On Monday, we set
sail down the St. Johns River. We started at the Mayport Marina and
traveled up the St. Johns River until we reach an area of low
salinity (around 4 ppt). Here, we started taking water quality
measurements and continued to do so at intervals down the river until
we ended at the Marina. We saw a gradual change in salinity,
dissolved oxygen, and chlorophyll-a as we transitioned from fresher
water to the ocean.
Tuesday was the day
for the 24-hour survey. We got to the site around 10:30 AM and got
ready for our first sampling at 11:30 AM. Every three hours, teams
did a seining of the Guana lake and river. On every hour, each site
was tested for water quality. Though this was exhausting, it was
quite the experience. I found that blue crabs likely have the worst
attitude out the whole animal kingdom. I got pinched three times
before I decided perhaps someone else should handle them. When
Wednesday morning rolled around, we were able to pack up and do our
final sampling at 10:30 AM. We got back and wrapped up the data
collection and divided up the workload on making different graphs to
analyze the data we collected.
On Thursday, we
drove around and looked at different beaches when compared to the
surrounding amount of development. I had no idea how powerful of a
force the movement of water really is. Humans have been trying to
restrict and control this force, but in many cases, they were
unsuccessful. We saw multiple instances where the water is taking
back different areas. The saw where A1A used to be, a boating marina
that was all dried up, and various areas where erosion is threatening
many residential sites.
Friday was our last
day of this trip. We reviewed and took our test and then said our
goodbyes. It was an amazing experience and I met some amazing people!
I hope everyone is able to reach their different goals! Perhaps
we'll even see each other around.
Devin out.
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