This week has opened my eyes to the open ocean. Although
stuff had to be moved around because of Colin, everything still worked out
well. The first day was filled with some background lecturing about the open
ocean and the diversity it holds. This day was a lot of lecturing but all
necessary. The second day we discussed what we will be doing on cruise and how
to best prepare for it. Then after this discussion we had guest speaker Dr.
Radabaugh come to talk to us about her Ph.D thesis work. In very brief summary,
she discussed how she studied the carbon and nitrogen stable isotopes in
different levels of the food web to develop where the basal resources fit into
the food web. With this background information the different trophic levels of
species in that habitat can be discovered. This can then be applied to discover
migration patterns of different species. This was all very interesting how
something as small as the amount of different carbon and nitrogen isotopes in
the different layers of an eyeball or vertebrae can be used to track the
migration patterns of a species. After Dr. Radabaugh’s talk, we ventured to
Tampa to observe the different species a water droplet would discover along its
path from wetlands to the open ocean. The Florida Aquarium had amazing exhibits
of various different species. While there, we were tasked with filling out
ethograms of a wetland bird and coral reef species. This lead to many questions
from other bystanders in the aquarium asking what I was doing. Wednesday of
this week marked D day for this week. This was the day we left on our 13 hour
cruise to do water quality, plankton, otter trawl, and capetown dredging
samples both in the open ocean and nearshore. This day was filled with tons of excitement
and challenges. The major challenge during this trip was trying to identify all
the species that were pulled up but this was also very exciting. This cruise
gave us all great experience in the field and expanded our knowledge of species
identification, along with also allowing us to see a lot of amazing different
species. The day after the cruise we all came back to the classroom to view the
plankton under microscopes. This task was mostly just looking at the plankton
that is found in the different places and identifying the ones that could be
identified. Then Dr. Perrault came in to talk about his research on Leatherback
Sea Turtles. He talked to us about the mercury and selenium in turtle
populations. It was quite interesting learning how selenium can basically cancel
out the mercury in the turtles but then too much selenium can be bad as well.
Also adult turtles pass on mercury levels to their offspring and can in some
instances be deadly. This talk was very interesting as well and Dr. Perrault
showed us some very interesting things. The last bit of Thursday and all of
Friday was data analysis. Each group picked a question and used the data from
our trip along with previous trips to answer the question. Then with this new
data a minimal presentation was presented and the week was completed. On to UWF
next week!
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