-
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.
-
-
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).
-
-
Guadalix de la Sierra, Madrid, 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..
-
Matute, La Rioja, Spain
-
Arnedo, La Rioja, Spain
-
Casas de la Dehesilla, Madrid, 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.
-
Talamanca, Catalonia, Spain
-
Muelas del Pan, Castille and Leon, Spain
-
Ribadelago de Franco, Castilla y Len, Espaa
-
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
-
Miranda do Douro Municipality, Braganca, Portugal
-
Helical arranged cell colony. Differential interference contrast.Scale bar indicates 50 µm. 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.
-
-
Filaments of Fragilaria, a pennate diatom in which the valves of adjacent cells are joined by small hooks to form long tough filaments. Dark ground illumination.
-
Olvega, Castilla y Len, Espaa
-
Santo Domingo de Silos, Castille and Leon, Spain