Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
88
datasets available to search
ShareScore release 0.7.1
Dataset results
88 results for “Navicula”
FIGURES 18–28. Microcostatus edaphicus. 18–23 in Study of the type material of Navicula egregia Hustedt and descriptions of two new aerial Microcostatus (Bacillariophyta) species from Central Europe
FIGURES 18–28. Microcostatus edaphicus. 18–23. LM photographs of type material from Hustedt Collection. 24–25, 27. SEM photographs of external valve view with characteristic clearly visible elongated pores as continuation of striae. 26, 28. Internal valve view with helictoglossae.
FIGURES 29–56. Microcostatus egregius. 29 in Study of the type material of Navicula egregia Hustedt and descriptions of two new aerial Microcostatus (Bacillariophyta) species from Central Europe
FIGURES 29–56. Microcostatus egregius. 29. Drawing of Navicula egregia Hustedt 1942a. 30–52. LM photographs of Hustedt type material. 53, 55–56. SEM photographs of external valve view illustrating a row of perforation in the place of sternum and conopeum connection. 54. Internal valve view with helictoglossae.
FIGURE 5 in A new species, Navicula lothargeitleri sp. nov., within the Navicula cryptocephala complex (Bacillariophyceae)
FIGURE 5. Reconstruction of the characteristic shapes of both clades based on the geometric morphometric analysis. For each clade, the deformation grids illustrate the discriminating shape trends. For better visibility of discriminating features the deformation grids are depicted with two times magnified bending along the discriminant axis. A. Navicula cryptocephala (clade I "RBG"). B. Navicula lothargeitleri sp. nov. (clade II "Lubnaig").
FIGURE 3 in A new species, Navicula lothargeitleri sp. nov., within the Navicula cryptocephala complex (Bacillariophyceae)
FIGURE 3. Ordination plot illustrating the results of the principal component analysis of the geometric morphometric data (PC1 = 61.1%, PC2 = 28.9 of the total variation). Crosses corresponds to clade I (N. cryptocephala sensu stricto), open squares to clade II (N. lothargeitleri sp. nov.). The lectotype morphospace spanned PC1 and PC2 and is shown by a solid square.
FIGURE 2. Navicula cryptocephala and N in A new species, Navicula lothargeitleri sp. nov., within the Navicula cryptocephala complex (Bacillariophyceae)
FIGURE 2. Navicula cryptocephala and N. lothargeitleri sp. nov., SEM. A–F. Navicula cryptocephala O/71. A. External view. B. Internal view. C. Central part external view. D. Central part internal view. E. Valve end external view. F. Valve end internal view. G–K. Navicula lothargeitleri sp. nov., strain 647K. G. Both valves. H. Central part external view. I. Central part internal view. J. Valve end external view. K. Valve end internal view. Scale bars: 10 μm (A–B, G), 1 μm (C–F, H–K).
FIGURE 1 in A new species, Navicula lothargeitleri sp. nov., within the Navicula cryptocephala complex (Bacillariophyceae)
FIGURE 1. Navicula cryptocephala (clade I "RBG") and N. lothargeitleri sp. nov. (clade II "Lubnaig") in light and fluorescence microscopy. A. N. cryptocephala interphase nucleus in FM after DAPI staining; arrows indicate two peripheral plaques of heterochromatin lying opposite each other. B–E. Navicula cryptocephala strains 460R, 462R. B–D. Small cells (size range prior to sexual reproduction). C–E. Post-initial cells. F–H. Type material, slide BM 18785. F. Lectotype specimen, as shown in Cox (1995, fig. 23). I. Navicula lothargeitleri interphase nucleus structure in FM after DAPI staining, note central mass of heterochromatin with one nucleolus (arrow). J. Navicula lothargeitleri living cell in interphase with two chloroplasts and nucleus. K. Living cell after chloroplast rotation showing barlike pyrenoid (arrow). L. Navicula lothargeitleri cleaned valve from natural population on Loch Lubnaig (slide E3579/1 in Royal Botanic Garden, Edinburgh). M–N. Navicula lothargeitleri strains O/26, 647K respectively. O–P. Strain 27L. O. Navicula lothargeitleri, holotype. P. Post-initial cell. Scale bar: 10 μm.
FIGURE 4 in A new species, Navicula lothargeitleri sp. nov., within the Navicula cryptocephala complex (Bacillariophyceae)
FIGURE 4. Linear discriminant analysis of valve shape coordinates with their clade affiliation (Hottelling T2 = 320.1, p <10-5). The grey group corresponds to N. cryptocephala sensu stricto and the black group to N. lothargeitleri sp. nov. The leave-out classification analysis correctly assigned 85.3% of the objects to their original groups; the leave-out classification analysis of the lectotype: score on a discriminant axis = 56.7, i.e. strongly clade I (N. cryptocephala).
FIGURES 13–18 in Navicula amoyensis sp. nov. (Bacillariophyceae), a new benthic brackish diatom species from the Jiulong River estuary, Southern China
FIGURES 13–18. SEM micrographs of Navicula amoyensis sp. nov. Figs 13, 14. Internal views of entire valves of different frustules, showing an additional lateral thickening at the centre of the accessory rib (arrow). Fig. 15. Internal valve view showing details of central raphe fissures with a distinct central interruption (arrow). Fig. 16. Internal view showing details of the valve apices, where linear raphe axis distally terminated by more or less rounded helictoglossa (arrow) and positioned just below the terminal area. Fig. 17. Internal view. Striae composed of simple slit-like lineolae, positioned in shallow and narrow depressions (arrow). Fig. 18. Internal central raphe endings, interrupted by an extended thickening accessory rib (arrow). Scale bars in figs 13, 14 = 5 μm; fig. 15 = 2μm; figs 16–18 = 1 μm.
FIGURES 19–22 in Navicula amoyensis sp. nov. (Bacillariophyceae), a new benthic brackish diatom species from the Jiulong River estuary, Southern China
FIGURES 19–22. SEM micrographs of internal and girdle views of Navicula amoyensis under SEM. Figs 19, 20. Internal view of entire valves of different frustules. Note that the helictoglossa is almost central (arrow). Figs 21, 22. Girdle views showing the constricted frustules in the middle. External view of frustules showing broad girdle with pectinate margin (arrow). Scale bars in figs 19–22 = 10 μm.
FIGURES 9–12. Fig. 9 in Navicula amoyensis sp. nov. (Bacillariophyceae), a new benthic brackish diatom species from the Jiulong River estuary, Southern China
FIGURES 9–12. Fig. 9. External view of entire valve with terminal areas (arrow). Fig. 10. Central area showing the distinct continuous external central raphe endings. Figs 11, 12. Valve apices showing the external terminal raphe fissures deflected towards on the secondary valve side (arrow). Two rows of apical areolae at the valve apices. Scale bars in fig. 9 = 10 μm; fig. 10 = 2 μm; figs 11, 12 = 1 μm.
FIGURE 19–24 in New species of the genus Navicula Bory (Bacillariophyceae, Naviculaceae) from Lake Teletskoye
FIGURE 19–24. Navicula teletskoyensis sp. nov., SEM, type material. 19–21. External valve views. 22–24. Internal valve views. 19, 22. Whole valve. 20, 23. Valve centre. 21, 24. Valve apex. Scale bars: 5 μm (Figs 19, 22), 1 μm (Figs 20–21, 23–24).
FIGURE 1–18 in New species of the genus Navicula Bory (Bacillariophyceae, Naviculaceae) from Lake Teletskoye
FIGURE 1–18. Navicula teletskoyensis sp. nov., light microscopy, type material (slide 692s1), fig. 4 represents the holotype specimen. 1–9. DIC optics. 10–18. Bright field optics. Scale bar: 10 μm.
FIGURES 189–201. Fig. 189. Lyrella clavata. Figs. 190–192. L. barbara. Figs. 193–194. Navicula longa. Fig. 195. N. duerrenbergiana. Fig.196. N. zostereti. Fig. 197. N. feuerbornii. Fig. 198. N. pargemina. Figs. 199–201. N. lusoria. Fig. 199. SEM internal valve view. Fig. 200. SEM external valve view. Fig. 201 in Diatoms (Bacillariophyta) From Artificial Substrates And Sediments In The Caribbean Sea Off Yucatan, Mexico
FIGURES 189–201. Fig. 189. Lyrella clavata. Figs. 190–192. L. barbara. Figs. 193–194. Navicula longa. Fig. 195. N. duerrenbergiana. Fig.196. N. zostereti. Fig. 197. N. feuerbornii. Fig. 198. N. pargemina. Figs. 199–201. N. lusoria. Fig. 199. SEM internal valve view. Fig. 200. SEM external valve view. Fig. 201. LM valve view. Scale bar: figs. 199 = 1 μm, figs. 189–198, 201= 10 μm.
FIGURES 1–14 in Navicula gogorevii-a new, large-celled diatom species from Vietnam (Southeast Asia)
FIGURES 1–14: Navicula gogorevii Chudaev, Glushchenko, Kulikovskiy & Kociolek, sp. nov. LM, DIC. Slide no 02168. Size diminution series. Figure 3 is of the holotype. Scale bar = 10 μm.
FIGURES 21–26 in Navicula gogorevii-a new, large-celled diatom species from Vietnam (Southeast Asia)
FIGURES 21–26: Navicula gogorevii Chudaev, Glushchenko, Kulikovskiy & Kociolek, sp. nov. SEM. Internal view. Figs 21, 22: Whole valve. Figs 23, 24: Central area. White arrows show the raphe slits open obliquely to the secondary valve side. Proximal raphe endings straight, positioned on the slight widening of raphe-ridge, with short intermissio. Black arrows show the prominent accessory rib, unilaterally widened to the primary valve side. Black arrowhead shows the shallow longitudinal furrow. White arrowhead shows the extended accessory rib. Figs 25, 26: Valve ends. Black arrows show the helictoglossae. White arrow shows the raphe slit open obliquely to the secondary valve side. White arrowheads show the cushion-like thickenings at the ends of accessory rib. Black arrowheads show the apically-elongated openings of apical areolae. Scale bars = 10 μm (Figs 21, 22); 2 μm (Figs 23, 24); 1 μm (Figs 25, 26).
FIGURES 15–20 in Navicula gogorevii-a new, large-celled diatom species from Vietnam (Southeast Asia)
FIGURES 15–20: Navicula gogorevii Chudaev, Glushchenko, Kulikovskiy & Kociolek, sp. nov. SEM. External view. Figs 15, 16: Whole valve. Figs 17, 18: Central area. White arrows show the asymmetrical central pores. Fig. 17. White arrowhead shows the pointed groove ending. Figs 19, 20: Valve ends. Fig. 19. Black arrows show the distinct longitudinal grooves, separated by longitudinal siliceous strips, curved around central area and straight on the rest of the valve. White arrow shows the sickle-shaped terminal fissure, lying mostly on the valve face. Black arrowheads show the pinhole-like openings of apical areolae. Fig. 20. Black arrow shows the separate areolae, located in slit. White arrow shows the sickle-shaped terminal fissure, lying mostly on the valve face. Black arrowhead shows the pinhole-like openings of apical areolae. White arrowhead shows the pointed groove ending. Scale bars = 10 μm (Figs 15, 16); 2 μm (Figs 17, 18); 1 μm (Figs 19, 20).
FIGURES 44–48. Navicula watveae SEM. Figs 44, 45 in Navicula watveae sp. nov. (Bacillariophyceae) a new diatom species from the Western Ghats, India
FIGURES 44–48. Navicula watveae SEM. Figs 44, 45. Internal view of whole valve. Figs 46, 48. Internal view of apices showing internal areolae pattern and distal raphe endings. Fig. 47. Internal view of center valve showing proximal raphe endings. Scale bars=2 µm.
FIGURES 39–43. Navicula watveae SEM. Figs 39–40, 43 in Navicula watveae sp. nov. (Bacillariophyceae) a new diatom species from the Western Ghats, India
FIGURES 39–43. Navicula watveae SEM. Figs 39–40, 43. External view of whole valve showing striae pattern and raphe structure. Figs 40, 42. External view of apices showing the deflection of distal raphe endings. Fig. 41. External view of central valve showing the proximal raphe ending. Scale bars=2 µm.
FIGURES 14–18. SEM, Internal valve views. Fig.14 in Navicula daochengensis sp. nov., a new freshwater diatom species (Bacillariophyceae) from a small mountain lake, Sichuan Province, China
FIGURES 14–18. SEM, Internal valve views. Fig.14. Internal view of complete valve. Fig. 15, 16. Internal details of the central area. Fig. 17, 18. Valve apices. Scale bars = 10 μm (Fig. 14), 2 μm (Figs 15–18).
FIGURES 7–13. SEM, External valve views. Fig.7 in Navicula daochengensis sp. nov., a new freshwater diatom species (Bacillariophyceae) from a small mountain lake, Sichuan Province, China
FIGURES 7–13. SEM, External valve views. Fig.7. External view of complete valve. Fig. 8, 9,10. Valve centre exterior. Fig. 11. External view of striae. Fig. 12, 13. External details of the apex. Scale bars = 10 μm (Fig. 7), 2 μm (Figs 8–13)
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.