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No longer at LDEO: 
Adjunct Associate Research Scientist
Lamont-Doherty Earth Observatory
Biology and Paleo Environment
10 Marine Biology
61 Route 9W - PO Box 1000
(845) 365-8615
(845) 365-8150


Fields of interest: 
Biological Oceanography and Ocean Biogeochemistry

My field of research is biological and biogeochemical oceanography. I study primary productivity, photosynthetic efficiency and assemblages of phytoplankton in response to light, major nutrient and micronutrient (iron) availability in the ocean. Phytoplankton play a key role in the ocean carbon cycle and are therefore a critical area of study to understand the effects of global climate change. I have worked in a variety of ocean ecosystems including the Southern Ocean, the Western and Equatorial Pacific, the Sargasso Sea, the coastal California upwelling region, and others.

Some of my projects include:

  • Southern Ocean GAS Ex - CO2 Gas Exchange Experiment; Southern Ocean, Atlantic Sector ( details )
  • ON DEQUE - The control of photosynthetic quantum yield of phytoplankton by light intensity and diapycnal nutrient flux
  • WP2 - Prochlorococcus genetic and physiological diversity in the Western Pacific Warm Pool ( details )
  • EUCFe - Source of iron in the Equatorial Undercurrent ( details )
  • SOFeX - Southern Ocean mesoscale in situ iron addition experiments ( details )


List of degrees from highest to lowest:
Ph.D. Environment
Duke University, Nicholas School of the Environment and Earth Sciences
B.S. Biology with Chemistry Minor
East Carolina University

Selected Publications:

Photosynthetic maximum quantum yield increases are an essential component of the Southern Ocean phytoplankton response to iron Hiscock, M. R.; Lance, V. P.; Apprill, A. M.; Bidigare, R. R.; Johnson, Z. I.; Mitchell, B. G.; Smith, W. O.; Barber, R. T. Proceedings of the National Academy of Sciences of the United States of America Mar 25 Volume: 105 Issue: 12 p.: 4775-4780 (2008) DOI 10.1073/pnas.0705006105
Primary productivity, differential size fraction and pigment composition responses in two Southern Ocean in situ iron enrichments Lance, V. P.; Hiscock, M. R.; Hilting, A. K.; Stuebe, D. A.; Bidigare, R. R.; Smith, W. O.; Barber, R. T. Deep-Sea Research Part I-Oceanographic Research Papers May Volume: 54 Issue: 5 p.: 747-773 (2007) DOI 10.1016/j.dsr.2007.02.008
Particle export during the southern ocean iron experiment (SOFeX) Buesseler, K. O.; Andrews, J. E.; Pike, S. M.; Charette, M. A.; Goldson, L. E.; Brzezinski, M. A.; Lance, V. P. Limnology and Oceanography Jan Volume: 50 Issue: 1 p.: 311-327 (2005)
Southern ocean iron enrichment experiment: Carbon cycling in high- and low-Si waters Coale, K. H.; Johnson, K. S.; Chavez, F. P.; Buesseler, K. O.; Barber, R. T.; Brzezinski, M. A.; Cochlan, W. P.; Millero, F. J.; Falkowski, P. G.; Bauer, J. E.; Wanninkhof, R. H.; Kudela, R. M.; Altabet, M. A.; Hales, B. E.; Takahashi, T.; Lance, V. P. Science Apr 16 Volume: 304 Issue: 5669 p.: 408-414 (2004)