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Aberdeen Township, New Jersey |
Aberdeen, North Carolina |
Aberdeen Historic District (Aberdeen, North Carolina) |
Aberdeen, Ohio |
Aberdeen, South Dakota |
Aberdeen Historic District (Aberdeen, South Dakota) |
Aberdeen, Texas |
Aberdeen (Disputanta, Virginia) |
Aberdeen Gardens (Hampton, Virginia) |
Aberdeen, Washington |
Aberdeen Gardens, Washington |
Aberdeen, West Virginia |
Business |
Abrdn, formerly Standard Life Aberdeen |
Aberdeen Asset Management |
Education |
Aberdeen Business School |
Aberdeen College, formerly one of the largest further education colleges in Scotland, merged with Banff & Buchan College to form North East Scotland College |
Aberdeen Grammar School, Aberdeen, Scotland |
Aberdeen Hall, a university-preparatory school in Kelowna, British Columbia, Canada |
Aberdeen High School (disambiguation) |
King's College, Aberdeen |
University of Aberdeen, a public research university in the city of Aberdeen |
Entertainment |
Aberdeen (2000 film), a 2000 Norwegian-British film directed by Hans Petter Moland, starring Stellan Skarsgård and Lena Headey |
Aberdeen (2014 film), a 2014 Hong Kong film starring Louis Koo |
Aberdeen (band), an American rock band |
Aberdeen (song), a song by Cage The Elephant |
Aberdeen City (band), Boston based indie/alternative rock band |
Other transportation |
Aberdeen Airport (disambiguation) |
Aberdeen Lock and Dam, one of four lock and dam structures on the Tennessee-Tombigbee Waterway |
Rail |
Aberdeen, Carolina and Western Railway, a short-line railroad operating in North Carolina |
Aberdeen and Rockfish Railroad, a short-line railroad operating in North Carolina |
Aberdeen Corporation Tramways |
Aberdeen Line (disambiguation) |
Aberdeen station (disambiguation) |
Dundee and Perth and Aberdeen Junction Railway, a later name of the Dundee and Perth Railway |
Shipping |
Aberdeen Line, a British shipping company founded in 1825 |
, one of several ships by that name |
, a sloop of the British Royal Navy that served between 1936 and 1948 |
, a merchant ship operated during the latter stages of World War II, later commissioned as the USS Altair |
Sports |
Aberdeen Dad Vail Regatta, the largest regular intercollegiate rowing event in the United States, named after its sponsor, Aberdeen Asset Management |
Aberdeen F.C. (disambiguation) |
Aberdeen GSFP RFC, an amateur rugby union club based in Aberdeen |
Aberdeen IronBirds, a minor league baseball team affiliated with the Baltimore Orioles |
Aberdeen L.F.C., a women's football team affiliated with Aberdeen F.C. |
See also |
Aberdeen Act |
Aberdeen Angus, a Scottish breed of small beef cattle |
Aberdeen Central (disambiguation) |
Aberdeen Gardens (disambiguation) |
Aberdeen Historic District (disambiguation) |
Aberdeen Hospital (disambiguation) |
Aberdeen Quarry, a granite quarry in Colorado |
Battle of Aberdeen (disambiguation) |
Diocese of Aberdeen and Orkney, one of the seven dioceses of the Scottish Episcopal Church |
Etymology of Aberdeen |
Marquess of Aberdeen and Temair, a title in the Peerage of the United Kingdom Algae (; singular alga ) is an informal term for a large and diverse group of photosynthetic eukaryotic organisms. It is a polyphyletic grouping that includes species from multiple distinct clades. Included organisms range from unicellular m... |
No definition of algae is generally accepted. One definition is that algae "have chlorophyll as their primary photosynthetic pigment and lack a sterile covering of cells around their reproductive cells". Likewise, the colorless Prototheca under Chlorophyta are all devoid of any chlorophyll. Although cyanobacteria are o... |
Algae constitute a polyphyletic group since they do not include a common ancestor, and although their plastids seem to have a single origin, from cyanobacteria, they were acquired in different ways. Green algae are examples of algae that have primary chloroplasts derived from endosymbiotic cyanobacteria. Diatoms and br... |
Algae lack the various structures that characterize land plants, such as the phyllids (leaf-like structures) of bryophytes, rhizoids of nonvascular plants, and the roots, leaves, and other organs found in tracheophytes (vascular plants). Most are phototrophic, although some are mixotrophic, deriving energy both from ph... |
Because of the wide range of types of algae, they have increasing different industrial and traditional applications in human society. Traditional seaweed farming practices have existed for thousands of years and have strong traditions in East Asia food cultures. More modern algaculture applications extend the food trad... |
Etymology and study |
The singular is the Latin word for 'seaweed' and retains that meaning in English. The etymology is obscure. Although some speculate that it is related to Latin , 'be cold', no reason is known to associate seaweed with temperature. A more likely source is , 'binding, entwining'. |
The Ancient Greek word for 'seaweed' was (), which could mean either the seaweed (probably red algae) or a red dye derived from it. The Latinization, , meant primarily the cosmetic rouge. The etymology is uncertain, but a strong candidate has long been some word related to the Biblical (), 'paint' (if not that word i... |
Accordingly, the modern study of marine and freshwater algae is called either phycology or algology, depending on whether the Greek or Latin root is used. The name fucus appears in a number of taxa. |
Classifications |
The committee on the International Code of Botanical Nomenclature has recommended certain suffixes for use in the classification of algae. These are -phyta for division, -phyceae for class, -phycideae for subclass, -ales for order, -inales for suborder, -aceae for family, -oidease for subfamily, a Greek-based name for ... |
Algal characteristics basic to primary classification |
The primary classification of algae is based on certain morphological features. The chief among these are (a) pigment constitution of the cell, (b) chemical nature of stored food materials, (c) kind, number, point of insertion and relative length of the flagella on the motile cell, (d) chemical composition of cell wall... |
History of classification of algae |
Although Carolus Linnaeus (1754) included algae along with lichens in his 25th class Cryptogamia, he did not elaborate further on the classification of algae. |
Jean Pierre Étienne Vaucher (1803) was perhaps the first to propose a system of classification of algae, and he recognized three groups, Conferves, Ulves, and Tremelles. While Johann Heinrich Friedrich Link (1820) classified algae on the basis of the colour of the pigment and structure, William Henry Harvey (1836) prop... |
Schizophyta |
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