Document Type

Conference Proceeding

Publication Date

4-2022

Abstract

San Antonio Texas gives home to the San Antonio River which is typically fed by its headwater otherwise known as the Blue Hole. In this research, we studied the influence of photosynthesis on the cycling of carbon in the San Antonio River. We collected water samples from the river over a 24-hour cycle from Brackenridge Park to a point just outside downtown, San Antonio. The pH increases during the day and falls and night; the alkalinity reduces during the day and increases at night, and the dissolved oxygen (DO) showed increases during the day and falls at night. The behavior of the pH, alkalinity, and DO, is due to photosynthetic processes where dissolved carbon-dioxide (CO2) is removed from the water during the day and added at night, and DO is added to the water during the day and removed at night.

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