Pleurosigma strigosum W. Smith, 1852

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 : 95

Pleurosigma strigosum W. Smith ( Figure 84 )

Literature: (Cardinal et al. 1986, p. 187, figs. 70, 72; Hendey 1964, p. 246, pl. 36, fig. 7; Sterrenburg 2003, p. 159, figs. 1– 4, 22–25).

Description: Length 145–260 µm, width 18–30 µm, transverse striae 20–24 in 10 µm.

Ecology and distribution: A widely distributed marine species, also found in estuaries. Previously recorded from Fuego district in south Antarctica ( Frenguelli 1943) and from the sub-Arctic (Cardinal et al. 1986). It has not previously been observed in Potter Cove but was found in large numbers in the present samples.

Figures

Figures 79–92: Marine benthic diatoms in Potter Cove, King George Island, Antarctica, summer 2015. (79) Gyrosigma arcuatum. (80) Gyrosigma fasciola. (81) Gyrosigma cf. obscurum. (82) Pleurosigma eudon var. kerguelensis. (83) Pleurosigm diversestriatum. (84) Pleurosigma strigosum. (85) Amphora gourdonii. (86) Amphora marina. (87, 88) Amphora sp. 1. (89) Amphora sp. 2. (90) Cylindrotheca closterium. (91, 92) Fragilariopsis cylindrus.