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27 results for “monoraphid”
Figs 86–109 in Four new monoraphid diatom species (Bacillariophyta, Achnanthaceae) from the Maritime Antarctic Region
Figs 86–109. Psammothidium superpapilio Kopalová, Zidarova & Van de Vijver sp. nov. Light and scanning electron micrographs of the type population on Byers Peninsula (Livingston Island). 86–95. LM views of rapheless valves. 96–105. LM views of raphe valves. 106. SEM external view of an entire raphe valve. 107. SEM internal view of an entire raphe valve. 108. SEM external view of an entire rapheless valve. 109. SEM internal view of an entire rapheless valve. Scale bars represent 10 µm.
Figs 58–85 in Four new monoraphid diatom species (Bacillariophyta, Achnanthaceae) from the Maritime Antarctic Region
Figs 58–85. Psammothidium confusoneglectum Kopalová, Zidarova & Van de Vijver sp. nov. Light and scanning electron micrographs of the type population on Byers Peninsula (Livingston Island). 58–70. LM views of raphe valves. 71–82. LM views of rapheless valves. 83. SEM external view of an entire raphe valve. 84. SEM external view of an entire rapheless valve. 85. SEM internal view of an entire rapheless valve. Scale bars represent 10 µm.
Figs 1–13 in Four new monoraphid diatom species (Bacillariophyta, Achnanthaceae) from the Maritime Antarctic Region
Figs 1–13. Achnanthes kohleriana Kopalová, Zidarova & Van de Vijver sp. nov. Light micrographs of the type population from Deception Island (South Shetland Islands, Antarctica). 1–16. LM views of raphe valves. 7–12. LM views of rapheless valves. 13. LM view of a girdle view. Scale bar represents 10 µm.
Figs 25–57 in Four new monoraphid diatom species (Bacillariophyta, Achnanthaceae) from the Maritime Antarctic Region
Figs 25–57. Planothidium wetzelectorianum Kopalová, Zidarova & Van de Vijver sp. nov. Light and scanning electron micrographs of the type population in Monolith Lake (James Ross Island). 25. LM view of a girdle view. 26–38. LM views of raphe valves. 39–52. LM views of rapheless valves. 53. SEM external view of an entire raphe valve. 54. SEM external detail of the areolae. 55. SEM internal view of the raphe and the striae. Note the hymenes on the areolae. 56. SEM external view of an entire rapheless valve. 57. SEM internal view of an entire rapheless valve. Scale bars represent 10 µm for Figs 25–52, 1 µm for Figs 53–57.
Figs 20–24 in Four new monoraphid diatom species (Bacillariophyta, Achnanthaceae) from the Maritime Antarctic Region
Figs 20–24. Achnanthes kohleriana Kopalová, Zidarova & Van de Vijver sp. nov. Scanning electron micrographs of the type population from Deception Island (South Shetland Islands, Antarctica). 20. SEM girdle view of an entire frustule. 21. SEM external view of a raphe valve. 22. SEM external detail of the areolae with the typical cribrate structure. 23. SEM external detail of the apex with the typical terminal orbiculus. 24. SEM internal view of an entire rapheless valve. Arrows show the rapheless sternum. Scale bars represent 10 µm for Figs 20, 21 & 24, 1 µm for Fig. 22 and 5 µm for Fig. 23.
FIGURES 1–18 in Planothidium sheathii a new monoraphid diatom species from rivers in California, USA
FIGURES 1–18. Planothidium sheathii LM views. Figs 1, 2, 5–9, 11–18 are SV. Figs 3, 4, 10 are RV. The same valve is presented at different focal plane to show the cavum hood aperture on figures 5 and 6, 11 and 12, 13 and 14, 15 and 16, 17 and 18. Figs 8, 9 and 10 are the same frustule. Arrows show cavum hood aperture borders fusion with neighboring virga on SV, arrowheads show more distant central shortened striae on RV. Figs 1–16 from the type locality San Joaquin River. Fig. 7 represents the holotype. Figs 17, 18 from Merced River, California, USA. All scale bars: 5 μm.
FIGURES 25–29. Planothidium sheathii SEM views. Fig. 25 in Planothidium sheathii a new monoraphid diatom species from rivers in California, USA
FIGURES 25–29. Planothidium sheathii SEM views. Fig. 25. Internal view of RV areolae. Figs 26, 27. Detail of cavum aperture. Note the boarders of the aperture attached to neighbor virgae. Fig. 28. External view of SV periphery and mantle. Striae 5–6 seriate, interrupted at valve mantle junction. Note the separated groups of 8–13 rounded areolae, bordered by 2 elongated areolae on mantle in oblique position to each areola group (arrows). Fig. 29. External view of RV periphery and mantle. Striae 5–6 seriate, interrupted at valve mantle junction. Note the separated groups of 7 rounded areolae on mantle (arrows). All figures from the type locality San Joaquin River, California, USA. All scale bars: 1 μm.
FIGURES 19–24. Planothidium sheathii SEM views. Figs 19, 20 in Planothidium sheathii a new monoraphid diatom species from rivers in California, USA
FIGURES 19–24. Planothidium sheathii SEM views. Figs 19, 20. External SV view. Fig. 21. Internal SV view with cavum. Figs 22, 23. External RV view. Note the more distant central shortened striae on secondary side (arrowheads). Fig. 24. Internal RV view. All figures from the type locality San Joaquin River, California, USA. All scale bars: 5 μm.
FIGURES 108–111, 113–125 in Gliwiczia gen. nov. a new monoraphid diatom genus from Lake Baikal with a description of four species new for science
FIGURES 108–111, 113–125: Gliwiczia calcar comb. nov. Figs 108–111, 113–123: Figs 108–109: Valve view of rapheless valves from type material. Fig. 110. Original drawing of Achnanthes calcar from Cleve (1891). Fig. 111. Drawing from Cleve (1891) that he noted as possible belonging to raphe valve of Achnathes calcar. Fig. 112. Raphe valves abundant in type material comparable with fig. 111 and belonging to Cavinula spp. Figs 113–120. Valve view of rapheless valves of Gliwiczia cf. calcar comb. nov. from Hoton Nur lake, Mongolia. Figs 121, 122. Valve view of rapheless valves of Gliwiczia cf. calcar comb. nov. from Lake Dalnee, Kamchatka. Fig. 123. Valve view of raphe valves of Gliwiczia cf. calcar comb. nov. from Lake Dalnee, Kamchatka. Figs 124, 125. Internal view of rapheless valves of Gliwiczia cf. calcar comb. nov. from Lake Dalnee, Kamchatka. (108, 109, 112–123: LM; 110, 111: drawings; 124,125: SEM). Scale bars: 10 µm.
FIGURES 67–88 in Gliwiczia gen. nov. a new monoraphid diatom genus from Lake Baikal with a description of four species new for science
FIGURES 67–88: Gliwiczia latarea sp. nov. Figs 67–88: Figs 67–78: Valve view of rapheless valves. Fig. 67: arrow indicates presence of cavum in sternum valve. Figs 79–83: Valve view of raphe valves. Fig. 79: arrow indicates presence of cavum in raphe valve. Fig. 84. Internal view if raphe valve note presence of cavum. Figs 85, 87, 88: Internal valve view of rapheless valves, note presence of striae in central part opposite cavum. Fig. 86. Internal view of valve part with cavum (67–78: LM; 84–88: SEM). Scale bar: 10 µm.
FIGURES 63–66 in Gliwiczia gen. nov. a new monoraphid diatom genus from Lake Baikal with a description of four species new for science
FIGURES 63–66: Gliwiczia tenuis sp. nov. Figs 63–66: Fig. 63–64: Internal view of rapheless valves note shorter striae in central part of valve opposite cavum. Fig. 65. Internal view of raphe valve note presence of cavum. Fig. 66: External view of raphe valve. It is questionable whether this valve belongs to G. tenuis sp. nov. (SEM).
FIGURES 37–42 in Gliwiczia gen. nov. a new monoraphid diatom genus from Lake Baikal with a description of four species new for science
FIGURES 37–42: Gliwiczia skvortzowii sp. nov. Figs 37–42: Figs 37–40: Internal valve view of rapheless valves. Figs 41–42: Internal view of rapheless valves, note pair of foramina lips. (SEM).
FIGURES 43–62 in Gliwiczia gen. nov. a new monoraphid diatom genus from Lake Baikal with a description of four species new for science
FIGURES 43–62: Gliwiczia tenuis sp. nov. Figs 43–66: Figs 43–55: Valve view of rapheless valves. Fig. 43: arrow indicates presence of cavum in sternum valve. Figs 56–58: Valve view of raphe valves. Fig. 58: arrow indicates presence of cavum in raphe valve. Figs 59: Internal valve view of rapheless valve. Fig. 60 Internal view of valve part with cavum. Figs 61, 62. Internal view of areolae covered by circular foramina, come off from areolae in fig. 61 (43–58: LM; 59–62: SEM). Scale bar: 10 µm.
FIGURES 89–107 in Gliwiczia gen. nov. a new monoraphid diatom genus from Lake Baikal with a description of four species new for science
FIGURES 89–107: Gliwiczia vixcalcar sp. nov. Figs 89-107: Figs 89–101: Valve view of rapheless valves. Fig. 89: arrow indicates presence of cavum in sternum valve. Figs 102, 103: Valve view of raphe valves. Fig. 103: arrow indicates presence of cavum in raphe valve. Figs 104–106: Internal valve view of rapheless valves. Fig. 106. Internal view of valve part, note the pore occlusion. Fig. 107: Internal view of raphe valve note presence of cavum (89–103: LM; 104–107: SEM). Scale bar: 10 µm.
FIGURES 33–36 in Gliwiczia gen. nov. a new monoraphid diatom genus from Lake Baikal with a description of four species new for science
FIGURES 33–36: Gliwiczia skvortzowii sp. nov. Figs 33–36: Figs 33–36: External valve view of raphe valves. (SEM).
FIGURES 1–32 in Gliwiczia gen. nov. a new monoraphid diatom genus from Lake Baikal with a description of four species new for science
FIGURES 1–32: Gliwiczia skvortzowii sp. nov. Figs 1–34: Figs 1–19: Valve view of rapheless valves. Fig. 1: arrow indicates presence of cavum in sternum valve. Figs 20–32: Valve view of raphe valves. Fig. 20: arrow indicates presence of cavum in raphe valve. (LM). Scale bar: 10 µm.
FIGURES 20–31 in Taxonomy, distribution and autecology of Planothidium bagualensis sp. nov. (Bacillariophyta) a common monoraphid species from southern Brazilian rivers
FIGURES 20–31: Planothidium bagualensis SEM views. Fig. 20. External view of rapheless valve. Fig. 21. Internal view of rapheless valve with prominent cavum. Fig. 22. External view of raphe valve. Fig. 23. Internal view of raphe valve. Fig. 24. External detail of central area showing expanded and ligulated proximal raphe endings. Reduced striae forming a rounded wide central area. Striae composed (usually) 3–4 rows of small areolae. Fig. 25. Internal detail of raphe valve showing proximal raphe ends. Fig. 26. External detail of valve extremity of rapheless valve. Striae usually triseriate, interrupted at valve mantle junction. Groups of 4–6 areolae present on mantle at end of each striae. Figs 27–28. Detail of cavum aperture. Note the extremities of the border attached to neighbour striae. Figs 29–30. Terminal raphe ending. Note the higher number of areoale in the raphe valve with striae composed of rows with 4–5 round poroids, irregularly placed toward the ends. Areolae very scarce in valve mantle. Fig. 31. Internal view of rapheless valve areaolae. Scale bars: Figs 20–23, 26 = 5 µm; Figs 24–25, 28–30 = 3 µm; Figs 27 = 2 µm; Fig. 31 = 1 µm.
FIGURES 2–19 in Taxonomy, distribution and autecology of Planothidium bagualensis sp. nov. (Bacillariophyta) a common monoraphid species from southern Brazilian rivers
FIGURES 2–19: Planothidium bagualensis LM views. Figs 2–19. Valve views. Figs 2–10. Rapheless valves. Figs 11–19. Raphe valves. Rio Pardinho hydrographical basin, Rio Grande do Sul, Brazil. BR-4315. Fig. 4. Rapheless valve of designated holotype, BR- 4316. Scale bar represents 10 µm.
FIGURE 1 in Taxonomy, distribution and autecology of Planothidium bagualensis sp. nov. (Bacillariophyta) a common monoraphid species from southern Brazilian rivers
FIGURE 1: (A) Confirmed presence of Planothidium bagualensis in southern Brazil according to published and illustrated literature (see Table 1 for details). 1 = Lange-Bertalot & Krammer (1989); 2 = Rodrigues & Moreira Filho (1990); 3 = Krammer & Lange- Bertalot (1991); 4 = Ludwig & Flores (1995); 5 = Burliga et al. (2005); 6 = Ludwig & Bigunas (2006); 7 = Ferrari & Ludwig (2007); 8 = Leandrini et al. (2010); 9 = Bes et al. (2012); 10 = Fontana & Bicudo (2012); 11 = Bartozek et al. (2013). (B) Rio Pardo hydrographical basin in the State of Rio Grande do Sul (RS), Brazil, with location of sampling sites in the Rio Pardinho (S1-S6) and Rio Pardo sub-basins (S7 and S9) sampled during the years 2001–2004 (n=129).
FIGURE 32 in Taxonomy, distribution and autecology of Planothidium bagualensis sp. nov. (Bacillariophyta) a common monoraphid species from southern Brazilian rivers
FIGURE 32: Boxplot of relative abundance (%) of Planothidium bagualensis in the Rio Pardo hydrographical basin, RS, Brazil and relationships between phosphates (PO 3−; mg L−1), chemical oxygen demand (COD; mg L−1), total dissolved solids (TDS; mg L−1) and 4 pH. Percentages based in counting of at least 600 valves per sample (n=129). Dashed lines indicate weighted average optima.
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