Antarctic Science



Papers—Life Sciences and Oceanography

The relationship between water chemistry and surface sediment diatom assemblages in maritime Antarctic lakes


V. J. Jones a1, S. Juggins a1 and J. C. Ellis-Evans a2
a1 Environmental Change Research Centre, Department of Geography, University College London, 26 Bedford Way, London WC1H 0AP, UK
a2 British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Road, Cambridge CB3 0ET, UK

Article author query
jones v   [PubMed][Google Scholar] 
juggins s   [PubMed][Google Scholar] 
ellis-evans j   [PubMed][Google Scholar] 

Abstract

Maritime Antarctic freshwater lakes and their catchments are inherently simple systems in an environment which is characterized by strong seasonality. Such lakes offer excellent opportunities to study the interaction of water chemistry and plant communities. The response of diatom species to environmental gradients was assessed by constructing a diatom and water chemistry dataset from 59 lakes at two locations (Livingston Island, South Shetland Islands and Signy Island, South Orkney Islands). Results indicate that diatom species abundance is predominately related to nutrient and salinity gradients. The dataset will be used to create transfer functions which can be applied to sediment core diatom assemblages to reconstruct historical patterns of lake chemistry.

(Received November 28 1992)
(Accepted March 26 1993)


Key Words: diatoms; training dataset; nutrients; salinity; multivariate analysis.


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