Eutrophication is the increase in the rate of supply of organic matter to an ecosystem. hi i was just reading your post and you suggest that removing piscivorous can reduce turbidity of freshwater systems. Evaluation of environmental impacts for saffron agroecosystems of Khorasan based on nitrogen fertilizer by using Life Cycle Assessment (LCA). Cultural eutrophication is harmful, but it can be reversed if the nutrients come from easily identified point sources such as sewage treatment plants or septic systems. First, you have to determine which of the sources make the biggest input of nutrients (NPK) to the lake (streams or surrounding lands). Eutrophication can partly or fully be reversed by reducing nutrient loads. Can the eutrophication and associated impacts be reversed? Students should research (in-depth) and write an essay about one way by which eutrophication can be prevented or (possibly) reversed. Nonpoint source pollution, or diffuse pollution, derives from urban and rural land uses, ranging from lawns and golf courses to agricultural fields. Eutrophication is the process of enrichment of waters with excess plant nutrients, primarily phosphorus and nitrogen, which leads to enhanced growth of algae, periphyton, or macrophytes. It is caused by the change in form and depth of the basin as it gradually fills in with sediment. Blue-green algae release toxins and are not readily ingested by secondary consumers. mainly the large estuarine systems as well asdeveloping countries with no or hardly any waste water treatment. It occurs when high levels of nutrients – often phosphates or nitrates – are introduced into the aquatic environment. Removal of piscivorous fish can be extremely important in lake recovery if these fish prey on smaller fish that then eat the phytoplankton of algal blooms.However, if these smaller fish in fact prey on the zooplankton (which in turn eat the phytoplankton), then increasing the number of larger fish which prey on these could aid recovery as you say.As I said, it very much depends on the specifics of the system in which the experiment is carried out - another reason why system recovery following eutrophication is extremely difficult and resource-intensive.Thanks for the comment,Harriet. Sims, in Encyclopedia of Soils in the Environment, 2005. Eutrophication is the increase in the rate of supply of organic matter to an ecosystem. However, the European Environment Agency’s (EEA) assessment, published today, shows that eutrophication still remains a large scale problem in some of Europe’s regionals seas. In lakes, the key symptom of eutrophication is cyanobacterial blooms (see figure, left). however could leaving the piscivorous fish in the water, or in fact increasing their population size also help reduce the impacts of eutrophication? Harmful algal blooms, dead zones, and fish kills are the results of a process called eutrophication — which occurs when the environment becomes enriched with nutrients, increasing the amount of plant and algae growth to estuaries and coastal waters. - Step by step eutrophication process - Effects on water quality, treatment costs, compliance and ... – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 3c5d13-YTJiM The shared vision for Europe’s seas is a healthy marine environment where human-induced eutrophication is minimised. Reversal, however, may require a long time and thus, several methods have been elaborated that aim at enhancing oligotrophication by manipulating biotic interactions within the aquatic ecosystem. ). Increasing nutrients in shallow marine systems can shift aquatic plant communities from sea-grass beds that provide valuable habitats for marine organisms to nuisance macroalgae that cover the sediment with mats of rotting biomass. the Baltic Sea. Occasionally this is due to an insufficient reduction in nutrient levels, i.e. Future research should encompass a more fundamental and holistic view of eutrophication, considering altogether the multitude of environmental changes encountered in eutrophied sites. Smith, in Encyclopedia of Inland Waters, 2009.