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.
20
datasets available to search
ShareScore release 0.9.0
Dataset results
20 results for “Orthoseira”
Phylogenetic analysis reveals that the 'radial centric' diatom Orthoseira Thwaites (Orthoseiraceae, Bacillariophyta) is a member of a 'multipolar' diatom lineage
<p>These .zip files include input and output data for the following analyses that were used to produce this publication: gene sequence alignments (single and concatenated), PartitionFinder2, RAxML, CONSEL.</p>
FIGURES 79–84 in Orthoseira variabilis sp. nov., a new diatom from a snow patch in Potter Cove, King George Island, Antarctica
FIGURES 79–84. Orthoseira variabilis sp. nov. SEM. Girdle elements. Fig. 79. Valvocopula with internal silica thickening attached to valve. Fig. 80. Detached open valvocopula. Fig. 81. Broken frustule in internal view showing valve and attached valvocopula with thickened pars interior and poroids. Fig. 82. Open, ligulate copula. Fig. 83. Detail of a copula showing ligula. Fig. 84. Detail of a copula showing tiny poroids and fimbriae. Scale bar: 10 µm (Figs 79–80, 82), 5 µm (Figs 81, 83), 2 µm (Fig. 84).
FIGURES 85–94 in Orthoseira variabilis sp. nov., a new diatom from a snow patch in Potter Cove, King George Island, Antarctica
FIGURES 85–94. Orthoseira variabilis sp. nov. Figs 85–92. LM. Initial cells. Figs 85–87. Girdle view. Figs 88–92. Valve view. Figs 93–94. SEM. Initial valve. Fig. 93. General view. Fig. 94. Detail of central area of specimen in Fig. 93, rotated; note the numerous and incompletely developed carinoportulae. Figures marked with "=" are the same valves with a different focus. Scale bar: 10 µm (Figs 85–93; scale bar is the same for Figs 85–92), 5 µm (Fig. 94).
FIGURES 61–65 in Orthoseira variabilis sp. nov., a new diatom from a snow patch in Potter Cove, King George Island, Antarctica
FIGURES 61–65. Orthoseira variabilis sp. nov. SEM. Specimens in girdle view. Fig. 61. Valve with pore field (arrow) and raised interstriae on the mantle. Note the collum (white arrowhead) separated from the mantle striae by a smooth area (black arrowhead). Figs 62–65. Whole frustules; note the presence of pore fields, step and collum in the mantle, and the cingulum composed by open, ligulate copulae. Collum (white arrowhead) and smooth area of the mantle (black arrowhead) are also indicated in Fig. 64. Fig. 63 is a detail of Fig. 62, rotated. Scale bar: 10 µm.
FIGURES 2–14 in Orthoseira variabilis sp. nov., a new diatom from a snow patch in Potter Cove, King George Island, Antarctica
FIGURES 2–14. Orthoseira variabilis sp. nov. LM. Frustules in girdle view. Note mantle step (Fig. 7, black arrow) and marginal spines (Fig. 14, white arrowheads). Figures marked with "=" are the same frustules with a different focus. Scale bar: 10 µm (Scale bar is the same for Figs 2–13).
FIGURE 1 in Orthoseira variabilis sp. nov., a new diatom from a snow patch in Potter Cove, King George Island, Antarctica
FIGURE 1. Map of the Antarctic Peninsula and South Shetland Islands (left); map of King George Island/Isla 25 de Mayo, showing the location of Potter Cove (right, top); panoramic view of Potter Cove and sampling site (right, center, arrow); close view of the sampling site (right, bottom, arrow).
FIGURES 48–52. Orthoseira johansenii R.L in Two new Orthoseira species (Bacillariophyceae) from lava tubes on Île Amsterdam and Big Island (Hawai΄i)
FIGURES 48–52. Orthoseira johansenii R.L.Lowe & Kociolek sp. nov. Scanning Electron Micrographs. Fig. 48. Internal view of an entire valve showing three carinoportulae. Fig. 49. Internal view of a valve linked to a second valve. Note the rather shallow mantle and hyaline area around the two carinportulae. Fig. 50. Detail of a broken valve edge showing the structure of the areolar canal closed by a velum. Fig. 51. Detail of a few areola in cross-section. Fig. 52. Detail of the carinoportulae. Note the absence of small slits between the carinoportulae. Scale bar represents 10 µm in Figs 48 & 49, 2 µm in Figs 50 & 52 and 1 µm in Fig. 51.
FIGURES 42–47. Orthoseira johansenii R.L in Two new Orthoseira species (Bacillariophyceae) from lava tubes on Île Amsterdam and Big Island (Hawai΄i)
FIGURES 42–47. Orthoseira johansenii R.L.Lowe & Kociolek sp. nov. Scanning Electron Micrographs. Fig. 42. External view of an entire valve showing two carinoportulae, the small hyaline central area and the rows of areolae and the (eroded) regularly placed linking spines. Fig. 43. External view of an entire valve showing two carinoportulae, a more irregular pattern of areolae, a larger hyaline central area and regularly placed linking spines. Fig. 44. Detail of the carinoportulae with a raised rim. Note also the raised areolae. Fig. 45. Detail of the valve face/mantle junction with big spines and silica outgrowths on the mantle. Fig. 46. Detail of two valves linked by bifurcating linking spines and one open girdle band with small perforations. Fig. 47. Detail of the perforated, open girdle bands. Scale bar represents 10 µm in Figs 42, 43, 46 & 47 and 1 µm in figs 44 & 45.
FIGURES 28–33 in Two new Orthoseira species (Bacillariophyceae) from lava tubes on Île Amsterdam and Big Island (Hawai΄i)
FIGURES 28–33. Orthoseira verleyenii Van de Vijver sp. nov. Scanning Electron Micrographs. Fig. 28. External view of an entire frustule linked in a short chain to two other valves. The number of (perforated) copula is well visible. Fig. 29. Girdle view of one valve showing a large number of girdle bands. Fig. 30. Entire frustules linked to other valves with large linking spines. Fig. 31. Detail of linking spines. Figs 32–33. Two valves linked by spines showing details of their mantle structure with small silica outgrowths. Scale bar represents 10 µm, except in Fig. 31 where scale bar = 1 µm.
FIGURES 6–15 in Two new Orthoseira species (Bacillariophyceae) from lava tubes on Île Amsterdam and Big Island (Hawai΄i)
FIGURES 6–15. Orthoseira verleyenii Van de Vijver sp. nov. Light microscope images. Figs 6–9 Valve views showing the variability in the extent of the hyaline central area. Figs 10–15. Details of the central area with an increasing number of carinoportulae (from 1 in Fig. 10 up to 6 in Fig. 15). Scale bar represents 10 µm.
FIGURES 34–41. Orthoseira johansenii R.L in Two new Orthoseira species (Bacillariophyceae) from lava tubes on Île Amsterdam and Big Island (Hawai΄i)
FIGURES 34–41. Orthoseira johansenii R.L.Lowe & Kociolek sp. nov. Light Microscopical views. Figs 34–39 Valve views showing the variability in the extent of the hyaline central area and the number of carinoportulae. Figs 40–41. Girdle views with focus on the bifurcating spines and the girdle bands. Scale bar represents 10 µm.
FIGURES 16–22 in Two new Orthoseira species (Bacillariophyceae) from lava tubes on Île Amsterdam and Big Island (Hawai΄i)
FIGURES 16–22. Orthoseira verleyenii Van de Vijver sp. nov. Scanning electron micrographs. Fig. 16. External view of an entire valve showing two carinoportulae, the small hyaline central area and the rows of areolae and the (eroded) regularly placed linking spines. Fig. 17. External view of an entire valve showing two carinoportulae, a more irregular pattern of areolae and a larger hyaline central area and regularly placed linking spines. Fig. 18. Detail of the valve face/mantle junction. Fig. 19. External valve face view of an entire valve showing three carinoportulae. Figs 20–22. Detail of several arrangements of carinoportulae. Note the presence of weakly raised rims around the carinoportulae. Scale bar represents 10 µm in figs 16–19 and 1 µm in figs 20–22.
FIGURES 1–5 in Two new Orthoseira species (Bacillariophyceae) from lava tubes on Île Amsterdam and Big Island (Hawai΄i)
FIGURES 1–5. Orthoseira verleyenii Van de Vijver sp. nov. Light microscope images. Figs 1–2. Entire frustule showing the complete mantle and girdle structure. Fig. 3. View of two valves with focus on the linking spines. Fig. 4. Mantle edge with linking spines. Fig. 5. Detail of the mantle of two valves connected by linking spines. Scale bar represents 10 µm.
FIGURES 23–27 in Two new Orthoseira species (Bacillariophyceae) from lava tubes on Île Amsterdam and Big Island (Hawai΄i)
FIGURES 23–27. Orthoseira verleyenii Van de Vijver sp. nov. Scanning Electron Micrographs. Fig. 23. Internal view of an entire valve showing two carinoportulae, a large hyaline central area and areolae arranged in small striae near the valve face/mantle junction. Fig. 24. Internal view of a broken valve focusing on the valve face/mantle transition. Two carinoportulae are visible. Figs 25–27. Internal detail of several arrangements of carinoportulae. Note the presence of small slits between carinoportulae. Scale bar represents 10 µm in Figs 23–24 and 1 µm in Figs 25–27.
FIGURES 23–32 in Orthoseira groenlandica sp. nov., a new aerophilic diatom (Orthoseirales, Bacillariophyta) species from Greenland
FIGURES 23–32. Orthoseira groenlandica Goeyers, Kochman-Kędziora & Van de Vijver, sp. nov. SEM pictures taken from the holotype material (BR-2801, Qeqertarsuaq, Greenland, sample DM27). 23. Frustule in girdle view showing the structure of the cingulum. 24. Entire girdle band. 25. SEM external view of a valve in oblique view showing the step in the mantle (arrows). Fig. 26. SEM external view of a valve in oblique view lacking the step in the mantle. 27–29. Three external views of an entire valve. Note the typical siliceous scales in the valve center, the marginal ring of ridges and the scattered, short teeth-like spines. 30. SEM external oblique detail showing the irregular valve face ornamentation with papillae, thin spines and siliceous plates in the valve center. 31. SEM external detail of the marginal spines. Note the granulate surface structure of the girdle band. 32. SEM external detail of the surface structure in the central area obscuring the view on the carinoportulae. Scale bars = 10 µm (Figs 23–31), 1 µm (Fig. 32).
FIGURES 1–22 in Orthoseira groenlandica sp. nov., a new aerophilic diatom (Orthoseirales, Bacillariophyta) species from Greenland
FIGURES 1–22. Orthoseira groenlandica Goeyers, Kochman-Kędziora & Van de Vijver, sp. nov. LM pictures taken from the holotype material (BR-2801, Qeqertarsuaq, Greenland, sample DM27). 1–6. Solitary frustules in girdle view. 7–22. LM pictures of valves in valve face view showing the rather constant number of carinoportulae and the irregularly spaced marginal spines. Figure 10 represents a teratological valve. Scale bar = 10 µm.
FIGURES 33–35 in Orthoseira groenlandica sp. nov., a new aerophilic diatom (Orthoseirales, Bacillariophyta) species from Greenland
FIGURES 33–35. Orthoseira groenlandica Goeyers, Kochman-Kędziora & Van de Vijver, sp. nov. SEM pictures taken from the holotype material (BR-2801, Qeqertarsuaq, Greenland, sample DM27). 33. SEM internal view of a complete valve. 34–35. SEM internal details of the carinoportulae showing the slits between the carinoportulae. The white arrows in Fig. 34 indicate the slit-like openings scattered between the areolae. Scale bars = 10 µm (Figs 33–34), 1 µm (Fig. 35).
FIGURES 66–78 in Orthoseira variabilis sp. nov., a new diatom from a snow patch in Potter Cove, King George Island, Antarctica
FIGURES 66–78. Orthoseira variabilis sp. nov. SEM. Specimens in internal valve view. Figs 66–72. Whole valve views. Note valves with shallow or inconspicuous caverns (arrows). Figs 73–78. Details of valve surface, showing areolar structure, carinoportulae, etched slits (Figs 73–74, arrows), and shallow caverns (Figs 76–78); note small unoccluded perforations among the areolae (arrowheads). Fig. 75 is a detail of Fig. 71, rotated. Fig. 76 is a detail of Fig. 72. Fig. 77 is a detail of Fig. 70. Fig. 78 is a detail of Fig. 66. Scale bar: 10 µm (Figs 66–72), 2 µm (Figs 73–78).
FIGURES 49–60 in Orthoseira variabilis sp. nov., a new diatom from a snow patch in Potter Cove, King George Island, Antarctica
FIGURES 49–60. Orthoseira variabilis sp. nov. SEM. Specimens in external view. Figs 49–54. Whole valve views; the arrow in Fig. 52 indicates a patch of smooth area. Figs 55–59. Details of valve surface, showing carinoportulae (Figs 55–56), areolar structure (Figs 56–58), a patch of smooth area (Fig. 58) and marginal spines (Fig. 59, white arrowheads). Fig. 60. Mantle view; note the conic spines at the margin (black arrowheads). Figs 55 and 57 are details of Fig. 53; Fig. 55, rotated. Fig. 56 is a detail of Fig. 54, rotated. Fig. 58 is a detail of Fig. 52, rotated. Fig. 59 is a detail of Fig. 50. Scale bar: 10 µm (Figs 49–54), 5 µm (Fig. 60), 2 µm (Figs 55–59).
FIGURES 15–48 in Orthoseira variabilis sp. nov., a new diatom from a snow patch in Potter Cove, King George Island, Antarctica
FIGURES 15–48. Orthoseira variabilis sp. nov. LM. Specimens in valve view. Figs 24–25: Holotype. Figs 46–48. Same specimen in three different focus levels; note the marginal spines. Figures marked with "=" are the same valves with a different focus. Scale bar: 10 µm (Scale bar is the same for Figs 15–45 and for Figs 46–48).
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.