Term
| • What is a trophic state of a water body, and what factors influence this state? |
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Definition
…? Factors influencing are P, Chlorophyll, and turbidity.
Temperature, pH, sediment load, dissolved oxygen, nutrients, metals
Oligotrophic: Blue
Eutrophic: Green
Mesotrophic: In between. |
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Term
| • What factors affect the temperature of a water body? |
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Definition
| Water upstream, ground water vs. surface run off. |
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Term
| • What factors affect the pH of a water body? |
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Definition
| Acids and bases. Inputs and by alkalinity and acid neutralizing capacity. |
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Term
| • What factors affect the dissolved oxygen of a water body? |
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Definition
| Affected by temperature, altitude, turbulence, and partial pressure in the dissolved phase (autotrophs). Oxygenating bodies increases degradation of organic matter load and can be applied as a restoration technique. |
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Term
| • How can high sediment load impair water quality? |
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Definition
| It delivers nutrients and toxins, shade water columns, fills pore space, water temperature, habitat…? |
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Term
| • Which two elements are “nutrients”, and what are sources of these nutrients to water bodies? |
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Definition
| Nitrogen and Phosphorous – most commonly limit growth of aquatic plants and algae. Sources: Natural fixation, fertilized, fossil fuel combustion. |
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Term
| • Define eutrophication, and list some of its harmful consequences. |
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Definition
| Process where water bodies receive excess nutrients that stimulate excessive plant growth. Negative effects can include hypoxia (depletion of oxygen in the water… can result in reductions in fish and other animal populations). Excessive algae, their death results in depletion of oxygen in water. |
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