Howard J. Spero
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.
UCD Stable Isotope Laboratory
Spero publications: http://scholar.google.com/citations?user=wSK60cMAAAAJ
Spero, HJ, SM Eggins, AD Russell, L Vetter and M Kilburn (2015) Timing and mechanism for intratest Mg/Ca variability in a living planktic foraminifer. EARTH AND PLANETARY SCIENCE LETTERS. 409:32-42. DOI: 10.1016/j.epsl.2014.10.030
Waelbroeck, C, T Kiefer, T Dokken, MT Chen, HJ Spero, S Jung, M Weinelt, M Kucera and A Paul (2014) Constraints on surface seawater oxygen isotope change between the Last Glacial Maximum and the Late Holocene. QUATERNARY SCIENCE REVIEWS. 105(1 December 2014):102-111. DOI: 10.1016/j.quascirev.2014.09.020
Eerkens, JW, A DeGeorgey HJ Spero and C Descantes (2014) Seasonality of Late Prehistoric Clamming on San Francisco Bay: Oxygen Isotope Analyses of Macoma nasuta Shells from a Stege Mound, CA-CCO-297. CALIFORNIA ARCHAEOLOGY . 6(1):23-46.