Fottea 2017, 17(1):57-64 | DOI: 10.5507/fot.2016.021

Biogeography and morphology of a poorly known Sellaphora species

Éva Ács1,2*, Carlos E. Wetzel3, Krisztina Buczkó4, Keve T. Kiss1, Katalin Nagy5, Zsuzsa Trábert1, Angéla Földi2, Virág Pozderka6, Petra Werner7, David Heudre8, Luc Ector3
1 MTA Centre for Ecological Research, Danube Research Institute, 1113 Budapest, Karolina út 29, Hungary; *Corresponding author e-mail: acs.eva@okologia.mta.hu
2 Sustainable Ecosystems Group, MTA Centre for Ecological Research, Klebelsberg Kuno u. 3, H-8237, Hungary
3 Environmental Research and Innovation Department (ERIN), Luxembourg Institute of Science and Technology (LIST), 41 rue du Brill, L-4422 Belvaux, Luxembourg
4 Hungarian Natural History Museum, Department of Botany, 1088 Budapest, Baross street 13, Hungary
5 North Hungarian Inspectorate for Environmental Protection & Nature Conservation authority, 3530 Miskolc,Mindszent tér 4, Hungary
6 ELTE PhD School of Environmental Sciences, 1117 Budapest, Pázmány Péter sétány 1/A, Hungary
7 Diatoms as Bioindicators, Grainauer Str. 8, 10777 Berlin, Germany
8 Direction Régionale de l'Environnement, de l'Aménagement et du Logement (DREAL) Grand Est, 2 rue Augustin Fresnel, CS 57071 Metz cedex 03, France

Specimens of a very small diatom were found in a dead oxbow of Tisza River (Hungary), in Eula River (Germany) and Parroy Pond (France). After SEM studies we identified all of them as Eolimna archibaldii J.C. Taylor et Lange-Bert., which is currently regarded as endemic species to South Africa. Furthermore, the results of Principal Components Analysis of morphometric characters clearly demonstrated an overlap between the type material and European populations. Therefore this diatom cannot be considered endemic to South Africa. Moreover, E. archibaldii and a very similar species, E. becaresii are transferred to the genus Sellaphora. Our results confirm the benefit of SEM for verifying the identity of small-sized diatoms, especially for routine monitoring, and allow more precise ecological assessment.

Keywords: biomonitoring, endemism, Eolimna, new combination, small diatoms, type material, Water Framework Directive

Received: February 1, 2016; Accepted: August 15, 2016; Prepublished online: February 28, 2017; Published: April 1, 2017  Show citation

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Ács, É., Wetzel, C.E., Buczkó, K., Kiss, K.T., Nagy, K., Trábert, Z., ... Ector, L. (2017). Biogeography and morphology of a poorly known Sellaphora species. Fottea, 17(1), 57-64. doi: 10.5507/fot.2016.021
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