Bacillariaceae

Morphological details of P. australis

TEMmicrograph showing central part of valve with central nodule, raphe canal with fibulae crossing, and striae with one row of poroids, each divided in several sectors.

Culture based on material from La Gomera, Canary Islands

(A) Light micrographs. (B–L) TEM micrographs. (A) Whole valve. (B and C) Complete valve of different shapes. (D) Detail of the central nodule and striae with a row of poroids split in several sectors. (E) Apical part of a valve. (F) Central part of a valve showing the central nodule, the poroid arrangement, and the proximal and distal mantles. (G) Detail of the poroid structure. (H and L) Detail of the valvocopula. (I–K) Different cingular bands. (A–C, F–H, J, and K) Strain Ner-F1. (D) Strain Ner-J6. (E, I and L) Strain Ner-G4.

(A and B) Light micrographs. (C–M) TEM micrographs. (A and B) Whole valves. (C and D) Part of the cell in valve view. (E) Detail of the central part of a valve showing the central nodule and the striae with a row of poroids split into two sectors (seldom three or four). (F) Part of a valve showing the central nodule and the poroid arrangement. (G) Detail of the poroid structure. (H) Central part of a valve. (I) Apical part of a valve showing the proximal and distal mantles. (J) Valve end. (K) Valvocopula. (L and M) Different cingular bands. (A–D, G–L) Strain Ner-J2. (E, F, and M) Strain Ner-J3.

Original nib drawing made by Frenguelli.

Original nib drawing made by Frenguelli.

Original nib drawing made by Frenguelli.

Original nib drawing made by Frenguelli.

Original nib drawing made by Frenguelli.

Nitzschia sigmoidea Cingular view. Scale bar indicates 100 µm. Sample from a wetland at the Pillersee (Tyrol, Austria). The image was built up using several photomicrographic frames with manual stacking technique. Images were taken using Zeiss Universal with Olympus C7070 CCD camera.Image under Creative Commons License V 3.0 (CC BY-NC-SA). Place name: Pond Suploch, Hiddensee (Germany) Latitude: 54.538638 Longitude: 13.097802 Gürtelbandansicht. Multiebenen-Abbildung, manuell gestapelt. Der Messbalken markiert eine Länge von 100 µm. Probe aus dem Pillersee in Tirol. Mikrotechnik: Zeiss Universal, Kamera: Olympus C7070. Creative Commons License V 3.0 (CC BY-NC-SA). For permission to use of (high-resolution) images please contact postmaster@protisten.de.

Nitzschia sigmoidea Detail: Center of the cell in cingular view with nucleus, cloroplasts with oil droplets (energy store) and the canal raphes. Scale bar indicates 25 µm. Sample from a wetland at the Pillersee (Tyrol, Austria). The image was built up using several photomicrographic frames with manual stacking technique. Images were taken using Zeiss Universal with Olympus C7070 CCD camera.Image under Creative Commons License V 3.0 (CC BY-NC-SA). Place name: Pond Suploch, Hiddensee (Germany) Latitude: 54.538638 Longitude: 13.097802 Detail: Zellmitte in Gürtelbandansicht mit Zellkern, den Chloroplasten mit Öltröpfchen (Speicherstoff) und den beiden Kanalraphen. Multiebenen-Abbildung, manuell gestapelt. Der Messbalken markiert eine Länge von 25 µm. Probe aus dem Pillersee in Tirol. Mikrotechnik: Zeiss Universal, Kamera: Olympus C7070. Creative Commons License V 3.0 (CC BY-NC-SA). For permission to use of (high-resolution) images please contact postmaster@protisten.de.

Nitzschia sigmoidea Cingular view. Scale bar indicates 100 µm. Sample from the Domänental pond near Kronshagen (Kiel, Germany). The image was built up using several photomicrographic frames with manual stacking technique. Images were taken using Zeiss Axioplan with Olympus OM-D M5 MKII.Image under Creative Commons License V 3.0 (CC BY-NC-SA). Place name: Pond Domänental near Kronshagen (Kiel, Germany) Latitude: 54.33211 Longitude: 10.060821 Gürtelbandansicht. Multiebenen-Abbildung, manuell gestapelt. Der Messbalken markiert eine Länge von 100 µm. Probe aus dem Domänentalteich bei Kronshagen. Mikrotechnik: Zeiss Axioplan, Kamera: Olympus OM-D M 5 MKII. Creative Commons License V 3.0 (CC BY-NC-SA). For permission to use of (high-resolution) images please contact postmaster@protisten.de.

Nitzschia sigmoidea Detail: Apex in cingular view, displaying cingulum (central strae and the two canal raphes on the edges. Scale bar indicates 25 µm. Sample from a wetland at the Pillersee (Tyrol, Austria). The image was built up using several photomicrographic frames with manual stacking technique. Images were taken using Zeiss Universal with Olympus C7070 CCD camera.Image under Creative Commons License V 3.0 (CC BY-NC-SA). Place name: Pond Suploch, Hiddensee (Germany) Latitude: 54.538638 Longitude: 13.097802 Detail: Zellspitze in Gürtelbandansicht. Das Gürtelband ist zentral als feine Striche zu erkennen, an den Außenkanten sind die Kanalraphen zu sehen. Multiebenen-Abbildung, manuell gestapelt. Der Messbalken markiert eine Länge von 25 µm. Probe aus dem Pillersee in Tirol. Mikrotechnik: Zeiss Universal, Kamera: Olympus C7070. Creative Commons License V 3.0 (CC BY-NC-SA). For permission to use of (high-resolution) images please contact postmaster@protisten.de.

Nitzschia gracilis Scale bar indicates 25 µm. Sample from the Lake Vollstedter See near Kiel, Germany. Sampling date 7/2018. The image was built up using several photomicrographic frames with manual stacking technique. Images were taken using Zeiss Axioplan with Olympus OM-D M5 MKII. Image under Creative Commons License V 3.0 (CC BY-NC-SA). Place name: Lake Vollstedter See near Kiel (Germany) Latitude: 54.24105528 Longitude: 9.859339 Multiebenen-Abbildung, manuell gestapelt. Der Messbalken markiert eine Länge von 25 µm. Probe aus dem Vollstedter See bei Groß Vollstedt. Datum der Aufsammlung: 7/2018. Mikrotechnik: Zeiss Axioplan, Kamera: Olympus OM-D M5 MKII. Creative Commons License V 3.0 (CC BY-NC-SA). For permission to use of (high-resolution) images please contact postmaster@protisten.de.

Pseudo-nitzschia delicatissima The specimen was gathered in the Kieler Förde (German Baltic Sea). Scale bar indicates 25 µm. The image was built up using several photomicrographic frames with manual stacking technique. Images were taken using Zeiss Axioplan with MFT camera Olympus OM-D E-M5 II.Image under Creative Commons License V 3.0 (CC BY-NC-SA). Place name: Baltic Sea, Kieler Förde, Kiel Fjord (Germany) Latitude: 54.3894126 Longitude: 10.1749055 Multiebenen-Abbildung, manuell gestapelt. Der Messbalken markiert eine Länge von 25 µm. Probe aus der Kieler Förde. Mikrotechnik: Zeiss Axioplan Kamera: Olympus OM-D M5 MKII.Creative Commons License V 3.0 (CC BY-NC-SA). For permission to use of (high-resolution) images please contact postmaster@protisten.de.

Nitzschia spec. Zoom on keel arcs of Nitzschias special fibulate raphe system. It´s a cingular view with girdle bands in the middle. Scale bar indicates 10 µm. Digital drawing using 12 frames generating depth of focus, stacked manually. The specimen was gathered in a tiny freshwater pond at the island of Hiddensee (Baltic Sea, Germany) which shows a fascinating biodiversity of naked and testate amoebae. Images were taken using Zeiss Standard with Olympus C7070 CCD camera.Image under Creative Commons License V 3.0 (CC BY-NC-SA). Place name: Pond Suploch, Hiddensee (Germany) Latitude: 54.538638 Longitude: 13.097802 Ausschnittsvergrößerung der Kielbögen der Kanalraphe von Nitzschia spec. in Gürtelbandansicht. Multiebenen-Abbildung, manuell gestapelt. Der Messbalken markiert eine Länge von 10 µm. Probe aus einen Kleingewässer auf Hiddensee. Mikrotechnik: Zeiss Universal, Kamera: Olympus C7070.Creative Commons License V 3.0 (CC BY-NC-SA). For permission to use of (high-resolution) images please contact postmaster@protisten.de.

Nitzschia spec. Nitzschia spec. with large cells. The insets show overlaping of epi- and hypotheca, the girdle band and keel arcs of the fibulate raphe system and a Chlamydomonas like green flagellate. Scale bar indicates 100µm. Digital drawing using 35 frames generating depth of focus, stacked manually. The specimen was gathered in a tiny freshwater pond at the island of Hiddensee (Baltic Sea, Germany) which shows a fascinating biodiversity of naked and testate amoebae. Images were taken using Zeiss Standard with Olympus C7070 CCD camera.Image under Creative Commons License V 3.0 (CC BY-NC-SA). Place name: Pond Suploch, Hiddensee (Germany) Latitude: 54.538638 Longitude: 13.097802 Nitzschia spec. mit sehr großen Zellen. Die vergrößerten Bildausschnitte zeigen die Überlappungszonen von Epi- and Hypotheca, das Gürtelband und die Kielbögen der Kanalraphe zusammen mit einem grünen Flagellaten (Chlamydomonas). Multiebenen-Abbildung, manuell gestapelt. Der Messbalken markiert eine Länge von 100 µm. Probe aus einen Kleingewässer auf Hiddensee. Mikrotechnik: Zeiss Universal, Kamera: Olympus C7070.Creative Commons License V 3.0 (CC BY-NC-SA). For permission to use of (high-resolution) images please contact postmaster@protisten.de.