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... The use of integrated flood models represents an approach of growing interest in the literature, being the hydrological and hydrodynamic flood processes described entirely within the two-dimensional (2D) hydrodynamic unsteady flow equations. Due to its ability in simulating complex spatial–temporal dependence of both the hydrodynamic and hydrologic responses of a catchment to rainfall events, this ...
Aulacoseira; Bacillariophyceae; Cannabis sativa; Cyanobacteria; Stephanodiscus; eutrophication; hemp; humans; lakes; land use; landscapes; livestock; plankton; pollen; tourism; water quality; watersheds; France
Abstract:
... Nowadays Lake Aydat is an important site for tourism activities but blooms of cyanobacteria induced some restriction for aquatic activities by humans and their livestock. Thus, it was important to understand the lake's history as it should help in the development of restoration strategies to improve water quality in the future. Lake Aydat had a complex history affected by climatic changes and huma ...
Cyanobacteria; atmospheric deposition; freshwater; isotopes; littoral zone; nitrogen; nitrogen fixation; primary productivity; research; seagrasses; sediments; total nitrogen; watersheds; Australia
Abstract:
... Nitrogen (N) is often the key nutrient limiting primary production in coastal waters. Quantifying sources and sinks of N is therefore critical to understanding the factors that underpin the productivity of coastal ecosystems. Constraining nitrogen inputs can be difficult for some terms such as N fixation and marine exchange as a consequence of uncertainties associated with scaling and stochasticit ...
... Models of ecological response to multiple stressors and of the consequences for ecosystem services (ES) delivery are scarce. This paper describes a methodology for constructing a BBN combining catchment and water quality model output, data, and expert knowledge that can support the integration of ES into water resources management. It proposes “small group” workshop methods for elucidating expert ...
... With the process of poverty eradication and economic growth, hydropower development becomes increasingly important because of its huge potential advantages in the Lancang-Mekong River Basin. However, the complex topography and rich resource endowments in the Lancang-Mekong River Basin bring a variety of potential risks and uncertainties in hydropower development, which has an important impact on t ...
altitude; case studies; comparative study; geodesy; rivers; spatial data; watersheds; Brazil
Abstract:
... Digital elevation models (DEMs) provide important support to research since these data are freely available for almost all areas of the terrestrial surface. Thus, it is important to assess their accuracy for correct applicability regarding the correct use scale. Therefore, this paper aims to assess the vertical accuracy of ALOS PALSAR, GMTED2010, SRTM, and Topodata DEMs according to the Brazilian ...
forests; land use change; rangelands; support vector machines; watersheds; Iran
Abstract:
... The Gorgan-rud river basin in the northeast of Iran has undergone extensive land use changes causing floods during the past decades. This study aims to investigate land use change and its correspondence to flood events during 1987–2017 in the study area. Six pixel- and object-based classifications algorithms were used for land use change modeling. The objected-oriented support vector machine with ...
basins; ecology; hydrologic models; lakes; nonpoint source pollution; point source pollution; pollution control; prediction; rivers; sustainable development; water; water pollution; watersheds; China
Abstract:
... To solve increasingly serious water pollution problems, it is necessary to systematically manage water resources, water environment, and water ecology as elements of a watershed. Comprehensive watershed water pollution control should regard the basin as a whole, respect the natural laws of the river and lake system, and focus on the protection and restoration of its natural ecological environment ...
... Modeling network‐scale sediment (dis)connectivity and its response to anthropic pressures provides a baseline understanding of river processes and sediment dynamics that can be used to forecast future hydro‐morphological changes in river basins. However, this requires a solid understanding of how a system is currently operating, and how it operated in the past. We present the basin‐scale, dynamic ...
climate change; geographic information systems; irrigation; landscapes; lidar; microclimate; orthophotography; rain; renewable resources; vegetation; water supply; watersheds; Arizona
Abstract:
... The increased demand for water along with limited water supply and climate change has brought about water access challenges globally. Novel and sustainable water management systems are needed for addressing the imbalance between the increasing water demand and limited water resources. Rainwater as a renewable resource presents great potential to help achieve this goal. This study focuses on an imp ...
... This article presents and reviews the soil salinity data provided by a rescued vintage agronomic report on an irrigated area of 35,875 ha located in the center of the Ebro River basin, in the NE of mainland Spain. These data come from a soil sampling campaign conducted from May to the first half of July 1975 for the purpose of delineating saline and non-saline soils. The agronomic report was produ ...
... We investigated the detrital influx, chemical weathering intensity, provenance and pedogenesis over the past 2,500 years in the catchment of Pookot Lake, southern India. The down-core variations of metal/Al ratios (Na/Al, K/Al, Mg/Al, Ca/Al, Fe/Al, Mn/Al, Zn/Al, Ba/Al) of the Pookot sediments indicate changes in the rainfall-induced terrigenous inflow to the lake. In contrast, fluctuations in the ...
administrative management; climate; energy; equations; evaporation; evapotranspiration; models; regression analysis; runoff; soil water; water storage; water supply; watersheds
Abstract:
... Fu’s equation has been widely adopted to examine the regional (inter-catchment) variability of the water balance at the catchment scale due to the simplicity and effectiveness of the Budyko framework. Fu’s equation has also been used to analyze the temporal (inter-annual) variability of the water balance, but ignoring inter-annual storage changes is a recognized weakness. The regional variability ...
administrative management; flood damage; hydrograph; hydrologic data; land use change; rain; runoff; watersheds
Abstract:
... In the current study, a novel method is proposed to analyze the simultaneous impacts of non-stationarity in hydrological time series and land-use changes in urban areas to predict future floods and probable damage. For this purpose, rainfall frequency and land-use changes analyses were conducted for two time periods (first: 1979–2009 and second: 1979–2019), and the results were compared. Then, hyd ...
... Anthropogenic and climatic perturbations redistribute arsenic (As), antimony (Sb), and selenium (Se) within the environment. The speciation characteristics of these elements determine their behavior and biogeochemical cycling, but these redox-sensitive species are challenging to capture, with few methods able to harmonize measurements across the whole plant-soil-ecosystem continuum. In this study, ...
... Owing to data scarcity, the soil properties of the Colombian “Piedemonte Llanero” are poorly quantified. To provide basic information about how pedogenic properties along a steeply sloped and perhumid landscape are related to its use (which can help lead toward better management and establishment of a sustainable crop production system), this work addresses the characterization of the morphogeneti ...
... The sustainable management of water resources, whether surface or underground, requires the identification of the flows involved and the possibility of achieving the water balance of the water resource. These require knowledge of the main flow components with a sufficient level of accuracy. Hydrological simulation models are valuable tools for studying flow at the watershed scale but rely on data ...
case studies; ecosystems; environmental health; models; risk assessment; sewage; socioeconomic factors; water; water quality; watersheds; China
Abstract:
... The DPSIR model is a conceptual model established by the European Environment Agency to solve environmental problems. It provides an overall framework for analysis of environmental problems from five aspects: driving force (D), pressure (P), state (S), impact (I), and response (R). Through use of the DPSIR model framework, this paper presents the SEEC model approach for evaluating watershed ecolog ...
autocorrelation; cluster analysis; decision making; floodplains; hydrologic models; land use; regression analysis; research; stream flow; water; watersheds; China; Yellow River
Abstract:
... Streamflow simulations at daily time steps are vital to water resources management, especially in arid regions. Previously, data‐driven models have been used as an effective tool for daily streamflow simulation. However, the accuracy of conventional data‐driven approaches is affected by the temporal autocorrelation of daily streamflow, especially in irrigated watersheds where the persistence of sa ...
Japan; basins; bias; hydrologic models; satellites; water management; watersheds
Abstract:
... Precipitation is a crucial input for hydrological models to achieve various purposes such as water resource management and flood forecasting. However, precipitation stations are usually limited in number and eccentric in location. Although satellite precipitation products (SPPs) have improved remarkably, their application to data-sparse areas for flow simulation has significant limitations due to ...