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Grove, O, Galicia, Spain
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Pra, Faro, Portugal
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Chaetoceros diadema.Chain with vegetative cells resting spores. Scale bar indicates 100 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.
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Thalassiosira punctigera.Some specimen of this centric diatom carried naviculoid ones on the valve(s). Scale bar indicates 25 m. The image was built up using several photomicrographic frames with manual stacking technique. Sample from North Sea near Heligoland (spring diatom bloom). 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.
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Grvalos, La Rioja, Spain
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Thalassiosira lundiana.Labiate processes and chitinous spines are visible. Scale bar indicates 25 m. The image was built up using several photomicrographic frames with manual stacking technique. Sample from North Sea near Heligoland (spring diatom bloom). 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.
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Acanthoceras spec.Scale bar indicates 50 m. The specimen was gathered in the wetlands of Oderbruch (Oder valley 100 km north east of Berlin). 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.
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Described by Stein in 1844. Specimen from the Bay of Villefranche in March 2014. Z-stack of images made using a 40x objective and DIC optics.
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Thalassiosira rotula.The members of the colony are interconnected with a bundle of threads. Numerous delicate spines protruding from the valve's margin are visible. Scale bar indicates 50 m. The image was built up using several photomicrographic frames with manual stacking technique. Sample from North Sea near Heligoland (spring diatom bloom). 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.
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Coscinodiscus wailesii.Valvar view. Insets showing marginal ring of labiate processes (upper right) and the hyaline central area (lower left). Scale bar indicates 100 m. Sample from North Sea near Heligoland (spring diatom bloom). The image was built up using several photomicrographic frames with manual stacking and stitching 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..
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Melosira moniliformis.Colony with epibiotic bacteria chains. Scale bar indicates 25 m. The image was built up using several photomicrographic frames with manual stacking technique. Sample from North Sea near Heligoland (spring diatom bloom). 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.
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D. fragilissimus forms loosely connected chains. The cells bear processes on the valve end which fit into depressions on the adjacent cell. It is often found together with Leptocylindrus danicus and Guinardia delicatula
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Melosira varians together with Mougeotia and Chlamydomonas. The scale bar indicates 50 µm. The specimen was gathered in the wetlands of Oderbruch (Oder valley 100 km north east of Berlin). 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).
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Marginal silica processes are visible. Scale bar indicates 25 µm. The image was built up using several photomicrographic frames with manual stacking technique. Sample from North Sea near Heligoland (spring diatom bloom). Images were taken using Zeiss Universal with Olympus C7070 CCD camera.
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Chaetoceros socialis (key-toss-err-oss sew-see-ah-liss), a centric diatom in with long spines. In this species dozens or hundreds of cells are linked loosely together by their spines. Common in marine ecosystems. Phase contrast.
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Chain of Porosira glacialis. Note that the delicate spines are chitinous. Focus on cell center showing cytoplasmic accumulation around the nucleus. Scale bar indicates 50 µm. The image was built up using several photomicrographic frames with manual stacking technique. Sample from North Sea near Heligoland (spring diatom bloom). Images were taken using Zeiss Universal with Olympus C7070 CCD camera.
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Scanning electron micrograph of interior of scutate valve. Note position of fultoportula in central area of valve face. Specimen from culture of cell isolated from Cleveland Harbor, Cleveland, OH, USA, by E. Theriot.
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Valves are cylindrical terminating in a proboscis. Processes are absent. This is a temprate, coastal species.
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Grove, O, Galicia, Spain
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Grove, O, Galicia, Spain
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Scale bar indicates 100 m. The image was built up using several photomicrographic frames with manual stacking technique. Sample from North Sea near Heligoland (spring diatom bloom). 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.
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Long chain of Porosira glacialis. Note that the delicate spines are chitinous. Scale bar indicates 100 m. The image was built up using several photomicrographic frames with manual stacking technique. Sample from North Sea near Heligoland (spring diatom bloom). 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.
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Grove, O, Galicia, Spain
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Grove, O, Galicia, Spain