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Trachyneis aspera is a species of diatoms in the family Naviculaceae. They are native to Rio Grande Do Sul, Santa Catarina, Maranhao, Rio Grande Do Norte, Paraná, and SãO Paulo. Dead Trachyneis aspera form siliceous oozes.

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  • URI: http://purl.obolibrary.org/obo/ENVO_02000044
  • Definition: Siliceous ooze is a marine sediment composed of the debris of plankton with silica shells, such as diatoms and radiolaria. This ooze is limited to areas with high biological productivity, such as the polar oceans, and upwelling zones near the equator. The least common type of sediment, it covers only 15% of the ocean floor. It accumulates at a slower rate than calcareous ooze: 0.2-1 cm / 1000 yr.
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EOL has data for 27 attributes, including:

Known occurrences, collected specimens and observations of Trachyneis aspera (Ehrenberg) Cleve 1894. View this species on GBIF