Water stagnation
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Water stagnation occurs when water stops flowing. Stagnant water can be a major environmental hazard.[1]
Dangers
mosquitoes that transmit these diseases.[2]
Stagnant water can be dangerous for drinking because it provides a better incubator than running water for many kinds of
deserts or other areas of low rainfall.[2] Water stagnation for as little as six days can completely change bacterial community composition and increase cell count.[3]
Stagnant water may be classified into the following basic, although overlapping, types:
- Water bodystagnation (stagnation in swamp, lake, lagoon, river, etc.)
- ground watersstagnation
- 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 sheath, 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.
Life that may thrive in stagnant water
Some plants prefer flowing water, while others, such as lotuses, prefer stagnant water.
Various
bast fibers easily separable due to bacterial and fermentative processes known as retting
.
- Denitrifying bacteria
- Leptospira
- Purple bacteria (both sulfur and non-sulfur)
Fish
- Asian swamp eel
- Lepisosteidae(gar)
- Northern snakehead
- Pygmy gourami
- Spotted barb
- Walking catfish
Insects
Stagnant water is the favorite breeding ground for a number of insects.
Other
See also
- Eutrophication (excessive enrichment by nutrients and minerals)
- Slough
- Wetland
- Residence time distribution
- Water pollution
References
- ^ "General Article: Yellow Fever and Malaria in the Canal". Panama Canal (film). American Experience. Boston, MA: WGBH Educational Foundation. 2010. Archived from the original on Nov 29, 2016.
- ^ a b Health Risks Associated with Stagnant Water (PDF) (Report). Recommendations for Occupational Health and Safety Following Disasters. World Health Organization. 2013. Archived from the original (PDF) on November 27, 2014.
- PMID 29588495.
- PMID 21139855.
