Research:
 

Current and Past Research:

Howard J. Spero

Ann Russell

Tessa M. Hill

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Howard J. Spero  

Current Research:

Past Research:

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Ann Russell

Current Research:

My research focuses on developing and applying trace metals and stable isotopes in biogenic calcite as proxies of ocean pH and temperature. My ultimate goal is to quantify changes in ocean carbonate chemistry and explore the linkages between these changes and atmospheric carbon dioxide concentration, ocean circulation, and climate change. I'm particulary interested in how metals (especially U, Mg, and Sr) are incorporated into calcite and aragonite, and how environmental conditions in the water column and in the sediment influence the amount of these metals incorporated into marine animals.

 

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Tessa M. Hill

Current Research:

Recent (late Quaternary to modern) marine environmental change, utilizing the geochemistry of microfossils and corals to determine rates and magnitude of climate change, the response and adaptation of species to environmental change, the role of methane hydrate in climate change and marine geological processes, and the relationships between climate in marine and terrestrial environments. Stable Isotopes δ18O, δ13C, δ15N, trace elements (Mg/Ca, Sr/Ca), radiocarbon, and foraminiferal species assemblages are used as proxies for temperature and geochemical changes. Interest span geological timescales (orbital, millennial, decadel), and focus on the oceanic response to climate change and associated influences on species abundances, carbon cycling, oxygenation, ocean circulation and the methane hydrate reservoir.

For more information on my ongoing research, please visit:

http://www.bml.ucdavis.edu/facresearch/hill.html

 

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