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Encyclopedia > Water stagnation
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Natural environment

Water stagnation occurs when water stops flowing. Stagnant water can be a major environmental hazard. Image File history File links Wiki_letter_w. ... The Silver Lining is Soul Asylums long-awaited follow-up to the 1998 studio release Candy from a Stranger. ... Pollution is the release of environmental contaminants. ... Before flue gas desulfurization was installed, the emissions from this power plant in New Mexico contained excessive amounts of sulfur dioxide. ... Acid rain (or more accurately acid precipitation)[1] occurs when sulfur dioxide and nitrogen oxides are emitted into the atmosphere, undergo chemical transformations and are absorbed by water droplets in clouds. ... An air quality measurement station in Edinburgh, Scotland The Air Quality Index (AQI) is a standardized indicator of the air quality in a given location. ... Atmospheric dispersion modeling is performed with computer programs that use mathematical equations and algorithms to simulate how pollutants in the ambient atmosphere disperse in the atmosphere. ... The haloalkane (also known as halogenoalkanes) are a group of chemical compounds, consisting of alkanes, such as methane or ethane, with one or more halogens linked, such as chlorine or fluorine, making them a type of organic halide. ... NASA photograph showing aircraft contrails and natural clouds. ... Global mean surface temperatures 1850 to 2006 Mean surface temperature anomalies during the period 1995 to 2004 with respect to the average temperatures from 1940 to 1980 Global warming is the observed increase in the average temperature of the Earths atmosphere and oceans in recent decades and the projected... Severe haze affecting Ampang, Kuala Lumpur, Malaysia in August 2005 Moon over red and blue haze For other uses, see Haze (disambiguation). ... Indoor Air Quality (IAQ) deals with the content of interior air that could affect health and comfort of building occupants. ... Global monthly average total ozone amount The term ozone depletion is used to describe two distinct but related observations: a slow, steady decline of about 3 percent per decade in the total amount of ozone in Earths stratosphere during the past twenty years; and a much larger, but seasonal... Particulates, alternatively referred to as particulate matter (PM), aerosols or fine particles, are tiny particles of solid (a smoke) or liquid (an aerosol) suspended in a gas. ... Victorian London was notorious for its thick smogs, or pea-soupers, a fact that is often recreated to add an air of mystery to a period costume drama. ... Roadway air dispersion is applied to highway segments Roadway air dispersion modeling is the study of air pollutant transport from a roadway or other linear emitter. ... this page is a Stub....Please feel free to add Examples of Biological pollution; Fish that escape from aquaculture facilities may harm wild fish populations through competition and interbreeding, or by spreading diseases and parasites. ... Lantana Invasion of abandoned citrus plantation; Moshav Sdey Hemed, Israel; May 2, 2006 The term invasive species refers to a subset of those species defined as introduced species or non-indigenous species. ... Water pollution is a large set of adverse effects upon water bodies such as lakes, rivers, oceans, and groundwater caused by human activities. ... Eutrophication is caused by the increase in an ecosystem of chemical nutrients, typically compounds containing nitrogen or phosphorus. ... It has been suggested that this article or section be merged into Hypoxia (medical). ... Pumping of highly toxic (dark black) sludge, much seeps back into the ocean in the form of particles. ... Ocean acidification is the name given to the ongoing decrease in the pH of the Earths oceans, caused by their uptake of anthropogenic carbon dioxide from the atmosphere. ... An oil spill is mine the unintentional release of liquid petroleum hydrocarbon into the environment as a result of human activity. ... Ship pollution is the pollution of water by shipping. ... Runoff flowing into a stormwater drain Surface runoff is water, from rain, snowmelt, or other sources, that flows over the land surface, and is a major component of the water cycle[1][2]. Runoff that occurs on surfaces before reaching a channel is also called overland flow. ... Thermal pollution is a temperature change in natural water bodies caused by human influence. ... Wastewater is any water that has been adversely affected in quality by anthropogenic influence. ... Waterborne diseases, according to the World Health Organization, are those which generally arise from the contamination of water by feces or urine, infected by pathogenic viruses or bacteria, and which are directly transmitted when unsafe water is drunk or used in the preparation of food. ... Water quality is the chemical and physical characterization of water. ... Excavation of leaking underground storage tank causing soil contamination Soil contamination is the presence of man-made chemicals or other alteration of the natural soil environment. ... Bioremediation can be defined as any process that uses microorganisms, fungi, green plants or their enzymes to return the environment altered by contaminants to its original condition. ... This article or section does not cite its references or sources. ... A cropduster spreading pesticide. ... The radiation warning symbol (trefoil). ... This article about actinides in the environment is about the sources, environmental behaviour and effects of actinides in the environment. ... The environmental radioactivity page is devoted to the subject of radioactive materials in man and his environment. ... Fallout is the residual radiation hazard from a nuclear explosion, so named because it falls out of the atmosphere into which it is spread during the explosion. ... Radiation Hazard symbol. ... This time exposure photo of New York City shows sky glow, one form of light pollution. ... Noise pollution, usually called environmental noise in technical venues, is displeasing human or machine created sound that disrupts the environment. ... Radio spectrum pollution is the straying of waves in the radio and electromagnetic spectrums outside their allocations that cause problems for some activities. ... Visual pollution is the term given to unattractive visual elements of a vista, a landscape, or any other thing that a person might want to look at. ... A Clean Air Act describes one of a number of pieces of legislation relating to the reduction of smog and atmospheric pollution in general. ... The Clean Water Act, 33 U.S.C.A. § 1251 et seq. ... Kyoto Protocol Opened for signature December 11, 1997 in Kyoto, Japan Entered into force February 16, 2005. ... This act gave authority to Surgeon General to make programs to reduce or eliminate water pollution in rivers, underground rivers, and other waterways. ... This is a list of environmental organizations, organizations that preserve, analyze or monitor the environment in different ways. ... The Department for Environment, Food and Rural Affairs (Defra) is the United Kingdom government department responsible for environmental protection, food production and standards, agriculture, fisheries and rural communities. ... EPA redirects here. ... Global Atmosphere Watchs logo The Global Atmosphere Watch (GAW) is a worldwide system established by the World Meteorological Organization – a United Nations agency – to monitor trends in the Earths atmosphere. ... Greenpeace protest against Esso / Exxon Mobil. ... The National Ambient Air Quality Standards (NAAQS) are standards established by the United States Environmental Protection Agency that apply for outdoor air throughout the country. ... This article does not adequately cite its references or sources. ... Impact of a drop of water. ... Environmental hazard is a generic term for any situation or state of events which poses a threat to the surrounding environment. ...



Malaria and dengue are among main dangers of stagnant water, which can become a breeding ground for the mosquitoes that transmit these diseases. Malaria is a vector-borne infectious disease that is widespread in tropical and subtropical regions. ... For music group see Dengue Fever (rock band) Dengue and dengue hemorrhagic fever (DHF) are acute febrile diseases, found in the tropics, with a geographical spread similar to malaria. ... This article is about the insect; for the WWII aircraft see De Havilland Mosquito. ...

Stagnant water is dangerous for drinking because of greater rate of the reproduction of bacteria and potential parasites. Phyla Actinobacteria Aquificae Chlamydiae Bacteroidetes/Chlorobi Chloroflexi Chrysiogenetes Cyanobacteria Deferribacteres Deinococcus-Thermus Dictyoglomi Fibrobacteres/Acidobacteria Firmicutes Fusobacteria Gemmatimonadetes Lentisphaerae Nitrospirae Planctomycetes Proteobacteria Spirochaetes Thermodesulfobacteria Thermomicrobia Thermotogae Verrucomicrobia Bacteria (singular: bacterium) are unicellular microorganisms. ... A parasite is an organism that spends a significant portion of its life in or on the living tissue of a host organism and which causes harm to the host without immediately killing it. ...

Causes and prevention

Stagnant water may be classified into the following basic, although overlapping, types:

  • Water body stagnation: stagnation in lakes, lagoons, rivers, etc.
  • Surface and ground water stagnation
  • Trapped water stagnation. The water may be trapped in human artifacts (discarded cans, plant pots, tires, dug-outs, roofs, etc.), as well as in natural containers, such as hollow tree trunks, leaf sheaths, etc.

To avoid ground and surface water stagnation, drainage of surface and subsoil is advised. Areas with a shallow water table are more susceptible to ground water stagnation due to the lower availability of natural soil drainage. A body of water is any significant natural pool of water such as an ocean, a lake, or a river, covering the Earth or another planet. ... A man-made lake in Keukenhof, Netherlands A lake is a body of water or other liquid of considerable size surrounded by land. ... This mid bay barrier in Narrabeen, a suburb of Sydney (Australia), has blocked what used to be a bay to form a lagoon. ... For other uses, see River (disambiguation). ... Groundwater is any water found below the land surface. ... The word sheath has a number of related meanings in English. ... Cross section showing the water table varying with surface topography as well as a perched water table The water table or phreatic surface is the surface where the water pressure is equal to atmospheric pressure. ...

Excessive watering may cause ground or surface water stagnation.

Life in stagnant water

Mosquito larvae in stagnant water
Mosquito larvae in stagnant water

Some plants prefer flowing water, while others, such as lotuses, prefer stagnant water. Mosquito Larvae Taken by fir0002 File links The following pages link to this file: Mosquito Categories: GFDL images ... Mosquito Larvae Taken by fir0002 File links The following pages link to this file: Mosquito Categories: GFDL images ... A larva (Latin; plural larvae) is a juvenile form of animal with indirect development, undergoing metamorphosis (for example, insects or amphibians). ... Lotus has many definitions. ...

Species that may thrive in stagnant water


Various anaerobic bacteria are commonly found in stagnant water. An anaerobic organism or anaerobe is any organism that does not require oxygen for growth. ... Phyla Actinobacteria Aquificae Chlamydiae Bacteroidetes/Chlorobi Chloroflexi Chrysiogenetes Cyanobacteria Deferribacteres Deinococcus-Thermus Dictyoglomi Fibrobacteres/Acidobacteria Firmicutes Fusobacteria Gemmatimonadetes Lentisphaerae Nitrospirae Planctomycetes Proteobacteria Spirochaetes Thermodesulfobacteria Thermomicrobia Thermotogae Verrucomicrobia Bacteria (singular: bacterium) are unicellular microorganisms. ...

Denitrifying bacteria form a necessary part of the process known as denitrification as part of the nitrogen cycle, their primary purpose being to metabolise nitrogenous compounds, with the assistance of the nitrase reductase enzyme, to turn oxides back to nitrogen gas or nitrous oxides for energy generation. ... Purple bacteria or purple photosynthetic bacteria are proteobacteria that are phototrophic, i. ... Species Leptospira is a genus of spirochaete bacteria, including a small number of pathogenic and saprotrophic microorganisms. ...


Binomial name Channa argus (Cantor, 1842) The northern snakehead (Channa argus) is a fish native to China, Russia, and Korea. ... Binomial name Betta splendens Regan, 1910 The Siamese fighting fish (Betta splendens) is one of the most popular species of freshwater aquarium fish. ... Binomial name Trichopsis pumila (Arnold, 1936) Synonyms Ctenops pumilus (Arnold, 1936) The pygmy gourami (Trichopsis pumila) is a tropical freshwater fish belonging to the Trichopsis genus in the family (Osphronemidae). ... Binomial name Puntius binotatus (Valenciennes, 1842) Nations where Puntius binotatus can be found The spotted barb or common barb, Puntius binotatus, is a tropical freshwater fish belonging to the Cyprininae sub-family of the (Cyprinidae) family. ... Eukaryota > Metazoa > Chordata > Craniata > Vertebrata > Euteleostomi > Actinopterygii > Neopterygii > Semionotiformes > Lepisosteidae Lepisosteidae is a group of Semionotiformes animals that contains: Lepisosteus Lepisosteus oculatus Lepisosteus osseus Lepisosteus platyrhynchus Lepisosteus spatula ... Binomial name Clarias batrachus Linnaeus, 1758 The walking catfish, Clarias batrachus, also known as the magur or pla duk dam, is a species of airbreathing catfish with the ability to walk out of the water and across land. ...


Stagnant water is the favorite breeding ground for a number of insects. Orders See taxonomy Insects (Class Insecta) are a major group of arthropods and the most diverse group of animals on the Earth, with over a million described species — more than all other animal groups combined [1]. Insects may be found in nearly all environments on the planet, although only a...

This article or section does not cite its references or sources. ... Suborders Nematocera Brachycera Dance fly male Empis tesselata The flesh fly, Sarcophaga carnaria Close-up of the head of a blow-fly. ... Families Aeshnidae Austropetaliidae Cordulegastridae Corduliidae Gomphidae Libellulidae Macromiidae Neopetaliidae Petaluridae A dragonfly is any insect belonging to the order Odonata, the suborder Epiprocta or, in the strict sense, the infraorder Anisoptera. ... Genera Nepa Ranatra Nepidae is a family of insects in the order Hemiptera, suborder Heteroptera. ...


Distribution of frogs (in black) Suborders Archaeobatrachia Mesobatrachia Neobatrachia - List of Anuran families The frog is an amphibian in the order Anura (meaning tail-less from Greek an-, without + oura, tail), formerly referred to as Salientia (Latin saltare, to jump). ... A seaweed (Laurencia) up close: the branches are multicellular and only about 1 mm thick. ... Staphylococcus aureus biofilm on an indwelling catheter. ... blue: sea turtles, black: land turtles Suborders Cryptodira Pleurodira See text for families. ... Binomial name Chelus fimbriatus Duméril, 1806 Mata mata (Chelus fimbriatus) is a turtle found predominantly in South America. ...


Pools of stagnant water have been historically used in processing of hemp and some other fiber crops, as well as of linden bark used for making bast shoes. Several weeks of soaking makes bast easily separable due to bacterial and fermentative processes. U.S. Marihuana production permit, from the film Hemp for Victory. ... Fiber crops are field crops grown for their fibers, which are used to make paper or cloth. ... Linden is one of three English names for a genus of trees, Tilia, also known as lime and basswood. ... For other meanings of bark, see Bark (disambiguation). ... A pair of souvenir Russian lapti (primitive kitsch, of wrong shape, construction and weaving pattern) Bast shoes are shoes woven primarily from bast of the linden tree or from birch bark, a kind of basket fit to the shape of a foot. ... Bast are the strong fibers in the phloem of some plants. ...

See also



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