Fottea 14(1): 91-100, 2014 | DOI: 10.5507/fot.2014.007

Staurosira longwanensis sp. nov., a new araphid diatom (Bacillariophyta) from Northeast China.

Patrick Rioual1, Eduardo A. Morales2, Guoqiang Chu1, Jingtai Han1, Dong Li1, Jiaqi Liu1, Qiang Liu1, Jens Mingram3, Luc Ector4
1 Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, PR China
2 Herbario Criptogámico, Universidad Católica Boliviana San Pablo, Calle M. Márquez esq. Plaza Jorge Trigo s/n Zona Tupuraya. P.O. Box 5381, Cochabamba, Bolivia
3 Helmholtz Centre Postdam GFZ German Research Centre for Geosciences, Section 5.2, Telegraphenberg, D-14473 Postdam, Germany
4 Public Research Centre - Gabriel Lippmann, Department of Environment and Agro-biotechnologies (EVA), Rue du Brill, 41, L-4422 Belvaux, Grand-Duchy of Luxembourg

Staurosira longwanensis sp. nov. is described from Sihailongwan maar lake, northeast China. The morphology of this new species is documented with light and scanning electron micrographs and discussed in comparison with several small species of Fragilariaceae. Staurosira longwanensis belongs in the genus
Staurosira since it shares many features with taxa currently ascribed to it such as the position and characteristics of the spines, the characteristics of the areolae and apical pore fields. Apart from the type locality, S. longwanensis also occurs in another volcanic lake in northeast China, with circumneutral and oligotrophic water. Diatom analysis of the long sedimentary record retrieved from Lake Sihailongwan indicates that S. longwanensis has been present at low relative abundances in this lake at least since the Late Pleistocene. 
 

Keywords: Araphid diatoms, Bacillariophyta, China, morphometric analysis, palaeolimnology, Staurosira longwanensis sp. nov.

Received: October 16, 2013; Accepted: December 13, 2013; Published: March 1, 2014  Show citation

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Rioual, P., Morales, E.A., Chu, G., Han, J., Li, D., Liu, J., ... Ector, L. (2014). Staurosira longwanensis sp. nov., a new araphid diatom (Bacillariophyta) from Northeast China. Fottea, 14(1), 91-100. doi: 10.5507/fot.2014.007
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