The tasks laid out for
us today were very similar to yesterday.
We needed to go to another reef to prepare more ledges for Tye’s basslet
competition experiment. The reef we
worked on today is paired with the reef we went to yesterday as the high
lionfish density reef. This experiment
we have been working on will look at basslet competition between the two
species (fairy and black cap pictured in an earlier post) at low and high
densities of lionfish. To make this
possible, we must use isolated reef pairs (1 high density and 1 low density) to
understand how the presence of lionfish alters the competitive interactions
between the two basslet species. My job
today once again was to remove the fairy basslets from Tye’s black cap only
ledge. I started to get noticeably better
at capturing the darting fairy basslets over the course of our 3 dives
today. By the end of the 3rd
dive, I felt pretty good about my fish drugging abilities. This increased productivity however was
partially negated due to the presence of lionfish near the ledge. Every time I would duck under the ledge, I
would have to keep an eye out for lionfish to make sure I would not get
stung. Even though they don’t actively
attack, they can sting if they are accidentally touched. At one point, there were 3 lionfish near the
ledge I was working at and I had to poke them away with my net a number of
times to get them out of the way. They
are certainly persistent animals as I have found out first hand. In the next couple of dive days, I plan to
take some pictures and videos of this operation to post on the blog.
After we finished up, we
came back to CEI and released the little basslets under the dock. Some of them may have been gulped up by
snapper or small groupers soon after they were released but for us, we don’t
feel too bad doing this because there is certainly no shortage of fairy
basslets. They are one of the more
abundant fish on the reefs we survey so our removals are not affecting the
population as a whole significantly. After
a long day of work, it was nice knowing I have tomorrow off to relax and
recover. The first 5 days of diving have
been a bit taxing on me in part because of the number of dives. You definitely get exhausted after diving
that often due to your increased metabolism underwater. When you factor in that most of our dives
have been between 40 to 60 ft of depth, the level of exhaustion is magnified
due to these greater depths. I felt no
reservations about staying up later to watch the Kings game knowing that I
could sleep in tomorrow. It was awesome
to see the Kings pull off the series against the Blackhawks. I was on the edge of my seat the entire game
despite being dead tired. Now I am going
to try to calm myself down for a good night sleep. Until later
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