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Name: Rachel
Status: Student
Grade: 9-12
Location: DE
Country: United States
Date: September 2006


Question:
What is the significance of testing the dissolved oxygen level in a body of water?



Replies:
Rachel,

Since many organisms rely on oxygen in order to live, testing the amount of oxygen in a body of water can indicate the viability of that body of water for life. We don't yet fully understand what controls the variations of oxygen content of bodies of water (why some parts have high or low oxygen content), measurement is an important step in gathering data so we can build models as to why there are variations.

There was a recent report of a study of a body of water off the coast of Oregon. This part of the ocean surprisingly has very low oxygen content and the ocean floor is littered with dead crabs. An internet search should get you more information on this very curious phenomenon.

Greg (Roberto Gregorius)



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