Tag Archives: coconut

2022

today powered by coconut

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Today was a big day. I know you were all waiting in suspense after the cliff-hanger ending to yesterday’s blog post. Well, wait no more.

We started out the day by practicing using out quadrats (which are actually 2×2 feet-oops!). We had to come up with a scientific question that we could answer by using the quadrat. Sophia and I chose to ask what percentage of the sand is occupied by live foliage. We laid out 30 feet of transect tape, then placed the quadrat on either side every five feet, and counted the number of squares that contained a live plant. The answer we came up with was 22.7%.

The next step was to figure out a scientific question that we could answer with the quadrat in the reef, collect data, and present our findings to the professors. You can read all about it below!

Also, I must note that throughout our scientific process we were being supplied fresh coconut by the kids. #sponsored

After that, we went on a walk to the coral graveyard-Professor Correa’s favorite place in the world! It looked like a beach full of gray rocks, but upon further inspection, it turned out to be fossilized corals! We were able to identify the corals based on the shape of the calyxes (the little spot that the coral polyp inhabits). In live coral, the skeleton is covered by the tissue, so in these fossils, we could easily see the identifying markers. Some of the fossils belonged to corals that have been nearly wiped out by disease and are rarely seen in nature, so the coral graveyard was truly a special place.

I also saw some sargassum that had washed up on the shore of the coral graveyard. I think it was sargassum natans VIII, but it was hard to tell because most of it was dead. There were also some floating sargassum patches out at sea, which was cool because there aren’t any that I have seen within the lagoon.

We then came back to watch the presentations for the night. I delivered mine on nutrient pollution, overfishing, and the future of the coral reefs.

And that was it! Tomorrow we are looking to go further out via boat to see new reefs, weather allowing of course. Stay tuned!

-Elena

ps. happy graduation to my brother! (although I doubt he’s reading this)

2022

Quadrats + Coral Graveyard

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I felt like such a tropical field biologist today (with training wheels of course). We started off the day with a land activity using transects and the quadrats that we made yesterday. Liliana and I got some practice using the gear and with the methodology by gathering data to characterize what percentage of the measured area had evidence of hermit crab movement through the sand. Here is a photo! (The square is the quadrat, the line is the transect, and the orange rectangle is a very fancy dive clipboard)

Then, all of the TFBs put our heads together and came up with a question to test with this procedure out in the seagrass beds. We chose to investigate how the density of penicillus (a green algae) changes with the distance from the shore. We decided on a uniform methodology and got to work! I saw a lot of warty corallimorphs and great Caribbean sea anemones in the seagrass beds! After we collected our data in the water, we came back to the wet lab and compiled our data. We all made a poster that reflected the entire experiment, including results, discussion, and figures (one of which is a taped-on penicillus in a quadrat heart).

While working in the wet lab, I ate some freshly husked coconut as a snack!

Later in the day, we went to what Adrienne called the “coral graveyard,” and which she also described as “the most amazing place on the planet.” It really was amazing! The field of coral skeleton rubble was extremely well-preserved, and we were able to identify a lot of the species! One thing that I was particularly excited about was seeing and correctly identifying Montastraea cavernosa fragments. I took Adrienne’s coral reef ecosystems class, and my semester-long research proposal centered around this coral. It was so gratifying to get to hold a piece of its skeleton framework!

Besides the few sightings I got in during our penicillus data collection, I didn’t have a lot of time or opportunities to focus on my taxonomic group today. However, I am now so much better at recognizing great Caribbean anemones and warty corallimorphs!

Although my collection of mosquito bites has grown to be rather impressive, I can’t wait to get more if that means I can have more days like this!

– McKenna