Fragilariopsis cylindrus Helmcke et Krieger

• Main Authors: Al-Handal, Adil Y., Torstensson, Anders, Wulff, Angela
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2022
• Subjects: Biodiversity; Taxonomy; Chromista; Ochrophyta; Bacillariophyceae; Bacillariales; Bacillariaceae; Fragilariopsis; Fragilariopsis cylindrus; Antarc*; Antarctica; King George Island; Sea ice
• Online Access: https://doi.org/10.5281/zenodo.11000241; http://treatment.plazi.org/id/03C487C54308737CFCCDFC5B76299AF2

Fragilariopsis cylindrus (Grunow ex Cleve) Helmcke et Krieger (Figures 91, 92, 115, 116) Literature: (Hasle 1965, p. 34, fig. 12:6–12; Snoeijs and Vilbaste 1994, p. 50, fig. 138; Witkowski et al. 2000, p. 360, pl. 213, figs. 8–14). Description: Length 5–11 µm, width 2–3 µm, striae 15–20 in 10 µm, fibulae 15–20 in 10 µm. Ecology and distribution: A common bipolar sea-ice diatom, particularly in summer and autumn (Kang and Fryxell 1992) but also found in brackish-water of the Baltic Sea, forming ribbon-like colonies (Snoeijs and Vilbaste 1994). Fragilariopsis cylindrus has been used as an indicator species for sea-ice movement in both polar regions (von Quillfeldt 2004). It was not observed in Potter Cove during the previous collection. Rare in the material examined. Published as part of Al-Handal, Adil Y., Torstensson, Anders & Wulff, Angela, 2022, Revisiting Potter Cove, King George Island, Antarctica, 12 years later: new observations of marine benthic diatoms, pp. 81-103 in Botanica Marina (Warsaw, Poland) (Warsaw, Poland) 65 (2) on page 95, DOI:10.1515/bot-2021-0066, http://zenodo.org/record/11000147