Investigating Water Quality How do excess nutrients affect dissolved oxygen levels & impact water quality?
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Dissolved oxygen is molecular oxygen freely available in water and necessary for the respiration of aquatic life and the oxidation of organic material.
Nutrients are elements or compounds essential to life, including but not limited to oxygen, carbon, nitrogen, and phosphorus.
Nutrients are supposed to be good but too much of anything is a problem especially when aquatic plants & microorganisms take over.
Phosphorus cycles through the environment, changing form as it does so (Fig. 5.12). Aquatic plants take in dissolved inorganic phosphorus and convert it to organic phosphorus as it becomes part of their tissues. Animals get the organic phosphorus they need by eating either aquatic plants, other animals, or decomposing plant and animal material.
Environmental Protection Agency http://omp.gso.uri.edu/ompweb/doee/science/physical/choxy2.htm
What is the relationship between water temperature and dissolved oxygen?WA Department of Ecology 2008-2009 Water Quality Testing Data Phosphorus, Nitrogen & Dissolved Oxygen
61A070 - Columbia R @ Northport60A070 - Kettle R nr Barstow53A070 - Columbia River @ Grand Coulee53C070 - Hawk Creek @ Miles-Creston Rd.Hawk Creek 2008 -2009 WQ DataHawk Creek 2008 -2009 WQ DataHawk Creek 2008 -2009 WQ DataHawk Creek 2008 -2009 WQ Data
Do the data show patterns or local circumstances?
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