IEDA
Project Information
Collaborative Research: Linking Modern Benthic Communities and Taphonomic Processes to the Stratigraphic Record of Antarctic Cores
Description/Abstract
This project answers a simple question: why are there so few fossils in sediment cores from Antarctica?s continental shelf? Antarctica?s benthos are as biologically rich as those of the tropics. Shell-secreting organisms should have left a trail throughout geologic time, but have not. This trail is particularly important because these organisms record regional climate in ways that are critical to interpreting the global climate record. This study uses field experiments and targeted observations of modern benthic systems to examine the biases inflicted by fossil preservation. By examining a spectrum of ice-affected habitats, this project provides paleoenvironmental insights into carbonate preservation, sedimentation rates, and burial processes; and will provide new approaches to reconstructing the Cenozoic history of Antarctica. Broader impacts include graduate and undergraduate research and education, development of undergraduate curricula to link art and science, K12 outreach, public outreach via the web, and societal relevance through improved understanding of records of global climate change.
Personnel
Person Role
Walker, Sally Investigator
Bowser, Samuel Investigator
Miller, Molly Investigator
Furbish, David Co-Investigator
Funding
Antarctic Earth Sciences Award # 0739583
Antarctic Earth Sciences Award # 0739512
Antarctic Earth Sciences Award # 0739496
Data Management Plan
None in the Database
Product Level:
1 (processed data)
Publications
  1. Gardner, E. E., Walker, S. E., & Gardner, L. I. (2016). Palaeoclimate, environmental factors, and bird body size: A multivariable analysis of avian fossil preservation. Earth-Science Reviews, 162, 177–197. (doi:10.1016/j.earscirev.2016.07.001)
  2. Perez-Huerta, A, Walker, S. E., Cappelli, C. (2020) In Situ Geochemical Analysis of Organics in Growth Lines of Antarctic Scallop Shells: Implications for Sclerochronology. Minerals 10, 529. (doi:10.3390/min10060529)
  3. Bhattachan, A., Wang, L., Miller, M. F., Licht, K. J., & D’Odorico, P. (2015). Antarctica’s Dry Valleys: A potential source of soluble iron to the Southern Ocean? Geophysical Research Letters, 42(6), 1912–1918. (doi:10.1002/2015gl063419)
  4. Cronin KE, Walker SE, Bowser SS (2021) Striae in the Antarctic scallop Adamussium colbecki provide environmental insights but not reliable age increments. Polar Biol 44:729–738. https://doi.org/10.1007/s00300-021-02830-7 (doi:10.1007/s00300-021-02830-7)
Platforms and Instruments

This project has been viewed 13 times since May 2019 (based on unique date-IP combinations)