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**Aulacoseira principissa** sp. nov., a new centric diatom species from the sub-Antarctic region
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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. | | |
| Language |
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English
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| Source (journal) |
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Phytotaxa. - Auckland, N.Z., 2009, currens | |
| Publication |
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Auckland, N.Z. : Magnolia Press, 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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