Microbial oceanographers Andy Juhl and Ajit Subramaniam are working with organic geochemist Beizhan Yan and physical oceanographer Andreas Thurnherr to understand the composition of the hydrocarbons, their transport, and impact on the microbial ecosystem of the Gulf of Mexico.
The NSF-funded Rolling Deck to Repository (R2R) program envisions the academic fleet as an integrated global observing system, with routine underway data and documentation flowing directly from res
This page contains information on the research activities in R. Sambrotto's Lab. at Lamont-Doherty. Its covers the people involved and the analytical work we do on the biogeochemistry of oceans and estuaries. It includes the analytical capabilities available to outside users as well as information and protocols for people working in the lab.
EarthView Explorer computer software was designed as supplemental material for teaching and learning in the Earth Sciences for students in grades 6-12.
Provides a suite of tools and services for free public access to marine geoscience research data acquired throughout the global oceans and adjoining continental margins.
Find, map and download marine geoscience and other data by ship, region, program, investigator, data and more.
| Name | Title | Fields of interest | |
|---|---|---|---|
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Raymond N. Sambrotto | Lamont Associate Research Professor | |
| Kyle Frischkorn | Postdoctoral Research Scientist | ||
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Sonya Dyhrman | Associate Professor | |
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Hugh Ducklow | Professor | Ecosystems ecology, marine and global biogeochemistry, microbial ecology |
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Solange Duhamel | Lamont Associate Research Professor | Role of microorganisms as agents of biogeochemical transformations, and the reciprocal role of nutrients availability, in particular phosphorus (P), on the distribution, growth and productivity of microplankton |
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Helga Gomes | Research Scientist | |
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Joaquim Goes | Lamont Research Professor | a) Marine phytoplankton physiology and productivity b) Climate change and its impact on ocean biota and biogeochemical processes c) Development of ocean color and other remote sensing algorithms and methods for studying ocean carbon cycling and air-s |
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O. Roger Anderson | Adjunct Senior Research Scientist | Physiological Ecology of Eukaryotic Microbes in aquatic and terrestrial environments |
| Andrew Juhl | Lamont Associate Research Professor | Plankton ecology, Phytoplankton growth and physiology, Zooplankton grazing, Harmful algae, Dinoflagellate blooms, Physical/biological interactions, Nutrient/microbial pollution of coastal waters, Sea-ice algae |
Scientists plumbing the depths of the central equatorial Pacific Ocean have found ancient sediments suggesting that one proposed way to mitigate climate warming—fertilizing the oceans with iron to produce more carbon-eating algae—may not necessarily work as envisioned.
In the water above natural oil seeps in the Gulf of Mexico, where oil and gas bubbles rise almost a mile to break at the surface, scientists have discovered something unusual: phytoplankton, tiny microbes at the base of the marine food chain, are thriving. The oil itself does not appear to help the phytoplankton, but the low concentration of oil found above natural seeps isn’t killing them, and turbulence from the rising oil and gas bubbles is bringing up deep-water nutrients that phytoplankton need to grow, according to a new study appearing in the latest issue of Nature Geoscience.
As excess carbon dioxide is absorbed into the oceans, it is starting to have profound effects on marine life, from oysters to tiny snails at the base of the food chain.
Tiny microbes called phytoplankton are churning away in the oceans, taking in carbon dioxide and producing the oxygen we breathe. Scientists recognize their value, but many questions remain about what will happen to their productivity as the oceans warm, carbon dioxide levels rise, and the nutrients they rely on become scarce. A new study explores those questions using a mix of techniques from genomics and oceanography and a newly created database of millions of phytoplankton RNA strands contributed by scientists from labs around the world.
A growing "dead zone" in the middle of the Arabian Sea has allowed plankton uniquely suited to low-oxygen water to take over the base of the food chain. Their rise to dominance over the last decade could be disastrous for the predator fish that sustain 120 million people living on the sea’s edge.
Smaller than a speck of dust, Emiliania huxleyi plays an outsized role in the world’s seas. Ranging from the polar oceans to the tropics, these free-floating photosynthetic algae remove carbon dioxide from the air, help supply the oxygen that we breathe, and form the base of marine food chains. When they proliferate, their massive turquoise blooms are visible from space.
A city effort to clean up polluted Newtown Creek by aerating the water to boost oxygen levels is having an unintended effect: it is releasing sewage bacteria and other particles into the air above the site, researchers say in a new study in the journal Environmental Science and Technology. The researchers found bacteria types in the air consistent with the sewage and oil pollution in the creek. The study is one of the first to establish a link between water pollution and air-quality, raising new questions about the health risks posed by dirty water.
With their vast resources and raw materials, the world’s oceans are one of the cornerstones of the quality of human life. According to World Bank figures, 350 million jobs are estimated to be linked to the oceans globally, and 1 billion people in developing countries depend on fish for their primary source of protein.
After less than a month in operation, a new NASA satellite has produced the first map showing how saltiness varies across the surface of the world’s oceans. Until now, salt measurements came only from ships, moorings and buoys floating at sea; NASA says its Aquarius satellite will capture in three years as much data as those earlier methods did in 125 years.
The world’s oceans are growing more acidic as carbon emissions from the modern world are absorbed by the sea. A new film, “A Sea Change,” explores what this changing chemistry means for fish and the one billion people who rely on them for food. This first-ever documentary about ocean acidification is told through the eyes of a retired history teacher who reads about the problem in a piece in The New Yorker and is inspired to find out more. His quest takes him to Alaska, California, Washington and Norway to talk with oceanographers, climatologists and others.
