TABLE 1.

Morphological and ecological characteristics of eight different diatom strains and identification method (IM) marked with G (genetical) or M (morphological); ^* marks only genus level.

Isolate	Light microscopy image	SEM image	Size	Ecology	IM
Actinocyclus octonarius, Ehrenberg (1837)			Diameter: 89.04 – 99.77 μm Areolae: 6 – 8 in 10 μm	Pelagic2, solitary2, cosmopolitan in marine plankton and coastal zone sediments5	M and G*
Melosira moniliformis, (O. F.Müller) C. Agardh, 1824			Diameter: 35.64 – 46.91 μm Striae: 10 – 12 in 10 μm	Widespread in brackish and marine coastal waters5	M andG
Halamphora sp. 1, Kützing, 1844			Length and width: < 5 μm	Cosmopolitan3	G*
Halamphora sp. 2, Kützing, 1844			Length and width: < 5 μm	Cosmopolitan3	M
Navicula perminuta, Grunow in van Heurck, 1880			Length: 5.96 – 8.53 μm Width: 2.08 –3.56 μm Striae: 14 – 20 in 10 μm Areolae: 33 in 10 μm	Cosmopolitan1,3, locally abundant in brackish zones of rivers and along the coast3,6	M andG
Navicula phyllepta, Kützing, 1844			Length: 15.09 – 18.06 μm Width: 4.49 – 6.73 μm Striae: 14 – 20 in 10 μm Areolae: ca. 45 in 10 μm	Epipelic2, solitary2, motile2, brackish water of coastal regions6, cosmopolitan3	M and G
Nitzschia dubiiformis, Hustedt, 1939			Length: 37.5 – 49.31 μm Width: 3.75 – 6.16 μm Striae: ca. 40 in 10 μm Fibulae: 12 –18 in 10 μm	Epipelic and epilithic2, solitary2, motile2, cosmopolitan at marine coasts4	M
Nitzschia pusilla, Grunow, 1862			Length: 9.83 – 10.31 μm Width: 2.43 – 3.67 μm Striae: 43 – 55 in 10 μm Fibulae: 14 - 20 in 10 μm	Epipelic2, solitary2, motile2, cosmopolitan6,4	M and G

Light microscopic images show the color of the living diatoms and scanning electron microscope (SEM) images show the typical shapes of the frustules. ¹Snoeijs and Vilbaste (1994); ²Snoeijs and Potapova (1995); ³Krammer and Lange-Bertalot (2007); ⁴Krammer and Lange-Bertalot (2010); ⁵Lange-Bertalot (2000); ⁶Lange-Bertalot (2013).