As beautifully
illustrated by Jaron Bowton in the Saturday, September 7th blog post, our group
projects are officially underway and today marks our halfway point! (although
some have been working extra hard to get further along in their projects). Today was
devoted to working on projects and our time between breakfast and 11:00am was
spent working independently on the STRI campus. At 11:00am Jan gave a
wonderful lecture on the resistance, resilience, and recovery of coral reefs,
along with the effects of divers on coral reefs. Following a delicious lunch
including mackerel, we continued our work, splitting up into
two groups one going to Mangrove Point and the other staying closer to STRI.
Jaron and Will waving goodbye to the other group, while on their way to do their project at STRI Point |
Today, I am
focusing on project updates and on how things have been going now that
multiple days have been available to collect data, but first I'd like to give
our blog readers a little insight into the groups. Each group has earned a name describing them and the dynamics between each person in the group. Enjoy!
Get to know the groups
Team Buff- Susanna,
Kristi, and Robbie
Team Buff |
The Firemen- Will &
Jaron
Will (left) & Jaron (right) during lecture |
Whether it is working
with the infamous and dangerous fire coral, putting hot sauce on everything at
every meal, or just looking good on a regular basis, this team is definitely on
fire and their friendship has flames that cannot be put out.
Jaron (left) & Will (right) heading out to STRI Point to work on their project |
The Cubazoan
Ninjas-Mandi & Christy (aka shark)
Mandi (left) & Christy (right) ready to fight any jelly fish that come their way |
This group has exhibited
their lack of fear, not just by being the only group that has a project that
requires them to do night snorkeling, but they also stare fear right in the eye
every time they go out by swiftly and gracefully dodging stinging box
jellies in their mangrove sites during each night's trip.
The Damsels in Distress-
Kassie and me (Theresa)
Me (Theresa) (left) & Kassie (right) |
Projects, Projects, Projects
At the beginning of each description there is a reminder of what each group is doing, for those who have
forgotten or might not have read Jaron’s beautifully written blog entry (which
can be found at http://oimbpanama.blogspot.com/2013/09/research-time.html):
Depiction of Team Buff in the field. Kristi (left) & Robbie (right) Picture by Susanna |
Team Buff-Susanna,
Kristi, and Robbie are focusing on the gradients of seagrass epibiont (animals and plants that live on the blades) grazing
and herbivory with distance from the mangroves as well as exploring differences in sea grass shoot density and height.
Samples of epibionts ready for drying |
Measuring of the surface area of the sea grass blades |
UPDATE: Since Saturday, Team Buff has added two more sites, but everything
is going a lot quicker now that they have a routine down. They are done
collecting all of their turtle grass samples. Next they have planned a swim-over survey to assess what herbivores they see that might
attribute to the bite marks they have observed on the turtle grass. In the lab
they have been looking at epibionts by scrapping them all off of the
second oldest blade (to maintain consistency) and burning the samples to get the
dry weight. They are taking pictures of the blades to determine the surface
area, for an epibiont to surface area ratio. In the field today they
looked at the bite marks on blades of turtle grass in a 20x20cm quadrant and,
like all good scientists, persisted through the entire sampling process despite
tons of stinging hydroids on the sea grasses.
Kristi (left) & Susanna (right) working on scraping off epibionts |
Robbie in the field working hard |
The Firemen- Will &
Jaron are trying to correlate both micro- and macro-morphology with the
flow rate of the water.
Clod cards being used out in the field |
UPDATE: Two sites have been set up, one at STRI Point and one at Reef Point.
Both sites have been sampled a total of 3 times and so far they have found that
at Reef Point, there are both extremes (high and low) flow rates and at STRI Point there is a mixture of medium flow rates. To determine flow rates they
have been using two methods; Clod cards, which are used to measure long term
water flux, and fluorescine tests, to measure short term flow
rates. Overall they say that things are going well, despite the fact that “there
have been a couple breaks in the process along with a couple burns along
the way”.
The Cubazoan Ninjas-Mandi
& Christy hypothesize that because mangrove prop roots are a day
time refuge for juvenile fish to avoid predation from visual predators, there
will be a greater abundance of fish during the day than at night.
Mandi (left) & Christy (right) on doing night observations |
UPDATE: As of tonight, they have visited a total of 3 sites; 2 times during the night and 1 time during the day, meaning they are half way through with their data collection! So far, they have identified 17 different types of fish including both adults and juveniles. Everything has gone relatively smoothly, and the data is supporting their hypothesis. The only problems they have encountered are low visibility due to increased sedimentation in the water that has been stirred up by the recent rains... and the jellies. During the night swims they have encountered box jellies, which are abundant in the mangroves. "Fish rock, jelly fish do not" -Mandi and Christy
Example of one of the many fish Mandi & Christy observe while out in the field |
Mangrove roots, where Mandi & Christy conduct their observations |
The Damsels in Distress-
Kassie and I (Theresa) are looking at the differences in aggression
between individuals that maintain territory on continuous reefs and isolated
patch reefs.
Me (Theresa) measuring out in the field |
Kassie taking observations |
UPDATE: So far we have collected
two sets of data and taken measurements to map the distances of
the territories from each other and from the mangroves. Things have been going
really well, except for the schools of small fish swimming over the
territory during observations, the change in light when the sun comes out from behind the clouds, and an increase in
sediment from recent rains, which all have made it hard to see the focal
animal.
Other Exciting Things Happening at STRI
Today was an eventful day at STRI. Apparently, the Dallas World Aquarium had permission from the Panamanian government to export 8 Pygmy three-toed sloths. Pygmy three-toed sloths are endemic to an island near Bocas called Isla Escudo de Veraguas, where there is thought to only be about 79 individuals. When they went to the Bocas del Toro airport, they were greeted by a group of locals protesting the export of these animals. In the end, the Dallas World Aquarium decided to return the animals to the wild and so they were brought to STRI where they were then transported by boat back to their home to be released.We did not see the animals as they were each in a box, but we watched them being loaded into the boat for their return to their island.
-Theresa Berkovich
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