taxonID	type	description	language	source
03F46C3C1B2DFFE5BBC4132BFB2CFB94.taxon	materials_examined	Type: — FRANCE. Lac de Guéry, Auvergne, William Smith sample Lac de Guéry-River Mortes, leg. W. Smith, coll. date 26. vi. 1854., elev. 4066 ft (holotype slide BR- 4847 = Fig. 5, isotype slide 447 in Collection University of Antwerp, Belgium). Registration: — http: // phycobank. org / 104621	en	Vijver, Bart Van De (2024): Gomphonema beaugerianum, a new Gomphonema species (Bacillariophyta) found in a historic William Smith sample from the Auvergne (France). Phytotaxa 653 (3): 290-296, DOI: 10.11646/phytotaxa.653.3.8, URL: http://dx.doi.org/10.11646/phytotaxa.653.3.8
03F46C3C1B2DFFE5BBC4132BFB2CFB94.taxon	etymology	Etymology: — The species is named after my colleague and friend Dr Aude Beauger (GEOLAB UMR 6042, Maison des Sciences de l’Homme, France) in honour of her extensive work on the diatoms of the Auvergne and Central Massif region.	en	Vijver, Bart Van De (2024): Gomphonema beaugerianum, a new Gomphonema species (Bacillariophyta) found in a historic William Smith sample from the Auvergne (France). Phytotaxa 653 (3): 290-296, DOI: 10.11646/phytotaxa.653.3.8, URL: http://dx.doi.org/10.11646/phytotaxa.653.3.8
03F46C3C1B2DFFE5BBC4132BFB2CFB94.taxon	biology_ecology	Ecology & associated diatom flora: — The sample was taken from Lac de Guéry, a mountain lake in the Monts Dore area of the French Massif Central. The lake with a total surface of 25 ha, has a volcanic origin. Rioual (2002) analysed in 2002 more than 20 lakes in the Auvergne region including Lac de Guéry and measured a pH of 6.9, a conductivity of 33 µS / cm, and low levels of total phosphorus (12 mg / l) and nitrate (196 µg / l). These are of course recent physico-chemical and most likely do not entirely reflect the situation in 1854 when William Smith collected the sample. The diatom flora is quite diverse and dominated by Staurosira neoproducta (Lange-Bertalot 1993: 48) Chudaev & Gololobova (2012: 74), Navicula radiosa Kützing (1844: 91), Fragilariforma undata (W. Smith 1855: 7) Heudre et al. (2017: 264), F. bicapitata (A. Mayer 1917: 21) D. M. Williams & Round (1988: 265), several Aulacoseira taxa, Pseudostaurosira cf. brevistriata (Grunow in Van Heurck 1885: 157) D. M. Williams & Round (1988: 276), Gomphonema coronatum Ehrenberg (1841: 211), Cymbella cymbiformis C. Agardh (1830: 10), Cymbopleura naviculiformis (Auerswald ex Heiberg 1863: 108) Krammer (2003: 56) and Tabellaria cf. flocculosa (Roth 1797: 192) Kützing (1844: 127). This diatom flora points to oligo- to weakly mesotrophic, occasionally weakly acid, conditions with a low to moderate electrolyte content on siliceous substrates (Lange-Bertalot et al. 2017).	en	Vijver, Bart Van De (2024): Gomphonema beaugerianum, a new Gomphonema species (Bacillariophyta) found in a historic William Smith sample from the Auvergne (France). Phytotaxa 653 (3): 290-296, DOI: 10.11646/phytotaxa.653.3.8, URL: http://dx.doi.org/10.11646/phytotaxa.653.3.8
