Article
Geosciences, Multidisciplinary
John T. Kemper, Julianne Scamardo
Summary: Snow avalanches have a significant impact on wood dynamics within mountain streams. The volume of wood in stream reaches intersected by avalanche pathways is significantly greater than in non-avalanched reaches. Avalanches create hotspots of in-stream geomorphic complexity and supply a significant amount of wood to mountain streams.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Geosciences, Multidisciplinary
Tomas Galia, Radek Tichavsky, Andrea Fabianova, Vilem Spalovsky
Summary: Research focused on the recruitment and distribution patterns of large wood (LW) in headwater streams of forested mountain regions, where disturbances play a crucial role in determining the final distribution of LW. Analysis revealed that streams impacted by blowdowns had the highest LW volume and a uniform longitudinal distribution, while streams affected by high-magnitude cascade recruitment-transport processes had the lowest LW volume and irregular distribution. Dendroecological dating further showed that a significant percentage of LW died during specific periods due to disturbances, with different growth patterns observed in response to varying levels of disturbance intensity.
Article
Limnology
Binbin Wang, Clifford E. Kraft
Summary: The study found that thiamine is a limiting nutrient for primary producers in stream ecosystems and has a significant impact on the growth of stream periphyton, with effects similar to nitrogen. This extends the previous understanding of thiamine's influence on marine photosynthetic eukaryotes to freshwater ecosystems.
LIMNOLOGY AND OCEANOGRAPHY
(2021)
Article
Environmental Sciences
Ellen Wohl, Emily P. Iskin
Summary: We used 11 years of annual surveys to examine the persistence and geomorphic effects of logjams in streams of the Southern Rockies of Colorado, USA. We found that site persistence and logjam persistence differ significantly between different types of river reaches, while backwater storage is significantly greater in multithread reaches. Riparian forest age and average logjams per channel length were found to explain variation in jam and site persistence and backwater storage.
WATER RESOURCES RESEARCH
(2022)
Article
Engineering, Environmental
Devon Kerins, Li Li
Summary: Warming in mountains leads to higher concentrations of dissolved carbon in streams, especially in arid mountain areas. This indicates deteriorating water quality and changes in soil carbon dynamics, which have significant implications for global water resources and environmental sustainability.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Environmental Sciences
Sebastian Cedillo, Esteban Sanchez-Cordero, Luis Timbe, Esteban Samaniego, Andres Alvarado
Summary: The study compared different equations for predicting river flow velocity and found that nondimensional hydraulic geometry equations provided the most accurate predictions. A methodology for defining parameters using easily measured field data was proposed, leading to improved predictability. The authors encourage further application of the methodology to enhance understanding of parameters related to reach characteristics.
Article
Engineering, Environmental
Fotios K. Konstantinidis, Savvas Sifnaios, George Arvanitakis, Georgios Tsimiklis, Spyridon G. Mouroutsos, Angelos Amditis, Antonios Gasteratos
Summary: Addressing the waste crisis requires innovative waste management strategies, and this study proposes a vision-based architecture using deep learning multi-modal approach for effective sorting of parts based on shape and material properties. By extracting spatial and spectral information from RGB and multi-spectral sensors and projecting them in a common latent space, objects can be accurately classified. In addition, a Multispectral Mixed Waste Dataset (MMWD) is created, containing multi-spectral data and RGB data, to support the proposed deep architecture.
RESOURCES CONSERVATION AND RECYCLING
(2023)
Article
Marine & Freshwater Biology
Lorena Gonzalez-Paz, Maria Comesana, Isabel Pardo, Jose Barquin, Alejandra Goldenberg-Vilar, Cristina Delgado
Summary: In the rivers of the Picos de Europa mountain range, the composition of diatom assemblages did not show significant changes over the past two decades, with decreases in water chemistry indicators. While diversity and evenness decreased over time, the overall ecological status in these minimally disturbed streams remained high, indicating the persistence of biodiversity.
Article
Engineering, Environmental
Kenneth Hickenbottom, Krishna Pagilla, David Hanigan
Summary: The study investigated the short-term and long-term impacts of the Caldor and Mosquito Fires on water quality and dissolved organic matter. The results showed significant degradation of water quality in the burned watersheds, including increases in dissolved organic carbon and nitrogen, as well as higher concentrations of disinfection byproduct precursors.
Article
Multidisciplinary Sciences
Sarah O. Saraiva, Ian D. Rutherfurd, Philip R. Kaufmann, Cecilia G. Leal, Diego R. Macedo, Paulo S. Pompeu
Summary: Instream wood plays important roles in aquatic systems, but human activities have led to reductions in instream wood amount. This study compares instream wood loads and size distributions in wet-tropical Amazon and semi-humid-tropical Cerrado streams with temperate streams in the USA. The results show that the wood stocks in neotropical streams are similar to those in comparable temperate forest and savanna streams, but are made up of a larger number of small pieces. The findings highlight the importance of field survey methods and wood metric in comparing different datasets.
Article
Biology
Victor Kang, Robin T. White, Simon Chen, Walter Federle
Summary: Research has found that net-winged midge larvae have powerful suction organs that can withstand tremendous forces on different surfaces, thanks to the microtrichia structures on the surface of the suction organs. These findings provide new insights for designing and manufacturing suction cups capable of adhering to a wider variety of surfaces.
Article
Biochemistry & Molecular Biology
Lauren M. Benedict, Virginia K. Heinen, Joseph F. Welklin, Benjamin R. Sonnenberg, Lauren E. Whitenack, Eli S. Bridge, Vladimir V. Pravosudov
Summary: This study found that wild, food-caching mountain chickadees are capable of learning and using abstract rules to guide their foraging decisions in natural environments. Their ability to remember and reason allowed them to adapt their search strategies based on the rule of daily feeder rotation.
Article
Biodiversity Conservation
Pedro Goncalves Vaz, Eric C. Merten, Christopher T. Robinson, Paulo Pinto
Summary: The study looked at how forest fires impact instream wood functions in rivers. It found that factors like burning level, season, and other driving factors can affect the likelihood of different ecological consequences. Additionally, the size and condition of wood in streams play a crucial role in providing habitat for aquatic biota, such as vegetation, periphyton, and biofilm.
JOURNAL OF APPLIED ECOLOGY
(2021)
Article
Computer Science, Information Systems
Walter Cai, Philip A. Bernstein, Wentao Wu, Badrish Chandramouli
Summary: This paper discusses alerting systems in stream processing applications and how utilizing quasiconvex functions can lead to substantial memory savings and ensure alarms are never missed.
PROCEEDINGS OF THE VLDB ENDOWMENT
(2021)
Article
Environmental Sciences
Kate L. Mathers, Carmen Kowarik, Cristina Rachelly, Christopher T. Robinson, Christine Weber
Summary: The study found that sediment traps can significantly disrupt the sediment regime in mountain streams, with important consequences for instream ecology and environmental conditions. Sediment traps may lead to non-uniform grain size distribution, reduced substrate diversity, and altered macroinvertebrate community composition.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)