Results 51 to 60 of about 1,711 (184)

A Structured Review of Selenium Pollution in Global Aquatic Environments: Sources, Levels, and Co‐Pollutants

Environmental Quality Management, Volume 35, Issue 4, Summer 2026.
ABSTRACT Despite its nutritional and industrial significance, selenium (Se) is considered a pollutant in aquatic environments owing to its toxicity at elevated concentrations, which potentially cause environmental degradation and adverse health effects in humans and local biota.
Jorge Enrique Ascencio‐Damian, Daisuke Inoue, Michihiko Ike   +2 more
wiley   +1 more source

Hydrogeochemical Dynamics and Response of Karst Catchment to Rainstorms in a Critical Zone Observatory (CZO), Southwest China

Frontiers in Water, 2020
Karst water is vital for local drinking and irrigation but is susceptible to contamination. Hydrochemistry, which is highly related to carbonate weathering in karst catchments, can affect water quality and respond rapidly to climate change.
Caiqing Qin, Caiqing Qin, Hu Ding, Si-Liang Li, Si-Liang Li, Si-Liang Li, Fu-Jun Yue, Zhong-Jun Wang, Jie Zeng   +8 more
doaj   +1 more source

Anomalous Sample Detection Tool and Its Application in Identifying Interbasin Groundwater Flow in the Yarlung Zangbo River Basin, Tibetan Plateau

Water Resources Research, Volume 62, Issue 6, June 2026.
Abstract Interbasin groundwater flow (IGF) is increasingly recognized as an important but difficult‐to‐diagnose component of regional groundwater flow systems. Recent studies highlight that major rifts within the Yarlung Zangbo River Basin (YZRB) may facilitate IGF, but the role of all six major rifts remains unclear.
Jianxin Chen, Xingxing Kuang, Linfeng Fan, Jipeng Shan, Xiaoyan Shi, Yuqing Feng, Chunmiao Zheng   +6 more
wiley   +1 more source

Microbial and Geochemical Evidence of Permafrost Formation at Mamontova Gora and Syrdakh, Central Yakutia

Frontiers in Earth Science, 2021
Biotracers marking the geologic history and permafrost evolution in Central Yakutia, including Yedoma Ice Complex (IC) deposits, were identified in a multiproxy analysis of water chemistry, isotopic signatures, and microbial datasets.
M. Yu. Cherbunina, E. S. Karaevskaya, Yu. K. Vasil’chuk, N. I. Tananaev, D. G. Shmelev, N. A. Budantseva, A. Y. Merkel, A. L. Rakitin, A. V. Mardanov, A. V. Brouchkov, S. A. Bulat, S. A. Bulat   +11 more
doaj   +1 more source

Stream Temperature Response to Increased Shading Due To Riparian Shrubification in Northern Latitudes

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 6, June 2026.
Abstract Global warming is causing rapid and profound impacts on northern ecosystems. Shifting precipitation, permafrost thaw, and rapid shrub advance into tundra environments are combining to alter stream temperature in uncertain ways. The expansion and increased abundance of shrub vegetation, termed shrubification, may moderate warming stream ...
Andras J. Szeitz, Cory A. Wallace, Faye L. Jackson, Iain A. Malcolm, David M. Hannah, Sean K. Carey   +5 more
wiley   +1 more source

Spatial and Temporal Patterns of Alkalinity in an Alpine Headwater Stream Network: Linking Catchment Heterogeneity to Carbon Dynamics

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 6, June 2026.
Abstract Alkalinity is a key regulator of carbon dioxide (CO2 ${\text{CO}}_{2}$) dynamics in freshwater systems, influencing both dissolved inorganic carbon speciation and the buffering capacity of water. Despite its importance, alkalinity in freshwater environments remains comparatively underexplored relative to ocean systems.
Francesco Presotto, Giulia Grandi, Rossano Piazza, Paolo Girardi, Enrico Bertuzzo   +4 more
wiley   +1 more source

Bio‐mediated cementation of supratidal beach sediments associated with groundwater springs

Sedimentology, Volume 73, Issue 4, Page 1271-1285, June 2026.
ABSTRACT The formation of beachrock, sensu stricto, via carbonate precipitation in the intertidal zone is widespread throughout the tropics and subtropics. While cementation of supratidal beach sediments has also been noted in several locations, it has received much less attention.
Thomas William Garner, J. Andrew G. Cooper   +1 more
wiley   +1 more source

MISS diversity from saline lakes of Brazilian Pantanal: Origin, potential of preservation and comparison with examples of the Ediacaran‐Cambrian shallow depositional settings

Sedimentology, Volume 73, Issue 4, Page 945-964, June 2026.
ABSTRACT One of the largest wetlands on Earth, the Brazilian Pantanal contains roughly 10 000 natural lakes, about 1000 of which are hypersaline. In these environmentally stressful settings, animal life struggles to survive, while cyanobacteria form extensive mats.
Lucas V. Warren, Filipe G. Varejão, Lucas Inglez, Maria Julia Arrouy, Beatriz Christofoletti, Mario L. Assine   +5 more
wiley   +1 more source

Plastic Pollution in the Aquatic Ecosystem of the High-Mountain Lake Markakol (Kazakhstan): First Observations and Conclusions

Applied Sciences
The primary data of micro- and macroplastics in the aquatic environment of Lake Markakol, located in the mountainous area of East Kazakhstan, are presented.
Azamat Madibekov, Laura Ismukhanova, Christian Opp, Botakoz Sultanbekova, Askhat Zhadi, Serik Zhumatayev, Aisha Madibekova   +6 more
doaj   +1 more source

Radon‐222 as an Effective Tracer to Distinguish Groundwater Circulation Patterns in the Deep Fault‐Controlled Geothermal System

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract Groundwater flow regulated by deep faults remains challenging to trace due to structural complexity. This study applies the noble gas tracer 222Rn combined with hydrochemistry and stable isotopes (δ2H, δ18O) to distinguish circulation patterns of geothermal springs along a major fault in the Tibetan Plateau.
Xiaoyan Shi, Xingxing Kuang, Meizhuang Zhu, Linfeng Fan, Xinkang Wang, Gexi Zheng, Yinlei Hao, Chunmiao Zheng   +7 more
wiley   +1 more source