Article
Environmental Sciences
Yoav Bornstein, Ben Dayan, Amir Cahn, Scott Wells, Mashor Housh
Summary: This paper presents a low-cost paradigm of an Environmental Decision Support System (EDSS) as a Service using open-source technologies and cloud computing, aiming to significantly reduce assimilation costs for organizations and researchers working on the rehabilitation and preservation of water bodies.
Article
Environmental Sciences
Julie Terry, Karl-Erich Lindenschmidt
Summary: This study evaluates the impact of interbasin water transfers on the water quality of a prairie reservoir and suggests that it can improve water quality. However, increased transfers during winter may cause ice damage to the river channel.
Article
Engineering, Civil
Lei Zhao, Sihang Cheng, Yanxin Sun, Rui Zou, Wenjing Ma, Qichao Zhou, Yong Liu
Summary: The thermal structure of Lake Erhai is mainly influenced by geothermal heat transfer and external energy input. Calibration of the hydrodynamics model showed the importance of bottom water temperature in accurately simulating the lake's thermal structure. Factors such as wind speed and inflow temperature can affect the thermal structure of Lake Erhai.
JOURNAL OF HYDROLOGY
(2021)
Article
Environmental Sciences
Afshin Shabani, Xiaodong Zhang, Xuefeng Chu, Haochi Zheng
Summary: The study proposed an Improved Global-Best Harmony Search (IGHS) algorithm for automatic calibration of the CE-QUAL-W2 model, which outperformed the traditional PSO algorithm in improving the accuracy of water temperature simulation in the tested example.
Article
Water Resources
Amin Esmaeilzadeh Hanjaniamin, Mahdi Sarai Tabrizi, Hossein Babazadeh
Summary: One of the important issues in water resources quality management is determining the levels of eutrophication and dissolved oxygen. A qualitative study using the CE-QUAL-W2 model showed that the Yamchi dam reservoir experiences a sharp decrease in dissolved oxygen concentration during summer, indicating the need for improvement measures. Recommended strategies include reducing retention time, dewatering from the bottom layers, and preventing agricultural drains from entering the reservoir.
APPLIED WATER SCIENCE
(2023)
Article
Environmental Sciences
Julie Terry, Karl-Erich Lindenschmidt
Summary: This study used water quality models to investigate the potential impacts of changing flow management and climate change on water quality in the Canadian Prairies. The results showed that flow management could have a positive impact on reservoir water quality in the face of future climate change.
Article
Environmental Sciences
E. Akomeah, L. A. Morales-Marin, M. Carr, A. Sadeghian, K. E. Lindenschmidt
Summary: Climate change is projected to greatly impact the nutrient speciation in Lake Diefenbaker, leading to increased levels of nutrients, particularly nitrogen and phosphorus. Winter and spring are identified as periods of nitrogen pollution, while summer may see an increase in cyanobacteria blooms.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Water Resources
Samah Larabi, Markus A. Schnorbus, Francis Zwiers
Summary: This study developed a model for the Nechako Reservoir in Canada to simulate the response of water quantity and quality to future climate change. The results showed that the water temperature in the reservoir is sensitive to changes in meteorological and hydrological conditions and that the Summer Temperature Management Program may not be effective in providing cool water in a warming climate.
JOURNAL OF HYDROLOGY-REGIONAL STUDIES
(2022)
Article
Water Resources
Iran Eduardo Lima Neto
Summary: This study uses a 2-D hydrodynamic model to simulate water quality dynamics in a tropical reservoir in Brazil. The model predicts well the seasonal variations of temperature, dissolved oxygen, chlorophyll a, and phosphate. The results show that phosphate exhibits complete mixing behavior and increases from the wet to the dry season, while temperature, dissolved oxygen, and chlorophyll a show alternating stratification-destratification patterns. The modeling approach developed in this study is proposed as a simple way to address data scarcity, urban pollution, and hydroclimatic seasonality in tropical reservoirs.
RBRH-REVISTA BRASILEIRA DE RECURSOS HIDRICOS
(2023)
Article
Environmental Sciences
Humberto Tavera-Quiroz, Mauricio Rosso-Pinto, Gerardo Hernandez, Samuel Pinto, Fausto A. Canales
Summary: This study used the CE-QUAL-W2 model to simulate the hydrodynamics of the URRa Reservoir in Cordoba, Colombia, to understand water quality. The model was found to be applicable in tropical lentic systems, but it is recommended to use hourly data for future studies to better adapt to unstable inflow and boundary conditions.
Article
Environmental Sciences
F. Masoumi, S. Masoumzadeh Sayyar, P. Valizadeh, M. R. Nikoo, A. Al-Nuaimi, A. Sana
Summary: While it is important to monitor water quality in reservoirs, consistently measuring different quality parameters can be challenging. A solution to this is to create accurate numerical models, although this process can have its own problems. One major issue is the large number of parameters and the associated uncertainty. The paper presents an uncertainty-based auto-calibrated two-dimensional water quality and hydrodynamic model that simulates eutrophication in the Karkheh Reservoir in Iran.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Environmental Sciences
Marta Basso, Marcos Mateus, Tiago B. Ramos, Diana C. S. Vieira
Summary: Wildfires in the Mediterranean region pose an increasing threat, impacting vegetation, soil, and surface water quality, threatening human health. A study in Portugal's Lisbon metropolitan area showed post-fire degradation of surface water in the reservoir, with simulation results indicating water quality deterioration near the dam wall, yet not exceeding water quality standards likely due to reservoir capacity to attenuate inflow concentrations.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2021)
Article
Engineering, Civil
Wei He, Aili Jiang, Jian Zhang, Hui Xu, Xiaodong Yu, Sheng Chen, Yang Xiao
Summary: Temperature stratification in reservoirs affects thermal stability and water exchange. Multiobjective optimization models can help improve hydropower generation while reducing temperature stratification. In certain cases, increasing inflow can weaken temperature stratification, leading to improved thermal regimes in reservoirs.
JOURNAL OF HYDROLOGY
(2022)
Article
Green & Sustainable Science & Technology
Sofia Midauar Gondim Rocha, Joao Victor Barros da Silva, Wictor Edney Dajtenko Lemos, Francisco de Assis de Souza Filho, Iran Eduardo Lima Neto
Summary: This study assessed the hydrodynamic processes of a multiple-use reservoir located in the Brazilian semiarid region and found that the wet season had a more stable stratification and there was a strong correlation between rainfall and reservoir hydrodynamics.
Article
Water Resources
Christina W. Tsai, Chen-Hsin Chiang, Stanley W. Shen
Summary: Reservoir eutrophication was studied using a model, which was calibrated and validated with field data. Three pollutant remediation scenarios were investigated, considering operational uncertainty. Probabilistic eutrophication risk mapping was established to facilitate decision-making.
JOURNAL OF HYDROLOGY-REGIONAL STUDIES
(2022)
Article
Ecology
Douglas Rodrigues, Alexandre Fernandes, Alessandro Filippo, Bjorn Kjerfve, Ligia Pinto, Ramiro Neves
Summary: Previous studies attributed the eastward current in the Ilha Grande channel to density differences within the bay, but new research suggests it is caused by density field adjustments in the adjacent shelf and oceanic region. This indicates the presence of a permanent eastward along-channel current circulation within the channel.
REGIONAL STUDIES IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Hilda de Pablo, Joao Sobrinho, Daniel Garaboa-Paz, Caio Fonteles, Ramiro Neves, Miguel B. Gaspar
Summary: Understanding the retention time and flushing rate of water in an estuary is crucial for assessing the health of estuaries with high pollutant loadings. This study examines the impact of different river discharge scenarios on the residence time and exposure time of water in the Tagus estuary, identifying the areas most vulnerable to pollution.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Pedro Victor Valadares Romanholo, Thiago Eduardo Pereira Alves, Jhilmil Swapnalin, P. Banerjee, A. Franco Jr
Summary: Zinc substituted cobalt, magnesium and nickel ferrites were prepared using combustion reaction techniques. Zinc substitution led to an increase in crystal parameters and band shift in FTIR spectra. Magnetic measurement results showed that zinc substitution mainly occurred in tetrahedral site, and maximum saturation magnetization and anisotropy value were observed for the Co-CoZn pairs.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Environmental Sciences
Ana R. Oliveira, Tiago B. Ramos, Lucian Simionesei, Maria C. Goncalves, Ramiro Neves
Summary: Hydrological modeling is critical for evaluating water availability at different scales. In this study, the MOHID-Land model was used to simulate natural flow regime in watersheds of the Iberian Peninsula. Results showed the difficulties in modeling streamflow, but also represented a step towards the accurate assessment of water resources availability.
Article
Chemistry, Multidisciplinary
Bhargavi Koneru, Jhilmil Swapnalin, Srinivasan Natarajan, Adolfo Franco Jr, Prasun Banerjee
Summary: In this study, a facile synthesis method for MXene/bismuth ferrite nanocomposites was reported using hydrazine hydrate induced with the hydrothermal method, preventing the formation of Bi25FeO39 inside the matrix. The composite displayed enhanced dc conductivity and minimal magnetic loss, making it a promising two-dimensional multiferroic material.
Article
Engineering, Marine
Francisco Campuzano, Flavio Santos, Lucian Simionesei, Ana R. Oliveira, Estrella Olmedo, Antonio Turiel, Rodrigo Fernandes, David Brito, Marco Alba, Antonio Novellino, Ramiro Neves
Summary: The coupling of coastal or regional ocean models to hydrological models or observed data is not commonly practiced in operational oceanography. This study proposes an integrated methodology that ranges from watershed models to validation in the coastal area, aiming to explore the results obtained by using more sophisticated land boundary conditions based on advanced hydrologic models combined with observation networks.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Marine & Freshwater Biology
Hilda de Pablo, Joao Sobrinho, Susana Nunes, Alexandre Correia, Ramiro Neves, Miguel B. Gaspar
Summary: The study investigates the impact of river nutrients on the Tagus estuary and adjacent marine ecosystems, using a model to determine seasonal nutrient fluxes. The results show that the main nutrient fluxes are concentrated in the central and main body of the estuary. The study also reveals that the seasonal abundance of phytoplankton is the main driver of the differences in nutrient fluxes, and that river discharge is closely related to the amount of nutrients exported to the coastal area.
ESTUARINE COASTAL AND SHELF SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Jhilmil Swapnalin, Bhargavi Koneru, P. Banerjee, Srinivasan Natarajan, A. Franco Jr
Summary: Ferrimagnetic solid phase cobalt ferrite (CoFe2O4) was successfully intercalated into two-dimensional (2D) MXene (Ti3C2Tx) flakes through hydrothermal synthesis, forming a structure with metallic behavior and vibrational bands, exhibiting excellent electromagnetic properties.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2022)
Article
Physics, Condensed Matter
M. Goncalves, J. Matilla-Arias, Francisca P. Araujo, Y. Guerra, Bartolomeu C. Viana, Edson C. Silva-Filho, Josy A. Osajima, Luciano C. Almeida, A. Franco Jr, R. Pena-Garcia
Summary: In this study, the structural, optical, and magnetic properties of Y3-xCexFe5-yEry(O12) compound were investigated. The results showed that rare earth dopants influenced the lattice structure and optical properties, with Er3+ having the highest probability of occupying octahedral sites.
PHYSICA B-CONDENSED MATTER
(2022)
Article
Physics, Condensed Matter
Maykon Alves Lemes, Felipe Terra Martins, H. V. S. Pessoni, A. Franco Jr
Summary: This study investigated the magnetic properties of the [Mn(ampyz)(AcO)2(H2O)]n compound, revealing spin canting and long-range ferromagnetic ordering at low temperatures. The presence of weak antiferromagnetic interactions mediated by the bridging ligand and non-negligible interchain correlations were quantitatively indicated.
PHYSICA B-CONDENSED MATTER
(2022)
Article
Agronomy
Vera Zina, Andre Fonseca, Goncalo Duarte, Sofia Conde, Maria Rosario Fernandes, Maria Teresa Ferreira, Jose Carlos Franco
Summary: This study assessed the role of ecological infrastructures (EI) in promoting ant biodiversity in floodplain Mediterranean agricultural crops. The results showed that EI supported higher ant diversity and specialized ant community, and ant richness was influenced by location and crop type. Additionally, ant richness was associated with the area of terrestrial EI in the surrounding landscape and the absence of invasive Argentine ant.
Article
Physics, Condensed Matter
Bhargavi Koneru, Jhilmil Swapnalin, Srinivasan Natarajan, A. Franco Jr., P. Banerjee
Summary: In this study, bismuth ferrite ceramics with various stoichiometric imbalances were successfully synthesized using the pressure-less sintering technique. The results showed that the stoichiometric imbalances played a significant role in influencing the conductivity and ion dynamics of the ceramics.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Green & Sustainable Science & Technology
Joao Barreiro, Flavio Santos, Filipa Ferreira, Ramiro Neves, Jose S. Matos
Summary: Urban pluvial floods occur when drainage systems cannot handle the runoff from intense rainfall. Cities are facing challenges in controlling such floods due to urbanization, more extreme rainfall, and rising tide levels. Traditional one-dimensional drainage models are insufficient for studying adaptation strategies. This paper presents a 1D/2D urban flood model that integrates key processes like stormwater interception and manhole overflows. The model is tested in a synthetic street case study and a real case study in Albufeira, Portugal, showing potential for better decision-making in urban flood risk management.
Article
Environmental Sciences
Ana Ramos Oliveira, Tiago Brito Ramos, Ramiro Neves
Summary: This study compares the performance of three different neural network models for estimating daily streamflow under a natural flow regime. The models include multi-layer perceptron, long short-term memory, and convolutional neural network, and different combinations of input variables were considered. The optimized models showed that the convolutional neural network performed the best, achieving a Nash-Sutcliffe efficiency of 0.86 and a root mean square error of 4.2 m(3) s(-1). The best input variables were accumulated precipitation values of 1 to 5 and 10 days, delayed by 1 to 7 days.
Article
Biology
Paulo Branco, Ana Margarida Mascarenhas, Goncalo Duarte, Filipe Romao, Ana Quaresma, Susana Dias Amaral, Maria Teresa Ferreira, Antonio N. Pinheiro, Jose Maria Santos
Summary: River artificial fragmentation is a major threat to freshwater fish species. Fishways are commonly used to improve connectivity, with vertical slot fishways (VSF) being considered the best solution. In this study, data from fishway studies were analyzed using Bayesian Generalized Mixed Models to identify variables affecting fish passage and determine the best VSF configuration. The results showed that fish size was the main predictor for fish passage, and multiple slot fishways with an orifice performed the best. Further work should focus on improving fishway design for small-sized fish.
