Article
Environmental Sciences
Huy Dang, Yadu Pokhrel, Sanghoon Shin, Jac Stelly, Daniel Ahlquist, Duong Du Bui
Summary: Inland lakes, such as Tonle Sap Lake in Cambodia, are being significantly impacted by climate change and dam construction. This study shows that the operation of dams in the Mekong River basin has contributed to alterations in the lake's water balance and inundation dynamics, with important implications for water management.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Water Resources
Matteo Giuliani, Marta Zaniolo, Scott Sinclair, Marco Micotti, Jos Van Orshoven, Paolo Burlando, Andrea Castelletti
Summary: This study investigates the impacts of infrastructure development in the Omo-Turkana basin on local stakeholders and proposes a participatory decision-analytic framework for strategic planning. Results demonstrate potential negative effects on local fish yields, but also suggest possibilities for efficient and socially inclusive compromises.
JOURNAL OF HYDROLOGY-REGIONAL STUDIES
(2022)
Editorial Material
Environmental Sciences
Marko Kallio, Matti Kummu
Summary: The discussion focuses on the impact of recent hydropower development in the Mekong River on flood dynamics and the Tonle Sap Lake system. While changes in precipitation are considered a significant factor, the evaluation method of annual mean discharge and inundation area is criticized for not capturing the actual operation and impacts of the dams.
ENVIRONMENTAL RESEARCH LETTERS
(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)
Review
Environmental Sciences
Akarath Soukhaphon, Ian G. Baird, Zeb S. Hogan
Summary: Hydropower dams in the Mekong River basin are negatively impacting surrounding areas, affecting fish migrations, river hydrology, and sediment transfers. This is leading to long-term economic and food security issues for communities living near the river.
Article
Engineering, Environmental
Peng Zhang, Qingyuan Liu, Yuanming Wang, David Z. Zhu, Ruifeng Liang, Leilei Qin, Ran Li, Qianfeng Ji, Kefeng Li
Summary: The success of river habitat restoration relies on accurate assessment proxies. However, determining how to quantitatively assess the impact of multiple stressors during flood discharge from high dams in riverine ecosystems and where and how to implement more reliable recovery interventions remain challenges. Here, we developed a bottom-up mechanistic framework for assessing the effects of total dissolved gas supersaturation (TDGS) and hydrodynamics on fish habitat quality and applied it to the downstream river reach of the Xiangjiaba Dam in Southwest China. Our findings offer a transferable framework for the quantitative evaluation of fish habitat and implementation of restoration management during dam flood discharge periods, thus providing a new perspective for biodiversity conservation and habitat restoration in dam-regulated rivers with TDGS around the world.
Article
Engineering, Environmental
Peng Zhang, Qingyuan Liu, Yuanming Wang, David Z. Zhu, Ruifeng Liang, Leilei Qin, Ran Li, Qianfeng Ji, Kefeng Li
Summary: This study highlights the importance of accurately evaluating the impact of high dam flood discharge on fish habitat during flood periods, as well as identifying reliable recovery interventions. It also suggests that priority restoration areas can be identified by lowering the habitat suitability index and providing a series of interventions to improve habitat suitability for fish species.
Article
Multidisciplinary Sciences
Benjamin Lloyd Miller, Gordon William Holtgrieve, Mauricio Eduardo Arias, Sophorn Uy, Phen Chheng
Summary: Carbon dioxide supersaturation in lakes and rivers worldwide is commonly attributed to terrestrial-aquatic transfers of organic and inorganic carbon, and dissolved CO2 in flood pulse lakes and rivers may have a methanogenic origin.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Geography, Physical
Simone Zen, Paolo Perona, Encarni Medina-Lopez
Summary: In this study, we examined the impact of local climate changes and river hydrology on the morphodynamics of a river delta, focusing on the evolution of the delta at the lake inlet. The case study was conducted on the Omo River delta in Ethiopia, which flows into Lake Turkana, Kenya. The construction of dams within the Omo basin, particularly the Gibe III dam, has greatly affected the river hydrology and sediment supply. Through the analysis of historical satellite data, we found that the sediment erosion and the dynamics of the delta structure have been significantly altered.
Article
Water Resources
Gabriel Stecher, Mathew Herrnegger
Summary: This study systematically assesses the impact of hydropower reservoirs on floods in eight heavily modified river basins in Austria. The results show significant reductions in peak discharge not only at gauges directly affected by the reservoir, but also farther downstream at receiving rivers. The reduction of flood peak is related to catchment area and reservoir characteristics. Extreme events with return periods greater than 30 years exhibit a noteworthy average flood peak reduction of over 33%.
HYDROLOGICAL SCIENCES JOURNAL
(2022)
Article
Environmental Sciences
Quan Quan, Shaoze Gao, Yanwu Shang, Boxing Wang
Summary: This study investigated the impact of climate change and hydropower generation on the survival of indigenous fish in the source region of the Yellow River and proposed appropriate solutions. The results indicated that global warming is expected to reduce the negative effects caused by hydropower generation and increase the inhabitable area for fish.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Luiza Silva do Nascimento, Layra de Oliveira Silva, Sophia Menezes de Azevedo, Ronaldo de Almeida, Marcelo Gomes Almeida, Lucas Silva Azevedo, Wanderley Rodrigues Bastos, Cristina Maria Magalhaes de Souza, Inacio Abreu Pestana
Summary: The contamination of Cr is becoming a concerning issue in the Amazon as the rise of cattle farming has led to more tanneries in the region, resulting in effluents rich in Cr. This study evaluated the seasonal and spatial dynamics of Cr in fish from Puruzinho Lake and determined the daily intake of Cr by the local population. The results showed that the feeding habits and seasonality directly influenced the Cr dynamics in fish, with herbivorous fish having higher Cr concentrations. The consumption of these fish exceeded the recommended Cr intake limits, but no harmful effects on health are expected. Spatial analysis indicated an increasing trend in Cr concentrations.
Article
Environmental Sciences
Pengcheng Qin, Hongmei Xu, Min Liu, Luliu Liu, Chan Xiao, Iman Mallakpour, Matin Rahnamay Naeini, Kuolin Hsu, Soroosh Sorooshian
Summary: This study assesses the impacts of climate change on major dams in the Upper Yangtze River Basin. The findings reveal that dam inflow will increase, hydropower generation will increase with greater interannual variability, and flood events will become more frequent and severe in the future. Additionally, the regulation function of dams will strengthen in the flood season and weaken in the dry season.
Article
Engineering, Civil
A. S. Fleischmann, J. P. F. Breda, O. A. Passaia, S. C. Wongchuig, F. M. Fan, R. C. D. Paiva, G. F. Marques, W. Collischonn
Summary: This paper presents a novel approach that fully couples river-floodplain-reservoir hydrodynamic and hydrological models, significantly improving the representation of reservoir dynamics and operation at large scale. The study found that the operation schemes were more relevant than the reservoir bathymetry representation in estimating downstream flows and water levels.
JOURNAL OF HYDROLOGY
(2021)
Review
Marine & Freshwater Biology
Danielle Katharine Petsch, Vivian de Mello Cionek, Sidinei Magela Thomaz, Natalia Carneiro Lacerda dos Santos
Summary: River-floodplain ecosystems (RFEs) provide multiple ecosystem services, including supporting, regulating, provisioning, and cultural ecosystem services. Despite facing serious threats, RFEs are important for various benefits to society.
Article
Ecology
Joseph Okotto-Okotto, Phillip O. Raburu, Kevin O. Obiero, Gilbert O. Obwoyere, John M. Mironga, Lorna G. Okotto, Elizabeth A. Raburu
Article
Biochemistry & Molecular Biology
Jesse Hornstein, Emmanuelle Pales Espinosa, Robert M. Cerrato, Kamazima M. M. Lwiza, Bassem Allam
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY
(2018)
Article
Environmental Sciences
N. J. Gownaris, K. J. Rountos, L. Kaufman, J. Kolding, K. M. M. Lwiza, E. K. Pikitch
JOURNAL OF GREAT LAKES RESEARCH
(2018)
Article
Oceanography
Kelsey Brunner, David Rivas, Kamazima M. M. Lwiza
JOURNAL OF PHYSICAL OCEANOGRAPHY
(2019)
Article
Environmental Sciences
Konstantine J. Rountos, Jennifer J. Kim, Theresa K. Hattenrath-Lehmann, Christopher J. Gobler
MARINE ENVIRONMENTAL RESEARCH
(2019)
Article
Fisheries
Kevin Odhiambo Obiero, Herwig Waidbacher, Bryan Otieno Nyawanda, Jonathan Mbonge Munguti, Julius Otieno Manyala, Boaz Kaunda-Arara
AQUACULTURE INTERNATIONAL
(2019)
Article
Environmental Sciences
F. Jorge Bornemann, David P. Rowell, Barbara Evans, Dan J. Lapworth, Kamazima Lwiza, David M. J. Macdonald, John H. Marsham, Kindie Tesfaye, Matthew J. Ascott, Celia Way
Editorial Material
Environmental Sciences
Kevin Obiero, Ted Lawrence, Jessica Ives, Stephanie Smith, Friday Njaya, Robert Kayanda, Herwig Waidbacher, Dan Olago, Evans Miriti, R. E. Hecky
JOURNAL OF GREAT LAKES RESEARCH
(2020)
Article
Fisheries
Daniel Pascucci, Christopher J. Gobler, Konstantine J. Rountos
Summary: Research showed that exposure to intermediate concentrations of Cochlodinium polykrikoides led to significant reductions in the feeding behavior of sheepshead minnow larvae, regardless of their feeding status prior to experimentation. These findings have important implications for the feeding behavior of ichthyoplankton under similar concentrations typically found during mild blooms or at the periphery of dense blooms.
JOURNAL OF FISH BIOLOGY
(2021)
Article
Environmental Sciences
Xiayan Ye, Konstantine J. Rountos, Cheng-Shiuan Lee, Nicholas S. Fisher
Summary: Research shows that both artificial and natural food sources containing MeHg can impact the growth and swimming activity of Sheepshead minnow larvae, especially under low food intake conditions. Additionally, Sheepshead minnows may exhibit tolerance to MeHg, particularly when food is abundant.
MARINE ENVIRONMENTAL RESEARCH
(2021)
Article
Multidisciplinary Sciences
Kevin Okoth Ouko, Adrian Wekulo Mukhebi, Kevin Odhiambo Obiero, Florence Achieng Opondo
Summary: This study identifies socio-psychological factors influencing Kenyan pond and cage farmers' adoption of Black Soldier Fly Larvae (BSFL). The research shows that attitude towards use has the strongest effect on intention to adopt BSFL, and perceived usefulness has a greater influence than perceived ease of use. These findings have direct implications for policy development and the potential use of BSFL in aquaculture.
Article
Biology
A. O. Achieng, G. B. Arhonditsis, N. Mandrak, C. Febria, B. Opaa, T. J. Coffey, F. O. Masese, K. Irvine, Z. M. Ajode, K. Obiero, J. E. Barasa, B. Kaunda-Arara
Summary: Africa is facing extensive biodiversity loss due to environmental changes, lack of data and resources, as well as insufficient capacity to implement conservation measures. The lack of harmonized indicators and databases further hinders effective policies and monitoring. The article emphasizes the importance of establishing monitoring programs to inform evidence-based decisions for ecosystem conservation and restoration in Africa.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2023)
Article
Agriculture, Multidisciplinary
Kevin Okoth Ouko, Jimmy Brian Mboya, Kevin Odhiambo Obiero, Erick Ochieng Ogello, Adrian Wekulo Mukhebi, Mavindu Muthoka, Jonathan Mbonge Munguti
Summary: This study evaluates the factors influencing fish farmers' awareness of using black soldier fly larvae meal as an ingredient in fish feeds. The results show that fish farming experience, distance to feed sources, farmers' income, and knowledge about existing feed significantly influence the farmers' awareness about black soldier fly larvae meal. It highlights the importance of communication and farmer education in improving awareness and suggests the need for institutions to enhance awareness through local media.
COGENT FOOD & AGRICULTURE
(2023)