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Phycology (from Ancient Greek φῦκος (phûkos) 'seaweed' and -λογία 'study of') is the scientific study of algae. Also known as algology, phycology is a branch of life science. Algae are important as primary producers in aquatic ecosystems. Most algae are eukaryotic, photosynthetic organisms
A type of algae, Ancylonema nordenskioeldii, was found in Greenland in areas known as the 'Dark Zone', which caused an increase in the rate of melting ice sheet. [89] The same algae was found in the Italian Alps, after pink ice appeared on parts of the Presena glacier. [90] The various sorts of algae play significant roles in aquatic ecology.
Mougeotia is a genus of filamentous charophyte green algae of the order Zygnematales. It is a common component of freshwater aquatic habitats around the world. [ 2 ] Described in 1824 by Carl Adolph Agardh , [ 1 ] its name honors the French botanist Jean-Baptiste Mougeot .
The haptophytes were first placed in the class Chrysophyceae (golden algae), but ultrastructural data have provided evidence to classify them separately. [13] Both molecular and morphological evidence supports their division into five orders; coccolithophores make up the Isochrysidales and Coccolithales.
Charophyta (UK: / k ə ˈ r ɒ f ɪ t ə, ˌ k ær ə ˈ f aɪ t ə /) is a group of freshwater green algae, called charophytes (/ ˈ k ær ə ˌ f aɪ t s /), sometimes treated as a division, [2] yet also as a superdivision [3] or an unranked clade.
The cryptophyceae are a class of algae, [1] most of which have plastids. About 230 species are known, [2] and they are common in freshwater, and also occur in marine and brackish habitats. Each cell is around 10–50 μm in size and flattened in shape, with an anterior groove or pocket.
Periphyton is a complex mixture of algae, cyanobacteria, heterotrophic microbes, and detritus that is attached to submerged surfaces in most aquatic ecosystems. The related term Aufwuchs ( German "surface growth" or "overgrowth", pronounced [ˈaʊ̯fˌvuːks] ⓘ ) refers to the collection of small animals and plants that adhere to open ...
Originally, biologists classified cyanobacteria as an algae, and referred to it as "blue-green algae". The more recent view is that cyanobacteria are bacteria, and hence are not even in the same Kingdom as algae. Most authorities exclude all prokaryotes, and hence cyanobacteria from the definition of algae. [87] [88]