These typically promote excessive growth of algae. As the algae die and decompose, high levels of organic matter and the decomposing organisms deplete the water available oxygen, cause the death of other organisms, such as fish. Eutrophication is a natu... ... middle of paper ... ...to the MARB, primarily from the application of agricultural fertilizers. Agriculture has caused an increase in the flow of nutrients from chemical fertilizers into bodies of water. The excess nutrients change the chemical composition of the water, impacting biological life forms in the affected areas.
Eutrophication is the over-enrichment of nutrients in a body of water, due to runoff from the land, which causes a condensed growth of plant life. This occurrence also causes death of animal life from lack of oxygen (Oxford Dictionary, 2016). The nutrients that become overly abundant are nitrogen phosphorus which causes problems in most natural environments. The problems caused by this nutrient are hypoxia and harmful algae blooms. Hypoxia is the depletion of oxygen.
Occasionally, the decomposition of newly-submerged biomass and sediment further reduce the water's oxygen content. Water sources can literally choke to death as a result of increasing human activity, such as industry and agriculture giving rise to increased nutrient loading. I am particularly surprised how the agricultural industry inflicts these problems on themselves, by excessive use of sewage systems and pollutants which find their way to local rivers [Fig 1.]. The trophic state (i.e. the natural nutrition factors) and biodiversity of lakes and rivers are greatly effected by the main nutrients involved, nitrates and phosphates.
Nutrients pollution; it’s when some waste water effect the levels of nutrients and increase it which make the water bodies have more algae and weed and this make those clean water polluted and undrinkable. If the water have too much algae this will use up all the oxygen within the water, and then this will lead for organism to die because starvation of the lack of finding oxygen. 2. Surface water pollution; includes natural water that found on earth surface such as lakes, oceans, rivers, lagoons. The natural surface water get polluted by hazard substance that comes from dissolving or mixed physical and then become from good to be drinker to surface water polluted.
Run-off of nutrients from agricultural land can flow/leach into bodies of water e.g. the Norfolk broads, Also sewage sludge and waste solvents from industrial plants are frequently poorly disposed of and may flow into lakes (Anderson,2003). An increase in impermeable surfaces e.g. roads & concrete has lead to an increase in run-off (EPA,2003). Acid rain is caused by emissions of nitrogen and sulphur oxides which are supplied by the combustion of fossil fuels in power stations, the use of fertilizers and the exhaust fumes of vehicles (Beig,2004).
Bodies of water with high levels of phosphates usually have high biological oxygen demand (BOD) levels due to the bacteria consuming the organic plant waste and subsequent low dissolved oxygen levels(Hooper,1998). The addition of large quantities of phosphates to waterways accelerates algae and plant growth in natural waters (Hooper), enhancing eutrophication and depleting the water body of oxygen. This can lead to fish kills and the degradation of habitat with loss Boyington 5 of species. Large mats of algae can form and in severe cases can completely cover small lakes. Dying plants and algae will create phosphates while decaying, as a result, water can become putrid from decaying organic matter (World Book Encyclopedia).
This is due to the excessive accumulation of nutrients at a much faster speed caused by human error. Cultural eutrophication happens when surface run-off, that contains nitrates and phosphates, moves from one place to another, ending up in a river or lake. Unfortunately, there are times when these nutrients end up being leached into the groundwater. At times eutrophication may be severe enough that it causes the oxygen in these water bodies to become quite low. The results of this is seen in the harmful effect it has on aquatic wildlife, creating what is referred to as dead zones.
2005). The finding suggests that nutrient loading does have detrimental effects on natural pathways of ecosystems. Increasing nitrogen and other chemicals results in eutrophication, and affects the biogeochemistry and ecological community by causing an increase in some harmful species like phytoplankton and algae and decreasing the level of dissolved oxygen. Other important species
On top of the habitat being depleated, overfishing and diseases are also hurting the bays species. Nutrient loads can be reduced with the help of lawmakers to put a cap on the emissions allowed in the environment. If this is done the dead zone will start to recede, but the time and money need to be spent in order to save the bay. Works Cited Baker, William C., and Tom Horton. "Runoff and the Chesapeake Bay."
When there is an excessive richness of nutrients in a body of water, algae feeds off of these nutrients and creates an algal bloom. Algal blooms are harmful because when they die, a lot of oxygen is used to decompose the remains. This causes hypoxia and sometimes, in severe cases, anoxia. This is bad for the environment because it can destroy aquatic life in affected areas. Fish is one type of sea life that is severely affected by eutrophication.