Fragilariophycidae

Cells are heteropolar with a triangular foot pole which narrows into a thin extension. Cells are connected by the valve faces of the foot poles into chains which are often star-shaped. A. glacialis can form extensive blooms. A. glacialis is a cosmpolitan species.

Licmophora juergensii living together with other araphid diatoms, peritrich ciliates and filamentous cyanobacteria on a red alga. They use jelly stalks for fixation on the substratum. Collected from Bodden, the brackish waters lying between the isles of Hiddensee and Ruegen (German Baltic Sea). This image was taken using Zeiss Universal with Olympus C7070 CCD camera. 

The cells in this diatom are attached side by side to form long curving belts or ribbons. The chloroplasts adhere to the walls where the cells join together. Differential interference contrast.

of the colonial diatom, Asterionella formosa (Hassall, 1850). The linear frustules have expanded ends. The frustules of the colony are connected by gelatinous cushions at the larger of their two ends in a radial array all in more or less the same plane The yellow chloroplasts are seen here. Blooms of this diatom may impart a disagreeable fishy taste to fresh water. Collected from freshwater pond near Boise, Idaho January 2003. Phase contrast illumination.

Cell accompanied by epibiotic flagellates. Scale bar indicates 50 µm. Sample from the Federsee near Lake Constance. 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).

Benissa, Valencia, Spain

O Grove, Galicia, Spain

Altea, Valencia, Spain

Talveila, Castilla y Len, Espaa

Centronella reicheltii. Scale bar indicates 50 m.Sample from the Federsee near Lake Constance. The image was built up using several photomicrographic frames with manual stacking technique. Images were taken using Zeiss Universal with Olympus C7070 CCD camera.For more look at www.protisten.de/english/gallery_main/gallery_main.htmlFor high-resolution images please ask postmaster@protisten.de..

Pereiria, Galicia, Spain

Arnedo, La Rioja, Spain

Santa Cruz de la Sierra, Extremadura, Spain

Colony of Diatoma vulgare. The mucilaginous connection material is shown. Scale bar indicates 50 m.Sample from Lake Constance near Bodman. Images were taken using Zeiss Universal with Olympus C7070 CCD camera.For more look at www.protisten.de/english/gallery_main/gallery_main.htmlFor high-resolution images please ask postmaster@protisten.de.

Muelas del Pan, Castille and Leon, Spain

Fragilaria islandica.Cingular view. Scale bar indicates 50 m. Sample from North Sea near Heligoland (spring diatom bloom). The image was built up using several photomicrographic frames with manual stacking technique. Images were taken using Zeiss Universal with Olympus C7070 CCD camera.For more look at www.protisten.de/english/gallery_main/gallery_main.htmlFor high-resolution images please ask postmaster@protisten.de.

Galende, Castile and Len, Spain

Rhabdonema arcuatum.Scale bar indicates 100 m. The image was built up using several photomicrographic frames with manual stacking technique. Sample from North Sea near Heligoland (Aufwuchs on red alga Ceramium spec.). Images were taken using Zeiss Universal with Olympus C7070 CCD camera.For more look at www.protisten.de/english/gallery_main/gallery_main.htmlFor high-resolution images please ask postmaster@protisten.de.

Miranda do Douro Municipality, Braganca, Portugal

Vallibona, Valencia, Spain

San Martin De Castaneda, Castille and Leon, Spain

Thalassionema nitzschioides The specimen was gathered in the Kieler Förde (German Baltic Sea). Scale bar indicates 50 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 50 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.

Asterionella spec. Scale bar indicates 50 µm. The specimen was gathered in the Kieler Förde (German Baltic Sea). Sampling date 4/2018. 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: Baltic Sea, Kieler Förde, Kiel Fjord (Germany) Latitude: 54,3894126 Longitude: 10,1749055 Multiebenen-Abbildung, manuell gestapelt. Der Messbalken markiert eine Länge von 50 µm. Probe aus der Kieler Förde. Datum der Aufsammlung: 4/2018. 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.