Article
Environmental Sciences
Bin Li, Yi Zheng, Giuliano Di Baldassarre, Peng Xu, Saket Pande, Murugesu Sivapalan
Summary: This study explores the groundwater vulnerability of Beijing and investigates the impact of human response on the groundwater-population-economy system. The results show that rapid economic development and larger precipitation may lead to short-term recovery of groundwater table but contribute to more severe depletion in the long run. Strengthening policymakers' views on groundwater depletion and improving labor force input can effectively reduce groundwater vulnerability.
WATER RESOURCES RESEARCH
(2023)
Article
Environmental Sciences
Zhihao Xu, Yunying Li, Ximing Cai, Yanpeng Cai, Zhifeng Yang
Summary: Reservoir operation policies have complex influences on sediment methane production and pathways. This study combines a physical-biogeochemical model with a reservoir operation model to evaluate operation impacts on sediment methane production and release dynamics. The results show that reservoir operations significantly impact methane pathways and atmospheric emissions.
WATER RESOURCES RESEARCH
(2023)
Article
Environmental Sciences
Hongfan Cao, Seonkyoo Yoon, Zhenyu Xu, Laura J. Pyrak-Nolte, Etienne Bresciani, Peter K. Kang
Summary: This study investigates the mixing and transport of variable-density fluids in vertical fractures through experimental and numerical methods. The emergence of an unstable focused flow path, known as a runlet, is observed in laboratory experiments and successfully reproduced using 3D numerical simulations. The underlying mechanisms triggering the runlet are elucidated through dimensionless number analysis and flow topology analysis. The findings have direct implications for managing groundwater resources and subsurface applications.
WATER RESOURCES RESEARCH
(2023)
Article
Environmental Sciences
L. Innocenti, E. Blade, M. Sanz-Ramos, V. Ruiz-Villanueva, L. Solari, J. Aberle
Summary: In recent years, there has been increasing interest in the modeling of large wood transport in rivers. However, existing models often neglect the effects of secondary currents on wood trajectories in river bends. This study enhances a numerical model to simulate the effects of secondary currents on wood trajectories, and validates the proposed approach through laboratory experiments.
WATER RESOURCES RESEARCH
(2023)
Article
Environmental Sciences
M. W. Mcgauley, A. Amur, M. Shakya, B. M. Wadzuk
Summary: This study demonstrates that green stormwater infrastructure, specifically a rain garden, can achieve a degree of natural hydrology and highlights the necessity of long-term monitoring for performance assessment and variability analysis.
WATER RESOURCES RESEARCH
(2023)
Article
Environmental Sciences
Runze Zhang, Seokhyeon Kim, Hyunglok Kim, Bin Fang, Ashish Sharma, Venkataraman Lakshmi
Summary: This study presents a method using observed data to fill temporal gaps in satellite-based soil moisture products, resulting in a continuous and high-quality soil moisture product. By utilizing a water balance equation and precipitation observations, the generated 12-hourly soil moisture product exhibits excellent performance, aiding in the understanding of land-surface hydrology.
WATER RESOURCES RESEARCH
(2023)
Article
Environmental Sciences
Mohamed Elmorsy, Wael El-Dakhakhni, Benzhong Zhao
Summary: Subsurface processes play a crucial role in addressing major challenges such as sustainable extraction of hydrocarbons, carbon dioxide sequestration, and renewable energy storage. This study presents a novel analytical solution and physics-informed neural network models for accurate permeability prediction and upscaling of three-dimensional digital rock samples. The combination of these models showcases the potential of machine learning in rapid analysis of digital rocks at the core-scale.
WATER RESOURCES RESEARCH
(2023)
Article
Environmental Sciences
Anne E. Tamalavage, Peter J. van Hengstum, Sarah J. Feakins, Shawna N. Little, Sloan Coats, Tyler S. Winkler, Richard M. Sullivan, Patrick Louchouarn, Jeffrey P. Donnelly, Nancy A. Albury
Summary: By using a multiproxy approach, we reconstructed evidence for paleolimnology and regional hydroclimate changes based on sediment samples from a sinkhole in the northern Bahamas. The findings indicate significant shifts in sea level, sediment deposition, and hydroclimate conditions throughout the Holocene period. However, further research is needed to identify the specific drivers of these changes.
JOURNAL OF PALEOLIMNOLOGY
(2023)
Article
Limnology
Johannes West, Diana Babi, Alyssa Azaroff, Sofi Jonsson
Summary: This paper evaluates and develops different analytical and experimental approaches to quantify and use dimethylmercury (DMHg) in laboratory studies. It demonstrates that DMHg can be analyzed using specific derivatization and masking methods. Additionally, suitable subsampling techniques for DMHg-containing solutions and experimental data on long-term stability are presented.
LIMNOLOGY AND OCEANOGRAPHY-METHODS
(2023)
Article
Limnology
Sebastian D. Rokitta, Christian H. Grossmann, Elisa Werner, Jannika Moye, Giulia Castellani, Eva-Maria Noethig, Bjoern Rost
Summary: The responses of Arctic Phaeocystis pouchetii solitary cells to temperature, light intensity, and pCO2 were assessed. Elevated temperature had the most pronounced impacts on growth, elemental quotas, and photosynthetic performance. Light stimulations were more prominent under lower temperatures. pCO2 had the least effect. The results suggest that global warming accelerates bloom dynamics of Phaeocystis, which may have substantial effects on the biogeochemistry and ecology of the Arctic.
LIMNOLOGY AND OCEANOGRAPHY
(2023)
Article
Ecology
Thais Barbosa Santos, Angelo Poliseno, Amanda G. Bendia, Vivian H. Pellizari, James D. Reimer, Sergio N. Stampar
Summary: This study focuses on the analysis of the gastral cavity contents of two species of Ceriantharia, revealing the diverse animal classes and similar feeding patterns between them, using morphological and metagenomic analyses.
Article
Limnology
Megan L. Feddern, Jens M. Nielsen, Timothy E. Essington, Gordon W. Holtgrieve
Summary: The key assumption in stable isotope analysis is that consumers are in isotopic equilibrium with their resources. This study investigates how time-varying resource dynamics and isotope incorporation rates of consumers affect consumer trophic position (TP) estimates. They found that TP estimates of higher trophic level consumers are less accurate than lower trophic level consumers when using bulk stable isotope analysis and particulate organic matter as the baseline. However, compound-specific stable isotope analysis of individual amino acids provides more accurate TP estimates for all consumers and ecosystems.
LIMNOLOGY AND OCEANOGRAPHY-METHODS
(2023)
Article
Limnology
Lesley B. Knoll, Benton Fry, Nicole M. Hayes, Hailey M. Sauer
Summary: This study investigated the impact of snow cover and nutrients on the growth of under-ice photoautotrophs in a lake. The results showed that both snow cover and nutrients significantly affected the chlorophyll a concentrations of photoautotrophs, with higher growth observed when snow was removed. Therefore, both light and nutrient conditions in winter may play a crucial role in under-ice photoautotroph dynamics.
LIMNOLOGY AND OCEANOGRAPHY
(2023)
Article
Limnology
Melissa L. Brock, Alyse A. Larkin, Eric J. Raes, Adam C. Martiny
Summary: This study provides a comprehensive understanding of bacterial ecology in the Indian Ocean, revealing 23 distinct bioregions and the relationship between bacterial community structure and oceanic physical and geochemical gradients.
LIMNOLOGY AND OCEANOGRAPHY
(2023)
Article
Limnology
Jean-Francois Lapierre, Katherine E. Webster, Ephraim M. Hanks, Tyler Wagner, Patricia A. Soranno, Ian M. Mccullough, Kaitlin L. Reinl, Marcella Domka, Noah R. Lotting
Summary: A new geographic classification approach was developed for lakes in the conterminous U.S., based on lake archetypes representing extreme points along gradients of multiple geographic features. Seven lake archetypes were identified, and individual lakes were assigned weights for each archetype. This approach improved understanding and prediction of lake responses to environmental drivers, and outperformed global models and ecoregion classifications.
LIMNOLOGY AND OCEANOGRAPHY
(2023)
Article
Limnology
Amanda C. Lohmann, Joseph P. Morton, Oscar M. Schofield, Douglas P. Nowacek
Summary: The breeding population of Adelie penguins around Anvers Island, Antarctica has declined by 98% between 1992 and 2018. This decline is attributed to the cyclical scarcity of krill, which is driven by natural climate variability and exacerbated by anthropogenic climate change. These findings highlight the importance of climate variability in driving ecosystem dynamics under climate change, as it amplifies the impacts of natural climate oscillations across species, disrupting food webs.
LIMNOLOGY AND OCEANOGRAPHY
(2023)
Article
Limnology
Mayara Pereira Neves, Rosilene Luciana Delariva, Daniel M. Perkins, Clarice Bernhardt Fialho, Pavel Kratina
Summary: The ability of animals to change their diet in disturbed ecosystems is crucial for the persistence of diverse communities. This study used various diet tracing techniques to examine trophic plasticity in omnivorous fishes in subtropical streams. The findings showed that land use, specifically the proportion of native forest cover, influenced the isotopic composition of fishes and the nutrient pollution from agriculture propagated through the stream food webs. The dominant omnivorous fish species shifted their diet in disturbed streams, and their trophic niche breadth was affected by both environmental change and competition.
LIMNOLOGY AND OCEANOGRAPHY
(2023)
Article
Limnology
Cecilia E. Heuvel, Yingming Zhao, Jan J. H. Ciborowski, Li Wang, Emilee Mancini, Aaron T. Fisk
Summary: The use of baselines in stable isotope studies is essential for interpreting food web structure. This study tested this assumption in Lake Erie by quantifying spatial variation in stable isotopes and density of benthic organisms. The results showed distinct spatial trends in stable isotopes, which were not related to population densities.
LIMNOLOGY AND OCEANOGRAPHY
(2023)
Article
Limnology
Christopher S. Moore, Robert H. Byrne, Kimberly K. Yates
Summary: This study assesses the effectiveness of sample preservation techniques for measurements of carbonate system parameters in organic-rich estuarine waters and proposes methods to improve measurement accuracy.
LIMNOLOGY AND OCEANOGRAPHY-METHODS
(2023)
Article
Limnology
Guillaume Le Gland, Marta Masdeu-Navarro, Marti Gali, Sergio M. Vallina, Matti Gralka, Flora Vincent, Otto Cordero, Assaf Vardi, Rafel Simo
Summary: In this study, the dynamics of DMSP and DMS in the ocean and their related biological processes were investigated through experiments and modeling. The results show that phytoplankton blooms can increase DMS emission, but only during a transient regime of a few weeks. Additionally, viral infection has an impact on the production and emission of DMS.
LIMNOLOGY AND OCEANOGRAPHY
(2023)
