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Article

Temporal Evolution of Diatoms in a Temporary Pond Situated in the Massif du Sancy Mountains (Massif Central, France) and Description of a New Pinnularia Species

1
GEOLAB, Université Clermont Auvergne, CNRS, F-63000 Clermont-Ferrand, France
2
Environmental Research and Innovation Department (ERIN), Luxembourg Institute of Science and Technology (LIST), 41 rue du Brill, L–4422 Belvaux, Luxembourg
3
Research Department, Meise Botanic Garden, Nieuwelaan 38, B-1860 Meise, Belgium
4
ECOBE, Department of Biology, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp, Belgium
*
Author to whom correspondence should be addressed.
Diversity 2020, 12(10), 367; https://doi.org/10.3390/d12100367
Received: 20 August 2020 / Revised: 15 September 2020 / Accepted: 21 September 2020 / Published: 24 September 2020
(This article belongs to the Special Issue Taxonomy, Ecology and Biogeography of Diatoms)
A floristic survey was performed on a temporary pond, “Laqui du Seignavoux”, situated in the Mont-Dore massif of the French Massif Central, between 2017 and 2019. Except in 2017, each year, we performed four sampling campaigns from April/May to December. Water samples and diatoms were collected. The temporary pond evolved from a poorly mineralized ecosystem due to snow, inducing oligotrophic and oligosaprobic water, well oxygenated in spring, to a more mineralized, less oxygenated, eutrophic–hypereutrophic, and polysaprobic environment in summer. This change in abiotic conditions was found to be linked to the presence of cattle, beginning in May, that trample and excrete in the pond, leading to higher ammonium and nitrate concentrations. During this period, the dominant species were Pinnularia sp., Nitzschia palea, and Nitzschia palea var. tenuirostris. In spring and winter, different species of Eunotia dominated the community such as Eunotia pseudogroenlandica. Finally, light microscopy (LM) and scanning electron microscopy (SEM) observations on a new species of the genus Pinnularia from the temporary pond are presented and the ecological preferences are discussed. View Full-Text
Keywords: diatom communities; epipelic and epiphytic diatoms; mountain habitat; temporary pond; new species diatom communities; epipelic and epiphytic diatoms; mountain habitat; temporary pond; new species
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MDPI and ACS Style

Beauger, A.; Allain, E.; Voldoire, O.; Wetzel, C.E.; Ector, L.; Van de Vijver, B. Temporal Evolution of Diatoms in a Temporary Pond Situated in the Massif du Sancy Mountains (Massif Central, France) and Description of a New Pinnularia Species. Diversity 2020, 12, 367. https://doi.org/10.3390/d12100367

AMA Style

Beauger A, Allain E, Voldoire O, Wetzel CE, Ector L, Van de Vijver B. Temporal Evolution of Diatoms in a Temporary Pond Situated in the Massif du Sancy Mountains (Massif Central, France) and Description of a New Pinnularia Species. Diversity. 2020; 12(10):367. https://doi.org/10.3390/d12100367

Chicago/Turabian Style

Beauger, Aude, Elisabeth Allain, Olivier Voldoire, Carlos E. Wetzel, Luc Ector, and Bart Van de Vijver. 2020. "Temporal Evolution of Diatoms in a Temporary Pond Situated in the Massif du Sancy Mountains (Massif Central, France) and Description of a New Pinnularia Species" Diversity 12, no. 10: 367. https://doi.org/10.3390/d12100367

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