water body Articles
-
Hydrodynamics - Natural Water Bodies
The knowledge of the characteristics of the fluids and their ability to transport substances and physical properties is relevant for us. However, the quantification of the movements of fluids is a complex task, and when considering natural flows, occurring in large scales (rivers, lakes, oceans), this complexity is evidenced. This book presents conclusions about different aspects of flows in ...
-
Use of Landsat ETM+ data for delineation of water bodies in hilly zones
The remotely sensed Landsat Enhanced Thematic Mapper Plus (ETM+) dataset is used for the detection and delineation of water bodies in hilly zones. The water bodies were detected using Surface Wetness Index (SWI), Normalised Difference Vegetation Index (NDVI) and a slope map. The assessment of areas under dense vegetation in water bodies is omitted in the combined map prepared using classified ...
-
TFA from HFO‐1234yf: Accumulation and aquatic risk in terminal water bodies
A next‐generation mobile automobile air‐conditioning (MAC) refrigerant, HFO‐1234yf (CF3CF = CH2), is being developed with improved environmental characteristics. In the atmosphere, it ultimately forms trifluoroacetic acid (TFA(A); CF3COOH), which is subsequently scavenged by precipitation and deposited on land and water as trifluoroacetate (TFA; CF3COO‐). Trifluoroacetate is environmentally ...
-
Understanding the drivers of sanitation behaviour in riverine communities of Niger Delta, Nigeria: the case of Odi and Kaiama communities
Recent reports show that between 1990 and 2012, among countries, Nigeria had the highest increase in the absolute number of open defecators. Bayelsa State makes a huge contribution to these numbers as almost 70% of residents lack access to improved sanitation. The adoption of Community-Led Total Sanitation (CLTS) as national policy has improved sanitation in the country, but progress has been ...
-
Supply Concerns Continue, and Uncertainties Complicate Planning
The nation’s water bodies have long supplied Americans with abundant freshwater, but recent events, such as the ongoing California drought, have focused attention on competing demands for this limited resource. In the United States, the states are primarily responsible for managing freshwater resources, and many federal agencies influence states’ management decisions. In 2003, GAO ...
-
Of water and worms: Guinea worm re-emergence in Niger
This paper aims to provide a better understanding of the re-emergence of Guinea worm into the water bodies of the Tillabéri region of the Niger Sahel. It examines the period of re-emergence and subsequent decline from 2002 until 2006. Using a geographic information system combined with a statistical approach to examine the location data of lakes with Guinea worm-associated cases, it is ...
-
Water management and planning in a small island archipelago: the Azores case study (Portugal) in the context of the Water Framework Directive
Water management is critical in small islands such as the Azores (Portugal), and the present paper address changes that have occurred in the last decades through national constitutional arrangements and the adoption of the Water Framework Directive (WFD). The WFD provided an opportunity to implement integrated river basin planning, whose main results are also discussed, surpassing early ...
-
The potential to improve flood simulation and forecasting
The potential to improve flood simulation and forecasting by the use of predicted rainfall data based on radar measurements (virtual gauge) was investigated in two projects. Thus, water level in water bodies could be forecasted at neuralgic point, based on runoff ...
-
Urban impact on water bodies in the Luleå area, northern Sweden, and the role of redox processes
Sediment and water from urban water bodies in the Luleå area, northern Sweden, were studied to determine the degree of contamination from metals and PAHs (polycyclic aromatic hydrocarbons). The heavy metals Cd, Cu, Pb and Zn, which are of main concern in urban stormwater, are enriched in all investigated bays. PAH concentrations were also found to be enriched. The water and sediment ...
-
Benefit–cost analysis of lake conservation with emphasis on aesthetics in developing countries
Urban water bodies like lakes, wetlands and rivers carry a number of intangible benefits. In order to assess true value of societal welfare and benefits derived from these assets, social benefit cost analysis (SBCA) should be preferred. Hedonic pricing method has been used in the present study for capturing the aesthetic benefit of the Sukhna Lake of Chandigarh City and then using the results in ...
-
Linking the management of urban watersheds with the impacts on the receiving water bodies: the use of flow duration curves
There is growing evidence that changes in the current hydrological behaviour of urbanising catchments are a major source of impacts on the downstream water bodies. However, current flow-rates are rarely considered in studies on urban stormwater management, usually focused on extreme flow-rates. We argue that taking into account receiving water bodies is possible with relatively small ...
-
Influence of initial pesticide concentrations in water on chlorpyrifos toxicity and removal by
Iris pseudacorus For understanding the influence of initial concentrations of pesticides in the water body on removal efficiency of the contaminant by aquatic plants, one hydroponics experiment was used to investigate the influence of initial concentration (1–16 mg L−1) on toxicity and chlorpyrifos removal potential of Iris pseudacorus for 20 days under greenhouse conditions. An increased ...
-
Explaining inertia in restoring estuarine dynamics in the Haringvliet (The Netherlands)
Following the 1953 flood, the Dutch delta has been shut off from the sea by a series of dams and dykes. This closing-off transformed the delta from a constantly changing estuarine environment into a freshwater body. A different way of thinking about ‘nature’ in the period 1970–1980 led to the policy proposal to transform the Haringvliet, one of the shut-off water bodies, ...
-
Landscape limnology
Landscape limnology is the spatially-explicit study of lakes, streams, and wetlands as they interact with the freshwater, terrestrial, and human landscapes to determine the effects of pattern on ecosystem processes across temporal and spatial scales. The terrestrial component represents spatial hierarchies of landscape features that influence what materials, whether ...
-
Effects of 17β‐estradiol on emissions of greenhouse gases in simulative natural water body
Environmental estrogens (EEs) are widely spread across the world and becoming more and more seriously contaminating. This paper studies the influence of different concentrations of 17β‐estradiol (E2) on the emissions of main greenhouse gases (CO2, CH4 and N2O) in simulative systems in order to explore the relationship between EEs pollution and greenhouse gases emissions in natural water bodies ...
-
Filtering and retention structures
Filtering and retention structures serve the purification and intermediate storage of rainwater discharge from tilled areas. The untreated rainwater from a seperate sewer system can have a major share in water body pollution. Thereby, especially the concentration of filtratable material is problematic. Additionally, rainwater floats intermittently into the water body. Measures for purification ...
-
Diffuse pollution
Diffuse Pollution or Nonpoint source (NPS) pollution is water pollution affecting a water body from diffuse sources, such as polluted runoff from agricultural areas draining into a river, or wind-borne debris blowing out to sea. Nonpoint source pollution can be contrasted with point source pollution, where discharges occur to a body of water at a single location, such as discharges from a ...
-
Land Zoning in Bangladesh
It is evident that all the identified phenomena or threats to the human race are narrowly related to land. We all need land to live on, to build our shelters on and to extract our food from. Land includes also water bodies, such as the sea, which are becoming more and more important with respect to marine resources. Land cannot always be treated like any other commodity- be it very significant ...
-
Biodiversity of cyanobacteria in Tunisian freshwater reservoirs: occurrence and potent toxicity – a review
In spite of the great environmental and sanitary importance of cyanobacteria, their biodiversity is little known in Tunisia. In this work, a review was carried out, based on literature data, of potentially toxic cyanobacteria occurrence in Tunisia. Microcystis, one of the most widely distributed toxic bloom-forming cyanobacteria genera, was represented by Microcytis wesenbergii, found only in ...
-
Selection Bias Correction For Species Sensitivity Distribution Modelling And Hazardous Concentration Estimation
The species sensitivity distribution (SSD) has been an important development in ecotoxicology and, despite numerous concerns having been raised over many years, it remains the preferred (and often-times mandated) technique for establishing ‘safe’ concentrations of contaminants in receiving water bodies by jurisdictions around the world. Although universally recognised as a crucial ...
Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you