Diatoms

A diatom (Neo-Latin diatoma) is any member of a large group comprising several genera of algae, specifically microalgae, found in the oceans, waterways and soils of the world. Living diatoms make up a significant portion of Earth's biomass. They generate about 20 to 50 percent of the oxygen produced on the planet each year, take in over 6.7 billion tonnes of silicon each year from the waters in which they live, and constitute nearly half of the organic material found in the oceans. The shells of dead diatoms are a significant component of marine sediment, and the entire Amazon basin is fertili

The order Pennales is a proposed traditional subdivision of the heterokont algae known as diatoms. The order is named for the shape of the cell walls (or valves or frustules) of pennate diatoms, which are elongated in valve view. The valves may be linear or oval in shape, and usually bear bilaterally symmetrical ornamental patterns. These patterns are composed of a series of transverse lines (known as striae) that can appear as rows of dots when viewed with an optical microscope. Some pennate diatoms also exhibit a fissure along their longitudinal axis. This is known as a raphe, and is involve

Bacillariophyceae is a class of diatoms. Previously, this class was equivalent to Diatomeae, the taxonomic name for all diatoms. However, due to both the known and estimated diversity of diatoms, since 2019 they have been expanded to several classes. In particular, Bacillariophyceae was given the following modified diagnosis:

Diatoma is a genus of diatoms belonging to the family Fragilariaceae.

Epithemia is a genus of diatoms belonging to the family Rhopalodiaceae. The genus has cosmopolitan distribution and are found in freshwater and marine ecosystems. Recent studies have proposed that the genus Rhopalodia should be recategorized to join Epithemia based on phylogenetic evidence, although this change in nomenclature has been disputed or ignored.

Aulacoseira is a genus of diatoms belonging to the family Aulacoseiraceae.

genus of algae

Asterionellopsis is a genus of diatoms belonging to the family Asterionellopsidaceae.

Amphiprora is a genus of diatoms belonging to the family Amphipleuraceae.

Rhizosoleniaceae is a family of diatoms belonging to the order Rhizosoleniales.

REDIRECT Aulacoseiraceae