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Gerona, Castille and Leon, Spain
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Ajamil, La Rioja, Spain
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Hoyo de Manzanares, Madrid, Spain
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Villoslada de Cameros, La Rioja, Spain
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Canencia, Madrid, Spain
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Ribadelago de Franco, Castille and Leon, Spain
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Villoslada de Cameros, La Rioja, Spain
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Amer, La Rioja, Spain
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Lumbreras, La Rioja, Spain
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Ribadelago de Franco, Castille and Leon, Spain
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Lumbreras, La Rioja, Espaa
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Villoslada de Cameros, La Rioja, Spain
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A new desmid, (Cosmarium?) that recently appeared in the plankton of Lake Kinneret. Methylene blue staining shows a âhallowâ of thin mucilaginous strands extending out of the cell.
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Micrasterias americana (EHR.) RALFS. Length 130 - 150 µm, width 100 - 120 µm. Not rare both in lowlands and in alpine waters, sometimes abundant.
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Cosmarium quadrum P. LUNDELL The cells are a little longer than wide, rounded off rectangular in shape. The sides are straight or flat convex. The central cuts are deep, linear, and extended outwards. The cell wall is covered with warts. They run in crossing rows (under an angle of appr. 45°). Around each of the warts are pores, which build symmetrical hexagon in their arrangement. Length 55 - 85 µm, width 50 - 80 µm. Occurrence: Common in littoral region and quaking bogs of moor ponds and in moderate acidic moorlands in Central Europe.
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Scale bar indicates 25 µm.Sample from the pond Hegne Moor situated in the vicinity of 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).
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Vitoria, Basque Country, Spain
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Amer, La Rioja, Spain
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Ribadelago, Castille and Leon, Spain
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San Martn de Castaeda, Castilla y Len, Espaa
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Galende, Castille and Leon, Spain
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Logrono, La Rioja, Spain
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Ribadelago de Franco, Castille and Leon, Spain
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Ribadelago, Castille and Leon, Spain