2012 Wrap Up – Notes From a Field Course

By Jim Haw

Originally published at ScientificAmerican.com

Planning for this year’s Guam and Palau course stated about two weeks after we got back from last year’s course. Halfway through our stay in Palau this year, my co-instructor Dave Ginsburg and I were being interviewed on Oceana Television Network when the anchor asked if we were doing the course next year. I demurred that if I said “yes” it would mean that we were officially working on the course year-round. Still ignoring that question for another couple of weeks, the last year has been, well — a lot of work but enormously satisfying. There were a lot of lessons learned, nearly all very positive.

One of the first things we did for this year’s course was to greatly expand the application form. In addition to the very extensive dive physical form we added a very lengthy “release” in which we put prospective students on notice about everything from our necessarily inflexible attendance policy through the required swim test, weekends on Catalina, deadlines, course expenses, and rigorous academic expectations — even (especially) in paradise. Each item on the release/application had a sign-off, and item 1 required the applicants to acknowledge that they had read all of our Scientific American blog posts from last year. “I didn’t know that we had to ….” wasn’t going to be something we would be listening to this year.

The application also requires a photocopy of the student’s passport showing number and expiration. We had about 50 application requests for what ended up being two-dozen slots in the class. Some prospective students who did not complete the application had scheduling conflicts or other external limitations, but I imagine that a few realized that our program required more than they were willing to commit to. This release-application model was quickly adopted in a general way by several of the other field courses in Dornsife. Our Belize course application, for example, requires that the prospective students acknowledge that they will be expected to take anti-malarial drugs.

The application stack grew over the fall semester as we were preparing for improved dive training, more rigorous academic content, improved first-aid components, and better field experiences. USC Dive Safety Officer Gerry Smith convinced a local dive shop to donate some SCUBA tanks and sell others at a steep discount so that we would have a set of tanks on the main campus for pool training. Our office suite now has 32 candy-colored 62 cf aluminum SCUBA tanks. Gerry also got his hands on several hundred pounds of lead shot and sewed a few dozen soft weight belts for use in the USC pool without the threat of chipping tiles that come with conventional SCUBA weights.

Meanwhile Dave and I navigated the Program through curricular approval. It is astonishingly easy to create a new course at USC through the mechanism of 499 – Special Topics. But once a course has been taught twice as 499 it must go through an exhaustive approval process to become a permanent course. We used the 499 mechanism twice, and last fall we created 480 “Integrated Ecosystem Management in Micronesia” as the permanent catalog listing, but not without several back-and-forths through the curricular process. My joke that “Curriculum Mechanics is harder than Quantum Mechanics” was pretty stale by the end of the road.

Before last year’s class we had added a new 2-unit course ENST 298 “Introduction to Scientific Diving” as a way to award some credit (and enforce attendance) for some of the essential run-up to Guam and Palau. American Academy of Underwater Sciences (AAUS) scientific diver certification requires over 100 hours of academic content. Recent changes to AAUS guidelines require formal certifications in CPR, basic first-aid, AED, and oxygen administration. We needed to get all of our students through all of that plus basic open water SCUBA and NITROX (oxygen-enriched air) certifications before we took them overseas as “Scientific Divers in Training”.

We also had to get them through the basics of coral reef ecology and diving physiology and physics, teach them the basics of scientific diving and the detailed sampling protocol including 24 species IDs for the surveys in Palau. So ENST 298, a 2-unit course, met every Friday afternoon in the spring for one hour of lecture and two hours of lab plus three mandatory three-day weekends on Catalina Island. We plowed through five books plus handouts.

If ENST 298 is so much work, why is it only 2 units? The answer had, in part, to do with the Maymester programming concept. ENST 480 e.g., “Guam and Palau” ran from May 14 — a couple of days after commencement — through June 3, the same time frame as some summer courses at USC. But administratively a Maymester course is part of the student’s spring semester registration — and hence spring fee bill. Maymester, among other advantages, allows a student to participate in a short-term study abroad course (or other intensive coursework) without having to pay for summer tuition.

At USC, a student may register for 18 units in a semester and pay the same amount of tuition that they would pay for 16 units. So, if a student does Guam and Palau with us, takes three normal four-unit courses between mid January and early May plus ENST 298 during the same time as those other courses along with 480 in Maymester — their tuition payment is the same as for a more typical registration. We could have justified 298 as a four-unit course (the same as 480) but it would have either increased the tuition burden or interfered with registration for other courses. So we have a six-unit, two course program.

While I’m on the subject of course-related expenses, flying to Guam and Palau is not cheap, and we also incur a lot of expenses in California, before we get on the first airplane. USC Dornsife has a program called Summer Undergraduate Research Fellowships (SURF), which awards up to $3000 for a Dornsife student with a GPA of 3.0 or higher for summer research. This year most of our students received the full $3000. This brought the cost of the entire program down to textbooks, mask, fins and snorkels, certification cards, some meals, and maybe a little over $1000 in other expenses for some students. One student qualified for a Gold Family Scholarship and got very nearly everything paid for by USC Dornsife.

Dave Ginsburg (left) and Tom Carr begin the annual ritual of filling the office suite with dive gear and CPR manikins. (All photos by the author).

ENST 298 met for the first time this year on January 13, 2012. There was no such thing as typical class meeting. On four weeks we lectured for an hour and then spent 90 minutes in one of the campus pools, usually on SCUBA. We did CPR on manikins, practiced administering shocks using AEDs, and we went through a lot of physics and biology.

Something that helped a lot this year was that we used the NAUI e-learning system instead of traditional lectures for basic SCUBA classroom instruction. The students then did that work on their own, leaving us with more classroom time. We added Marlowe Anderson’s “The Physics of SCUBA Diving” to the course books, allowing me to derive elements of the Navy dive tables in class (and test on this). We also had a book that covered diving physiology, the usual NAUI manuals for Open Water, NITROX and Master Diver plus various first-aid instructional materials.

One very special lecture in ENST 298 was given by Prof. Geoffrey Middlebrook of the USC Writing Program on the subject of academic blogging. And it made a difference. I am a proponent of writing throughout the curriculum, and I think writing needs to be a lot more active than it normally is. In more traditional courses writing assignments, if any, are seen by a single reader, marked, and then returned — to be tossed out with the trash. For some students this was the first time they had writing returned to them with instructions like “start over – it’s not good enough – for the reasons listed below”. And then after revisions and editorial changes their work is published where anyone can read it. This is much more active. Also several of the students were well equipped with serious cameras, and everyone else was carrying a point and shoot. So words and photographs became a daily activity.

One of the advantages of diving a transect tape on Catalina becomes evident when the visibility silts out and it is the only thing you can still see.

In March and early April we spent three weekends on Catalina, meeting at 6:45 on Friday mornings to board a bus followed by a boat and returning to campus on Sunday afternoons. Those weekends had up to four dives each as well as lectures, exams, blog workshops, swim tests, filling SCUBA tanks, and sleep. On the first two weekends we had extraordinary conditions for Catalina in the spring — up to 70 ft. visibility.

We also had some extra help. Bradley Walker, a former Navy SEAL and high-level SCUBA instructor, helped out with the basic open water instruction. As did some of the other scientific divers: graduate student Chris Suffridge, postdoc Anand Patel, and our former students Austin Hay, Caitlin Contag, and Dan Killam. Austin, having completed Dive Master training with Bradley, was to come with us to Palau to assist with general safety and survey organization. By the third weekend on Catalina we were back to the limited (or nonexistent) visibility common for spring diving in California, so the students got to work in some more realistic conditions as well.

First science dive on Catalina. Buoyancy and compass skills are not always on display at this point in the course.

Finally, after all of that — an entire semester’s worth, it was time for our field course to start. USC held commencement on Friday May 11, and the following Monday morning we were on the boat to Catalina for three weeks in the field. The six days in Catalina were spent on navigation, scientific diving and deeper dives — out to 60 fsw in our cove. We also received a great lecture and lab on fish collection by Chris Plante from the Aquarium of the Pacific in Long Beach. Twice, Tom Carr made the one-hour dive on dirt roads to Avalon with sick students. Immediately before we left Catalina another student banged her knee – which swelled to grapefruit size on the flight. She disembarked onto Guam soil by wheelchair. Once again Tom was off to a hospital and then back again for an MRI. The student only had a sprain and was quickly cleared to dive, but did some of the terrestrial activities on crutches. (She was more mobile in the ocean than on land). Tom is, among other things, an EMT and a Captain (Reserve) in the Riverside County Sherriff’s Department. When a student is sick or injured in the field you could do worse than have your own EMT/police officer as a first responder. Since Tom is also a Shift Supervisor at the Catalina Hyperbaric Chamber he would useful in the unlikely event of a diving accident.

On Guam, a Brown Tree Snake crawls up my arm.

Brent Tibbits and his colleagues at the Guam Department of Agriculture Division of Wildlife and Aquatic Resources were even more helpful than they have been in past years. Day one in Guam was at their headquarters interacting with critically endangered birds and a fruit bat, and (somewhat ironically) handling a juvenile Brown Tree Snake, a mildly venomous viper that when mature is highly aggressive. Brent latter took us on a tour of the Massa Watershed, a labor of love for him that provided us with some of the best academic content for the course. Brent also gave us a lecture in our meeting room at the Hilton.

We only spent one day diving on Guam to leave more time for the monitoring project on Palau, but what a day of diving. The first dive was on Western Shoals Reef, which is adjacent to where the Navy wants to demolish other reefs to make way for carrier berthing. As we surfaced into poring rain, an Ohio-class SSGN (a ballistic missile submarine converted to carry a large number of cruise missiles) passed immediately in front of our dive boat — perhaps 300 feet away — as a coast guard vessel with a manned machine gun kept watch between us. The dive boat captain insisted it was a smaller Los Angeles class submarine, and I called it that in an earlier blog post, but the photo clearly shows it was the more massive Ohio class — with a hanger for some sort of SEAL delivery vehicle on the hull.

This was a coincidental reminder of the elements of the course focusing on the military buildup on Guam with its flawed environmental review. On our second dive in See Bee Junkyard the students ran transects around discarded bulldozers and other WW II detritus. Our last day in Guam was a mandated free day, and it was the occasion of the closest thing to a glitch in the entire program. Nine of the students rented motor scooters from a lot a mile from the hotel and went off in various directions oblivious to the gridlock that roadways on Guam become on Friday afternoons. We were still collecting the last of them along the roadside as the shuttle and rental van drove to the airport, but no one missed the flight, and the only item left at the hotel was repatriated.

I should mention that we also had two textbooks for 480 as well as a weekly examination. We used the very excellent “The Biology of Coral Reefs” by Sheppard et al. — if we wrote a lab manual for the marine components of our course we could do no better than that book. We also had Pat Colin’s “Marine Environments of Palau”. More on Pat Colin later. Basically, on the last working day on any island, Catalina, Guam or Palau, the students had a traditional exam. Most of it was based on the assignments in Sheppard or Colin, but we also threw in questions from the course blog, which was quite the bonus for the students who found that they were being tested on something they wrote!

Arriving in Palau, we got to the hotel at a decent hour for once. The first full day in Palau was a visit to the Ngardmau Falls on the island of Babeldaob, which is morphing into a semi-developed ecotourism destination complete with a monorail train for those (like our knee-sprained student) who were not up to the steep steps down to the waterfall and back. I took a few photos of the students cavorting at the falls and then headed into the jungle on the tracks of a different train.

Two of the derelict little locomotives from the WW II Japanese bauxite mining operation on Palau.

Before and during WW II the Japanese used forced labor from Korea, Okinawa and Palau to surface mine bauxite for producing aluminum, a strategic resource for aircraft production. Some of the mines were near the waterfall, and the tracks from a narrow-gage railway that carried out the ore are still extant, briefly paralleling the monorail for the modern conveyance. I followed the tracks a ways into the jungle and found the remains of two of the locomotives. I was even able to determine that a U.S. manufacturer (Hercules Engines) made some of the components of these locomotives, which were labeled “Saka Works” in English. I had hoped to run down some more information on the railway and the bauxite mines (and no doubt the suffering of the miners), but I was unsuccessful. Palauans have access to little of their history, and if the Japanese recorded anything about this, I didn’t immediately find it.

Much of our time in Palau was spent doing surveys in the Ngederrak Marine Conservation Area, in support of Koror State and the Coral Reef Research Foundation. As in Guam we had a lot of help. Ilebrang Olkelriil and King Sam from the Koror State Department of Conservation and Law Enforcement were of fantastic help, and King accompanied us on the dive boats on some days. Here the students performed the most important part of the course — functioning as real scientific divers giving Koror State some of the data they need to get the Rock Islands listed as a UNESCO World Heritage Site. The diving those days could have been described as repetitive and highly scripted, but the students didn’t see it that way.

By the time we had finished our work in Ngederrak as well as surveys at Short Drop Off and Ngederchong as control sites, the students were looking very good in the water, with excellent buoyancy control and situational awareness. Even so I had not expected that the Dive Safety Officer would clear them to make one of their last dives at Blue Corner, which is consistently listed as one of the top dive sites in the world. Actually he provisionally cleared them for Blue Corner, provided that the next day’s dives at Ulong Channel went well. They did. Last year we had an immense current at Ulong Channel, sweeping us into the lagoon like aircraft flying up a canyon. This year we caught Ulong closer to slack, and it was more sedate, just barely a drift dive, and with fewer sharks.

The final day of diving in Micronesia started with Blue Corner. This site features a wedge-shaped reef with vertical wall drop-offs on either edge. The contour ensures an active upwelling on the leading edge relative to any prevailing current. Deepwater upwellings bring up abundant nutrients drawing very high fish densities and in turn large numbers of reef sharks. These currents, outside the fringing reef of Palau and hence away from any runoff, also provide spectacular visibility. We dropped from our three boats into some of the bluest waters I have every seen. Visibility was about 150 ft. A nearly unique feature of Blue Corner is the use of reef hooks to “hook in” against the current.

Our groups settled in on reef planes between 40 and 60 feet below the surface, hooked in and enjoyed the show. For 25 minutes we watched the parade of gray reef sharks, the less abundant black tip sharks, giant Napoleon wrasses, bumphead parrotfish and other fishes while kiting on our reef lines. We then unhooked, drifted back over the reef along with a turtle, ascended for a safety stop, and recovered. Everyone looked great in the water. We made one final dive after lunch in German Channel, which can be a spectacular site (with Manta Rays), but Blue Corner was the highlight of the day. Key to our success in Palau was the assistance we got from Sam’s Dive Tours and especially General Manager Dermot Keane. Sam’s gave us three boats, each of which could have handled a dozen divers. With typically eight students and two faculty or staff per boat we were never crowded.

Dave and I don’t get to relax in the water very much — our roles are primarily safety, and along with Tom, Gerry, Austin, and any other dive professionals in the group, we are watching the students pretty closely. After the first few dives I’m usually also handling a fairly large camera and strobe system to capture some of the stills. This means that I have to think ahead of the action. My least favorite underwater photo is anything that is swimming away from me.

At Blue Corner students (right and upper left) watch sharks while Dave Ginsburg (lower left) watches students.

Shots of students collecting data on transects are the easiest to get: let them swim the transect out, wait a couple of minutes, then follow the transect tape and swim through the students’ formation while they are counting invertebrates and reeling up the tape. The hardest photos include students encountering charismatic sea creatures. A photograph of a shark is just another photograph of a shark, but a photograph of a USC student with a shark has value. So, at Blue Corner, for example, I placed myself behind most of the other divers, so that most of my shark photos would have students in the foreground.

The last day in Palau was the Rock Island kayak tour with naturalist Ron Leidich, who is something of a force of nature on Palau. Among very many other details, Ron led the students up the side of a small island where he had just found the wing of a U.S. B-24 bomber that was lost in WW II and not seen since. That night Dave and I sent everyone else to the airport for the very long trip back to LA and then we moved across the street into an apartment in the Coral Reef Research Foundation run by Pat and Lori Colin, the author of one of our textbooks. Dave Ginsburg reported in a recent blog on the rediscovery of the lost brittle star species, but those four extra days in Palau were not all glory. For much of the time it poured rain, and we did a lot of grading. Our hands were in constant pain from hydroid stings and spicule-induced rashes that we picked up from sponges during the brittle star hunt.

All indications are that the students had a transformational experience. Quite simply it exceeded their expectations, which were already high. What did they get out of the program? If they had to list one thing it might be doing research to help Palau get the Rock Islands listed as a UNESCO World Heritage Site. They also became full American Academy of Underwater Sciences Scientific Divers. In the future some of them may work full time as AAUS divers at universities, aquaria, or state and federal agencies. More immediately and more likely they will continue their scientific diving at USC. When a visiting scientist comes to our Catalina Campus for specimen collection he or she is likely to be paired with one of our students.

Several of the students show off at the end of the last dive in German Channel.

Some of the students are continuing the surfgrass monitoring project headed up by Dave. Others are increasingly showing up on the volunteer dive staffs at the Aquarium of the Pacific in Long Beach and the California Science Center across from campus. One is starting a Ph.D. in marine ecology at UC-Davis and several are applying for internships with governmental agencies that monitor coastal environments from California to the Virgin Islands. Three of this year’s class, Dawnielle Telez, Stephen Holle, and Judy Fong, went almost immediately from Palau to Catalina Island where they are spending the summer as interns for the Catalina Conservancy along with Justin Bogda from the 2011 class. There they are doing trail building and non-native plant removal Monday through Friday, and diving on the weekend. Most of the 2010 Guam and Palau class graduated from USC last month, and it seemed that they had a generous share of academic honors. If nothing else, experience as a scientific diver makes an application to graduate and professional schools or a White House internship stand out. Dave Ginsburg and I are entirely satisfied that the program is transformational for many of the students.

I want to close by thanking Bora Zivkovic of Scientific American, who gave us a lot of latitude on content this year, and who was always happy to receive a post, wherever he was at the time, as long as I remembered to include the images separately and not just embedded in a document. Usually I remembered.

Editor’s note: Scientific Research Diving at USC Dornsife is offered as part of an experiential summer program offered to undergraduate students of the USC Dana and David Dornsife College of Letters, Arts and Sciences. This course takes place on location at the USC Wrigley Marine Science Center on Catalina Island and throughout Micronesia. Students investigate important environmental issues such as ecologically sustainable development, fisheries management, protected-area planning and assessment, and human health issues. During the course of the program, the student team will dive and collect data to support conservation and management strategies to protect the fragile coral reefs of Guam and Palau in Micronesia.

Instructors for the course include Jim Haw, Director of the Environmental Studies Program in USC Dornsife, Assistant Professor of Environmental Studies David Ginsburg, SCUBA instructor and volunteer in the USC Scientific Diving Program Tom Carr and USC Dive Safety Officer Gerry Smith of the USC Wrigley Institute for Environmental Studies.

Posted in Catalina Island, Guam, Palau, USC | Leave a comment

“Think Like a Brittle Star”

By David Ginsburg

Originally published at ScientificAmerican.com

On a recent collecting excursion in Palau, I repeated the mantra “Think Like a Brittle Star” over and over as my colleague Jim Haw and I searched for a specimen (Ophiotylos leucus) that was last seen 76 years ago by Japanese scientists (cf. Murakami 1943). With the help of Pat and Lori Colin from the Coral Reef Research Foundation based in Koror, we poured over Japanese-era maps and aerial photographs trying to identify at least a general location in the intertidal zone from where we could start our search for these animals.

Aerial view of SW Nikko Bay, Palau (Koror State). Image courtesy of the Coral Reef Research Foundation.

Beginning in the 1920s, as part of the South Pacific Mandate, Japan began a large-scale effort to develop a range of natural resources available on these islands, which included phosphate and bauxite mining, oil exploration, as well as copra and sugar cane production. Natural science also played an important role in the mandate, and in 1934 the Palao Tropical Biological Station was established on Koror Island with a research mission to study coral reef biology and ecology (Abe 1937, Abe et al. 1937). Internationally recognized as the premier location in the Western Pacific for coral reef studies (Yonge 1940), basic research on Palau suddenly became complicated when Japan attacked Pearl Harbor on December 7, 1941.

Japan declares war on the United States. Image courtesy of the Honolulu Star-Bulletin archive.

Specimens collected by Japanese researchers at the Palao Tropical Biological Station were sent to their home institutions for further study and analysis. Results from these investigations were published in the appropriate scientific journals of the day (see Work Cited for examples). While that primary literature is still accessible today, the majority of voucher and type specimens were lost (most likely destroyed) during the war, including the brittle star Ophiotylos leucus, which was collected and described by Murakami and his colleagues in 1938.

While collections of Ophiotylos have been made since (from Hawaii and Japan, respectively), they are classified based on a suite of Palauan type specimens not seen since World War II. To add further intrigue to this story, the genetic relationship among different populations of Ophiotylos is unknown. Unlike other species of brittle stars, which haphazardly broadcast their gametes into the plankton, Ophiotylos broods its young (early stage juveniles remain close to the parent). How this species has found itself distributed across its current range is a mystery. Thus, the Palauan type specimen may serve as an important genetic link between individuals collected across the temperate and tropical waters of the Pacific.

Front cover of Palao Tropical Biological Station research journal (May 1937; Volume 1, Number 1).

My initial interest in this project was spurred by a conversation with my friend Gordon Hendler, curator of echinoderms at the Natural History Museum of Los Angeles. As Gordon’s specialty is the phylogeography and taxonomy of brittle stars, he was excited to learn that I was once again leading a group of USC undergraduates to Palau, and planned to stay a few extra days after the course was complete to follow up on a couple of research projects. From this meeting, we hatched a plan to track down Ophiotylos and reopen a marine science cold case, which has been a pet project of Gordon’s for some time. Although he could not join us on our trip, Gordon provided Jim and me with a stack of relevant research materials, maps, and the advice that our success in the field rests largely on our ability to “think like a brittle star.”

Given that the brittle star in question is roughly 2-3 cm in total length, lives somewhere amongst the high intertidal, sea grass-coral rubble habitat of Nikko Bay, and was last seen some 70 years ago, I figured I could use all the advice I could get on this project. We started our search for the mysterious Ophiotylos by snorkeling along an area of Nikko Bay known as Omode Channel. After our first day in the field, we turned up more than our share of brittle stars (as well as a fair number of cuts, stings, and irritations from brush-ups with coral, hydroids, and sponges). Unfortunately, Ophiotylos was not amongst them.

On our second day, however, we struck gold! After several hours of swimming or crawling in face-deep water, and having the depressing feeling that our efforts were no better than a wild goose chase, we spotted three individual Ophiotylos specimens amongst the benthos in as many minutes. After searching for more without further success, we eventually ended our excursion and headed back to the Coral Reef Research Foundation’s laboratory facility. As we were scheduled to return to Los Angeles the next day, three specimens would have to do. Interestingly, looking through Murakami’s article from 1943, the last collections of Ophiotylos from Palau were made on June 6, 1938 – nearly 76 years to the day of our recent discovery (June 5, 2012).

Ophiotylos leucus specimen collected from Omode Channel, Nikko Bay, Palau (Koror State). Photo by Jim Haw.

I can’t say our field techniques were elegant; one minute there was a cloud of sediment and muck and the next the little beast we were looking for was right under my nose. What I can say with absolute certainty is that the only thing on my mind leading up to that eureka moment of finding Ophiotylos were Gordon’s final last words of advice; the path to success is to think like a brittle star!

Work Cited:

Abe, N. (1937) Ecological Survey of Iwayama Bay, Palao. Palao Tropical Biological Station Studies. Vol. 1, No. 2

Abe, N., Eguchi, M., and F. Hiro (1937) Preliminary Survey of the coral reef of Iwayama Bay, Palao. Palao Tropical Biological Station Studies. Vol. 1, No. 1

Murakami, S. (1943) Report on the Ophiurans of Palao, Caroline Islands. Journal of the Department of Agriculture. Kyusyu Imperial University. Vol. 7, No. 4

Yonge, C.M. (1940) The Palao Tropical Biological Station. Nature 145, 16-17

Editor’s note: Scientific Research Diving at USC Dornsife is offered as part of an experiential summer program offered to undergraduate students of the USC Dana and David Dornsife College of Letters, Arts and Sciences. This course takes place on location at the USC Wrigley Marine Science Center on Catalina Island and throughout Micronesia. Students investigate important environmental issues such as ecologically sustainable development, fisheries management, protected-area planning and assessment, and human health issues. During the course of the program, the student team will dive and collect data to support conservation and management strategies to protect the fragile coral reefs of Guam and Palau in Micronesia.

Instructors for the course include Jim Haw, Director of the Environmental Studies Program in USC Dornsife, Assistant Professor of Environmental Studies David Ginsburg, SCUBA instructor and volunteer in the USC Scientific Diving Program Tom Carr and USC Dive Safety Officer Gerry Smith of the USC Wrigley Institute for Environmental Studies.

Posted in Palau | Leave a comment

Monitoring Contaminants of Emerging Concern Using New Passive Sampling Techniques

By Abigail Joyce and Mallory Pirogovsky

Originally published at ScientificAmerican.com

Hydrophobic organic compounds are often introduced into aquatic environments through manufacturing and sewage discharge, storm water runoff, and by leaching out of consumer waste. The hydrophobic nature of these compounds allows them to concentrate in the sediment. Once in the sediment, compounds can be broken down or re-suspended into the water column. Accumulation of these compounds in addition to legacy compounds existing in the environment from previous use (e.g. polychlorinated biphenyls (PCBs), polyaromatic hydrocarbons (PAHs) and DDT) can lead to lasting ecological effects and possible toxicological effects on local fauna and humans. Contaminants of emerging concern (CECs) include: pesticides, insecticides, herbicides, pharmaceuticals and other personal care products, flame retardants, and DDT metabolites.

There are currently gaps in our knowledge of occurrence, fate, and health hazards of many CECs. Assessing the risks they pose to the environment and human health is essential so that regional monitoring and regulation can be effective. Measuring aqueous concentrations of CECs can provide perspective on the effectiveness of reducing emissions and lowering of exposure, and can be linked to bioaccumulation and biomagnification risks in the food chain. However, because many of these chemicals are hydrophobic, their aqueous concentrations are low (generally at a sub ng/L concentration). These low concentrations make targeting and quantifying CECs a challenge.

Traditionally aqueous concentrations have been monitored by extracting large volumes of water or by measuring bioaccumulation in aquatic animals (i.e. bi-valves). Large water extractions generally have a larger (less favorable) detection limit and are very labor intensive. When monitoring aquatic animals it is difficult to determine a dissolved water concentration; furthermore it is difficult to make comparisons between different environments, as different environments support different species.

In the early 1990’s passive sampling was introduced as an alternative for quantifying dissolved hydrophobic organic compounds in aquatic media. Passive sampling is a simple, low cost, no power, unattended method that concentrates analytes in a collecting medium from a sampling medium as a result of differences in chemical potentials. Two main types of passive samplers became popular: solid phase microextraction (SPME) and semi-permeable membrane devices (SPMD).

Typical deployment set up for SPME. (Image courtesy of SCCWRP)

SPME is comprised of a polymer coating fused to a silica fiber that can be directly injected into a GC port, eliminating all need for additional lab work up. Many different types of sorbent coatings have been developed making it available for monitoring a diverse amount of CECs. They are limited in their ability to be analyzed, and because of the small fibers they have relatively high detection limits and can be fragile.

SPMD is a low-density polyethylene tube filled with a lipophilic reservoir (e.g. triolein). These samplers require careful work up of the lipophilic reservoir and polyethylene tubing and are also prone to biofouling and can tear easily, but offer lower detection limits for many hydrophobic compounds. Passive samplers are typically operated in the equilibrium measurement mode, resulting in a time integrated estimate of dissolved HOC concentration over an extended time– which can take up to months.

Typical deployment set up for PE (Image courtesy of SCCWRP)

A new, simpler variation of the SPMD employs just the polyethylene (PE) cut into strips, which maintains the low detection limits of the SPMD, while creating a more rugged sampler than SPME and SPMD. PE has shown to be as efficient as SPMDs in sampling HOCs. However, PE is limited to polyethylene as a sorptive medium, narrowing amount of CECs that can be targeted. It also requires an in-lab work up. This work up however allows for each sample to be analyzed several times if needed.

Passive samplers have the potential to replace high volume water extraction and aquatic species bioaccumulation for the monitoring of CEC’s in marine environments. Environmental groups like National Oceanic and Atmospheric Administration (NOAA) collect mussels for their Mussel Watch project, which is an ongoing monitoring program at over 300 sites covering 140 different compounds. Programs like mussel watch collect mussels from coastal sites where these mussels grow naturally. These programs give good insight into a compound’s bioavailability and range but the results do not translate into water column concentrations and is limited to coastal areas where mussels reside.

A passive sampler monitoring study has no limits on where it can be done, and water column concentrations can be determined. Our passive sampler study was carried out jointing between USC Dornsife, Southern California Coastal Water Research Project (SCCWRP), and Loyola Marymount University using both PE and SPME passive samplers. With funding from SeaGrant the goal of the sudy was to determine the water concentration of several CECs. The chosen CECs included two metabolites of the legacy pollutant DDT (DDMU and DDNU), two flame retardants (BDE-47 and TBPH), two banned industrial chemicals (PCB 8 and 209), and one current use pesticide (Methoprene).

Deployment scheme. PE on copper wires were tethered to rope that was tied to mussel cage, SPME and alternative PE attached to mussel cage in copper housings. Multiple set ups were added to the same rope to provide data at different depths. (Photo by Abigail Joyce)

Two prominent features within the Southern California Bight are Santa Monica Bay and the Port of Los Angeles (LA Harbor). Along with urban runoff both Santa Monica Bay and Los Angeles harbor receive treated wastewater effluent. Hyperion water treatment plant located in Playa Del Ray has been in operation since 1894 when it began discharging into Santa Monica Bay. In contrast to the municipal water that Hyperion collects and treats, the Terminal Island water treatment plant collects and treats water from the heavily industrial LA harbor area. Located 20 miles south of Los Angeles in San Pedro, the Terminal Island discharge point is within LA Harbor roughly 275 m from the shore.

In summer of 2011 passive samplers (both PE and SPME) were deployed at both Hyperion and Terminal Island receiving sites at varying depths and distances from the primary output location. SPME fibers were encased in copper housings to protect the fibers and ward off biofouling. PE was deployed on copper wire rings and in copper housing. In order to compare these passive samplers’ uptake to the traditional mussel monitoring, live caged mussels were deployed alongside the passive samplers. Deployments and retrievals were done by boat both in the harbor and the bay. Passive samplers were retrieved after 29 days, and mussels were retrieved after 90 days. Results from this study are in the process of being published.

Results from this study will provide many facets of information: comparison of not only passive sampler uptake to live mussel uptake, but also uptake differences between passive samplers, how depth plays a role in the water column concentration, as well as whether proximity to the outfalls affects concentrations will also be examined. Furthermore the concentrations of the targeted CECs will be determined.

About the Authors:Mallory Pirogovsky (left) and Abigail Joyce (right) are both Ph.D. students in the Department of Chemistry in the USC Dana and David Dornsife College of Letters, Arts and Sciences, and are planning on graduating next spring using results from this experiment to support their thesis work.

Editor’s note: Scientific Research Diving at USC Dornsife is offered as part of an experiential summer program offered to undergraduate students of the USC Dana and David Dornsife College of Letters, Arts and Sciences. This course takes place on location at the USC Wrigley Marine Science Center on Catalina Island and throughout Micronesia. Students investigate important environmental issues such as ecologically sustainable development, fisheries management, protected-area planning and assessment, and human health issues. During the course of the program, the student team will dive and collect data to support conservation and management strategies to protect the fragile coral reefs of Guam and Palau in Micronesia.

Instructors for the course include Jim Haw, Director of the Environmental Studies Program in USC Dornsife, Assistant Professor of Environmental Studies David Ginsburg, SCUBA instructor and volunteer in the USC Scientific Diving Program Tom Carr and USC Dive Safety Officer Gerry Smith of the USC Wrigley Institute for Environmental Studies.

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An Interview with Karl Huggins

By Kaitlin Mogentale and Nicole Matthews

Originally published at ScientificAmerican.com

We recently sat down with Karl Huggins the director of the Catalina Hyperbaric Chamber, located at the USC Wrigley Marine Institute on Santa Catalina Island to discuss his scientific contributions to diving. Mr. Huggins developed an set of decompression dive tables he titled “New No-Decompression Tables Based on No-Decompression Limits Determined by Doppler Ultrasonic Bubble Detection”, renamed the “Michigan Sea Grant Tables” by the Scientific Diving community, and then the “HUGI Tables” by his friends.

USC Hyperbaric Chamber Director Karl Huggins.

Karl is an esteemed member of the diving community. He also developed the decompression algorithm that was used in the EDGE, the “first modern commercially successful microprocessor-based electronic dive computer,” (Barsky, 19).

In high school, he spent a considerable amount of time in the water– with the swim team and serving as a lifeguard. He found an air compressor and mask and used them to clean the high school pool; thus beginning his diving career. After high school Huggins enrolled at the University of Michigan with a focus on biological oceanography, where he was able to take a SCUBA diving course in 1976. The course was taught by Professor Lee Somers, who played an influential role in Huggins’ life — acting as his mentor.

After receiving basic SCUBA training, Huggins enrolled in underwater technology and hyperbaric chamber operation courses. These courses introduced Huggins to the complicated concepts of decompression He soon realized that he had a specific interest in decompression theories. Professor Somers provided Huggins with papers on decompression, enabling him to fiddle with decompression calculations. He also acquired a Navy Diving Medical Officer’s Student Guide, which he used to learn how to calculate the Navy Tables.

While playing around with numbers, Huggins concluded that he could enter the equations from the manual into the newly developed personal calculators of the time to come up with decompression schedules for any dive. He spent afternoons in the campus bookstore using one of the calculators on display to punch in numbers and equations, to see if he could manipulate the calculations to work for real diving situations.

The HUGI Tables on display at the USC Hyperbaric Chamber on Catalina Island.

On a diving trip to the Bahamas in 1979, Huggins was taught to do calculations for multi-level dives using the Navy dive tables. By Navy methodology, the 120-minute “tissue” compartment was always used as the controlling compartment for a repetitive dive (or a multi-level dive). Based on the calculations he had done before, Karl was uneasy about the results he was getting from the Navy tables. He found that many times the Navy method for repetitive dives placed a diver at higher risk for decompression sickness.

Encouraged by Professor Somers, Huggins began his work on his own tables, the HUGI Tables, which regarded all six compartments when deciding proper repetitive dive groups. Scientific programs picked the tables up, including the program at Catalina Island. At that time, Mr. Huggins had no idea that he would be involved with the facilities on Catalina Island in the future.

Following the success of the HUGI Tables, Huggins would give talks dealing with decompression models and tables. It was after these talks during an instructor-training course where Craig Barshinger, the founder of Orca Industries, approached him. Craig sought to employ him to aid in the development of a new and innovative dive computer. And so, Huggins formulated the decompression algorithm used in the dive computer’s functioning, and the first prototype of the EDGE dive computer was born. In fact, the EDGE dive computer was the first commercially viable dive computer to use algorithms (as opposed to dive tables) to solve for decompression schedules and limits in various diving situations.

Nicole Matthews (left) and Kaitlin Mogentale (right) stand in front of the Catalina Hyperbaric Chamber, with Chamber volunteer Bradley Walker. (Photo by Dawnielle Tellez)

In order to deploy the decompression device into the diving world, Huggins came up with test protocols for the computer. The hyperbaric chamber on Catalina Island best suited their needs and cost limits for testing the computer. He spent two weeks on the island in 1983 testing the decompression model in the Catalina Hyperbaric Chamber. This is where the Catalina Hyperbaric Chamber became an important part of his life. Following the tests he returned to the facility to help teach classes and participate in workshops. In October of 1992, he was encouraged to apply for the job of director of the Catalina Hyperbaric Chamber.

Aside from his daily duties as director of the Chamber, Karl Huggins focuses much of his energy on educating others about dive safety, especially as it pertains to diving accidents. After years of observing and treating various dive accidents, Mr. Huggins is quick to note that one should never rely too much on the numbers. The many evolving variables going into a dive can affect divers in ways that may not be predicted mathematically.

As new divers, Huggins advised us to know our comfort level and recognize when we encounter situations that exceed our skills. He urged us not to “push the limits” of the dive tables and our dive computers. He noted that most people encounter diving accidents after bolting to the surface due to panic.

Works Cited

Barsky, Steven M. “Karl Huggins’ Journey to the Edge: The Development of the World’s First Commercially Successful Dive Computer.” The Journal of Diving History 19.2 (2011): 19-23. Print.

Huggins, Karl. Personal interview. 18 May 2012.

Author Bios:

Kaitlin Mogentale is a freshman (rising sophomore) at USC pursuing a B.A. in Environmental Studies. She also looks to complete minors in Urban Policy & Planning and Spanish. She plans to use her interest and knowledge in the field of environmental science to serve as an advocate for businesses and developers, focusing on the importance and pertinence of environmentally sound practices.

Nicole Matthews is a freshman (rising sophomore) working toward a bachelor’s degree in Political Science in the USC Dana and David Dornsife College. After graduating, she plans to pursue a graduate degree in environmental law and policy.

Editor’s note: Scientific Research Diving at USC Dornsife is offered as part of an experiential summer program offered to undergraduate students of the USC Dana and David Dornsife College of Letters, Arts and Sciences. This course takes place on location at the USC Wrigley Marine Science Center on Catalina Island and throughout Micronesia. Students investigate important environmental issues such as ecologically sustainable development, fisheries management, protected-area planning and assessment, and human health issues. During the course of the program, the student team will dive and collect data to support conservation and management strategies to protect the fragile coral reefs of Guam and Palau in Micronesia.

Instructors for the course include Jim Haw, Director of the Environmental Studies Program in USC Dornsife, Assistant Professor of Environmental Studies David Ginsburg, SCUBA instructor and volunteer in the USC Scientific Diving Program Tom Carr and USC Dive Safety Officer Gerry Smith of the USC Wrigley Institute for Environmental Studies.

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New Methods to Avoid Decompression Sickness

By Kaitlin Mogentale

Originally published at ScientificAmerican.com

On one of our multiple dive training trips to California’s beautiful Santa Catalina Island, we were fortunate enough to receive a tour of the hyperbaric chamber stationed on the island. Inside the chamber, one of the volunteers runs through a quick explanation of typical treatment for a bent diver. The process of re-compression in the chamber complicated, and chambers must be fully staffed and well maintained to be of benefit to an injured diver. The experience left me wondering… Is there any other way to treat a bent diver?

Although the existence of an alternate form of treatment may not exist today, the future of diving medicine is advancing–and the possibility of medicinal decompression sickness protection is a topic of research interest. Research at the United States’ Naval Medical Research Center suggests new approaches to decompression sickness risk reduction. The scientists at the center are researching means of active elimination of the inert gas load in the body through two methods: immune system interactions and biochemical decompression.

The author stands in front of the hyperbaric chamber located on Catalina Island. Recompression in the hyperbaric chamber is the only cure to decompression sickness. (Photo by Karl Huggins.)

When a diver is surfacing, the nitrogen pressure in some tissues may exceed the ambient pressure. To reach equilibrium, our body tissues off-gas and release the excess nitrogen. Problems occur when a diver ascends too quickly. If the ambient pressure drops to a specific point (as decided by the over-saturation limit of nitrogen in a specific tissue compartment), the nitrogen solution comes out of the body tissues, forming bubbles. As the bubbles course through our body, an inflammatory signal is activated, and the nitrogen bubbles are easily trapped in the pathways through which they travel.

The result is that blood flow is blocked–potentially harming vital organs such as the spinal cord and the brain. One possibility of decompression sickness risk reduction, as explored by the NMRC, involves blocking the immune system’s inflammatory response to intravascular bubbles with the use of anti-inflammatory drugs. This technique is regarded as one of the safest and most effective ways of avoiding decompression sickness.

Another potential approach to DCS risk reduction is biochemical decompression. Through biochemical decompression, the human body is provided with the mechanisms needed to metabolize inert gas, such as nitrogen or hydrogen. Research thus far favors the insertion of bacteria with a natural ability to metabolize inert gases into the large intestine of human divers, by means of digestion of a bacteria-containing capsule, as the method for biochemical decompression. Experimental results show that the insertion of bacteria with the ability to metabolize hydrogen gas is very successful in removing a substantial amount of inert gas in rat and pig test subjects–substantial enough that the test subjects had lower occurrences of decompression sickness than their control counterparts.

Hydrogen gas is not typically used in diving gas mixtures; nitrogen has much greater application as a breathing gas. The NMRC’s research with nitrogen-metabolizing bacteria shows that there are many issues preventing its widespread use for decompression sickness reduction. For one, most bacteria will only fix atmospheric nitrogen in an environment that contains no previously fixed nitrogen. If the bacteria were to be used in diving situations, it would need to be able to fix nitrogen in an environment where N2 has already built up in a diver’s tissues due to compression under water.

Additionally, nitrogen fixation occurs at a much slower rate than hydrogen metabolism, making nitrogen-fixing bacteria less effective at reducing the inert gas load in the human body. To account for the loss in efficiency of nitrogen-fixing bacteria, an exceptionally large volume of bacteria would need to be inserted into the intestine–a volume much too large for practical use. In the future, genetic engineering could alter nitrogen-fixing bacteria so that the rate of nitrogen absorption is increased to a degree large enough for application in the diving world.

Decompression is a tedious, but essential part of technical diving. With the mechanisms of decompression sickness risk reduction discussed above, as well as ongoing research on numerous other methods, decompression times would be reduced. In the future, these mechanisms may become widely available to not only the Navy, but also divers like me. I would be thankful for a little peace of mind when it comes to my common-held fear of developing a case of decompression sickness.

Author Bio: Kaitlin Mogentale is a freshman (rising sophomore) at USC pursuing a B.A. in Environmental Studies. She also looks to complete minors in Urban Policy & Planning and Spanish. She plans to use her interest and knowledge in the field of environmental science to serve as an advocate for businesses and developers, focusing on the importance of environmentally sound practices.

Works Cited:

Dromsky, David M., Kayar, Sarah R. “Decompression Sickness Research: New Directions.” Naval Medical Research Center. 2000.

Lang, MA; Brubakk, AO. “The future of diving: 100 years of Haldane and beyond.” 2009.

Navy & Marine Corps Medical News: May 28, 1999.

Author’s note: A special thanks to Karl Huggins, director of the Catalina Hyperbaric Chamber, for sharing with me his time and expertise in decompression theory.

Editor’s note: Scientific Research Diving at USC Dornsife is offered as part of an experiential summer program offered to undergraduate students of the USC Dana and David Dornsife College of Letters, Arts and Sciences. This course takes place on location at the USC Wrigley Marine Science Center on Catalina Island and throughout Micronesia. Students investigate important environmental issues such as ecologically sustainable development, fisheries management, protected-area planning and assessment, and human health issues. During the course of the program, the student team will dive and collect data to support conservation and management strategies to protect the fragile coral reefs of Guam and Palau in Micronesia.

Instructors for the course include Jim Haw, Director of the Environmental Studies Program in USC Dornsife, Assistant Professor of Environmental Studies David Ginsburg, SCUBA instructor and volunteer in the USC Scientific Diving Program Tom Carr and USC Dive Safety Officer Gerry Smith of the USC Wrigley Institute for Environmental Studies.

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Spending a Day With a Palauan Matriarch

By Katie Graves

Coming from a family where mom managed the house and had a full time job along with other responsibilities, I am very familiar with women being in a leadership role, but I have never experienced a true matriarchal form of order.  This is partly why I have been so excited to visit Guam and Palau; both islands are traditionally matriarchal societies.  Prior to arriving in Palau, I was aware that a matriarchal system is practiced much like in Guam, and I was curious to see how the cultures compared and differed from a Western perspective.  It wasn’t until I saw firsthand the skilled women on Palau, though, that I understood how important and respected women are in their culture.

It was fascinating to learn about the perseverance of Chamorro women through time in Guam. Since the matriarchy on Guam is still strong today, women assume their leadership roles and have kept traditional burial and social customs alive. As my peers Iñaki Pedroarena-Leal and Santiago Fernandez discussed previously, Chamorro women also held political and spiritual leadership.  Some even fought with men against the Spaniards.  The most powerful woman in a clan holds more power than that of the most powerful male in the clan. The eldest daughter of the “highest ranked person in a clan”1 is one of the most influential people in a clan.  She holds a lot of power and responsibility for the group’s actions, lifestyle and wellbeing.  Chamorro mothers still assume their ancestors’ roles as the head of the house.  Weaving, reef fishing and pottery making1 are some skills these women perform in addition to their domestic duties.

Much like the Chamorro women’s abilities, Palauan women also possess similar skills and hold some of the highest authority in their states.  The first day in Palau, our group met a Palauan woman named Malahi.  She explained the ways women were and are respected by men and clans.  She showed us around multiple historical sites as insights into ancient Palauan culture.  One of the first places she brought us to was a “bai,” or male meetinghouse.  This structure was built out of carved wood and rope twine (no nails or screws were used).  It had animals, figures and symbols painted all over it; each holding a very specific and deliberate meaning in their story.

Female and animal figures painted on a male meetinghouse. By Kaitlin Mogentale.

Bats, Malahi explained, were painted hanging upside down around the entrance of the structure to remind men that they must keep their heads down as they enter–like a bat hanging upside down– to respect the chief leader.  I was most interested by the female figure painted at the very top of the building roof peak.  Depicted seated, naked, with lots of adornments, the image suggested a sexual connotation, but when I asked Malahi if she could explain more about this woman’s significance, she said that the female reminded the men that high status women, although not allowed in the male meeting house, were still superior to the men.  They decided which male would lead the clan and could select or remove a male from being leader.2   Such highly ranked women wore specific necklaces and jewelry to express their power and lineage.  Malahi herself is a highly ranked woman in her state, and was chosen to wear the very valuable money piece necklace2 that is passed down through women of utmost importance in each state.  The money piece is a smooth, curved rectangular shaped object strung onto a simple black cord.  Although it appears to be very simple, it has an irreplaceable monetary value due to its history and purpose to the Palauans.  Malahi explained that only after someone else is chosen by the elders to wear the necklace piece is she allowed to take it off.

Women in Palau have many craftsman skills, which Malahi proved to me later that day.  After visiting the male meetinghouse, our group took a hike to a popular waterfall site.  Malahi and I rode a newly built monorail down the mountain to the waterfall.

Author (left) seated on Monorail with Malahi and other Palauans. Photo by Katie Graves.

As we passed a large group of ferns along the side of the hill Malahi picked several fern leaves and within seconds made a fern crown and fit it perfectly on my head.  I was amazed at her fast and meticulous craftsmanship.  I wore that crown the rest of the day and appreciated every minute of it.  I am glad to hear that women still have such powerful status in society today, because after these past few days in Palau, I can already tell how influential this Palauan cultural experience has been for me.

Author wearing fern crown.

Works cited

1- http://guampedia.com/chamorro-womens-legacy-of-leadership/

2- http://www.everyculture.com/No-Sa/Palau.html#b

 

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Beginning My Journey as a USC Environmental Studies Major

By Judith Fong

Originally published at ScientificAmerican.com

Note: The students have now returned to Los Angeles from Micronesia and some are reflecting on their experiences. Remaining posts in this year’s blog will focus on lessons learned and ongoing environmental research activities in the waters off California.

I curled my toes in the soft white sand as I gazed out into the miles of sea. The vivid turquoise color of the ocean was unparalleled to any other waters I had ever seen in my life. On my left and right sat two new friends who I had not previously known existed before this past semester. And as the three of us stared into the unbelievably beautiful Palauan ocean, I realized that while most people would be blessed enough to touch or wade in that water, we would be even more lucky. Because approximately twenty minutes later we would pack up our bento boxes, climb into our boat, and spend the next forty minutes scuba diving among the ocean life that lay beneath the depths of that very ocean. This was no ordinary college course.

Author (bottom right) diving at Blue Corner Palau. Photo by Jim Haw.

Rewind two years or so and I was a nervous high school student flipping through an overwhelmingly huge stack of college pamphlets. I had been at the same small private school in Pasadena for nine years and the most exotic ocean I had swum in was in Waikiki Beach.

When I arrived at USC for my first week of college, I began to interact with the Environmental Studies Program for the first time. Each time, there was some mention of a scientific diving course in Guam and Palau, which I considered too good to be true, but had a hard time visualizing myself actually doing it.

However, when the time came to turn in applications, I decided to just take a chance, apply, and see what happened. Looking back, that moment turned out to be the best decision of my college career so far.

The 2012 group at Jellyfish Lake Palau. Photo by Katie Graves.

ENST-480: Integrated Ecosystem Management in Micronesia has allowed me to travel to islands I had not previously heard of and there dive in some of the top spots in the world. I have picked mangos with locals in Palau, gone on nighttime snorkels in Guam, and experienced entirely new cultures. But more importantly, I was able to participate in actual research by collecting data in Palau.

Over the course of three days, my class and I embarked on numerous scuba dives and snorkels to lay transects along a prescribed course and count the number of key species, fish or invertebrates, that crossed our path. The data we collected was part of a research project that would help establish the health of the coral ecosystems we were diving in.

Being a part of something bigger than me gave me a sense of pride when stepping into the waters of Palau. I consider the data I collected to be my small contribution to the preservation of the invaluable reefs that may be degraded or gone if we are not careful in the future.

I do not think I could ever have prepared myself for the vastness or beauty of the marine world that lay beneath the ocean surface. But I also did not expect how much this course taught me, beyond textbooks and class lectures. I have no doubt that the learning experiences I gained from this course will influence my actions and mindset for the rest of my college career and beyond.

Beyond the scientific knowledge I obtained, the course also provided the right amount of adventure and challenge. The four instructors that accompanied us on our trip provided me with insight and support. However, some of the biggest lessons I learned came from the older students on the trip. As a freshman (or rising sophomore), I was able to observe and learn from other more experienced students in my major. Never hesitant to offer advice as a mentor and friend, their personal college paths inspired and enlightened me.

Amidst all of the required General Education courses taken on campus, I had a hard time finding a fellow ENST major and rarely interacted with upperclassmen. The Guam and Palau course has exposed me to students with the same interests who I know will support me just as I will support them. I admire each and every student I met on the trip and have grown so grateful for the family that is the USC Environmental Studies Program.

Author photo by Stephen Holle.

When I first entered USC, I knew very little about the Environmental Studies Program. Over the past year, I have been able to interact with my professors on an individual basis and have seen how much they want me to succeed by the immense support they have provided.

Although I am only just completing my freshman year, the program has already provided me multiple invaluable opportunities. The Guam and Palau course has allowed me to imagine what my future may hold.

About the Author: Judith Fong has just completed her freshman year in the USC Dana and David Dornsife College of Letters, Arts and Sciences working towards a B.S. degree in Environmental Studies. She hopes her participation in scientific scuba diving will help open new opportunities to explore marine biology and field research.

Editor’s note: Scientific Research Diving at USC Dornsife is offered as part of an experiential summer program offered to undergraduate students of the USC Dana and David Dornsife College of Letters, Arts and Sciences. This course takes place on location at the USC Wrigley Marine Science Center on Catalina Island and throughout Micronesia. Students investigate important environmental issues such as ecologically sustainable development, fisheries management, protected-area planning and assessment, and human health issues. During the course of the program, the student team will dive and collect data to support conservation and management strategies to protect the fragile coral reefs of Guam and Palau in Micronesia.

Instructors for the course include Jim Haw, Director of the Environmental Studies Program in USC Dornsife, Assistant Professor of Environmental Studies David Ginsburg, SCUBA instructor and volunteer in the USC Scientific Diving Program Tom Carr and USC Dive Safety Officer Gerry Smith of the USC Wrigley Institute for Environmental Studies.

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