Reconstruction of lake-water salinity from fossil diatom assemblages in saline lakes of the Vestfold Hills, Antarctica ...
Polar lake environments provide an essentially undistubed ecosystem to research and their water chemistries are often the result of climatic influences throughout their histories. Salinity, in particular, has a clear relationship with changing precipitation and evaporation in polar lake environments...
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| Format: | Thesis |
| Language: | unknown |
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University Of Tasmania
2023
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| Online Access: | https://dx.doi.org/10.25959/23245208.v1 https://figshare.utas.edu.au/articles/thesis/Reconstruction_of_lake-water_salinity_from_fossil_diatom_assemblages_in_saline_lakes_of_the_Vestfold_Hills_Antarctica/23245208/1 |
| Summary: | Polar lake environments provide an essentially undistubed ecosystem to research and their water chemistries are often the result of climatic influences throughout their histories. Salinity, in particular, has a clear relationship with changing precipitation and evaporation in polar lake environments, thus changes in lakewater salinity can be related to the climatic regime of polar lakes basins. By exploring the relationship between diatom assemblages and limnological environmental variables in Antarctic saline lakes, fossil diatom assemblages enable palaeo-lake water variables in these lake ecosystems to be quantified. Canonical correspondence analysis of the relationship between surface sediment diatom assemblages and measured limnological variables in thirty-three coastal Antarctic lakes revealed that salinity accounted for a significant amount of the variation in the distribution of these diatom assemblages, revealing its value for limnological inference models in this coastal Antarctic region. A ... |
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