Eutrophication is derived from the Greek word ‘eutrophos’ that means well-nourished or enriched Eutrophication is the excessive presence of nutrients like nitrate and phosphate in a lake or other water bodies, which causes a dense growth of plant life. Step 4: Algae Dies And Is Decomposed By Bacteria Step 5: Decomposition Of Algae Increases Biological Oxygen Eutrophication is the natural aging process of aquatic ecosystems, historically used in reference to the natural aging of lakes. eutrophication Has Greek Roots Causes of Eutrophication Eutrophic events have increased because of the rapid rise in intensive agricultural practices, industrial activities, and population growth. Eutrophication can have serious, long-term effects. It is considered to be the main responsible for the eutrophication process. Instead of developing over centuries, eutrophication is now developing over decades. Etymologically, the word eutrophication means “well nourished”. Nitrate fertilizers which drain from the fields, nutrients from animal wastes and human … However, this is a natural course and flow of nutrient and it is a very slow process. The cultural eutrophication process consists of a continuous increase in the contribution of nutrients, mainly nitrogen and phosphorus (organic load) until it exceeds the capacity of the water body (i.e. Anthropogenic Eutrophication. Eutrophication is the process by which excess nutrients enter aquatic ecosystems, causing increased productivity. Eutrophication. Steps of Eutrophication Step 6: Fish And Other Aquatic Life Forms Die Nathan Daniel Without oxygen in the water, certain aquatic life forms (including fish) cannot survive. Eutrophication can even occur naturally, over thousands of years when the lakes grow old and they contain too many sediments. It will happen no matter what people do. This is caused by human activity, this problem became apparent once the green revolution and industrial revolution began in the last century. It's been happening since the beginning of time. This increase leads to a subsequent increase in the biomass of these plants that have to degrade at the end of their lifecycles. Here, this means that the lake models are rather complex and that each included process should correspond to one well defined (and measurable) process … When these die, they decay: a process which rapidly removes oxygen from the water [1]. 2 words related to eutrophication: biological process, organic process. However, humans in their everyday activities can exacerbate the process: Point sources (can locate the cause) • Sewage treatment plant discharges • Storm sewer discharges • Industrial discharges Non-point sources (can’t locate the cause, it’s everywhere) • Atmospheric deposition What happens when fertilisers get washed into lakes and rivers? to strengthen the mechanistic foundation in predictive lake eutrophication models, hoping to improve the ability to make quantitative predictions. for farms/crops) are washed into a pond/ lake by rainwater.2. Cultural eutrophication is when a flux of excess nutrients from human activity are added into a local run-off which in turns speeds up the natural eutrophication. Knowledge application - use your knowledge to answer questions about the process of eutrophication Additional Learning. Eutrophication is a process in which a body of water changes with time as deposits of nutrients and sediments (particles of sand, silt, and clay) from the surrounding area accumulate. During this process oligotrophic lake is con­verted into an eutrophic lake. A process of pollution that occurs when a lake or stream becomes over-rich in plant nutrient; as a consequence it becomes overgrown in algae and other aquatic plants. The clearing of land accelerated land runoff and more nutrients such as phosphates and nitrate are supplied to lakes and rivers, followed by coastal estuaries and bays. ; Eutrophication can be caused by point sources and non-point pollution sources.. A point source is an easily identifiable source from which nutrients are added directly to the environment. The plants die and decompose. Leaching from the excessive use of fertilisers causes a nutrient build up in neighbouring rivers or lakes. Natural eutrophication is supposed to develop over centuries of time. 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