These pollutants have reduced water quality, contaminated soils, and damaged the Lake’s ecosystems. Pollution in wildlife has caused fish consumption to decrease, the spread of disease and viruses to increase, loss of fish and other wildlife stock. The closing of beaches and other recreational activities have been another direct result of the
2. Do background research – Utilizing at least one scholarly source, describe how variations in dissolved oxygen content in a body of water can affect fish populations. Answer = “Oxygen depletions are the most common cause of fish kills in ponds. (Aquaplant, 2014).” Based on my observation of the chart and what I read, the higher the dissolved oxygen levels the number of fish drops. Dissolved oxygen levels can also cause fish to suffocate and be more susceptible to diseases.
With the vessels having foreign aquatic life attached to the bottom of the ship and also leaking fluids into the lake while passing through. Also for these sources of pollution cause beach closing and a decrease in aquatic
Retrieved from http://www.earthregenerative.org/gaiamethods/ecophilosophy.html environmental science. (n.d.). Dictionary.com Unabridged. Retrieved July 20, 2015, from Dictionary.com website: http://dictionary.reference.com/browse/environmental science genetically modified organism. (n.d.).
Prof: M K L P SCI204: Environmental Science DeVry University Date: 04/03/2014 Exercise: 1 Discuss two sources of pollution that have affected Lake Erie. Lake Erie has exhibited a high level of plastic pollution and algae blooms related to chemical pollution. This is all a direct result of human activity along the water ways leading to the lake as well as along the shoreline of the lake itself. One article pointed to plastics from a variety of things including food wrappers, toys and disposable drink bottles making their way to the lake via sewer lines and other sources. Another item pointed to pesticides, fertilizers and road salt as additional contributors to the pollution problem.
In other cases, the algae blooms from eutrophication turn out to be incredibly toxic species (National Academy of Sciences 696). One particularly nasty algae is Pfiesteria piscicida which emits toxins that break down the skin of fish, causing bleeding and sores and ending in mass fish death (Howarth 39). In August 2005, a dairy farm in Western New York experienced a manure lagoon collapse, which resulted in 3 million gallons of manure funneling into the nearby Black River, where it killed as many as 250,000 fish, brought all recreation to a halt, and forced the city of
This would be terrible for the people and creatures that rely on this mighty river to live. Dams, diversions and evaporation losses from reservoirs also contribute to the lessening of water available from the river, causing ecological consequences to wildlife living in and along the river. The Colorado River used to carry up to 85 to 100 million tons of silt or sediment to the Gulf of California where it deposited into the sea. The sediment helped things along the river path grow and flourish. Over the years, the silt has been collecting in Lake Mead, the nation’s largest reservoir, and it is predicted that over the next few hundred years this lake will fill up with silt.
Dead Zones occur when dissolved oxygen levels in the water get so depleted the water cannot support life. When the depletion of oxygen occurs, marine life either dies or has to leave the area. Nitrates from fertilizers and other pollutants
Science of Total Environment, 15 Sept. 2011. Web. 10 Feb. 2012. Schmidt, Charles W. "Residential Drilling." National Center for Biotechnology Information.
The effects of human development have polluted the waterways of the state as well, making it difficult for native fish to survive long enough to breed. Pictured at the end of the document is a model of the food chain in the rivers and lakes of