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| | 1. MIT/WHOI
Joint Program graduate student Kelton McMahon
(front) and WHOI research assistant Leah
Houghton enter a large underwater cavern on a Red Sea coral reef off Alith, Saudi
Arabia in search of adult snapper fish. By analyzing
fish otoliths, or ear bones, McMahon can discern where fish spent their
formative juvenile years and help identify critical areas that should be
protected to prevent the demise of coral reef fish populations.
(Photo by Michael Berumen, Woods Hole Oceanographic Institution) | | 2. Summer
student Lauren Watka from the University
of Massachusetts, Dartmouth holds a petri dish of fish eggs
from mummichogs, Fundulus heteroclitus. Working with post-doctoral fellow Matthew Jenny in WHOI
biologist John
Stegeman's laboratory, she assisted with in vitro fertilization of eggs
from fish collected from a reference ("clean") site, and a Superfund
site (New Bedford Harbor) contaminated with toxic polychlorinated biphenyls
(PCBs). Part of Watka's project was to compare how fish embryos from the
two sites developed and expressed genes for proteins called cytochrome P 450s
that help detoxify PCBs.
(Photo by Tom Kleindinst, Woods Hole Oceanographic Institution) | | 3. MIT/WHOI graduate student Desirée
Plata prepares a flame torch to seal samples for carbon
isotope measurements in her lab experiments. Her research has shown that
differently manufactured carbon
nanotubes have distinctive chemical characteristics, making it more
difficult to track them in the environment.
(Photo by Tom Kleindinst, Woods Hole Oceanographic Institution) | | 4. MIT/WHOI
Joint Program student Louie
Wurch (top) and chemistry research assistant Justin Ossolinski
recover a conductivity-temperature-depth
(CTD) rosette from the Sargasso Sea in
April 2008. Marine chemist Ben
Van Mooy led the interdisciplinary research cruise on the Oceanus, which
included scientists working on the biogeochemistry of the region;
specifically, how phosphorus and other nutrients affect and limit the growth of
phytoplankton in the ocean.
(Photo by Mar Nieto Cid, Woods Hole Oceanographic Institution) | | 5. New graduate students in the MIT/WHOI Joint Program gather
alongside ship's crew on the deck of the Corwith Cramer on June 24,
2008. They would later set sail on a week-long cruise to develop their skills
in ocean sampling and seafaring. The graduate school also sends them out to
sea to bond with the classmates that they will study with, work alongside, and
commiserate with for the next four to six years. The annual cruise was newly dedicated
to the memory of Jake
Peirson, longtime associate dean and backbone of the Joint Program.
(Photo by Jayne Doucette, Woods Hole Oceanographic Institution) | | 6. WHOI postdoctoral
scholar Tim
Shanahan and MIT/WHOI
student Kim Popendorf—both from the Department of Marine Chemistry and
Geochemistry—work to filter plankton from water samples in the main lab of
the research vessel Oceanus in April
2008. On an expedition led by marine chemist Ben Van Mooy, researchers
examined the communities of plankton that they found in the North Atlantic's Sargasso Sea, as well as the water chemistry
(particularly nutrients) that promoted or inhibited the growth of various
species. The cruise was the first ever for Shanahan.
(Photo by Ben van Mooy, Woods Hole Oceanographic Institution) | | 7. Graduate students
Chris Murphy (in the
water), Rogelio
Morales-Garcia (holding the instrument), and Clayton Kunz
work to calibrate a camera system in the new test tank in WHOI's Coastal
Research Laboratory. Working with engineer Hanu
Singh, the group is examining the fundamentals of camera
calibration—particularly for color correction and distortion—as the traditional
techniques for land-based photo applications are not analytically correct
underwater.
((Photo by Tom Kleindinst, Woods Hole Oceanographic Institution)) | | 8. Undergraduate
Andrew Delman (Yale University), scientist Andrew Ashton (blue cap, WHOI
Geology and Geophysics Department) and Guest Student Nick Magliocca (red cap, Duke University)
trek through the sand in the Waquoit Bay National Estuarine Research Reserve on
Cape Cod, Mass.
in July, 2008. Using Ground-Penetrating Radar (GPR) they searched for
below-the-surface deposits left by past storms, to investigate how barrier
beaches respond to changes in storminess and sea level. As a WHOI Summer
Student Fellow, Delman spent the summer collecting and analyzing data and
developing a model of long-term barrier-beach evolution.
(Photo by Tom Kleindinst, Woods Hole Oceanographic Institution) | | 9. WHOI postdoctoral fellow Mar Nieto-Cid adds
seawater to a filtration system in the main laboratory of the research vessel Oceanus during a
cruise in the North Atlantic in April
2008. The system separates low molecular weight organic matter out of the
water so that Nieto-Cid and WHOI chemist Dan Repeta can study how
the characteristics of dissolved organic matter affect how microbes consume,
degrade, and cycle it. "This is a little understood but large piece of the
marine carbon cycle," said Repeta, "and we are investigating what microbes
are responsible, and how the chemical composition of the carbon affects
microbial activity and diversity."
(Photo by Alexander Dorsk, Woods Hole Oceanographic Institution) | | 10. Postdoctoral researcher Justin
Ries holds a temperate-water coral—one of many shell-forming marine animals
he grew under elevated carbon dioxide levels, which increases the seawater's
acidity. Working with Anne Cohen
and Dan McCorkle of
the Geology and Geophysics
Department, he conducted the experiment to measure the effects of high-CO2
levels on living shelled marine animals. Many coral species may be vulnerable
to increasing CO2 in the atmosphere, because more-acidic seawater
can make it difficult for them to construct their calcium carbonate skeletons.
(Photo by Tom Kleindinst, Woods Hole Oceanographic Institution) | | 11. MIT/WHOI
Joint Program student Stephanie
Waterman holds the “beta boat,” a unique instrument she built with physical
oceanographer John Whitehead
and engineer Keith
Bradley for her experiments on how ocean currents may form. Essentially a
free-floating plunger, the ‘boat’s’ motor drives a disc up and down, generating
waves in a rotating
tank that mimics Earth’s ocean. Waterman did her experiments in the geophysical fluid dynamics
laboratory at WHOI, which boasts a long history of studying theoretical
aspects of ocean motion.
(Photo by Tom Kleindinst, Woods Hole Oceanographic Institution) | | 12. WHOI postdoctoral fellow Nicole
Keller (Geology & Geophysics)
takes a break from hiking the Barva volcano in Costa Rica in June 2008 to
surround herself with the monstrous leaf of the Sombrillo de Pobre ("poor
man's umbrella", or Gunnera insignis). Keller and WHOI volcanologist Alison Shaw hiked the
volcano to collect samples ash and rock samples for a study of the sulfur
cycle in volcanic systems.
(Photo by Alison Shaw, Woods Hole Oceanographic Institution) | | 13. MIT/WHOI
Joint Program graduate students and their instructors take a break from hiking
for a group photo at the base of Arenal Volcano in Costa Rica during a June 2008 field
study tour. Each annual WHOI Geodynamics Seminar Series concludes with a trip
to critical geological locations related to the program's themes. The 2008
series focused on convergent plate boundary systems, which host a range of
processes, including planetary-scale volatile and geochemical cycling,
tectonics, seismicity, and volcanism.
(Photo by Jay Barr, Massachusetts Institute of Technology) | | 14. MIT/WHOI
Joint Program student Stephanie Owens isn't on a jungle gym—she's checking
specialized pumps used to filter water collected at various depths in the ocean
and extract trace amounts of iron from the samples. Owens and WHOI scientist
Pheobe Lam used the pumps, made by McLane Labs, on a research cruise near Africa in September 2008. They wanted to test the
hypothesis that northeast Africa provides significant amounts of iron, a
nutrient necessary for the ocean's food web, to the eastern tropical Atlantic.
(Woods Hole Oceanographic Institution) | | 15. MIT/WHOI
Joint Program student Kate Buckman stands in front of the submersible Alvin, holding the iconic
animal from undersea hydrothermal vents: a giant tubeworm (Riftia pachyptila.)
The fast-growing worms have fascinated biologists since their discovery as part
of an ecosystem—from bacteria to fishes—that depends on chemical energy from the
earth, not light from the sun. Buckman, a student in biologist Tim Shank’s lab,
studies the genetics and ecology of hydrothermal vent fishes. On this cruise in
June 2008, using Alvin, she collected animals for genetic analysis from 2,500m
(1.5 mile)-deep vent sites at 9 degrees North off the west coast of Mexico.
(Photo by Lance Wills, Woods Hole Oceanographic Institution) | | 16. Jorge
Barbosa, an undergraduate at the State University of New York School of
Environmental Science and Forestry, spent summer 2008 as a WHOI Summer Student
Fellow. Working in the laboratory of Carl Lamborg, he analyzed the mercury
levels of animals that live near hydrothermal vents—the first time such
measurements have been made. Mercury in the ocean is passed up the food chain
as the toxic compound methylmercury, becoming concentrated in top predators
such as tuna and swordfish.
(Photo by Tom Kleindinst, Woods Hole Oceanographic Institution) | | 17. While on
board R/V Roger Revelle at the WHOI dock in July 2008, Summer Student Fellow
Kaitlyn McCartney (MIT) adjusted a sampler designed by WHOI Post-doctoral
Scholar Chip Breier (left, Applied Ocean Physics and Engineering Department.)
The new "SUPR" sampler (Suspended Particulate Rosette) collects
particles within intensely hot, high-pressure fluid plumes rising from
hydrothermal vents—part of efforts to analyze deep-sea compounds in place.
McCartney, sponsored by engineer Sheri White, designed the frame to mount SUPR
on the ROV Jason (background), and participated in a cruise to collect
particles from mid-Atlantic black smoker vents.
(Photo by Tom Kleindinst, Woods Hole Oceanographic Institution) | | 18. The small
white object on MIT/WHOI Joint Program student Kelton McMahon's finger is a
fish's otolith, or ear bone. Otoliths are composed of layers secreted by a fish
every day of its life, incorporating trace impurities from water the fish swims
through—which provides a chemical record of where the fish has traveled.
McMahon, a student in biologist Simon Thorrold's lab, studies the connections
between adult coral reef fish and their juvenile nurseries in mangroves, in
study areas including the Liquid Jungle Lab in Panama
and coral reefs in the Red Sea.
(Photo by Tom Kleindinst, Woods Hole Oceanographic Institution) | | 19. Undergraduate
student Tobin Hammer prepares a colorful nutrient solution for culturing
micro-organisms in WHOI microbiologist Stefan Sievert's microbial ecology
laboratory. Hammer, a 2008 Summer Student Fellow from the University
of California, San
Diego, worked on assessing the diversity of bacteria in deep-sea
sediments from hydrothermal vents in Guaymas
Basin in the Gulf of California, Mexico.
His project involved aspects of microbial ecology, cultivating anaerobic
(without oxygen) bacteria, and molecular techniques, and he found a high
diversity of bacteria in the Guaymas sediments.
(Photo by Tom Kleindinst, Woods Hole Oceanographic Institution) | | 20. MIT/WHOI
Joint Program graduate student Christine Mingione
filters plankton samples from Waquoit
Bay in search of
shellfish larvae, which are no bigger than a fine grain of sand. Back at the
lab in the Biology Department,
she will count the larvae under a microscope and image them using polarized
light. Mingione is working with WHOI biologist Scott Gallager and
Chris Weidman, director of research at the nearby Waquoit Bay National Estuarine
Research Reserve, to fill in the blanks between
the larval and adult stages of shellfish, such as scallops. Such fundamental
missing information is essential for efforts to sustain and restore natural
populations.
(Photo by Tom Kleindinst, Woods Hole Oceanographic Institution) | | 21. Students
Nicole Trenhom (in cap) and Zion Klos used ground-penetrating radar this summer
in a Cape Cod kettle pond to look for signs of
former shorelines deposited during ancient droughts. They worked with WHOI
geologist Jeff Donnelly, who studies these types of "natural
archives" to reconstruct past environmental conditions.
(Photo by Tom Kleindinst, Woods Hole Oceanographic Institution) | | 22. MIT/WHOI Joint
Program student Evelyn
Mervine paused to take in the beauty of Arenal Volcano during a
June 2008 field study tour in Costa
Rica. The pyroclastic flow from Arenal
— the country’s most continuously active volcano — is also known as a nuée
ardent, which means "glowing cloud.” The field trip wrapped up the spring WHOI Geodynamics Seminar Series,
a semester of weekly seminars given by scientists invited from many research
institutions on cutting-edge research on a particular earth sciences topic.
(Photo by Einat Lev, Massachusetts Institute of Technology) | | 23. MIT/WHOI
Joint Program graduate students Annette Hynes, Elizabeth
Orchard, and Phoebe
Dreux Chappell make up the trio known as “Team Tricho.” Working in the microbial biogeochemistry group
at WHOI, the team investigates
critical marine bacteria called Trichodesmium. Trichodesmium are cyanobacteria that fix
nitrogen in nutrient-poor oceans. By studying the different species of
Trichodesmium and how the bacteria obtain and use nutrients, the trio hopes to
get a more detailed and global view of the ocean nitrogen cycle.
(Photo by Tom Kleindinst, Woods Hole Oceanographic Institution) | | 24. Joint
Program student Fern
Gibbons scoops thin slices of mud from a long sediment core taken from the
sea floor. Rinsing the mud samples through a sieve releases tiny fossil shells
of organisms that lived in the ocean, died, and drifted down to the bottom.
Gibbons analyzes the shells' chemistry for clues to the temperature of the
ocean when they lived and when monsoons happened in the past—part of ongoing paleoceanographic
research at WHOI.
(Photo by Tom Kleindinst, Woods Hole Oceanographic Institution) | | 25. Holding up a culture plate, Joint Program student Laura Hmelo checks the
growth of bacterial colonies. Hmelo is studying a phenomenon called bacterial
"quorum sensing"— how marine bacteria found in slimy coatings on
hard surfaces (biofilms) use chemical signals to communicate with each other.
This communication tells the bacteria when they reach large numbers and enables
them to do more together than they could individually.
(Photo by Tom Kleindinst, Woods Hole Oceanographic Institution) | Last updated: August 5, 2009 |