Dr. Jeffrey Krause

Dr. Jeffrey Krause


Associate Professor, University of South Alabama
Senior Marine Scientist, Dauphin Island Sea Lab
Ph.D. 2008, College of Oceanic & Atmospheric Sciences, Oregon State University

Emphasis: Phytoplankton ecology, physiology and marine biogeochemistry


Research Interests

I am interested in how phytoplankton (microscopic algae) cycle nutrients within the upper ocean where light penetrates.  My research focuses on the ecology of diatoms, a group of phytoplankton.  Diatoms have a characteristic shell made of amorphous silica (SiO2-nH2O), which is more dense than the seawater they live (i.e. diatoms sink).  They have a global distribution in both marine and freshwater environments and can occur in very high numerical abundances. 
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Current Funded Research Projects:

“Alabama Center for Ecological Resilience (ACER): Impacts of the DWH accident on phytoplankton-microzooplankton resiliency.” Gulf of Mexico Research Initiative Consortium. Jan. 2015 – Dec. 2017. $707,466 (includes subward to Rutgers University). PIs: Krause, J.W. (DISL) and Thamatrakoln, K. (Rutgers).

“Group-Specific Diatom Silica Production in a Coastal Upwelling System.” National Science Foundation: Biological Oceanography. Apr. 2012 – Mar. 2016. $453,487. PI: Krause, J.W.

“Understanding the role of picocyanobacteria in the marine silicate cycle.” National Science Foundation: Biological Oceanography. PIs: Krause, J.W. (DISL) and Brzezinski, M.A. (UCSB). Jan. 2012 – Dec. 2015. $256,128. Part of Collaborative Research Project with Baines, S.B. & Collier, J.L. (Stony Brook University), Twining, B.S. (Bigelow Laboratory for Ocean Sciences)


Baumann, M.S., Moran, S.B., Lomas, M.W., Kelly, R.P., Bell, D.W., Krause, J.W. In press. Diatom control of the autotrophic community and particle export in the eastern Bering Sea during the recent cold years (2008-2010). Journal of Marine Research.

Krause, J.W., Brzezinski, M.A., Goericke, R., Landry, M.R., Ohman, M. D., Stukel, M. R., Taylor, A.G. 2015. Variability in diatom contributions to biomass, organic matter production and export across a frontal gradient in the California Current Ecosystem. Journal of Geophysical Research Oceans 120, 1032–1047, doi:10.1002/2014JC010472.

Wilson, C., Villareal, T.A., Brzezinski, M.A., Krause, J.W., Shcherbina, A.Y. 2013. Chlorophyll bloom development and the subtropical front in the North Pacific. Journal of Geophysical Research Oceans 118 (3), 1473-1488. doi: 10.1002/jgrc.20143

Krause, J.W., Brzezinski, M.A., Siegel, D.A., Thunell, R.C. 2013. Biogenic silica standing stock and export in the Santa Barbara Channel ecosystem. Journal of Geophysical Research Oceans 118 (2), 736-749. doi:10.1029/2012JC008070

Krause, J.W., Brzezinski, M.A., Villareal, T.A., Wilson, C. 2013. Biogenic silica cycling during summer phytoplankton blooms in the North Pacific subtropical gyre. Deep-Sea Research I 71, 49-60. doi: 10.1016/j.dsr.2012.09.002

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Biological Oceanography (Graduate, University of South Alabama)   
Physiology and Ecology of Marine Microalgae (Graduate, University of South Alabama)   
Introduction to Oceanography  (Undergraduate/Graduate, Dauphin Island Sea Lab)  
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