تعريف eutrophication في الإنجليزية الإنجليزية القاموس.
The natural or artificial process of nutrient enrichment whereby a water body becomes filled with aquatic plants and low in oxygen content
The natural or artificial process of nutrient enrichment whereby a water body becomes filled with aquatic plants and low oxygen content The low oxygen level is detrimental to fish
the aging process of a lake, pond, or slow-moving stream, in which organic material (from plants) accumulates and slowly replaces oxygen Eventually, the body of water fills in and becomes dry land In recent years, this process has been accelerated by plant or algae growth in many bodies of water, encouraged by environmental pollution from such sources as detergents containing phosposrus, the leaching of fertilizers, sewage and toxic dumping, and heated water from the cooling systems of power plants and other industries There is concern that greater atmospheric concentrations of CO2 will also accelerate eutrophication (Source: Mintzer, 1992)
The process of nutrient enrichment that causes high productivity and biomass in an aquatic ecosystem Eutrophication is a natural process Cultural eutrophication is the result of increased nutrient loading to a water body due to human activity
The process of enrichment of water bodies by nutrients and the subsequent depletion of dissolved oxygen it produces
The process whereby a body of water becomes rich in dissolved nutrients through natural or man-made processes This often results in a deficiency of dissolved oxygen, producing an environment that favors plant over animal life
Gradual increase in the concentration of phosphorus, nitrogen, and other plant nutrients in an aging aquatic ecosystem such as a lake. The productivity or fertility of such an ecosystem increases as the amount of organic material that can be broken down into nutrients increases. This material enters the ecosystem mainly through runoff that carries debris. Water blooms often develop on the surface, preventing the light penetration and oxygen absorption necessary for underwater life. See also water pollution
Eutrophication refers to the accumulation of nutrients in a lake or landlocked body of water This occurs naturally over many years but has recently been accelerated by fertiliser runoff from farms and sewage input Algal blooms result and their decay removes dissolved oxygen, eliminating aerobic organisms such as fish, and may cause accumulation of sulphide in the water
the over-enrichment of a body of water with nutrients, resulting in excessive growth of organisms and depletion of oxygen concentration
is defined as: the disruption of ecological processes caused by an excess of nutrients in the environment The major effect of eutrophication are: The loss of oligotrophic areas with their plant and animal species; Massive growth of algae ("algal bloom") in surface water, threatening recreation, the fishing industry, and diversity in ecosystems; Pollution of ground water (particularly by nitrogen in the form of nitrates), which threatens drinking water supplies The main substances causing eutrophication are compounds of Phosphorus (P) and Nitrogen (N)
Nutrients (such as fertilizers, sewage, or livestock run-off) stimulate the growth of algae These algal growth spurts, or blooms, soon die off due to lack of food Bacteria decomposes the dead algae, but consumes oxygen in the process No oxygen means fish smother or flee
the process whereby water becomes excessively rich in nutrients and correspondingly deficient, at least seasonally, in oxygen Often accompanied or followed by algal blooms
Enrichment of a water body with nutrients, resulting in excessive growth of phytoplankton, algae, or vascular plants, leading to depletion of oxygen
Nutrient enrichment (Nitrogen/Phosphorus/Carbon) of surface waters This process can increase the growth of algae and aquatic plants Excessive eutrophication can leave waterbodies devoid of most life
A process by which an excess of plant nutrients (e g , nitrogen and phosphorous) reduces the oxygen dissolved within a body of water, producing an environment that does not readily support aquatic life
An oversupply of the essential elements necessary for growth of tiny (microscopic) floating organisms can cause them to experience a population explosion that can quickly cover the surface of the water and block sunlight from larger plants growing underwater and deplete dissolved oxygen
The process by which water becomes enriched with plant nutrients, most commonly phosphorus and nitrogen, thereby causing excessive growth of aquatic plants
This is when a water body, i e a lake or river, is so rich in nutrients that it supports a dense plant population which ultimately kills animal life by depriving it of oxygen
Growth of aquatic plants in a watercourse, caused by high nutrient levels and resulting in low oxygen content of the water When eutrophication occurs as a natural process, the types of aquatic organisms present change slowly with the water quality, however, excessively high nutrient levels bring on too rapid a change, often resulting in the destruction of fish habitat
The process by which a body of water acquires a high concentration of plant nutrients, especially nitrates or phosphates This nutrification promotes algae growth that, when it dies, can lead to the depletion of dissolved oxygen, killing fish and other aquatic organisms While eutrophication is a natural, slow-aging process for a body of water, human activities can greatly accelerate the process
The fertilization of surface waters by nutrients that were previously scarce Eutrophication through nutrient and sediment inflow is a natural aging process by which warm shallow lakes evolve to dry land In many cases human activities are greatly accelerating the process The most visible consequence of eutrophication is proliferation of algae
The undesirable overgrowth of vegetation caused by high concentrates of plant nutrients in bodies of water
the increase in the nutrient levels of a lake or other body of water; this usually causes an increase in the growth of aquatic animal and plant life
The process of surface water nutrient enrichment causing a water body to fill with aquatic plants and algae
The process of fertilization that causes high productivity and biomass in an aquatic ecosystem Eutrophication can be a natural process or it can be a cultural process accelerated by an increase of nutrient loading to a lake by human activity
Characteristic of waters rich in dissolved inorganic or mineral nutrient materials and exhibiting a paucity or complete lack of oxygen in the bottom waters as a consequence of high primary production and the high nutrient content
Having a large or excessive supply or plant nutrients, nitrates and phosphates, usually resulting in an increase in biomass and productivity, (see oligotrophic)
being rich in nutrients and minerals and therefore having an excessive growth of algae and thus a diminished oxygen content to the detriment of other organisms
a situation in which the increased availability of nutrients such as nitrate and phosphate stimulates the growth of plants such that the oxygen content is depleted and carbon sequestered
a (Gr ew, well; trophe, nourishment) the gradual increase in nutrients in a body of water Natural eutrophication is a gradual process, but human activities may greatly accelerate the process
Having concentrations of nutrients optimal, or nearly so, for plant, animal, or microbial growth (Said of nutrient or soil solutions and bodies of water ) The term literally means "self-feeding "
one of the four trophic state categories, the eutrophic state is defined as having a high level of biological productivity, second only to the hypereutrophic category The prefix "eu" means good or sufficient A eutrophic waterbody is capable of producing and supporting an abundance of living organisms (plants, fish, and wildlife)
the condition of water being rich in plant nutrients (Cole, 1994) Nutrient-enrichment causes biological productivity to increase, but biodiversity within the aquatic ecosystem to decrease In turn, eutrophic waters are also anaerobic (deprived of dissolved oxygen) Water is usually considered to be eutrophic if phosphorus loading exceeds 20mg/L
used to describe highly productive or enriched lakes and estuaries; generally lack diversity of species and have over abundance of algae or rooted plants and tolerant fish species, low dissolved oxygen levels, and high accumulation of soft bottom sediments
Having high concentrations of nutrients optimal, or nearly so, for plant or animal growth Can be applied to nutrient or soil solutions and bodies of water