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Aphanizomenon slovenicum sp. nov. : morphological and ecologicalcharacters of a new cyanophyte/cyanobacterial species from LakeBled, Slovenia

Published online by Cambridge University Press:  15 March 2009

S. Rekar  and
F. Hindák
S. Rekar
Affiliation:
The Environmental Agency of the Republic of Slovenia, Monitoring Office, Water quality Section, Limnology department, Kidriceva cesta 10, SLO-4260 Bled, Slovenia.
F. Hindák
Affiliation:
Institute of Botany, Slovak Academy of Sciences, Dúbravská cesta 14, SK-84223 Bratislava, Slovakia.
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Abstract

The morphology and ecology of a†new species of the cyanophyte/cyanobacterial genus Aphanizomenon Morren ex Bornet et Flahault, A. slovenicum Rekar et Hindák, are described from Lake Bled, NW Slovenia. The species produced a heavy water bloom in May - December 1997 but disappeared during 1998. Macroscopic flakes of bundles of trichomes similar to A. flos-aquae (L.) Ralfs ex Bornet et Flahault formed in a layer between 10 - 20 m depth. They differed from A. flos-aquae by shorter and narrow short cylindrical to barrel-shaped cells, and by trichomes that sometimes consisted of morphologically different cell sections. Maximum abundance was found in August : 655 trichomes.m1-1. Heterocytes were occasionally present and akinetes have been observed only in laboratory cultures. The main characteristics of the investigated cultures of A. slovenicum and A. flos-aquae isolated from a fishpond at Ledava (NE Slovenia) are given.

Keywords

cyanophyta/cyanobacteriaaphanizomenon slovenicumnew speciestaxonomyecologysubalpine lakeswater bloomSloveniacyanophyta/cyanobacteriaaphanizomenon slovenicumespèce nouvelletaxonomieécologiefleur d'eaulacs subalpinsSlovénie
Type
Research Article
Information
Annales de Limnologie - International Journal of Limnology , Volume 38 , Issue 4 , December 2002 , pp. 271 - 285
Copyright
© Université Paul Sabatier, 2002

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