| oxygen demand |
the need for molecular oxygen to meet the needs of biological and chemical processes in water. Even though very little oxygen will dissolve in water, it is extremely important in biological and chemical processes.
출처: mvhs1.mbhs.edu/riverweb/glossary.html
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| oxygen demand |
the organisms that break down organic matter (like leaf litter or animal wastes) consume, or "demand," oxygen during this process. When the decomposition process happens in a watercourse, the oxygen is consumed from the surrounding water. If there is too much organic matter in a watercourse and the oxygen demand is too high, there may not be enough dissolved oxygen for other aquatic organisms like fish to survive.
출처: www-heb.pac.dfo-mpo.gc.ca/water_quality/fish_and_p...
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