The charts below depict the 2018 data collected by Boothbay Region Land Trust volunteers from May 15, 2018 to Sept 15, 2018. While this post does not reflect analysis of the data below, it is interesting to note the trends and relationships. The first three charts show the values collected at each site. It is interesting to note the differences in values between sites such as the lower salinity at sites 3 and 4, the higher pH at site 8, and the lower DO at sites 1, 7 and 9.
The remaining five charts compare one variable against another. The water temperature compared against date reflects the summertime rise in water temperature. Though this is not a surprise, it provides validation of the data collected. Comparing “Water Temp vs Date” and “DO vs Date”, we see a decrease in dissolved oxygen levels as the summer goes on which is also expected (warmer water holds less oxygen) which is also reflected in the DO vs Water Temp chart. The last chart, pH vs Date, possibly reflects the impact of rainfall in the days prior to the collection date (0.1 to 0.60″ across the area on 7/23/2018 and 0.1 to 0.55″ on 8/5/2018).
These data have been provided to scientists at the National Oceanographic and Atmospheric Agency (NOAA) and the University of Maine at their request for inclusion in large scale ocean acidification studies.