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27 results for “Ulnaria”
FIG. 3 in Morphological description and molecular phylogeny of two diatom clones from the genus Ulnaria (Kützing) Compère isolated from an ultraoligotrophic lake at the Pole of Cold in the Northern Hemisphere, Republic of Sakha (Yakutia), Russia
FIG. 3. — Cells in the culture Ulnaria pilum Kulikovskiy & Lange-Bertalot LAB55 attached to substrate: A, LM, mucilage strands are stained by Alcian blue in single cell; B, LM, cell aggregates; C, SEM, there are no traces of mucilage on the unattached ends of cells, tree closed girdle bands of each valve are pointed by arrowheads; D, SEM, attachment occurs with mucilage excreted through the pore field. Scale bars: A, B, 50 µm; C, 5 µm; D, 1 µm.
FIG. 2 in Morphological description and molecular phylogeny of two diatom clones from the genus Ulnaria (Kützing) Compère isolated from an ultraoligotrophic lake at the Pole of Cold in the Northern Hemisphere, Republic of Sakha (Yakutia), Russia
FIG. 2. — Ulnaria pilum Kulikovskiy & Lange-Bertalot LAB59: A, LM; B, SEM, external view and central area; C, internal view and central area; D, SEM, external view and the valve apex; E, internal view and the valve apex, rimoportula is located at an oblique angle relative to the central sternum; F, SEM, external view, two small spines at the apex. Scale bars: A, 50 µm; B-E, 5 µm; F, 1 µm.
FIG. 1 in Morphological description and molecular phylogeny of two diatom clones from the genus Ulnaria (Kützing) Compère isolated from an ultraoligotrophic lake at the Pole of Cold in the Northern Hemisphere, Republic of Sakha (Yakutia), Russia
FIG. 1. — Study site (62°33'33"N; 143°36'27"E), Lake Labynkyr, Sakha Republic (Yakutia), Russia.
FIGURES 20–23 in Three new species of Ulnaria (Bacillariophyta) from the Wuling Mountains Area, China
FIGURES 20–23. Ulnaria sinensis sp. nov., SEM. 20. One pole of two valves showing the basal siliceous layer, note the tiny poroids located at the end of the striae on the mantles (arrows). 21–22. Two poles in girdle view showing the closed valvocopulae, note the spatulate linking spines and the tiny poroids located at the end of the striae on the mantles (arrows). 23. Part of one girdle band, note the closed nature and one row of pores locating in the middle. Scale bars = 5 μm.
FIGURES 3–10 in Three new species of Ulnaria (Bacillariophyta) from the Wuling Mountains Area, China
FIGURES 3–10. Ulnaria sinensis sp. nov., LM. 3. Whole frustule attached to single valve, in girdle view. 4. Holotype specimen. 5. Isotype specimen. 6–7. Two different valves. 8–10. Details of Fig. 4, note misaligned striae (arrows). Scale bars = 50 μm (Figs 3–7), 20 μm (Figs 8–10).
FIGURES 37–40 in Three new species of Ulnaria (Bacillariophyta) from the Wuling Mountains Area, China
FIGURES 37–40. Ulnaria ulnabiseriata sp. nov., girdle view, SEM. 37. One complete frustule. 38–40. Details of the previous whole frustule, note the cingulum elements, especially the six closed girdle bands (labeled B1–B6). Scale bar =10 μm (Fig. 37), 5μm (Figs 38–40).
FIGURES 59–62 in Three new species of Ulnaria (Bacillariophyta) from the Wuling Mountains Area, China
FIGURES 59–62. Ulnaria gaowangjiensis sp. nov., girdle view, SEM. 59. One complete frustule. 60–62. Details of the previous whole frustule, note the cingulum elements, especially the six closed girdle bands (labeled B1–B6) and plaques (arrows). Scale bar =10 μm (Fig. 59), 5μm (Figs 60–62).
FIGURE 2 in Three new species of Ulnaria (Bacillariophyta) from the Wuling Mountains Area, China
FIGURE 2. Ulnaria sinensis sp. nov., girdle view, LM. A pole of a colony composed of four frustules (labeled F1 to F4). Scale bar = 20 μm.
FIGURES 14–19 in Three new species of Ulnaria (Bacillariophyta) from the Wuling Mountains Area, China
FIGURES 14–19. Ulnaria sinensis sp. nov., external view, SEM. 14. One apex of a valve, note the rostrate end. 15. The middle part of a valve, note the parallel both sides. 16. Magnification of the previous apex. 17. Magnification of the previous middle part, note the linking spines (arrows) and the alternate striae (double-head arrow). 18. Magnification of an apex. 19. One pole showing the ocellulimbus and the pore closing plates. Scale bars =10 μm (Figs 14, 15), 5 μm (Figs 16–18), 1 μm (Fig. 19).
FIGURES 11–13 in Three new species of Ulnaria (Bacillariophyta) from the Wuling Mountains Area, China
FIGURES 11–13. Ulnaria sinensis sp. nov., girdle view, SEM. 11. One pole of a colony, note the complete frustule and its cingulum elements, especially the six closed girdle bands (labeled B1–B6). 12. The middle part of the colony, note the six girdle bands (labeled B1–B6). 13. The other pole, note the complete frustule and its cingulum elements, especially the six closed girdle bands (labeled B1–B6). Scale bars = 10 μm.
FIGURE 1 in Three new species of Ulnaria (Bacillariophyta) from the Wuling Mountains Area, China
FIGURE 1. Map of the study sites: FR = Fanjing Mountain National Nature Reserve, GR = Gaowangjie National Nature Reserve, ZP = Zhangjiajie National Forestry Park.
FIGURES 68–71 in Three new species of Ulnaria (Bacillariophyta) from the Wuling Mountains Area, China
FIGURES 68–71. Ulnaria gaowangjiensis sp. nov., internal view, SEM. 68. One whole valve, note that the ends are slenderer than in external view (Fig. 63). 69–71. Details of the previous whole valve. Scale bar =10 μm (Fig. 68), 5μm (Figs 69–71).
FIGURES 47–51 in Three new species of Ulnaria (Bacillariophyta) from the Wuling Mountains Area, China
FIGURES 47–51. Ulnaria ulnabiseriata sp. nov., SEM. 47. One pole in girdle view showing the ocellulimbus and the pore closing plates. 48. A whole valve. 49–51. Details of the previous whole valve. Scale bar =1 μm (Fig. 47), 10 μm (Fig. 48), 5 μm (Figs 49–51).
FIGURES 30–36 in Three new species of Ulnaria (Bacillariophyta) from the Wuling Mountains Area, China
FIGURES 30–36. Ulnaria ulnabiseriata sp. nov., LM. 30–35. Six valves showing variety of the valve, note some striae without opposite ones (arrows). 30. Photograph of holotype. 35. Photograph of isotype. 36. A frustule in girdle view. Scale bar =10 μm for all figures.
FIGURES 63–67 in Three new species of Ulnaria (Bacillariophyta) from the Wuling Mountains Area, China
FIGURES 63–67. Ulnaria gaowangjiensis sp. nov., external view, SEM. 63. One whole valve. 64–66. Details of the previous whole valve, note the biseriate striae becoming uniseriate striae composed of 2–4 tiny pores at the end of each stria (arrows). 67. Part of some striae showing the vela. Scale bar =10 μm (Fig. 63), 5 μm (Figs 64–66), 1 μm (Fig. 67).
FIGURES 24–29 in Three new species of Ulnaria (Bacillariophyta) from the Wuling Mountains Area, China
FIGURES 24–29. Ulnaria sinensis sp. nov., internal views, SEM. 24. One pole of a vavle, note the rostrate end. 25. The middle part of a valve, note the parallel both sides. 26. The other pole. 25. Magnification of the previous pole. 26. Magnification of the previous middle part. 27. Magnification of the other pole, note the alternate striae. Scale bars =10 μm (24–26), 5 μm (27–29).
FIGURES 52–58 in Three new species of Ulnaria (Bacillariophyta) from the Wuling Mountains Area, China
FIGURES 52–58. Ulnaria gaowangjiensis sp. nov., LM. 52–58. Six valve showing variety of the valve, note some striae without opposite ones (arrows). 52. External view of a valve. 53. Photograph of holotype. 54–55. Internal view of two valves. 56. Photograph of isotype. 57. One whole frustule in girdle view. Scale bar =10 μm for all figures.
FIGURES 41–46 in Three new species of Ulnaria (Bacillariophyta) from the Wuling Mountains Area, China
FIGURES 41–46. Ulnaria ulnabiseriata sp. nov., external view, SEM. 41. One whole valve. 42–43. Details of the previous two poles, note the alternate striae. 44–46. Details of the middle parts of the previous whole valve, note the opposite striae and biseriate striae becoming uniseriate striae at the end of each stria. Scale bar =10 μm (Fig. 41), 5μm (Figs 42–46).
FIGURES 28–31 in Taxonomic and ecological characterization of two Ulnaria species (Bacillariophyta) from streams in Cyprus
FIGURES 28–31. SEM outside views of Ulnaria monodii comb. nov. Fig. 28. Complete frustule in oblique position. Figs. 29–30. Details of the endings: note the apical rimoportula and spines, and the ocellolimbus (number and arrangement of porelli). Fig. 31. Central part of the frustules in oblique view: Note marginal spines, striae continuing on the mantle, and the complete absence of central area. Scale bars: Fig. 28 = 60 μm; Fig. 29 = 7 μm; Fig. 30 = 6 μm; Fig. 31 = 6 μm.
FIGURES 57–60 in Taxonomic and ecological characterization of two Ulnaria species (Bacillariophyta) from streams in Cyprus
FIGURES 57–60. Scatter plots of four parameters defining the ecological niches of the two Ulnaria species studied, and allowing a comparison between the two. Fig. 57. pH. Fig. 58. Conductivity (EC). Fig. 59. Total nitrogen (TN). Fig. 60. Total phosphorus (TP).
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