mariusz Gałka; Angelica Feurdean; Thomas G. Sim; Kazimierz Tobolski; Liene Aunina; Karina Apolinarska
Source:
Ecological indicators 2021 v.126 pp. 107673
ISSN:
1470-160X
Subject:
Cladium; Holocene epoch; biodiversity; boreal forests; carbon radioisotopes; coasts; deforestation; dry climates; ecosystems; fens; groundwater; humans; land cover; molluscs; oxygen; paleoecology; peat; peatlands; pollen; springs (water); temperature; watersheds; Baltic Sea; Latvia
Abstract:
... The calcareous substrate of spring-fed fens makes them unique islands of biodiversity, hosting endangered, vulnerable, and protected vascular plants. Hence, spring-fed fens ecosystems require special conservation attention because many of them are destroyed (e.g. drained, forested) and it is extremely difficult or even impossible to restore the unique hydrogeological and geochemical conditions ena ...
DOI:
10.1016/j.ecolind.2021.107673

67. A study of effects of reduction of submarine groundwater discharge on thermal habitats for manatee in a spring-fed estuary using a laterally averaged hydrodynamic model

Author:
XinJian Chen
Source:
Ecological modelling 2021 v.456 pp. 109653
ISSN:
0304-3800
Subject:
air temperature; estuaries; groundwater; heat transfer; hydrodynamics; hydrologic models; rivers; salinity; spring; springs (water); surface area; water temperature; Florida
Abstract:
... Effects of the reduction of submarine groundwater discharge (SGD) on thermal habitats for manatee in the Homosassa River, a spring-fed estuary in Florida, were studied using a laterally averaged hydrodynamic model. The estuary receives its hydrologic loading from numerous spring vents, mainly located at its headwaters and two upstream tributaries. The model was calibrated and verified against real ...
DOI:
10.1016/j.ecolmodel.2021.109653

68. A methodology for the assessment of groundwater resource variability in karst catchments with sparse temporal measurements

Author:
V. Sivelle; H. Jourde
Source:
Hydrogeology journal 2021 v.29 no.1 pp. 137-157
ISSN:
1431-2174
Subject:
aquifers; autocorrelation; basins; electrical conductivity; groundwater; hydrodynamics; karsts; limestone; meteorological data; runoff; spring; springs (water); temperature; time series analysis; watersheds; France
Abstract:
... In karst catchments where only sparse temporal monitoring is performed, it is generally difficult to correctly assess the overall hydrodynamics of the basin. However, sparse temporal spring-discharge data may contain information of major importance for the characterization of such catchments, especially when sparse spring-discharge data over a long period are available and combined with higher fre ...
DOI:
10.1007/s10040-020-02239-2

69. A model ensemble generator to explore structural uncertainty in karst systems with unmapped conduits

Author:
Chloé Fandel; Ty Ferré; Zhao Chen; Philippe Renard; Nico Goldscheider
Source:
Hydrogeology journal 2021 v.29 no.1 pp. 229-248
ISSN:
1431-2174
Subject:
computer software; data collection; groundwater flow; karsts; spatial data; springs (water); stormwater management; uncertainty; Austria; Germany
Abstract:
... Karst aquifers are characterized by high-conductivity conduits embedded in a low-conductivity fractured matrix, resulting in extreme heterogeneity and variable groundwater flow behavior. The conduit network controls groundwater flow, but is often unmapped, making it difficult to apply numerical models to predict system behavior. This paper presents a multi-model ensemble method to represent struct ...
DOI:
10.1007/s10040-020-02227-6

70. Analyzing multi-scale hydrodynamic processes in karst with a coupled conceptual modeling and signal decomposition approach

Author:
Lea Duran; Nicolas Massei; Nicolas Lecoq; Matthieu Fournier; David Labat
Source:
Journal of hydrology 2020 v.583 pp. 124625
ISSN:
0022-1694
Subject:
aquifers; computer software; hydrodynamics; hydrograph; karsts; models; spectral analysis; springs (water); tracer techniques; turbidity; water management; wavelet; France
Abstract:
... More than 25% of the world’s population either lives on or obtains its water from karst aquifers, which makes the understanding of these systems essential for water resources management. However it is often difficult to observe and assess their internal dynamics precisely. In this study we investigated (1) the ability of both conceptual model approach and signal decomposition methods to extract me ...
DOI:
10.1016/j.jhydrol.2020.124625

71. An Application of Correlation and Spectral Analysis in Hydrological Study of Neighboring Karst Springs

Author:
Vesna Denić-Jukić; Ana Lozić; Damir Jukić
Source:
Water 2020 v.12 no.12 pp. -
ISSN:
2073-4441
Subject:
air temperature; correlation; information; karsts; knowledge; rain; relative humidity; spectral analysis; springs (water); water; watersheds; Bosnia-Herzegovina; Croatia
Abstract:
... Various methods of time series analysis have been used in studies of karst hydrological systems. Among these methods, correlation and spectral analysis have had an important role. The correlation analysis most often has been based on determination of correlation coefficients and correlation functions. Partial correlation functions (PCF) are a mathematical tool of the correlation analysis which pra ...
DOI:
10.3390/w12123570

72. Application of extreme gradient boosting and parallel random forest algorithms for assessing groundwater spring potential using DEM-derived factors

Author:
Seyed Amir Naghibi; Hossein Hashemi; Ronny Berndtsson; Saro Lee
Source:
Journal of hydrology 2020 v.589 pp. 125197
ISSN:
0022-1694
Subject:
altitude; case studies; data collection; digital elevation models; evaporation; groundwater; rivers; spring; springs (water); surface water; water shortages; water utilities; Iran
Abstract:
... Groundwater (GW) resources provide a large share of the world’s water demand for various sections such as agriculture, industry, and drinking water. Particularly in the arid and semi-arid regions, with surface water scarcity and high evaporation, GW is a valuable commodity. Yet, GW data are often incomplete or nonexistent. Therefore, it is a challenge to achieve a GW potential assessment. In this ...
DOI:
10.1016/j.jhydrol.2020.125197

73. Applications of a UV optical nitrate sensor in a surface water/groundwater quality field study

Author:
Lee Burbery; Phil Abraham; David Wood; Steve de Lima
Source:
Environmental monitoring and assessment 2021 v.193 no.5 pp. 303
ISSN:
0167-6369
Subject:
agricultural land; automation; data collection; groundwater; nitrates; pollution; spring; springs (water); streams; summer; surface water; water quality; water table; watersheds; winter
Abstract:
... Examples of the utility of UV optical nitrate sensors are provided for two field applications, investigating nitrate pollution in a lowland, peri-urban catchment. In one application, rapid, in-stream longitudinal nitrate surveys were made in summer and winter, by fixing an optical nitrate sensor operating in continuous measurement mode to a kayak that was paddled along 10 km of the mainstem of the ...
DOI:
10.1007/s10661-021-09084-0

74. Assessment of Spring Potential for Sustainable Agriculture: A Case Study in Lesser Himalayas

Author:
Vikram Kumar; Sumit Sen
Source:
Applied engineering in agriculture 2020 v.36 no.1 pp. 11-24
ISSN:
0883-8542
Subject:
agricultural engineering; case studies; crops; drinking water; evapotranspiration; farmers; grain yield; income; input costs; irrigation; land resources; livelihood; mountains; planning; population growth; rain; rice; rural communities; springs (water); sustainable agriculture; water requirement; water security; Himalayan region; India
Abstract:
... With increasing population and restricted water and land resources, there is a growing concern for better planning of the available water and land resources. In the mountainous regions or mountains, there is limited land with uncertain water availability as the rainfall patterns pose a major threat to the livelihood of the people. Therefore, it becomes necessary to quantify and manage the availabl ...
Handle:
10113/6884822
DOI:
10.13031/aea.13520

75. Assessment of the relative impacts of climate changes and anthropogenic forcing on spring discharge of a Mediterranean karst system

Author:
Vianney Sivelle; Hervé Jourde; Daniel Bittner; Naomi Mazzilli; Yves Tramblay
Source:
Journal of hydrology 2021 v.598 pp. 126396
ISSN:
0022-1694
Subject:
climate; climate change; climate models; evolution; groundwater extraction; karsts; spring; springs (water); water supply; watersheds; France; Mediterranean region
Abstract:
... The Mediterranean region is a climate change hotspot where the rate of climate change exceeds the global mean. The rapidly changing climate in combination with an increase in anthropogenic pressures cause water resources in the Mediterranean basin to become increasingly scarce. Modelling future water resource availability considering both climate and anthropogenic changes on karst catchments remai ...
DOI:
10.1016/j.jhydrol.2021.126396

76. The Banning of Bromacil in Costa Rica

Author:
Bernal E. Valverde; Lilliana Chaves
Source:
Weed science 2020 v.68 no.3 pp. 240-245
ISSN:
0043-1745
Subject:
Ananas comosus; Citrus; broadleaf weeds; bromacil; drinking water; fruit growing; grasses; groundwater; half life; lithium; orchards; pineapples; soil; springs (water); surface water; surveys; wells; Caribbean; Costa Rica
Abstract:
... Bromacil was introduced at the beginning of the 1960s for PRE and early POST control of grasses and broadleaf weeds, particularly in citrus (Rutaceae spp.) orchards and pineapple [Ananas comosus (L.) Merr.] plantations as well as in noncultivated areas. Both the acidic form of bromacil and its lithium salt are highly soluble in water; the herbicide is moderately to highly persistent in the soil wi ...
DOI:
10.1017/wsc.2020.13

77. Biogeochemical and physical controls on the evolution of dissolved inorganic carbon (DIC) and δ13CDIC in karst spring-waters exposed to atmospheric CO2(g): Insights from laboratory experiments

Author:
Yongjun Jiang; Jiaqi Lei; Liuchan Hu; Qiong Xiao; Jinliang Wang; Cheng Zhang; Hendratta Ali
Source:
Journal of hydrology 2020 v.583 pp. 124294
ISSN:
0022-1694
Subject:
Hydrilla verticillata; carbon cycle; carbon dioxide; carbon sinks; carbonates; dissolved inorganic carbon; karsts; laboratory experimentation; lakes; models; organic carbon; photosynthesis; springs (water); streams; submerged aquatic plants; surface water; uncertainty; weathering
Abstract:
... Karst waters (spring-fed streams, lakes and reservoirs) characterized by relatively high concentrations of dissolved inorganic carbon (DIC) and pCO₂ significantly impact regional and global carbon cycles by releasing carbon dioxide to the atmosphere. Investigating the transfer of DIC from karst waters to the atmosphere is important to further our understanding of carbon cycling in karst environmen ...
DOI:
10.1016/j.jhydrol.2019.124294

78. Calculating man-made depletion of a stressed multiple aquifer resource on a national scale

Author:
Tino Rödiger; Fabien Magri; Stefan Geyer; Ulf Mallast; Taleb Odeh; Christian Siebert
Source:
Science of the total environment 2020 v.725 pp. 138478
ISSN:
0048-9697
Subject:
aquifers; arid zones; atmospheric precipitation; base flow; basins; fossils; groundwater; groundwater extraction; groundwater recharge; hydrologic models; long term effects; mountains; saline water; springs (water); water shortages; Jordan
Abstract:
... An inexorable depletion of groundwater occurs where groundwater abstraction exceeds the natural recharge, a typical state of (semi-)arid regions, which calls for sustainable management of groundwater resources. This study aims to assess the available storage and recharge rates on a national scale in time and space by modelling the natural recharge in combination with a method to evaluate changing ...
DOI:
10.1016/j.scitotenv.2020.138478

79. Characterization of the hydrodynamic functioning of the Degracias-Sicó Karst Aquifer, Portugal

Author:
Isabel Paiva; Lúcio Cunha
Source:
Hydrogeology journal 2020 v.28 no.7 pp. 2613-2629
ISSN:
1431-2174
Subject:
aquifers; base flow; case studies; electrical conductivity; hydrodynamics; karsts; quantitative analysis; rain; spring; springs (water); temperature; time series analysis; Portugal
Abstract:
... A study on the complex processes of hydrogeological transformation of recharge into discharge within a karst system is described. Given the absence of boreholes or points of direct observation, the applied methodology is based on study of the natural response of the main outlet of the karst aquifer, considered here as a black-box. Time series analysis and recession curve analysis are applied to da ...
DOI:
10.1007/s10040-020-02201-2

80. Chemistry of the Karst Sarabkalan Spring, Iran, and Controls of PDO and ENSO Climate Indices on It

Author:
Abolfazl Rezaei
Source:
Ground water 2021 v.59 no.2 pp. 236-244
ISSN:
0017-467X
Subject:
El Nino; algorithms; aquifers; climate; dry season; electrical conductivity; groundwater; ionic strength; irrigation; karsts; rain; spring; springs (water); water supply; wavelet; Iran; Pacific Ocean
Abstract:
... The Sarabkalan Spring serves as a primary water supply to irrigation and domestic use in the Sirvan Region, Iran. As it has a highly variable discharge, understanding its teleconnections with large‐scale climate variability is crucial. In this study, we first characterize the springshed and its corresponding karst aquifer system using genetic algorithm analysis on the spring discharge, water balan ...
DOI:
10.1111/gwat.13034

81. Climate Control of Multidecadal Variability in River Discharge and Precipitation in Western Europe

Author:
Isabel Jalón-Rojas; Bruno Castelle
Source:
Water 2021 v.13 no.3 pp. -
ISSN:
2073-4441
Subject:
North Atlantic Oscillation; atmospheric precipitation; autumn; climate; river flow; springs (water); water; water storage; watersheds; Central European region; France; Western European region
Abstract:
... The influence of large-scale climate variability on winter river discharge and precipitation across western Europe is investigated. We analyze 60 years of monthly precipitation and river flow data from 18 major western-European rivers and its relationship with dominant teleconnection patterns and climate indices in this region. Results show that winter river flow is characterized by large interann ...
DOI:
10.3390/w13030257

82. Climate variability and implications for keeping rivers cool in England

Author:
R.L. Wilby; M.F. Johnson
Source:
Climate risk management 2020 v.30 pp. 100259
ISSN:
2212-0963
Subject:
North Atlantic Oscillation; altitude; aquifers; calibration; climate; climate change; dynamics; environmental health; field experimentation; information; models; monitoring; regression analysis; risk assessment; risk management; rivers; shade; springs (water); summer; water temperature; watersheds; England
Abstract:
... Water temperature (Tw) is a primary determinant of river ecosystem health and function that is strongly controlled by climate variability and change but mediated by catchment properties. We apply a nested analysis to: (1) evaluate how annual and seasonal mean Tw varied across England during the period 2000–2018; (2) assess the extent to which these regional-temporal dynamics correlate with the Nor ...
DOI:
10.1016/j.crm.2020.100259

83. Combined use of stable isotopes and hydrochemical characteristics to determine streamflow sources in the Jonkershoek catchment, South Africa

Author:
Retang A. Mokua; Julia Glenday; Jacobus Nel; Mike Butler
Source:
Isotopes in environmental and health studies 2020 v.56 no.3 pp. 238-259
ISSN:
1477-2639
Subject:
base flow; dry season; electrical conductivity; evaporation; fynbos; groundwater; hydrochemistry; land cover; mountains; pH; rain; springs (water); streams; subsurface flow; subwatersheds; water management; wet season; South Africa
Abstract:
... The stable isotopes of water (¹⁸O, ²H) and other hydrochemical properties were used to assess seasonal changes between sources of stream water and flow pathways in baseflow conditions for two headwater sub-catchments (∼3 km²) of the Jonkershoek, a mountainous catchment in the Western Cape of South Africa. The sub-catchments differ in land cover, one is dominated by indigenous fynbos vegetation and ...
DOI:
10.1080/10256016.2020.1760861

84. Combining implicit geological modeling, field surveys, and hydrogeological modeling to describe groundwater flow in a karst aquifer

Author:
Fernando M. D’Affonseca; Michael Finkel; Olaf A. Cirpka
Source:
Hydrogeology journal 2020 v.28 no.8 pp. 2779-2802
ISSN:
1431-2174
Subject:
Triassic period; aquifers; carbon dioxide; fluid mechanics; groundwater flow; hydrologic models; karsts; limestone; mathematical models; risk assessment; springs (water); tectonics; water supply; Germany
Abstract:
... In three-dimensional (3-D) implicit geological modeling, the bounding surfaces between geological units are automatically constructed from lithological contact data (position and orientation) and the location and orientation of potential faults. This approach was applied to conceptualize a karst aquifer in the Middle Triassic Muschelkalk Formation in southwest Germany, using digital elevation data ...
DOI:
10.1007/s10040-020-02220-z

85. Comparative Investigation of Aquatic Invertebrates in Springs in Münsterland Area (Western Germany)

Author:
Sura Abdulghani Alqaragholi; Wael Kanoua; Patricia Göbel
Source:
Water 2021 v.13 no.3 pp. -
ISSN:
2073-4441
Subject:
detritus; dissolved oxygen; groundwater; rain; springs (water); variance; water table; Germany
Abstract:
... The main aim of this study was to investigate the abundance of invertebrates in groundwater in relation to groundwater conditions (groundwater table, discharge, rainfall, and physio-chemical parameters), and to examine the suitable time for invertebrate sampling in springs. Thus, eight springs in two separate study areas, “Baumberge” and “Schöppinger Berg” (Münsterland area, North-Rhine Westphalia ...
DOI:
10.3390/w13030359

86. Comparison between Periodic Tracer Tests and Time-Series Analysis to Assess Mid- and Long-Term Recharge Model Changes Due to Multiple Strong Seismic Events in Carbonate Aquifers

Author:
Davide Fronzi; Diego Di Curzio; Sergio Rusi; Daniela Valigi; Alberto Tazioli
Source:
Water 2020 v.12 no.11 pp. -
ISSN:
2073-4441
Subject:
aquifers; carbonates; geophysics; groundwater; groundwater flow; hydraulic conductivity; hydrodynamics; springs (water); time series analysis; water management; Italy
Abstract:
... Understanding the groundwater flow in carbonate aquifers represents a challenging aspect in hydrogeology, especially when they have been struck by strong seismic events. It has been proved that large earthquakes change springs hydrodynamic behaviour showing transitory or long-lasting variations and making their management much more difficult. This is the case of Sibillini Massif (central Italy), w ...
DOI:
10.3390/w12113073

87. Conservation of the cienega endemic, eryngium sparganophyllum hemsl. (apiaceae)

Author:
J. C. Stromberg; E. Makings; D. E. Brown; D. Wolkis
Source:
Southwestern naturalist 2020 v.65 no.2 pp. 173-184
ISSN:
0038-4909
Subject:
Eryngium; canopy; dormancy; drought; fecundity; flowers; geographical distribution; groundwater; habitats; invertebrates; life history; plant establishment; springs (water); survival rate; temperature; trees; viability; Arizona; Mexico
Abstract:
... Eryngium sparganophyllum is an imperiled plant species with a small geographic range in the southwestern United States and northern Mexico and is restricted to wetlands known as cienegas. We compiled information on its population status, habitat, life history, and threats to inform conservation and recovery efforts and to guide future research. Of the six historically documented populations, this ...
DOI:
10.1894/0038-4909-65.2.173

88. Cyanobacterial Mats in Calcite-Precipitating Serpentinite-Hosted Alkaline Springs of the Voltri Massif, Italy

Author:
Aysha Kamran; Kathrin Sauter; Andreas Reimer; Theresa Wacker; Joachim Reitner; Michael Hoppert
Source:
Microorganisms 2020 v.9 no.1 pp. -
ISSN:
2076-2607
Subject:
Oscillatoriales; Pseudanabaenaceae; carbonates; environmental DNA; high-throughput nucleotide sequencing; microbial communities; microorganisms; pH; sediments; serpentinite; spring; springs (water); streams; water; Italy
Abstract:
... (1) Background: Microbial communities in terrestrial, calcifying high-alkaline springs are not well understood. In this study, we investigate the structure and composition of microbial mats in ultrabasic (pH 10–12) serpentinite springs of the Voltri Massif (Italy). (2) Methods: Along with analysis of chemical and mineralogical parameters, environmental DNA was extracted and subjected to analysis o ...
DOI:
10.3390/microorganisms9010062

89. Decadal scale recharge-discharge time lags from aquifer freshwater-saltwater interactions

Author:
Harald Klammler; James W. Jawitz; Michael D. Annable; J. Antonio Yaquian; Kirk Hatfield; Patrick Burger
Source:
Journal of hydrology 2020 v.582 pp. 124514
ISSN:
0022-1694
Subject:
aquifers; equations; freshwater; groundwater; groundwater recharge; models; rain; saline water; springs (water); water management; Florida
Abstract:
... Coastal aquifers are an important freshwater resource for significant portions of the global population. Understanding the dynamic relationship between aquifer recharge, storage and discharge is fundamental for sustainable groundwater management. Here we present an expanded freshwater balance equation that considers the dynamic interaction between fresh groundwater and underlying saltwater through ...
DOI:
10.1016/j.jhydrol.2019.124514

90. Development of a quantitative transport-time-based groundwater vulnerability model for non-point-source pollution in karst aquifers: a conceptual approach and example from the Tanour and Rasoun spring catchment, north-western Jordan

Author:
Ibraheem Hamdan; Thomas Ptak; Bettina Wiegand; Martin Sauter
Source:
Hydrogeology journal 2020 v.28 no.3 pp. 1091-1106
ISSN:
1431-2174
Subject:
aquifers; base flow; ephemeral streams; geographic information systems; groundwater; groundwater flow; groundwater recharge; hydraulic conductivity; karsts; nonpoint source pollution; oxygen; risk assessment; solutes; springs (water); stable isotopes; stream channels; topography; vadose zone; watersheds; Jordan
Abstract:
... A quantitative transport-time-based vulnerability assessment approach for non-point-source pollution using a spatially distributed geographic information system (GIS)-generated topographic model was developed for the karst aquifer system feeding the Tanour and Rasoun springs in NW Jordan. The approach implies the assessment of the groundwater residence times in different compartments of the karst ...
DOI:
10.1007/s10040-019-02094-w

91. Different Waters for Different Performances: Can We Imagine Sport-Related Natural Mineral Spring Waters?

Author:
Valentina Presta; Luca Ambrosini; Cecilia Carubbi; Elena Masselli; Prisco Mirandola; Maria Luisa Arcari; Giuliana Gobbi; Marco Vitale
Source:
Water 2021 v.13 no.2 pp. -
ISSN:
2073-4441
Subject:
body water; human health; rehydration; sports; springs (water); water
Abstract:
... Preserving the hydration status means to balance daily fluids and salt losses with gains, where the losses depend on several physiological and environmental factors. Especially for athletes, these losses could be relevant and negatively influence the performance: therefore, their hydro-saline status must be preserved with personalized pre- and rehydration plans all along the performance period. Sc ...
DOI:
10.3390/w13020166

92. Drivers and projections of vegetation loss in the Pantanal and surrounding ecosystems

Author:
Angélica Guerra; Fabio de Oliveira Roque; Letícia Couto Garcia; José Manuel Ochoa-Quintero; Paulo Tarso Sanches de Oliveira; Rafael Dettogni Guariento; Isabel M.D. Rosa
Source:
Land use policy 2020 v.91 pp. 104388
ISSN:
0264-8377
Subject:
cerrado; cities; deforestation; ecosystems; environmental law; indigenous species; issues and policy; land use change; landscapes; models; rivers; roads; springs (water); tropics; watersheds; wetlands; Brazil; Pantanal; Paraguay River
Abstract:
... Modeling scenarios can help identify drivers of and potential changes in land use, particularly in rapidly changing landscapes such as the tropics. One of the places where most of the recent anthropogenic land use changes have been occurring is the "arc of deforestation" of the Amazon, where several scenarios have been constructed. Such modeling scenarios, however, have been implemented less frequ ...
DOI:
10.1016/j.landusepol.2019.104388

93. Ecological interactions and the distribution, abundance, and diversity of ostracod species associated with some coastal brackish karstic springs in southwest Turkey

Author:
Selçuk Altınsaçlı; Ferda Perçin-Paçal; Songül Altınsaçlı
Source:
Regional studies in marine science 2020 v.35 pp. 101204
ISSN:
2352-4855
Subject:
Ostracoda; aquifers; brackish water; coasts; correspondence analysis; ecological competition; environmental factors; fauna; multivariate analysis; salinity; species diversity; springs (water); water flow; Aegean Sea; Turkey (country)
Abstract:
... Ostracod species obtained from five coastal karstic brackish water springs on the Aegean Sea coastline were evaluated using multivariate statistical methods. Information on the diversity and distribution of ostracod fauna associated with coastal brackish karstic springs and on the ecological factors affecting them was obtained. A total of eight ostracod species were identified in five karstic brac ...
DOI:
10.1016/j.rsma.2020.101204

94. Ecotoxicological Analyses of Springs of a Brazilian Northeast Conservation Unit

Author:
Elielma Lima de Sousa; Natália Jovita Pereira; Janderson Bruzaca Gomes; Margareth Marques dos Santos; Débora Martins Silva Santos
Source:
Bulletin of environmental contamination and toxicology 2020 v.104 no.1 pp. 27-34
ISSN:
0007-4861
Subject:
Danio rerio; ecotoxicology; erythrocytes; exposure duration; fish; gills; histology; micronucleus tests; pollutants; springs (water); toxicity
Abstract:
... Ecotoxicological assessment is an useful tool to evaluate toxicity of pollutants on aquatic organisms. In the present study, we evaluated the lethal effect, micronucleus frequency and histological changes in gills of fish species Danio rerio exposed to water from two sources of a Conservation Unit. We performed acute tests, Micronucleus Test in blood cells and histological analysis of gills. As re ...
DOI:
10.1007/s00128-019-02757-0

95. The Effects of Exchange Flow on the Karst Spring Hydrograph under the Different Flow Regimes: A Synthetic Modeling Approach

Author:
Malihe Shirafkan; Zargham Mohammadi; Vianney Sivelle; David Labat
Source:
Water 2021 v.13 no.9 pp. -
ISSN:
2073-4441
Subject:
base flow; hydraulic conductivity; hydrograph; karsts; models; spring; springs (water); water
Abstract:
... In this study, a synthetic modeling approach is proposed to quantify the effect of the amount and direction of the exchange flow on the karstic spring discharge fluctuations under different hydrologic conditions corresponding to high and low flow conditions. We hypothesis that the spring discharge fluctuations constitute a valuable proxy to understand the internal processes of the karst system. An ...
DOI:
10.3390/w13091189

96. Effects of land use on groundwater recharge of a loess terrace under long-term irrigation

Author:
Qiang Xu; Kuanyao Zhao; Fangzhou Liu; Dalei Peng; Wanlin Chen
Source:
Science of the total environment 2021 v.751 pp. 142340
ISSN:
0048-9697
Subject:
data collection; electrical resistance; environment; flood irrigation; fruit trees; groundwater recharge; irrigation rates; land use; loess; spring; springs (water); tomography; vegetables; water table
Abstract:
... Understanding the relation between land use and groundwater recharge is of direct interest in areas that are prone to geohazards. This study was performed to characterize the effects of land use on groundwater table (GWT) distribution in the Heifangtai (HFT) loess terrace under long-term flood irrigation, as irrigation intensity was governed by the crop types. In light of the regional temperature- ...
DOI:
10.1016/j.scitotenv.2020.142340

97. An Enhanced Approach to the Spatial and Statistical Analysis of Factors Influencing Spring Distribution on a Transboundary Karst Aquifer

Author:
Veronika Iván; Stefania Stevenazzi; Licia C. Pollicino; Marco Masetti; Judit Mádl-Szőnyi
Source:
Water 2020 v.12 no.8 pp. -
ISSN:
2073-4441
Subject:
aquifers; decision making; flow; groundwater flow; karsts; knowledge; landscapes; spring; springs (water); statistical analysis; water
Abstract:
... Karst aquifers are indispensable, yet vulnerable, resources; therefore, they require a comprehensive protection strategy. Since springs are the terminal points of the karst flow systems, knowledge of their distribution is a key element for the better understanding of groundwater flow, availability and vulnerability. The present study aims to introduce a data-driven analysis by the application of a ...
DOI:
10.3390/w12082133

98. Evaluation and Quantification of the Effects of Climate and Vegetation Cover Change on Karst Water Sources: Case Studies of Two Springs in South-Western Slovenia

Author:
Gregor Kovačič; Metka Petrič; Nataša Ravbar
Source:
Water 2020 v.12 no.11 pp. -
ISSN:
2073-4441
Subject:
climate; effective precipitation; forests; freshwater; groundwater recharge; hydrometeorology; karsts; models; soil water balance; spring; springs (water); vegetation cover; warm season; water management; Slovenia
Abstract:
... Karst aquifers hold important water resources such as regional water budgets and freshwater supply. Due to highly dynamic hydrological processes in comparison to other less permeable systems, they are particularly susceptible to environmental changes. However, little research directly characterizes the impacts of climate and vegetation cover changes on karst water sources. In this study, we aimed ...
DOI:
10.3390/w12113087

99. Evidence for a winter-snowpack derived water source for the Fremont maize farmers of Range Creek Canyon, Utah, USA

Author:
Isaac Alfred Hart; Joan Brenner-Coltrain; Shannon Boomgarden; Andrea Brunelle; Larry Coats; Duncan Metcalfe; Michael Lewis
Source:
Holocene 2021 v.31 no.3 pp. 446-456
ISSN:
1477-0911
Subject:
Holocene epoch; charcoal; corn; dendrochronology; geochemistry; infrastructure; irrigation; meadows; monsoon season; pollen; profitability; runoff; sediments; springs (water); stable isotopes; streams; summer; Utah
Abstract:
... We present results of multiproxy analysis of a sediment core collected from Billy Slope Meadow, a spring-fed wet meadow in Range Creek Canyon, Utah. Range Creek Canyon was the home to Fremont maize farmers between roughly 1200 and 800 cal BP (AD 750–1150). Stable carbon isotope analysis of core sediments from Billy Slope Meadow indicate the Billy Slope Meadow site was used as a field for maize agr ...
DOI:
10.1177/0959683620972767

100. Evidence for intra-plate seismicity from spring-carbonate mound springs in the Kati Thanda–Lake Eyre region, South Australia: implications for groundwater discharge from the Great Artesian Basin

Author:
Mark N. Keppel; Karl Karlstrom; Laura Crossey; Andrew J. Love; Stacey Priestley
Source:
Hydrogeology journal 2020 v.28 no.1 pp. 297-311
ISSN:
1431-2174
Subject:
aquifers; basins; deformation; groundwater; groundwater flow; springs (water); tectonics; South Australia
Abstract:
... The relationship between fault structures and Great Artesian Basin (GAB) spring occurrence has rarely been discussed in relation to intra-plate seismicity. This is despite the occurrence of mound springs in the southwest portion of the GAB in South Australia being previously linked with the occurrence of faulting and the many studies concerning the role that tectonics plays in the formation and on ...
DOI:
10.1007/s10040-019-02049-1