Freshwater diatoms on sub-Antarctic Macquarie Island: an ecological survey of 14 lakes

A survey of the diatom (Bacillariophyceae) populations in 14 lakes and ponds on sub-Antarctic Macquarie Island identified 102 species from 34 genera, including species considered endemic to the sub-Antarctic region. Multivariate analysis of the diatom communities divided the lakes into two broad gro...

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Bibliographic Details
Published in:Papers and Proceedings of the Royal Society of Tasmania
Main Author: McBride, TP
Format: Article in Journal/Newspaper
Language:English
Published: 2009
Subjects:
Royal Society of Tasmania
RST
Van Diemens Land
natural history
science
ecology
taxonomy
botany
zoology
geology
geography
papers & proceedings
Australia
UTAS Library
Antarctic
Antarc*
Macquarie Island
Online Access:https://eprints.utas.edu.au/13156/
https://eprints.utas.edu.au/13156/4/2009_McBride_freshwater_diatoms.pdf
Description
Summary:A survey of the diatom (Bacillariophyceae) populations in 14 lakes and ponds on sub-Antarctic Macquarie Island identified 102 species from 34 genera, including species considered endemic to the sub-Antarctic region. Multivariate analysis of the diatom communities divided the lakes into two broad groups; oligotrophic plateau lakes dominated by species including Bmchysira exilis, Fragilaria capucina var. gracilis, Psammothidium abundans, Ps. confosum and Ps. confusum var. atomoides, and lowland peat-based lakes dominated by species including Fragilaria pulchella, Planothidium lanceolatum and Pl. quadripunctatum. Factors relating to lake elevation rather than water pH or conductivity appeared to have most influence on the lake diatom communities.

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