Article
Water Resources
Alan Puttock, Hugh A. Graham, Josie Ashe, David J. Luscombe, Richard E. Brazier
Summary: Beavers can profoundly alter riparian environments by creating dams and wetlands. Research shows that beavers can reduce peak flows, increase lag times between peak rainfall and peak flow, and lower peak flows, suggesting flow attenuation. Additionally, beavers can reduce peak flows by up to ca. 60% for the largest storms, indicating their potential role in natural flood management.
HYDROLOGICAL PROCESSES
(2021)
Article
Environmental Sciences
Dol Raj Chalise, A. Sankarasubramanian, Julian D. D. Olden, Albert Ruhi
Summary: River scientists conducted a study to understand the effects of dam regulation on river flow regimes. By analyzing data from 175 pairs of regulated and unregulated USGS gages, they found that dams not only affect the magnitude and variability of flow, but also the dominant periodicities of a river's flow regime. The analysis also revealed that the alteration of flow periodicity varies over time, with dam operations, changes in dam capacity, and environmental policies shifting the relative importance of periodicities.
Article
Environmental Sciences
Desneiges Murray, Bethany T. Neilson, Janice Brahney
Summary: Beaver ponds have the potential to attenuate heavy metal pollution, but their impact on dissolved nutrients and total phosphorus depends on the age and character of the pond. Biogeochemical processes in a beaver pond are optimized at intermediate levels of nutrient supply and residence time.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Environmental Sciences
Suyog Chaudhari, Yadu Pokhrel
Summary: This study examines the impacts of existing and planned hydropower dams on hydrological characteristics in the Amazon River basin. The results show that existing dams have substantially altered river flow and flooding patterns, and the collective operation of planned dams could further change river flow patterns.
WATER RESOURCES RESEARCH
(2022)
Article
Environmental Sciences
Amanda L. Ronnquist, Cherie J. Westbrook
Summary: Beavers are recognized as ecosystem engineers, with their dams altering river hydrology. This study in the Canadian Rockies explored physical and hydrologic variations in beaver dam structures, revealing significant differences impacting pond storage dynamics and landscape-related dam attributes. Improved understanding of these variations is crucial for assessing ecosystem resilience and mitigation services.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Civil
Gabriel Mezger, Marta Gonzalez del Tanago, Lucia De Stefano
Summary: This study assesses the hydrological changes downstream from dams in 22 rivers in Spain and finds significant alterations in flow magnitude and timing after dam construction. However, the implemented environmental flows (e-flows) show limited capacity in mitigating the hydrological impacts downstream from dams.
JOURNAL OF HYDROLOGY
(2021)
Article
Physics, Multidisciplinary
P. Steindl, H. Snijders, G. Westra, E. Hissink, K. Iakovlev, S. Polla, J. A. Frey, J. Norman, A. C. Gossard, J. E. Bowers, D. Bouwmeester, W. Loffler
Summary: By manipulating a random continuous single-photon stream using quantum interference, engineered quantum states of light with tunable photon statistics, including photon quantum entanglement, are created. These artificial light states, more complex than coherent states, serve as resources for multiphoton entanglement.
PHYSICAL REVIEW LETTERS
(2021)
Article
Veterinary Sciences
Hirohisa Mekata, Eriko Kusuda, Chiho Mori
Summary: While the risk of BLV transmission through natural suckling was investigated, no colostrum or calves were confirmed to have BLV in dams with low PVLs. However, in dams with middle and high PVLs, a high percentage of colostrum tested positive for BLV, leading to infection rates of 43.4% to 44.8% in calves with natural suckling and artificial rearing. Interestingly, there was no significant difference in infection rates between natural-suckled and artificially reared calves, suggesting that measures such as avoiding natural suckling from dams with BLV may not be a high priority in preventing BLV transmission.
VETERINARY SCIENCES
(2021)
Review
Environmental Sciences
Michelle T. H. Van Vliet, Josefin Thorslund, Maryna Strokal, Nynke Hofstra, Martina Floerke, Heloisa Ehalt Macedo, Albert Nkwasa, Ting Tang, Sujay S. Kaushal, Rohini Kumar, Ann Van Griensven, Lex Bouwman, Luke M. Mosley
Summary: Climate change and extreme weather events pose serious challenges for water management due to their impacts on water resources availability and water quality. This review assesses the impacts of these events and climate change on river water quality and identifies the key responses and driving mechanisms. The findings show that river water quality generally deteriorates under droughts, heatwaves, rainstorms, floods, and long-term climate change, while improvements or mixed responses are also reported. The driving mechanisms include hydrological alterations, rises in water and soil temperatures, and interactions among hydroclimatic, land use, and human drivers.
NATURE REVIEWS EARTH & ENVIRONMENT
(2023)
Article
Geochemistry & Geophysics
Shishun Wang, Liao Chang, Chunhui Tao, Dario Bilardello, Long Liu, Tao Wu
Summary: This study investigates the post-crystallization alterations of titanomagnetites in mid-ocean ridge basalts (MORB) through comprehensive rock magnetic and electron microscopic analyses. The research reveals the variations in magnetomineralogy and magnetic properties with progressive hydrothermal alteration, providing insights into the complexity of seafloor magnetism. The established framework allows for characterizing MORB hydrothermal alteration and contributes to resolving the long-term magnetization variations in oceanic basalts.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2021)
Article
Ecology
J. Marshall Wolf, Edd Hammill
Summary: Beavers can enhance wetland areas by converting lotic habitats into lentic ponds, and beaver dam analogues (BDAs) are used to restore ecosystems in North America and Europe. This study investigated the impact of beaver dams and BDAs on amphibian breeding occupancy. Barred tiger salamanders were found in natural beaver ponds, while BDAs had lower occupancy rates. Beaver complexes had less fish abundance and were older and deeper than BDAs. The study suggests that future beaver restoration efforts should focus on the top of effective drainages.
FRESHWATER BIOLOGY
(2023)
Article
Environmental Sciences
Luiza Moura Peluso, Lucia Mateus, Jerry Penha, Dayani Bailly, Fernanda Cassemiro, Yzel Suarez, Ibraim Fantin-Cruz, Elaine Kashiwaqui, Priscila Lemes
Summary: Climate change and human pressures pose threats to freshwater ecosystems and biodiversity. In the Brazilian portion of the Upper Paraguay River Basin (UPRB), migratory fish support the important ecosystem service of fisheries. Predictions indicate that climate change will lead to range contraction for migratory fish and dams will prevent upstream shifts, impacting fishery and food security in the future.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Energy & Fuels
Xiao Deng, Shirish Patil, Muhammad Shahzad Kamal, Mohamed Mahmoud, Abdullah Sultan, Tinku Saikia
Summary: This study investigated the synergetic impact of chelating agents and viscoelastic surfactants on the wettability alteration of carbonate rock using contact angle measurement. The results showed that all tested chelating agents exhibited strong wettability alteration performance in deionized water solution. The combination of viscoelastic surfactant and chelating agents demonstrated moderate to strong wettability alteration performance. The optimum formulation of the two changed the wettability from strongly oil-wet to water-wet.
Review
Materials Science, Multidisciplinary
Pallavi Singh, D. Atchuta Ramacharyulu, Nikhil Kumar, Kuldeep K. Saxena, Sayed M. Eldin
Summary: Understanding the structure of 6xxx AA alloys is crucial and relies on atomic-level structural analysis. Studies have shown that adding different elements can suppress the negative effects of natural aging and enhance the age hardening of 6xxx AA alloys. This review also summarizes the impact of other elements on the evolution of microstructural features and mechanical properties, which can be used to further improve the mechanical properties of 6xxx AA alloys.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Ecology
Benjamin J. Dittbrenner, Jason W. Schilling, Christian E. Torgersen, Joshua J. Lawler
Summary: Many areas are experiencing increased stream temperatures and reduced water availability due to climate change. Beaver relocation and dam building can help increase water storage, cool stream temperatures, and improve ecosystem resilience. Experimental studies have shown that dams built by relocated beavers can effectively increase water storage and decrease stream temperatures in the first year. However, further research is needed to understand the regional factors that influence the impact of beavers on water storage and temperature.
Article
Geography, Physical
William W. Macfarlane, Joseph M. Wheaton, Nicolaas Bouwes, Martha L. Jensen, Jordan T. Gilbert, Nate Hough-Snee, John A. Shivik
Article
Environmental Sciences
William W. Macfarlane, Jordan T. Gilbert, Martha L. Jensen, Joshua D. Gilbert, Nate Hough-Snee, Peter A. McHugh, Joseph M. Wheaton, Stephen N. Bennett
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2017)
Article
Computer Science, Interdisciplinary Applications
Matthew Nahorniak, Joe Wheaton, Carol Volk, Phillip Bailey, Matt Reimer, Eric Wall, Kelly Whitehead, Chris Jordan
COMPUTERS & GEOSCIENCES
(2018)
Article
Environmental Sciences
William W. Macfarlane, Jordan T. Gilbert, Joshua D. Gilbert, William C. Saunders, Nate Hough-Snee, Chalese Hafen, Joseph M. Wheaton, Stephen N. Bennett
ENVIRONMENTAL MANAGEMENT
(2018)
Article
Multidisciplinary Sciences
Daniel Hamill, Daniel Buscombe, Joseph M. Wheaton
Article
Ecology
Nicholas L. Silverman, Brady W. Allred, John Patrick Donnelly, Teresa B. Chapman, Jeremy D. Maestas, Joseph M. Wheaton, Jeff White, David E. Naugle
RESTORATION ECOLOGY
(2019)
Article
Geography, Physical
Gary R. O'Brien, Joseph M. Wheaton, Kirstie Fryirs, William W. Macfarlane, Gary Brierley, Kelly Whitehead, Jordan Gilbert, Carol Volk
EARTH SURFACE PROCESSES AND LANDFORMS
(2019)
Article
Geography, Physical
Manel Llena, Mark W. Smith, Joseph M. Wheaton, Damia Vericat
EARTH SURFACE PROCESSES AND LANDFORMS
(2020)
Article
Geography, Physical
Manel Llena, Damia Vericat, Mark W. Smith, Joseph M. Wheaton
EARTH SURFACE PROCESSES AND LANDFORMS
(2020)
Article
Geography, Physical
Konrad C. Hafen, Joseph M. Wheaton, Brett B. Roper, Philip Bailey, Nicolaas Bouwes
EARTH SURFACE PROCESSES AND LANDFORMS
(2020)
Article
Environmental Sciences
Robyn L. Bilski, Joseph M. Wheaton, Joseph E. Merz
Summary: This research investigates the impact of in-channel structure on the hydraulics and hyporheic flow of a river, and examines the relationship between these changes and the survival, development, and growth of Chinook salmon embryos. The study finds that in-channel structure disrupts water velocity patterns and creates pressure differences, leading to increased vertical hydraulic gradients within the subsurface. While overall there is no significant increase in the survival, development, and growth of Chinook salmon embryos, certain downstream areas with low gradients and in-channel structure show significantly higher rates of survival, development, and growth.
Article
Environmental Sciences
Peter Skidmore, Joseph Wheaton
Summary: Rivers have been globally diminished, simplified, and degraded due to concentrated agriculture, transportation, and development, limiting their ecological health and value. Recent river management trends present an opportunity to address ecological degradation and climate stress. Focusing on riverscapes as critical natural infrastructure can enhance resilience to climate change and restore river ecosystem health.
Article
Geography, Physical
Alan Kasprak, James Brasington, Konrad Hafen, Richard D. Williams, Joseph M. Wheaton
EARTH SURFACE DYNAMICS
(2019)
Article
Geosciences, Multidisciplinary
Daniel J. Karran, Cherie J. Westbrook, Joseph M. Wheaton, Carol A. Johnston, Angela Bedard-Haughn
HYDROLOGY AND EARTH SYSTEM SCIENCES
(2017)
Article
Geography, Physical
Joseph M. Wheaton, Nicolaas Bouwes, Peter Mchugh, Carl Saunders, Sara Bangen, Phillip Bailey, Matt Nahorniak, Eric Wall, Chris Jordan
EARTH SURFACE PROCESSES AND LANDFORMS
(2018)