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FIGURES 122–144 in Morphological and taxonomical analysis of the terrestrial diatom genus Humidophila (Bacillariophyta) on Ile Amsterdam and Ile Saint-Paul (Southern Indian Ocean)

FIGURES 122–144. Humidophila rouhaniana Chattová & Van de Vijver sp. nov. Light (LM) and scanning electron micrographs (SEM). 122–140. LM of valve views of the type population from Ile Amsterdam. 141–144. SEM of external valve view showing the stauroform central area and the raphe with depressed proximal and distal pores with distinct bowtie endings. LM scale bar = 10 μm. SEM scale bars = 1 μm.

FIGURES 101–121 in Morphological and taxonomical analysis of the terrestrial diatom genus Humidophila (Bacillariophyta) on Ile Amsterdam and Ile Saint-Paul (Southern Indian Ocean)

FIGURES 101–121. Humidophila amsterdamensis Chattová &Van de Vijver sp. nov. Light (LM) and scanning electron micrographs (SEM). 101–115. LM of valve views of the type population from Ile Amsterdam. 116–118. SEM of an entire valve (externally). 119. SEM of a girdle view. 120. SEM of internal valve view. 121. SEM of an entire valve (externally). LM scale bar = 10 μm. SEM scale bars = 5 μm.

FIGURES 60–79 in Morphological and taxonomical analysis of the terrestrial diatom genus Humidophila (Bacillariophyta) on Ile Amsterdam and Ile Saint-Paul (Southern Indian Ocean)

FIGURES 60–79. Humidophila gallica (W.Smith) R.L. Lowe et al. Light (LM) and scanning electron micrographs (SEM). 60. LM of a girdle view of two frustules, connected by linking spines. 61–75. LM of valve face views. 76. SEM of an entire valve (externally). 77. SEM valve (internally). 78. SEM valve (internally) and SEM of a valve with marginal spines (externally). 79. SEM of an entire valve (externally). LM scale bar = 10 μm. SEM scale bars = 1 μm.

FIGURES 18–38 in Morphological and taxonomical analysis of the terrestrial diatom genus Humidophila (Bacillariophyta) on Ile Amsterdam and Ile Saint-Paul (Southern Indian Ocean)

FIGURES 18–38. Humidophila contenta (Grunow) R.L.Lowe et al. Light (LM) and scanning electron micrographs (SEM). 18–19. LM of a girdle view. 20–34. LM of valve views showing variation in size. 35. SEM of an entire valve (externally). 36. SEM of a girdle view. 37–38. SEM of an entire valve (externally). Note the proximal and distal raphe endings showing small depressions next to the raphe pores. LM scale bar = 10 μm. SEM scale bars = 1 μm.

FIGURES 39–59 in Morphological and taxonomical analysis of the terrestrial diatom genus Humidophila (Bacillariophyta) on Ile Amsterdam and Ile Saint-Paul (Southern Indian Ocean)

FIGURES 39–59. Humidophila crozetikerguelensis (Le Cohu & Van de Vijver) R.L.Lowe et al. Light (LM) and scanning electron micrographs (SEM). 39–55. LM of valve views.

FIGURES 1–17 in Morphological and taxonomical analysis of the terrestrial diatom genus Humidophila (Bacillariophyta) on Ile Amsterdam and Ile Saint-Paul (Southern Indian Ocean)

FIGURES 1–17. Humidophila brekkaensis (Petersen) R.L.Lowe et al. Light (LM) and scanning electron micrographs (SEM). 1–13. LM of valve views. 14. SEM of an entire valve (externally). 15. SEM girdle view. 16–17. SEM of an entire valve (externally). Note the mantle areolae positioned on the same level as the areolae of the valve face. LM scale bar = 10 μm. SEM scale bars = 5 μm, 1

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.

opencc-by-nc-4.0Jan 2021View details →

Tree-ring data from panel painting Cadmus sawing dragon's teeth (SK-A-4051) of the Rijksmuseum (Amsterdam, The Netherlands)

This dataset comprises raw tree-ring series (ring widths) measured with CooRecorder (Cybis Elektronik & Data AB) from 15 X-ray computed tomography (CT) images obtained at the FleXray Laboratory of the Centrum Wiskunde & Informatica in Amsterdam from the oak (Quercus sp.) back panel of the Cadmus sawing dragon's teeth painting (Rijksmuseum <a href="http://hdl.handle.net/10934/RM0001.COLLECT.5320">http://hdl.handle.net/10934/RM0001.COLLECT.5320</a>). The CT images have been uploaded into Zenodo as three separate datasets: Dataset1: 10.5281/zenodo.4334010 Dataset2: 10.5281/zenodo.4336495 Dataset3: 10.5281/zenodo.4338421 Besides the individual tree-ring series obtained from each image, the average curve resulting from merging them has also been included in this dataset (keycode Cadmus). It covers the span 1380-1548. For more information refer to the published article DOI 10.1371/journal.pone.0255792 .

Figure 2. Asterocheres halichondriae Stock, 1966 in Redescription of five Asterocheres species (Copepoda: Siphonostomatoida) and a description of a new species discovered in the collections of the Zoological Museum of Amsterdam

Figure 2. Asterocheres halichondriae Stock, 1966, holotype (female). (A) Mandible; (B) maxillule; (C) maxilla; (D) maxilliped; (E) antennule; (F) antenna. Asterocheres halichondriae, male. (G) Antennule.

Figure 6. Asterocheres proboscideus Stock, 1966 in Redescription of five Asterocheres species (Copepoda: Siphonostomatoida) and a description of a new species discovered in the collections of the Zoological Museum of Amsterdam

Figure 6. Asterocheres proboscideus Stock, 1966, holotype (female). (A) Mandibular palp; (B) antennule; (C) maxillule; (D) maxilla; (E) antenna.

Figure 7. Asterocheres scutatus Stock, 1966 in Redescription of five Asterocheres species (Copepoda: Siphonostomatoida) and a description of a new species discovered in the collections of the Zoological Museum of Amsterdam

Figure 7. Asterocheres scutatus Stock, 1966, holotype (female). (A) Mandible; (B) maxillule; (C) maxilla; (D) antenna.

Figure 3 in Redescription of five Asterocheres species (Copepoda: Siphonostomatoida) and a description of a new species discovered in the collections of the Zoological Museum of Amsterdam

Figure 3. Asterocheres hoi, sp. nov. (female). (A) Dorsal view; (B) urosome, dorsal view; (C) antennule; (D) antenna; (E) mandible; (F) maxillule; (G) maxilla; (H) maxilliped; (I) leg 5.

Figure 5. Asterocheres maxillatus Stock, 1987 in Redescription of five Asterocheres species (Copepoda: Siphonostomatoida) and a description of a new species discovered in the collections of the Zoological Museum of Amsterdam

Figure 5. Asterocheres maxillatus Stock, 1987, holotype (female). (A) Antenna; (B) maxillule; (C) maxilla; (D) mandible; (E) maxilliped.