Entomoneis paludosa (W. Smith) Reimer, 1975

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, Botanica Marina (Warsaw, Poland) 65 (2), pp. 81-103 : 98

Entomoneis paludosa (W. Smith) Reimer ( Figures 104 , 117 )

Literature: (Tatenda et al. 2015, p. 12, figs. 21–34; Witkowski et al. 2000, p. 199, pl. 109, figs. 26, 27, pl. 173, fig. 8).

Description: Length 68–91 µm, width 14–18 µm, striae 20– 24 in 10 µm.

Remarks: A species with variable valve outline particularly in the shape and angle of the junction (swelling) between valve face and the keel.

Ecology and distribution: This is a widespread brackish-water species, found even in rivers with high salt content. In Potter Cove, it was one of the common species that was found in all samples examined. It has been reported as a sea-ice diatom from the Arctic (Brown et al. 2014).

Figures

Figures 93–106: Marine benthic diatoms in Potter Cove, King George Island, Antarctica in summer 2015. (93) Nitzschia angularis. (94, 95) Nitzschia australis. (96) Nitzschia mitchelliana. (97) Nitzschia cf. gelida. (98) Nitzschia hybrida. (99) Nitzschia cf. obtusa. (100) Nitzschia sigma. (101) Nitzschia sp. (102) Entomoneis gigantea. (103) Entomoneis kjellmanii. (104) Entomoneis paludosa. (105) Surirella fastuosa. (106) Surirella sp.

Figures 113–118: SEM images of the marine benthic diatoms in Potter Cove, King George Island, Antarctica, summer 2015. (113, 114) Cocconeis orbicularis, external and internal faces of sternum valve. (115, 116) Fragilariopsis cylindrus, internal valve sides. (117) Entomoneis paludosa. (118) Nitzschia australis.