Thursday, February 19, 2015

Marine Adventures

The following blog post was written by a 2014 National Science Foundation (NSF) funded Research Experience for Undergraduates (REU) student following their internship at BIOS.

Hello! My name is Chloe Emerson and I am a senior at Wellesley college studying Biology and Philosophy. This fall I have been participating in the NSF-REU program at BIOS researching tissue regeneration in the variegated sea urchin, Lytechinus variegatus, with Dr. Andrea Bodnar and Dr. Helena Reinardy.

A sea urchin with extended tube feet

I'm investigating the role of the Notch signaling pathway in regeneration by inhibiting Notch. My project has presented many wonderful opportunities for improving my laboratory skills and learning new molecular techniques including RNA extractions, cDNA synthesis, and quantitative PCR.

Performing RNA extractions on sea urchin tube feet.
In addition to working in the lab, I've also had a chance to explore Bermuda with the other REU students. Our adventures have included trips to the beach and snorkeling adventures at the nearby Whalebone Bay.

Exploring Horseshoe Bay with Gabe.

Snorkeling with Mia at Whalebone Bay.

Turtle Bay with the REUs.

My experience in Bermuda this fall has been incredible on both personal and professional levels. I learned an incredible amount throughout the course of my research project and met a group of really amazing people. I'm so thankful to have had this experience and hope to return to BIOS in the future.

Warwick Long Bay Beach

Thursday, February 12, 2015

Beneath The Surface

The following blog post was written by a 2014 National Science Foundation (NSF) funded Research Experience for Undergraduates (REU) student following their internship at BIOS.

Hello from Bermuda!

My name is Mia Thomas and I am a junior at St. Lawrence University studying chemistry and environmental studies. I am currently working in the Coral Reef lab with my mentor Dr. Samantha de Putron on the project, “The effect of environmental variables on spat growth and zooxanthellae density of juvenile coral.”  I am looking at how temperature, light, feeding and larval size affect growth rates of juveniles of the coral Porites astreoides in experimental tanks by measuring images of the corals taken every four weeks. I am also quantifying zooxanthellae density, an algal symbiont that lives within the coral, to further understand factors that affect this vital symbiosis and the relationship between zooxanthellae density and the coral’s growth. 

Along with my research I have been taking the AAUS Research Diving Methods course to become a scientific diver. I attend weekly classes, take an extensive final exam, and have to complete 12 scientific dives for my certification. My final and favorite scientific dive of the semester was assisting Tim Noyes in coral coring! 

This is an photo of me at the dive site where the samples were taken, about 8 miles off the shore of Bermuda.
It was a beautiful mid-November day and the water was luckily quite warm. The PhD student Sara was well prepared and the sampling went smoothly.
Sara, the PhD student
One of many things I love about about BIOS is meeting visiting scientists. They are all interested and passionate about such different aspects of marine science. Sara is looking at the pH within the coral and how it compares to the ambient sea water. Using these cores she will be able to essentially make an equation that will be able to determine what the pH of the seawater was when the coral colony first settled (maybe 100+ years ago!).

Diploria labyrinthiformis
First we had to identify an adult colony that was large enough to core, close to the buoy, and of the correct species, Diploria labyrinthiformis. Photos were used to document the site so that in a year she can return and check on the health of the colony. This was one of the agreements with the Bermudian Government in order to sample the coral.

Dive slate indicating the coring sample
A dive slate was used to help keep track of each core sample. The top line is the date, the second line is the scientific name abbreviation, "core" for coral coring, "3" is indicating that this is the the third coral colony sampled, and "A" is the first core in that colony (two were taken of each coral).

Tim using the drill to core the coral
The coring drill was attached to a SCUBA cylinder, which made it very easy to maneuver under water. The tank had to be changed out after every core sample because the drill used so much air. It was honestly the coolest thing ever watching Tim drill because of all of the coral dust and bubbles going everywhere!

A finished coral core

Learning how to conduct research underwater has changed the way I look at the marine ecosystem. Scientists are only just beginning to understand what is beneath the surface and with global climate change occurring, the more we know now, the better we will be able to predict and prevent the loss of this precious ecosystem!

*The Bermudian Government has strict rules about scientific collection to protect corals, and collecting a coral without a permit is against the law.  Even touching corals can cause damage or spread disease, so this is something recreational divers should never do!

Monday, February 2, 2015

It’s About The Journey, Not The Destination

The following blog post was written by a 2014 National Science Foundation (NSF) funded Research Experience for Undergraduates (REU) student following their internship at BIOS.

Hello, my name is Gabriel Schuler. I am twenty years old and currently a junior at Saint Francis University (Loretto, PA). I am an REU (Research Experience for Undergraduates, funded by the National Science Foundation) intern working under Rachel Parsons in the Microbial Observatory at BIOS.  For my project I am studying ocean microbiology at the BATS site. It is specifically focused on bacterioplankton community structure within the oxygen minimum zone.

The BIOS station is located on St. George’s Island. The easiest way to get to BIOS, when arriving at the airport, is by taxi. There is also a bus available from the airport to St. George’s and from the closest bus stop you can walk to the BIOS station. Yet, being located so close to the water presented itself more unique ways of traveling to the airport.

One intern from England kayaked to the airport. My project partner, David was determined to outdo the kayak. The plan we came up with was to build a raft and paddle that raft to the airport. That night we began the build of the raft.  

Gathering bamboo poles that had been cut down we started to build a frame of what size we wanted the raft to be. We kept adding more and more poles of bamboo and tied them together with homemade rope from palm branches and old rope that was found. This finished raft was named the AE “Airport Explorer” after the R/V Atlantic Explorer owned by BIOS.  

We then carried the finished raft to the water to see if it was a sea worthy vessel. After being pleasantly surprised that it floated, we used kayak paddles to slowly make our way to concrete beach. It was then tied up for the night. 

The next day we attempted to bring David to the airport using the little AE. We thought that using the kayaks to help pull our raft would make it faster, however this did not help. In the end the raft was too slow to make it to the airport, but as the saying goes it’s about the journey not the destination.