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Contact ChristinaRiesselman

Office Marine Science: 310 Castle Street, room 150, Geology: room GN1
Tel Marine Science +64 3 479 5732, Geology +64 3 479 7505
Emailchristina.riesselman@otago.ac.nz

Academic qualifications

BA (University of Nebraska-Lincoln)
PhD (Stanford University)

Research interests

  • Cenozoic paleoceanography and paleoclimate
  • Antarctic climate evolution
  • Micropaleontology (diatoms)
  • Geochemical proxies of paleoenvironmental change

I am a paleoceanographer with a focus on Southern Ocean response to changing climate. My research uses stable isotope geochemistry and diatom micropaleontology in marine sediments to examine the evolution of the Antarctic cryosphere through the Cenozoic. In support of these aims, I also participate in collaborative investigations into the modern controls on phytoplankton community structure. This modern-process research underscores the role of biogenic marine sedimentation as a uniquely sensitive recorder of past conditions, both geochemically and from an assemblage-based perspective.

I am also a member of the Coastal People: Southern Skies collaboration that connects communities with world-leading, cross-discipline research to rebuild coastal ecosystems.
Coastal People: Southern Skies

Riesselman1
Examining the sediment-water interface aboard the RVIB Nathanial B. Palmer. Photo credit: R Stevens.

Courses

Postgraduate students

Jacob Anderson - Thesis Title (PhD): Determining Antarctica's terrestrial climate history from microbial populations in permafrost

Publications

Perkins, E. J., Gorman, A. R., Tidey, E. J., Wilson, G. S., Ohneiser, C., Moy, C. M., Riesselman, C. R., Gilmer, G., & Ross, B. S. (2020). High-resolution seismic imaging reveals infill history of a submerged Quaternary fjord system in the subantarctic Auckland Islands, New Zealand. Quaternary Research, 93(1), 255-266. doi: 10.1017/qua.2019.58

Ohneiser, C., Yoo, K.-C., Albot, O. B., Cortese, G., Riesselman, C., Lee, J. I., … Bollen, M., … Beltran, C., … Wilson, G. S. (2019). Magneto-biostratigraphic age models for Pleistocene sedimentary records from the Ross Sea. Global & Planetary Change, 176, 36-49. doi: 10.1016/j.gloplacha.2019.02.013

Wilson, D. J., Bertram, R. A., Needham, E. F., van der Flierdt, T., Welsh, K. J., McKay, R. M., … Riesselman, C. R., … Escutia, C. (2018). Ice loss from the East Antarctic Ice Sheet during late Pleistocene interglacials. Nature, 561, 383-386. doi: 10.1038/s41586-018-0501-8

Taylor-Silva, B. I., & Riesselman, C. R. (2018). Polar frontal migration in the warm late Pliocene: Diatom evidence from the Wilkes Land margin, East Antarctica. Paleoceanography & Paleoclimatology, 33(1), 76-92. doi: 10.1002/2017PA003225

Bertram, R. A., Wilson, D. J., van de Flierdt, T., McKay, R. M., Patterson, M. O., Jimenez-Espejo, F. J., … Duke, G. C., Taylor-Silva, B. I., & Riesselman, C. R. (2018). Pliocene deglacial event timelines and the biogeochemical response offshore Wilkes Subglacial Basin, East Antarctica. Earth & Planetary Science Letters, 494, 109-116. doi: 10.1016/j.epsl.2018.04.054

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