Effects Of Eutrophication On Natural And Cultural Environment

1654 Words May 8th, 2016 7 Pages
Eutrophication is the process which causes ecosystems such as lakes and rivers to increase in fertility due to a higher level of nutrients entering the lake or marine environment (Mayhew, 2015). This results in a growth of plants such as algae. As these algae plants die, aerobic and anaerobic bacteria cause decay, therefore use up the oxygen within the marine environment (Credo, 2015). Eutrophication has significant impacts on water quality of rivers and lakes within the Waikato region. Although many of these waterways in the Waikato Region are improving due to mitigation efforts, some, including Lake Rotorua are continuing to decline despite these efforts. Therefore, this has many negatives effects on the natural and cultural environment. Eutrophication has largely impacted the water quality in Lake Rotorua over the last 50 years (Morgenstern et al., 2015), therefore is of urgent concern due to several environmental, social and cultural reasons.
This issue of a declining water quality due to eutrophication is due to mostly human activities of rural, urban and geothermal reasons in Rotorua (Hautier et al., 2009). Each of these impacts on the water quality of Lake Rotorua through pollution of nutrients and therefore causing the process of eutrophication. Rural land uses have significant impacts on eutrophication which leads to a decrease in water quality (AgResearch, 2014), with approximately 74% of nitrogen and 43% of phosphorus sources within Lake Rotorua come from…

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