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Title
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**Aulacoseira principissa** sp. nov., a new centric diatom species from the sub-Antarctic region
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Author
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Abstract
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| A new centric diatom, Aulacoseira principissa sp. nov., is described from the sub-Antarctic region. The morphology of the species is illustrated using detailed light and scanning electron microscopy observations. Its main discriminating features include the presence of typical bifurcating spines, a single rimoportula, a typical valve heterovalvy with spineless separation valves and a variable striation pattern on the discus. The new species is compared to related species belonging to the complex of Aulacoseira distans. Aulacoseira principissa has a broad geographical distribution ranging from the sub-Antarctic islands in the southern Indian Ocean to South Georgia in the southern Atlantic Ocean. It is commonly found in slightly acidic, oligotrophic pools with low specific conductance values. |
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Language
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English
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Source (journal)
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Phytotaxa. - Auckland, N.Z., 2009, currens
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Publication
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Auckland, N.Z.
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Magnolia Press
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2012
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ISSN
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1179-3155
[print]
1179-3163
[online]
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Volume/pages
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52
(2012)
, p. 33-42
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ISI
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000303603100001
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