Articles | Volume 23, issue 11
https://doi.org/10.5194/bg-23-3807-2026
https://doi.org/10.5194/bg-23-3807-2026
Research article
 | 
11 Jun 2026
Research article |  | 11 Jun 2026

Diatom–environment relationships and limnological variability: an updated quantitative tool for palaeoclimatology on sub-Antarctic Macquarie Island

Caitlin A. Selfe, Karina Meredith, Liza McDonough, Justine Shaw, Stephen J. Roberts, and Krystyna M. Saunders

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Cited articles

Andersen, T., Carstensen, J., Hernandez-Garcia, E., and Duarte, C. M.: Ecological thresholds and regime shifts: approaches to identification, Trends Ecol. Evol., 24, 49–57, https://doi.org/10.1016/j.tree.2008.07.014, 2009. 
Birks, H., Frey, D., and Deevey, E.: Numerical tools in palaeolimnology-progress, potentialities, and problems, J. Paleolimnol., 20, 307–332, 1998. 
Birks, H. J. B.: Overview of numerical methods in palaeolimnology, in: Tracking environmental change using Lake sediments: Data handling and numerical techniques, Springer, 19–92, https://doi.org/10.1007/978-94-007-2745-8_2, 2012. 
BOM: Climate statistics for Australian locations, Australian Bureau of Meterology, https://www.bom.gov.au/climate/averages/tables/cw_300004.shtml (last access: October 2025). 
Buckney, R. T. and Tyler, P. A.: Reconnaissance limnology of Sub-Antarctic islands. II. Additional features of the chemistry of Macquarie Island lakes and tarns, Mar. Freshw. Res., 25, 89–95, https://doi.org/10.1071/MF9740089, 1974. 
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This study presents an updated diatom–conductivity model to reconstruct past Southern Hemisphere westerly wind strength from lake sediments on sub-Antarctic Macquarie Island. We analysed diatom–environment relationships using seasonal and multi-year water chemistry and isotope data. Diatoms respond strongly to changes in lake water conductivity driven by wind-blown sea spray. The model provides a reliable tool for tracking long-term wind patterns and understanding past and future climate change.
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