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  • New Foraminifera-Based Proxies to Trace Changes to the Organic and Inorganic Carbon System Since the Last Glacial Maximum.
Title: New Foraminifera-Based Proxies to Trace Changes to the Organic and Inorganic Carbon System Since the Last Glacial Maximum.
The production of carbon and export to deep ocean sediments is linked to carbon partitioning between the ocean and atmosphere and is a key driver of climate change over the glacial-interglacial transition. Yet conflicting reconstructions create barriers to understanding changes to the carbon system over this important climate transition. Production reconstructions conflict in part because commonly used production proxies may be subject to water column and seafloor diagenetic alterations that overprint primary oceanographic signals. In addition, reconstructions of deep ocean carbonate chemistry are complicated by the variable ways that dissolution/preservation affects the proxy. This dissertation explores the utility of new proxies recorded in the shells of planktic foraminifera that have the potential to reconstruct parameters of the carbon system and can be carefully assessed for signs of diagenesis. Proxy developments and reconstructions are made using foraminifera from equatorial Pacific Ocean sediments that span a gradient in surface ocean carbon production and deep ocean carbon preservation.  more » « less
Award ID(s):
1737165
PAR ID:
10574141
Author(s) / Creator(s):
Publisher / Repository:
Oregon State University
Date Published:
Format(s):
Medium: X
Institution:
Oregon State University
Sponsoring Org:
National Science Foundation
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