Article
Energy & Fuels
Hang Zhou, Josh McConnell, Terry A. Ring, James C. Sutherland
Summary: A method is proposed to determine the gas-phase fuel streams in coal combustion, which is then applied to identify the required dilution rate needed to achieve MILD coal combustion. By analyzing reaction rates and temperature profiles, temperature criteria for MILD coal combustion can be obtained.
Article
Environmental Sciences
Nan Zhang, Guangxia Shang, Yang Dai, Yuan Zhang, Sen Ding, Xin Gao
Summary: Different biological groups show biased responses to environmental stressors on different scales. Selecting bioindicators based on pressure characteristics is crucial for accurately assessing ecological quality. Macroinvertebrates and fish show distinct responses to environmental stressors, with their indices recommended for biomonitoring programs, especially in plain rivers.
Article
Environmental Sciences
Kun Guo, Naicheng Wu, Wei Li, Annette Baattrup-Pedersen, Tenna Riis
Summary: Stream biofilms are complex aggregates of diverse organism groups that are essential for global carbon and nitrogen cycles. The study found that specific phyla dominated the prokaryotic and eukaryotic communities at most sites, with diversity peaking in July and January. Hydrological and physicochemical variables were significant factors in explaining community composition, but a large portion of variation remained unexplained, likely due to unmeasured factors such as light intensity and biological interactions. A multitrophic level perspective is suggested for future biofilm studies to capture the complexity of trophic and non-trophic interactions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Paul G. Matson, Louise M. Stevenson, Rebecca A. Efroymson, R. Trent Jett, Michael W. Jones, Mark J. Peterson, Teresa J. Mathews
Summary: This study investigates the potential natural attenuation of PCB contamination in a large reservoir system through analyzing long-term data from Oak Ridge Reservation in East Tennessee, USA.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Ecology
Neal D. Mundahl, Erik D. Mundahl
Summary: The study revealed that agriculture-dominated karst areas had significant negative impacts on stream habitats and biota, with over half of the sites showing degradation. Wide riparian buffers and avoidance of groundwater influence have allowed for some recovery in certain stream reaches, but more buffers and soil conservation practices are needed to protect additional stream segments and biota. New stream buffer laws have resulted in establishment of vegetated buffers at all study sites, potentially leading to improved habitat and biotic communities in the future.
ECOLOGICAL PROCESSES
(2022)
Article
Environmental Sciences
Jason A. Leach, Bethany T. Neilson, Caleb A. Buahin, R. Dan Moore, Hjalmar Laudon
Summary: Empirical studies have shown that lakes have a significant impact on stream temperature at landscape scales, even with a small fraction of the catchment area represented by lakes. Lake outlet temperatures in summer and autumn were higher compared to hillslope lateral inflow temperatures. The influence of lakes on downstream temperature was greatest during periods of high lake outflow and persisted for at least 1.4 km downstream.
WATER RESOURCES RESEARCH
(2021)
Article
Environmental Sciences
Thiago Deruza Garcia, Larissa Strictar, Carolina Mendes Muniz, Erivelto Goulart
Summary: Despite the lack of significant differences in ecomorphological and dietary characteristics between urban and rural streams, human activities have negatively impacted both types of streams, resulting in similar structure of fish assemblages. Enhancing environmental management efforts to protect and improve stream ecosystems is necessary to address these issues.
Article
Ecology
Fei Liu, Pengcheng Lin, Huanzhang Liu, Jun Wang
Summary: The study investigated the spatial and seasonal changes in fish assemblages and their association with environmental factors in mountain streams. It found significant variations in fish community structure at different sites, influenced by both landscape factors and habitat features. Landscape factors had a greater impact on fish assemblages compared to local habitat variables, which were only significant in certain seasons.
ECOLOGY AND EVOLUTION
(2021)
Article
Biodiversity Conservation
Jialing Qiao, Yang Liu, Haixia Fu, Ling Chu, Yunzhi Yan
Summary: This study assessed the effects of urbanization on fish assemblage diversity in the headwater streams of the Xin'an River in China. The results showed that urban segments had higher species richness and lower functional richness compared to natural segments. Fish assemblages also exhibited taxonomic differentiation but functional homogenization in urbanized areas. The study suggests that a combination of taxonomic and functional diversity indices provides a better understanding of how fish biodiversity responds to urbanization.
ECOLOGICAL INDICATORS
(2022)
Review
Marine & Freshwater Biology
Wolfgang J. Junk, Maria Teresa Fernandez Piedade, Jochen Schongart, Catia Nunes da Cunha, Stela Rosa Amaral Goncalves, Karl Matthias Wantzen, Florian Wittmann
Summary: Low-order streams and riparian wetlands play important roles in the drainage network of landscapes. However, there has been limited research on these ecosystems in Brazil. In Brazil, riparian wetlands cover at least 25% of the forested part of the Amazon basin and about 10% of the Cerrado region. Large-scale agriculture and cattle ranching pose significant threats to these wetlands.
Article
Environmental Sciences
Lacey J. Davis, Richard Milligan, Christine E. Stauber, Na'Taki Osborne Jelks, Lisa Casanova, Sarah H. Ledford
Summary: Escherichia coli, as fecal indicator bacteria, enter waterbodies through aging and failing infrastructure. Exposure to untreated sewage can cause gastrointestinal disease. The burden of this contamination is unequally distributed, with Black, Indigenous, and communities of color suffering disproportionately. New approaches, such as community-led initiatives and mycofiltration, are needed to address this issue.
WILEY INTERDISCIPLINARY REVIEWS-WATER
(2022)
Article
Marine & Freshwater Biology
Qiang Li, Yuhan Zhang, Ling Chu, Yunzhi Yan
Summary: Based on fish data from 25 first-order streams within an important tributary of the Yangtze River, the study found that low-head dams facilitate the invasion of native-invasive fish to headwater streams in regions where native fish species are completely dominant.
Article
Ecology
Daniel T. L. Myers, Richard R. Rediske, James N. McNair, Aaron D. Parker, E. Wendy Ogilvie
Summary: The study found that various factors influenced the structure of aquatic communities along the agricultural-to-urban land use gradient. Instream woody debris had the strongest relationship with EPT abundance and richness, while fine streambed substrate was dominant in agricultural headwaters. Environmental variables and aquatic communities may not conform with what is generally known about land use impacts to streams, indicating the need for well-planned management to protect aquatic biodiversity in urbanized landscapes.
ECOLOGICAL PROCESSES
(2021)
Article
Environmental Sciences
Qian Zhao, Yuan Zhang, Fen Guo, Catherine Leigh, Xiaobo Jia
Summary: Studies on the impact of salinisation on mountain streams ecosystems showed that as salinisation increased, biodiversity decreased and trophic links were simplified.
Article
Environmental Sciences
George Bunting, Judy England, Kieran Gething, Tim Sykes, Jon Webb, Rachel Stubbington
Summary: A study on the invertebrate communities of the Candover Brook chalk stream revealed that while temporary stream channels have lower aquatic taxa richness compared to perennial reaches, the total biodiversity benefits from contributions from both aquatic and terrestrial species. It is recommended that research and monitoring should consider both aquatic and terrestrial communities in order to characterize the biodiversity and ecological quality of temporary streams.
WATER AND ENVIRONMENT JOURNAL
(2021)