Lower water tempertures, larger amounts of turbulence, shallower water, and increased photosynthetic activity by plants all contribute to an increase in DO levels. Higher temperatures, slower moving or deeper water, and increased rates of decomposition all contribute to lower DO levels. High dissolved oxygen levels supports greater diversity of organisms in aquatic systems. We use LaMotte's snap off DO viles and CBL's equipped with Vernier DO probes . Both methods of collection are very easy to use and provide accurate enough readings for establishing a baseline needed for comparison purposes.
Students testing for DO levels also record the water temperature and rate of flow.
In those circumstances when deep pools are studied, the depth at which the sample is taken would also be recorded. All Rights Reserved. Reproduction in whole or in part in any form or medium without express written permission of Amador Valley is prohibited.