Raymond N. Sambrotto

Lamont Associate Research Professor
Lamont-Doherty Earth Observatory
Biology and Paleo Environment
Sambrotto_head_shot.jpg
11 Marine Biology
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
Phone: 
(845) 365-8402
Fax: 
(845) 365-8150

My research is in the area of biological and chemical aquatic science and focuses on microbial life in the ocean and coastal waters.  A large part of my work pertains to the microbial photoautotrophs (phytoplankton) of the ocean.  Phytoplankton are responsible for almost half of the total photosynthesis on the planet.  Due to the fact that phytoplankton are the base of the marine food web, phytoplankton ecology contributes to the analysis of the production of fish, birds and mammals in the sea.  Plankton also play a large role in the carbon cycle and other biogeochemical cycles in the sea.   Phytoplankton growth redistributes material from the surface of the ocean to depth and exchanges material with bacteria and ocean water throughout the water column and sediments.  These are critical steps that  determine ocean nutrient levels as well as help to define the ocean's role in the adsorption of carbon dioxide from the atmosphere.  I typically work in large, oceanographic,  field programs to investigate how ocean production systems respond to changes caused by climatic variation, particularly in polar regions.

Lamont Projects: 
Selected Publications: 
Biogeochemistry: Ocean biomes blended, Sambrotto, R. N. , Nature, 30 Sept. 2010, Volume 467, p.538–539, (2010), 10.1038/467538a

Compound-specific carbon isotopes from Earth?s largest flood basalt province directly link eruptions to the end-Triassic mass extinction Proceedings of the National Academy of Sciences, Whiteside, JH; Olsen, PE; Eglinton, T; Brookfield, ME; Sambrotto, RN , Proceedings of the National Academy of Sciences, Volume 107, Issue 15, p.6721-6725, (2010)

Physical forcing and nutrient conditions associated with patterns of Chl a and phytoplankton productivity in the southeastern Bering Sea during summer, Sambrotto, R. N.; Mordy, C.; Zeeman, S. I.; Stabeno, P. J.; Macklin, S. A. , Deep-Sea Research Part Ii-Topical Studies in Oceanography, Aug, Volume 55, Issue 16-17, p.1745-1760, (2008), DOI 10.1016/j.dsr2.2008.03.003

Net community production in terms of C, N, P and Si in the Antarctic Circumpolar Current and its influence on regional water mass characteristics, Green, S. E.; Sambrotto, R. N. , Deep-Sea Research Part I-Oceanographic Research Papers, Jan, Volume 53, Issue 1, p.111-135, (2006), DOI 10.1016/j.dsr.2005.04.008

Plankton community structure and export of C, N, P and Si in the Antarctic Circumpolar Current, Green, S. E.; Sambrotto, R. N. , Deep-Sea Research Part Ii-Topical Studies in Oceanography, Volume 53, Issue 5-7, p.620-643, (2006), DOI 10.1016/j.dsr2.2006.01.022

Ratios of Si, C and N uptake by microplankton in the Southern Ocean, Brzezinski, M. A.; Dickson, M. L.; Nelson, D. M.; Sambrotto, R. , Deep-Sea Research Part Ii-Topical Studies in Oceanography, Volume 50, Issue 3-4, p.619-633, (2003), Pii S0967-0645(02)00587-8

A role for ocean biota in tropical intraseasonal atmospheric variability (vol 30, art no 1460, 2003), Gildor, H.; Sobel, A. H.; Cane, M. A.; Sambrotto, R. N. , Geophysical Research Letters, Jun 21, Volume 30, Issue 12, p.-, (2003), Doi 10.1029/2003gl017803

Effect of feeding on the carbon and oxygen isotopic composition in the tissues and skeleton of the zooxanthellate coral Stylophora pistillata, Reynaud, S.; Ferrier-Pages, C.; Sambrotto, R.; Juillet-Leclerc, A.; Jaubert, J.; Gattuso, J. P. , Marine Ecology-Progress Series, Volume 238, p.81-89, (2002)

Nitrogen production in the northern Arabian Sea during the Spring Intermonsoon and Southwest Monsoon seasons, Sambrotto, R. N. , Deep-Sea Research Part Ii-Topical Studies in Oceanography, Volume 48, Issue 6-7, p.1173-1198, (2001)

Coupling of biological and physical regimes across the Antarctic Polar Front as reflected by nitrogen production and recycling, Sambrotto, R. N.; Mace, B. J. , Deep-Sea Research Part Ii-Topical Studies in Oceanography, Volume 47, Issue 15-16, p.3339-3367, (2000)