Chamaepinnularia salina (Bacillariophyta), a new diatom species from French mineral springs (Massif Central)

Abstract

During a survey done on the mineral springs in the French Massif Central region, a new Chamaepinnularia species (Bacillariophyceae) was found and is hereby described: Chamaepinnularia salina Beauger, C.E.Wetzel, Allain & Ector sp. nov. This new small species, with valves linear with almost parallel margins, is formally described using light and scanning electron microscopy. The central area is rectangular, forming a rather broad fascia and the raphe is straight, filiform located on an elevated sternum. Virgae between striae are developed. The ecological preferences of Chamaepinnularia salina are presented. This species is mainly in mineral springs with Na-K-HCO3 water type.

Diatom DNA metabarcoding to assess the effect of natural radioactivity in mineral springs on ASV of benthic diatom communities

“…Also, some diatoms species have large ecological range and inhabited environments with different ecological statue like freshwater, springs and brackish water. Only Navicula sanctamargaritae is typical to mineral springs (Beauger et al, 2020). Thus, the observations made in the mineral springs show that some species are well distributed in the mineral springs, but their abundance varies according to the local environmental conditions.…”

Biodiversity and Environmental Factors Structuring Diatom Assemblages of Mineral Saline Springs in the French Massif Central

“…Chamaepinnularia salina was present in seven of the springs studied, such as Sail (where it was described), Bard 2, Adrienne, and Vallée Couze d'Ardes. This species is mostly found in mineral springs of Na-K-HCO 3 water type [38].…”

“…Thus, these studies did not address the inventory of the biodiversity of these algae. As a consequence, since the survey initiated in 2014, new taxa have been recently discovered in these springs, such as Navicula sanctamargaritae Beauger [14], Sellaphora labernardierei Beauger, C. E. Wetzel & Ector [15], Craticula lecohui Beauger, C. E. Wetzel & Ector [16], Pseudostaurosira bardii Beauger, C. E. Wetzel & Ector [37], and Chamaepinnularia salina Beauger, C. E. Wetzel, Allain & Ector [38]. A new genus called Fontina Beauger, C. E. Wetzel & Ector in [39] was also observed and described in a mineral spring in that area.…”

“…A new genus called Fontina Beauger, C. E. Wetzel & Ector in [39] was also observed and described in a mineral spring in that area. Moreover, preliminary research, focusing on diatom biodiversity from 17 springs in this area, was performed between November 2014 and April 2015 [40], and has provided some preliminary information on the ecology of some species encountered in these springs.…”

Molecular phylogenetics coupled with morphological analyses of Arctic and Antarctic strains place Chamaepinnularia (Bacillariophyta) within the Sellaphoraceae

“…in Lange-Bertalot & Genkal 1999;Metzeltin et al 2009;Potapova 2014). Chamaepinnularia species have been found in a broad spectrum of habitats, such as aerial environments, growing as epiphytes on mosses ( Van de Vijver et al 2002, 2004Wetzel et al 2013), springs (Werum & Lange-Bertalot 2004;Beauger et al 2022a), hot saline springs (Wetzel & Ector 2016), freshwater lakes (Lange-Bertalot & Metzeltin 1996;Cantonati & Lange-Bertalot 2009) and marine benthic habitats (Witkowski et al 2000).…”