After spending the first week of this course at the
University of North Florida I have become even more excited to see what this
course has in store for me. Each day I learned a new skill, such as on the
first day in the St. Johns River we listened for anthropogenic and biological
sounds using a hydrophone, now I know exactly how to identify what a snapping
shrimp sounds like underwater. I also learned how to use a turbidity tube to
test for water clarity, and a Van Dorn sampler to take a sample of water back
to the lab to test its chlorophyll A levels. Although I already knew how to do
YSI readings it was nice to have the chance to practice.
On the
second day I learned how certain organisms survive in specific environments,
such as the Coquina clam and how it burrows under the sand to avoid high-energy
wave action and heat. We also went out to Summer Haven and saw the effects that
dredging has on the environment and shore birds. We also visited a natural and
a maintained inlet and learned how to identify the difference between them. It
was really cool to see how the Jetties affected the shoreline and how humans further
impacted the shoreline by putting the jetties in their place.
On the
third day, my favorite day, we were out on the boat longline fishing for sharks
so that we could tag, fin clip, blood sample, and measure them. We caught a
small scalloped hammerhead shark and clipped its fin but because it was so
small we needed to return it back to the river as soon as possible. That was
the first time I’d ever seen a shark in person so it was super exciting. We
also seined in the afternoon when the tide was high and because of that we
caught a lot of fish, such as anchovies and herring. We counted out the
different types of fish based on their species and then returned them back to
the river when we were done.
On the
fourth day we went to a salt marsh and learned how to calculate percent coverage
within a subplot. We also measured the mangroves width, height, diameter of the
trunk, and the canopy coverage. It was really cool to learn about black
mangroves because last year I studied a lot about red mangroves while in the
Bahamas so I had the chance to compare the two to see what makes them similar
and different. After this week alone I’ve already learned so many new useful
skills and I can’t wait to learn more during the rest of this course!
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