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Hantzschia Amphioxys
''Hantzschia amphioxys'' is a species of diatom belonging to the family Bacillariaceae. It has cosmopolitan distribution In biogeography, a cosmopolitan distribution is the range of a taxon that extends across most or all of the surface of the Earth, in appropriate habitats; most cosmopolitan species are known to be highly adaptable to a range of climatic and en .... References Bacillariales {{diatom-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diatom
A diatom (Neo-Latin ''diatoma'') is any member of a large group comprising several Genus, 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 (ecology), 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 Protist shell, shells of dead diatoms are a significant component of marine sediment, and the entire Amazon basin is fertilized annually by 27 million tons of diatom shell dust transported by transatlantic winds from the African Sahara, much of it from the Bodélé Depression, which was once made up of a system of fresh-water lakes. Diatoms are unicellular organisms: they occur either as solitary cells or in Colony (biology), colonies, which can take the shape of ribb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bacillariaceae
Bacillariaceae is a family of diatoms, the only family in the order Bacillariales. Some species of genera such as '' Nitzchia'' are found in halophilic environments; for example, in the seasonally flooded Makgadikgadi Pans in Botswana. Genera This family includes these genera: *'' Allonitzschia'' (1) *'' Bacillaria'' Gmelin (155) *'' Crucidenticula'' (8) *'' Cylindrotheca'' Rabenh. *'' Cymbellonitzschia'' Hustedt in A.Schmidt et al. (7) *'' Denticula'' Kütz. (178) *'' Denticulopsis'' R. Simonsen and T. Kanaya, 1961 (20) *'' Fragilariopsis'' Hustedt in A. Schmidt (41) *'' Gomphonitzschia'' (14) *'' Grunowia'' (19) *'' Hantzschia'' Grunow, 1877 (258) *'' Neodenticula'' Akiba and Yanagisawa, 1986 (2) *''Nitzschia'' Hassall, 1845 (2k) *'' Nitzschiella'' (18) *'' Ophidocampa'' (15) *'' Perrya'' (7) *'' Psammodictyon'' (5) *''Pseudo-nitzschia'' H. Perag. and Perag., 1900 (81) *'' Simonsenia'' (3) *'' Tryblionella'' W.Sm., 1853 (103) Figures in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cosmopolitan Distribution
In biogeography, a cosmopolitan distribution is the range of a taxon that extends across most or all of the surface of the Earth, in appropriate habitats; most cosmopolitan species are known to be highly adaptable to a range of climatic and environmental conditions, though this is not always so. Killer whales ( orcas) are among the most well-known cosmopolitan species on the planet, as they maintain several different resident and transient (migratory) populations in every major oceanic body on Earth, from the Arctic Circle to Antarctica and every coastal and open-water region in-between. Such a taxon (usually a species) is said to have a ''cosmopolitan'' distribution, or exhibit cosmopolitanism, as a species; another example, the rock dove (commonly referred to as a ' pigeon'), in addition to having been bred domestically for centuries, now occurs in most urban areas around the world. The extreme opposite of a cosmopolitan species is an endemic (native) species, or one foun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
