Jeffrey Krause

Researcher Jeffrey Krause at sea in the Santa Barbara Channel
Assistant Research Biologist, Marine Science Institute

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); they have a global distribution in both marine and freshwater environments and can occur in very high numerical abundances.

Diatoms are important because:

  • Their global contribution to primary production is similar to the rain forests
  • They are important players in the oceanic cycles of Carbon, Nitrogen, and Silicon
  • The sinking of diatom silica, and their associated organic matter, is a major component of the "Biological Pump"
  • The production and cycling of diatom silica plays a fundamental role in regulating the exchange of CO2 between the ocean and atmosphere

Research Area/s: 

Contact Information



(805) 893-8062

Office Location: 

3150 Marine Biotechnology Building

Lab Location: 

2007 Marine Biotechnology Building

Office Phone: 

(805) 893-7061

Mailing Address: 

UCSB Marine Science Institute Bldg 520 Rm 4002 Fl 4L Santa Barbara, CA 93106-6150 United States