Article
Microbiology
Sukriye Celikkol, Nathalie Fortin, Nicolas Tromas, Herinandrianina Andriananjamanantsoa, Charles W. Greer
Summary: This study investigated the sources of nitrogen and phosphorus nutrients, as well as the impact of runoff on cyanobacterial blooms. The results showed that peaks in nitrogen and phosphorus concentrations were associated with intense cumulative precipitation events, and that nitrogen and phosphorus had a significant influence on cyanobacterial population dynamics.
Article
Engineering, Environmental
A. L. Marriott, O. F. Osano, T. J. Coffey, O. S. Humphrey, C. O. Ongore, M. J. Watts, C. M. Aura
Summary: The impact of population expansion through economic growth and development has been identified as one of the key drivers of both water and sediment contamination from potentially harmful elements (PHEs). This study measured the concentrations of PHEs in water, sediment, and fish in four zones within Winam Gulf and Lake Victoria area of Kenya. The results show that the concentrations of PHEs in water and sediment exceeded the guideline levels, while the contributions of PHEs to the recommended daily intakes were below threshold guidelines for both aquaculture and wild fish.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2023)
Article
Environmental Sciences
Qing Lu, Huanhuan Fan, Bing Yan, Dongsheng Zhao, Xiaojian Wei
Summary: This study investigated the variations of soil chemical characteristics (such as soil organic carbon, total nitrogen, and total phosphorus) with soil depth in northern Tibet, and their regulation on different grassland ecosystems. The results showed that alpine meadow soil had higher SOC, TN, and TP contents compared to alpine steppe soil. These nutrients and ratios decreased with increasing soil depth, and the differences between the uppermost and deepest soil layers were significant. Environmental factors had a larger impact on soil chemical characteristics in alpine meadow soil.
JOURNAL OF SOILS AND SEDIMENTS
(2023)
Article
Water Resources
Yanping Wang, Gang Liu, Senlin Zhu, Weiping Hu, Hui Zhang, Xiangqian Zhou, Zhaoliang Peng
Summary: This study uses a 3-D hydrodynamic-ecological model to assess the impacts of water transfer on flow and water quality in Lake Chaohu. Results show that clean water transfer can increase flow rate and decrease nutrient concentrations near the transfer inlets. The best improvement in flow rate and water quality is achieved through clean water transfer via the eastern route. Winter water transfer is more effective for improving total nitrogen and total phosphorus, while summer transfer is better for ammonia nitrogen. Decreasing wind speed is essential for mitigating nutrient accumulation in the heavily polluted bay of the western lake.
JOURNAL OF HYDROLOGY-REGIONAL STUDIES
(2023)
Review
Plant Sciences
Zhi Geng, Jun Chen, Bo Lu, Fuyuan Zhang, Ziping Chen, Yujun Liu, Chao Xia, Jing Huang, Cankui Zhang, Manrong Zha, Congshan Xu
Summary: Plant signal transduction in response to nutrient element deficiency specifically occurs in the vascular tissue, which plays an essential role in the growth and development of plants by transporting necessary nutrients and signaling molecules between different tissues. Recent research has highlighted the importance of shoot tissues in receiving nutrient starvation signals from the roots. This review evaluates the significance of vascular tissue in both local and systemic signal transduction and as a regulatory center for plant nutrient deficiency.
Article
Horticulture
Shiwei Zheng, Ting Bian, Shuang Wang, Xiaolan Zhang, Xiao Li, Yongyong Zhang, Hongdan Fu, Zhouping Sun
Summary: The study found that under continuous cropping conditions, imbalanced soil nutrients result in decoupling of phosphorus utilization from nitrogen and potassium utilization in the leaves.
Article
Environmental Sciences
Chuleemas Boonthai Iwai, Theingi Khaung, Jarupong Prasopsuk, Balasubramani Ravindran
Summary: Inle Lake in Myanmar is an important freshwater biodiversity hotspot, but poor management of floating gardens has resulted in contamination of water and sediment with excessive nutrients and chemical residues. This study aims to assess the environmental risk to the lake ecosystem by investigating nutrient contamination in water and sediment, as well as pesticide residues in fish. The results show that non-GAP farming methods have higher levels of pesticide and nutrient contamination compared to GAP methods, posing potential threats to the lake ecosystem.
Article
Biotechnology & Applied Microbiology
Siraj Yousuf Parray, Bhupendra Koul, Maulin P. Shah
Summary: The study aimed to analyze and compare the physico-chemical properties of water in Dal lake and Chatlam wetlands, and the impact of anthropogenic stresses on the growth and dominance of aquatic macrophytes. Results showed that Chatlam wetland has more macrophytic diversity than Dal lake, with slight differences in water quality and pollution parameters.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Environmental Sciences
Florence Nantaba, John Wasswa, Henrik Kylin, Hindrik Bouwman, Wolf -Ulrich Palm, Klaus Kummerer
Summary: Pharmaceutical residues in the aquatic environment have negative impacts on ecosystems, particularly in terms of antibiotic resistance development and endocrine disruption. This study investigated the occurrence of 25 pharmaceutical residues in sediment samples from Lake Victoria in Uganda, and assessed their ecotoxic risks. The results showed the presence of various pharmaceutical residues in the sediment, with levofloxacin, ciprofloxacin, and sulfamethoxazole being the predominant compounds.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Chemistry, Multidisciplinary
Jolanta Grochowska, Renata Tandyrak
Summary: The study conducted in the Kartuzy lake complex showed that the lakes have been receiving untreated domestic sewage since the 1950s, leading to significant pollution issues. After the modernization of the sewage system in 2018, there was a reduction in external nutrient loading, but further restoration efforts are needed to improve the environmental conditions in the lakes.
APPLIED SCIENCES-BASEL
(2021)
Article
Meteorology & Atmospheric Sciences
Kirsty E. Hanley, Jennifer S. R. Pirret, Caroline L. Bain, Andrew J. Hartley, Humphrey W. Lean, Stuart Webster, Beth J. Woodhams
Summary: This article evaluates the prediction of convective storms in two convection-permitting versions of the Met Office Unified Model over the Lake Victoria basin region in East Africa. The tropical configuration compares better with satellite-derived rainfall observations, but both configurations generally produce too much rain, too many small storms, and a lack of light rain.
QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY
(2021)
Article
Environmental Sciences
M. Lessmann, A. Kanellopoulos, J. Kros, F. Orsi, M. Bakker
Summary: Recovering nutrients from organic materials and reducing artificial fertilizer inputs can be costly and involve logistics. Direct application of organic materials to agricultural land can contribute to pollution. Assessing the cost of increased recycling requires a spatially explicit approach. A multi-objective model was developed to estimate the trade-offs between costs of nutrient recovery and improvements in nutrient distribution. Results showed limited potential for replacing nitrogen and phosphorus fertilizers through nutrient recovery. Increasing manure processing for nutrient recovery led to a redistribution of nutrients and trace metals. Our model provides a methodology for assessing the trade-offs between increased recycling and spatial effects for sustainable agriculture.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Soil Science
S. Maranon-Jimenez, D. Asensio, J. Sardans, P. Zuccarini, R. Ogaya, S. Mattana, J. Penuelas
Summary: Intensification of droughts in Mediterranean regions can negatively affect soil nutrient availability and biogeochemical functioning through its impact on soil microbial biomass and activity. Long-term chronic drought reduces microbial biomass and nutrient content, increasing the risk of nitrogen loss, while seasonal drought affects microbial biomass content of C, N, and P.
SOIL BIOLOGY & BIOCHEMISTRY
(2022)
Article
Environmental Sciences
Jason B. Fellman, Eran Hood, David D'Amore, Richard T. Edwards
Summary: The study found that the export of nitrogen and phosphorus from the perhumid coastal temperate rainforest of northwestern North America is influenced by seasonal and stormflow events, showing a pulsed nature in the magnitude and species of nutrients exported.
Article
Meteorology & Atmospheric Sciences
Rita D. Roberts, Steven J. Goodman, James W. Wilson, Paul Watkiss, Robert Powell, Ralph A. Petersen, Caroline Bain, John Faragher, Ladislaus B. Chang'a, Julius Kiprop Kapkwomu, Paul N. Oloo, Joseph N. Sebaziga, Andrew Hartley, Timothy Donovan, Marion Mittermaier, Lee Cronce, Katrina S. Virts
Summary: The HIGHWAY project has successfully developed an Early Warning System for Lake Victoria, providing meaningful marine forecasts and hazardous-weather warnings to fishermen and other stakeholders. These forecasts and warnings have been communicated to thousands of people through various channels, helping to reduce drowning fatalities and weather-related losses, and generating significant socioeconomic benefits.
BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY
(2022)