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Attheya Decora
''Attheya decora'' is a species of diatoms in the genus ''Attheya''. Type material was collected from Cresswell sands, Northumberland Northumberland () is a ceremonial counties of England, county in Northern England, one of two counties in England which border with Scotland. Notable landmarks in the county include Alnwick Castle, Bamburgh Castle, Hadrian's Wall and Hexham Ab ... by Mr. Atthey.West, T. 1860. Remarks on some Diatomaceae, new or imperfectly described and a new Desmid. Transactions of the Microscopical Society, New Series, London 8:147-153, pl. 7. References External linksINA card Species described in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diatom
A diatom (New Latin, Neo-Latin ''diatoma''), "a cutting through, a severance", from el, διάτομος, diátomos, "cut in half, divided equally" from el, διατέμνω, diatémno, "to cut in twain". 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 the 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 metric tons 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 can reach as much as a half-mile (800 m) deep on the ocean floor, 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 Dep ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Attheya
''Attheya'' is a genus of small single celled diatoms. Some of these species were earlier regarded to belong to ''Chaetoceros'', or to '' Gonioceros'', the taxonomic status of some of these species are still debated.Crawford, R.M., Hinz, F. and Koschinski, P. 2000. The combination of ''Chaetoceros gaussii'' (Bacillariophyta) with ''Attheya''. Phycologia 39(3):238-244. Description They are distinguished morphologically from ''Chaetoceros'' by the structure of valve outgrowths or girdle bands. The girdle bands can only be seen with an electron microscope.Crawford, R. M., Gardner, C., Medlin, L. K. 1994. The genus ''Attheya''. I. A description of four new taxa, and the transfer of ''Gonioceros septentrionalis'' and ''G. armatus''. ''Diatom research''. 9:27-51. Resting spores are seldom observed. Vegetative cells tend to attach to different substrates, including other diatoms,Tomas, C. R., Hasle G. R., Syvertsen, E. E., Steidinger, K. A., Tangen, K., Throndsen, J., Heimdal, B. R., (19 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cresswell, Northumberland
Cresswell is a village in Northumberland, England. It is about to the north of Ashington, on the North Sea coast. History The place-name 'Cresswell' is first attested in the Close Roll for 1234, where it appears as ''Kereswell''. It appears as ''Cressewell'' in 1242 in the Book of Fees. The name means 'stream where water cress grew'. Between 1875 and 1944, Cresswell village had a lifeboat. The lifeboat crews were successful in saving 91 lives, and the lifeboat station still stands. During the Second World War, the Royal Air Force operated two radar sites south of the village on the road to Lynemouth. Both sites have since been cleared and have no above ground evidence of previous activity. Cresswell is a popular bird watching area with Cresswell pond and bird hide nearby and the Druridge Bay Country Park less than away. The village has one ice cream shop which closes out of season, and a café on the beach just to the north of the village, open year-round. The villa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Northumberland
Northumberland () is a ceremonial counties of England, county in Northern England, one of two counties in England which border with Scotland. Notable landmarks in the county include Alnwick Castle, Bamburgh Castle, Hadrian's Wall and Hexham Abbey. It is bordered by land on three sides; by the Scottish Borders, Scottish Borders region to the north, County Durham and Tyne and Wear to the south, and Cumbria to the west. The fourth side is the North Sea, with a stretch of coastline to the east. A predominantly rural area, rural county with a landscape of moorland and farmland, a large area is part of Northumberland National Park. The area has been the site of a number of historic Anglo-Scottish wars, battles with Scotland. Name The name of Northumberland is recorded as ''norð hẏmbra land'' in the Anglo-Saxon Chronicle, meaning "the land north of the Humber". The name of the kingdom of ''Northumbria'' derives from the Old English meaning "the people or province north of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species Described In 1860
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes in zoological ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
