Additional information on the distribution and ecology of the recently described diatom species Geissleria gereckei

The main objective of this paper is to report new information about the distribution and ecology of a recently described diatom species, . The opportunity for updating the information on the distribution and ecology of the species was provided by the finding of well-developed populations on the lith...

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Bibliographic Details
Published in:Oceanological and hydrobiological studies 2017-03, Vol.46 (1), p.18-23
Main Authors: Vidakovic, Danijela, Cantonati, Marco, Mogna, Marcella, Jakovljević, Olga, Šovran, Sanja, Lazović, Vladimir, Stojanović, Katarina, Đorđević, Jelena, Krizmanić, Jelena
Format: Article
Language:English
Subjects:
Aquatic plants
Aquifers
Bryophytes
Carbonates
Catchment area
Catchments
Desiccation
diatom
Diatoms
Distribution
Ecological distribution
Ecological niches
Ecology
Ecosystems
Electron microscopes
Freshwater
Geissleria gereckei
Geographical distribution
Geography
Microhabitat
Microhabitats
National parks
Niches
Oceanography
Plankton
Rivers
Scanning electron microscopy
Serbia
south-eastern Alps
Species
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Summary:The main objective of this paper is to report new information about the distribution and ecology of a recently described diatom species, . The opportunity for updating the information on the distribution and ecology of the species was provided by the finding of well-developed populations on the lithic material and bryophytes in the Raška and Mlava rivers (Serbia). For several years after the first description, has been known only from the type locality and from another spring in the Dolomiti Bellunesi National Park (the south-eastern Alps). After accurate LM and SEM observations, we provide evidence for the occurrence of the species also in the two above-mentioned rivers in Serbia, as well as in the south-western and south-eastern Alps. After an extensive literature search, it appears that the species is known with certainty only from these sites. Our observations and details from the literature suggest that the species is able to occupy a much broader ecological niche than the very-specific one observed at the time of discovery. The two main determinants for the species’ occurrence appear to be the carbonate nature of the catchments or aquifers, and the ability of the species to be competitive in habitats or microhabitats exposed to seasonal desiccation.
ISSN:1897-3191
1730-413X
1897-3191
DOI:10.1515/ohs-2017-0002