Howard Spero on boat with ocean horizon in background

Howard Spero off the coast of Catalina Island.

Howard J. Spero

UC Davis Faculty Research Lecturer, 2014
Ph.D., UC Santa Barbara (1986)
Paleoclimate and Paleoenvironmental ChangeGeochemistry 

Research focuses on the biological and environmental parameters that affect the stable isotope and trace metal geochemistry of the shells of recent and fossil organisms; paleoclimatology, marine micropaleontology, and paleoceanography. An ongoing multi-year field research program involving undergraduate and graduate students has been studying living planktonic foraminifera in the Southern California Borderland and the Caribbean. The results of this study are being used to interpret fossil foraminifera stable isotope data from Indian and Atlantic Ocean deep sea cores in order to reconstruct paleoenvironmental sea surface temperatures, nutrient levels and CO2 concentrations during the Pleistocene.
(530) 752-3307

UCD Stable Isotope Laboratory
Spero publications: 

Recent Publications

LaVigne, M, TM Hill, HJ Spero and TP Guilderson (2011) Bamboo coral Ba/Ca: Calibration of a new deep ocean refractory nutrient proxy. EARTH AND PLANETARY SCIENCE LETTERS. 312(3-4):506-515. DOI: 10.1016/j.epsl.2011.10.013

Allen, KA, B Höenisch, SM Eggins, J Yu, HJ Spero and H Elderfield (2011) Controls on boron incorporation in cultured tests of the planktic foraminifer Orbulina universa. EARTH AND PLANETARY SCIENCE LETTERS. 309(3-4):291-301. DOI: 10.1016/j.epsl.2011.07.010

Höenisch, B, KA Allen, AD Russell, SM Eggins, J Bijma, HJ Spero, DW Lea and J Yu (2011) Planktic foraminifers as recorders of seawater Ba/Ca. MARINE MICROPALEONTOLOGY. 79(1-2):52-57. DOI: 10.1016/j.marmicro.2011.01.003

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