Article 7
SEM survey and taxonomic position of small-sized Achnanthidium (Bacillariophyceae) from coral sands of Réunion Island (Western Indian Ocean)
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C. Riaux-Gobin1,2*, A. Witkowski3, P. Compère4
1 Laboratoire d’Océanographie Biologique, CNRS/UPMC Paris 6, UMR 7621, FR-66650 Banyuls-sur-Mer, France
2 USR 3278 CNRS-EPHE, CRIOBE-Université de Perpignan, FR-66086 Perpignan, France
3 University of Szczecin, Institute of Marine Sciences, Department of Palaeoceanology, PL-71415 Szczecin, Poland
4 Jardin Botanique National de Belgique, B-1860 Meise, Belgique
* Corresponding author:
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ABSTRACT. – Coral sands and short crop macrophytes from reef lagoons off Réunion Island and Rodrigues (Indian Ocean) possess a high diversity of small-sized diatoms pertaining to the Achnanthales, with some taxa similar to Achnanthidium sensu lato (Round et al.1990). In this study, five taxa, bearing close resemblance to established taxa but with distinctive features are described and illustrated using scanning electron microscopy. The five new taxa are named Achnanthidium pseudodelicatissimum, A. flexuistriatum, A. glyphos, A. pseudochamaepinnularia and A. scalariforme. The nomenclatural position of each taxon is discussed.
