Article
Environmental Sciences
Mfundo S. S. Mpinga, Yanasivan Kisten, Eugin Bornman, Renzo Perissinotto, Nadine A. A. Strydom
Summary: The Seekoei Estuary, located on the coast of South Africa, has been extensively modified by human activities such as impoundments, water abstraction, causeway construction, and artificial breaches. This has had a significant impact on the fish community, which was studied over a period of 2 years. The study found that the estuary was dominated by specific estuarine and marine species, but frequent hypersaline conditions and habitat alterations created an ecological trap.
ESTUARIES AND COASTS
(2023)
Article
Environmental Sciences
Jiyoung Lee, Soonmo An
Summary: This study investigated the regenerated nitrogen cycling and biogeochemical consequences of coastal development in the turbid and nutrient-rich Yeongsan River Estuary (YRE) located in the southeast region of the Yellow Sea. The results showed that small-sized bacteria, rather than zooplankton, played a major role in ammonium regeneration. Ammonium regeneration and potential uptake rates were relatively high, especially during summer. The study concluded that ammonium is actively recycled and provides sufficient nitrogen to sustain high primary productivity in the YRE.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Multidisciplinary Sciences
Melissa M. Rohde, John C. Stella, Dar A. Roberts, Michael Bliss Singer
Summary: The analysis reveals that riparian woodlands exhibit a stress response to deeper groundwater, with a decline in greenness. In water-limited regions, there is greater seasonal coupling of canopy greenness to natural streamflow compared to anthropogenically altered streams.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Environmental Sciences
Indrani Mukherjee, Umesh Kumar Singh
Summary: This study evaluated the groundwater quality status in five major river basins in a semi-arid Indian tract, finding that mineral weathering, mixing, and anthropogenic inputs are main contributors to deteriorated quality. Kriging was found to be the most accurate interpolation technique, and Shannon's entropy theory was used to eliminate subjective bias and uncertainty in assessing groundwater quality.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Review
Biochemical Research Methods
Laura G. Leff, Kolapo Fasina, Jean Engohang-Ndong
Summary: Streams and rivers are impacted by human activities, leading to pollution and antibiotic resistance gene occurrence. Current methods of detecting antibiotic resistance genes have limitations, but the use of metagenomics can overcome these barriers. The public health and ecological impacts of antibiotic resistance are understudied.
CURRENT OPINION IN BIOTECHNOLOGY
(2023)
Article
Environmental Sciences
Anna R. Armitage
Summary: The study found that utilizing different restoration approaches within anthropogenically altered landscapes can achieve desirable ecosystem-level restoration outcomes. Marshes filled with beneficial uses had similar plant biomass and cover to reference conditions, and were up to 70% higher than in excavated formations, regardless of planting technique or location in the landscape.
ESTUARIES AND COASTS
(2021)
Article
Environmental Sciences
G. V. M. Gupta, R. Jyothibabu, Ch Ramu, A. Yudhistir Reddy, K. K. Balachandran, V Sudheesh, Sanjeev Kumar, N. V. H. K. Chari, Kausar F. Bepari, Prachi H. Marathe, B. Bikram Reddy, Anil Kumar Vijayan
Summary: This study reveals for the first time that the world's largest hypoxic-anoxic zone along the west coast of India is formed through a natural process, with the extent and persistence of coastal oxygen deficiency depending on the degree of deoxygenation of source waters for the upwelling, confined to the central shelf region.
ENVIRONMENTAL RESEARCH LETTERS
(2021)
Article
Environmental Sciences
Seema Nihalani, Ashish Meeruty
Summary: The study examined the water quality index of four rivers in Gujarat, indicating that most of the surface water samples ranged from good to poor. The quality of water was better upstream compared to downstream, with the decline attributed to sewage discharge, industrial effluent, and urban runoff.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Revati Hardikar, C. K. Haridevi, Shantaj Deshbhratar
Summary: This study investigated the variability in phytoplankton functional structure using a trait-based approach and explored the relationship between species traits and environmental factors, as well as their impact on ecosystem functioning. The results revealed that morphological traits, temperature, and ammonia played a decisive role in the seasonal succession of phytoplankton species. It was found that certain traits favored higher biomass production but might hinder energy transfer efficiency. The strong correlation between environmental variables and phytoplankton functional structure supports the practical implementation of a trait-based approach in studying phytoplankton community dynamics under different environmental conditions.
MARINE POLLUTION BULLETIN
(2024)
Article
Environmental Sciences
Wei Zhi, Christoph Klingler, Jiangtao Liu, Li Li
Summary: This study reconstructed daily water temperature and dissolved oxygen in rivers across the United States and Central Europe using a deep learning model. The results showed that a majority of the rivers experienced persistent warming and deoxygenation, with urban rivers exhibiting the most rapid warming and agricultural rivers experiencing the slowest warming but fastest deoxygenation.
NATURE CLIMATE CHANGE
(2023)
Article
Environmental Sciences
Pinakshi Biswas, Bhanu Prakash Vellanki, Absar Ahmad Kazmi
Summary: This study analyzed surface water, sediment, and groundwater samples from the Yamuna River basin in India, and found a high presence of agricultural chemicals and pharmaceuticals. The potential health risks of these contaminants were also evaluated.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Geography, Physical
Chenjuan Jiang, Qingshu Yang, Huayang Cai
Summary: This study investigates the impact of anthropogenic changes on the Modaomen Estuary, China. It finds that human activities have significantly altered the estuarine environments and wave forces. Decreased sediment input from rivers and increased wave power due to estuarine regulation projects have shifted the estuary from a river-dominated environment to one controlled by both waves and rivers, with waves being dominant in the dry season. Morphological changes include the rotation of shoals, straightening of the shoreline, and the development of an asymmetrical subaqueous delta.
EARTH SURFACE PROCESSES AND LANDFORMS
(2022)
Article
Environmental Sciences
Donglin Li, Fengqin Chang, Yang Zhang, Lizeng Duan, Qi Liu, Haoyu Li, Guangzhi Hu, Xiaonan Zhang, Youhong Gao, Hucai Zhang
Summary: The lability and controlling factors of arsenic (As) at the sediment-water interface (SWI) were investigated using various sampling techniques and chemical analyses. The results showed that the migration of As in the lake was influenced by seasonal changes and the presence of organic matter (OM) and iron oxides. These findings provide valuable insights into the behavior and fate of arsenic in similar environments.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Chemistry, Multidisciplinary
Vivian Afriyie, Lyndon N. A. Sackey, Linda Aurelia Ofori
Summary: This study assessed the concentration of heavy metals and the physicochemical and biological properties of the Dankra River. The results showed that the river is not heavily polluted with the selected heavy metals and meets the healthy standards. Although the river is safe to use, regular monitoring is necessary to support life.
JOURNAL OF CHEMISTRY
(2022)
Article
Green & Sustainable Science & Technology
Ashok Kumar Kanaujiya, Vineet Tiwari
Summary: The rivers Ganga and Yamuna have suffered significant degradation and pollution due to the large amount of wastewater entering the rivers during the Kumbh Mela religious event. The water quality during and after the event did not meet public use standards. This study used the water quality index (WQI) to assess the level of pollution in the rivers before, during, and after the Kumbh Mela, and identified the key pollutants affecting the water quality.
ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY
(2023)