Articles | Volume 43, issue 1
https://doi.org/10.5194/jm-43-139-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/jm-43-139-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Two new clavate Fragilariopsis and one new Rouxia diatom species with biostratigraphic and paleoenvironmental applications for the Pliocene-Pleistocene, East Antarctica
Grace Duke
CORRESPONDING AUTHOR
Department of Geology, University of Otago, Dunedin, 9016, New Zealand
Josie Frazer
Department of Geology, University of Otago, Dunedin, 9016, New Zealand
Briar Taylor-Silva
Department of Geology, University of Otago, Dunedin, 9016, New Zealand
Christina Riesselman
Department of Geology, University of Otago, Dunedin, 9016, New Zealand
Department of Marine Science, University of Otago, Dunedin, 9016, New Zealand
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Xavier Crosta, Karen E. Kohfeld, Helen C. Bostock, Matthew Chadwick, Alice Du Vivier, Oliver Esper, Johan Etourneau, Jacob Jones, Amy Leventer, Juliane Müller, Rachael H. Rhodes, Claire S. Allen, Pooja Ghadi, Nele Lamping, Carina B. Lange, Kelly-Anne Lawler, David Lund, Alice Marzocchi, Katrin J. Meissner, Laurie Menviel, Abhilash Nair, Molly Patterson, Jennifer Pike, Joseph G. Prebble, Christina Riesselman, Henrik Sadatzki, Louise C. Sime, Sunil K. Shukla, Lena Thöle, Maria-Elena Vorrath, Wenshen Xiao, and Jiao Yang
Clim. Past, 18, 1729–1756, https://doi.org/10.5194/cp-18-1729-2022, https://doi.org/10.5194/cp-18-1729-2022, 2022
Short summary
Short summary
Despite its importance in the global climate, our knowledge of Antarctic sea-ice changes throughout the last glacial–interglacial cycle is extremely limited. As part of the Cycles of Sea Ice Dynamics in the Earth system (C-SIDE) Working Group, we review marine- and ice-core-based sea-ice proxies to provide insights into their applicability and limitations. By compiling published records, we provide information on Antarctic sea-ice dynamics over the past 130 000 years.
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Short summary
Diatoms are dust-sized algae commonly found in the upper 100 m of the Southern Ocean. In this paper, we describe three new species found in sediments west of the Ross Sea, East Antarctica, aged about 3--2 Ma: Fragilariopsis clava, Fragilariopsis armandae, and Rouxia raggattensis. These species may be useful for determining the age of sediments and past environmental conditions at other locations around the Southern Ocean.
Diatoms are dust-sized algae commonly found in the upper 100 m of the Southern Ocean. In this...