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Corallinales
Coralline algae are red algae in the order Corallinales. They are characterized by a thallus that is hard because of calcareous deposits contained within the cell walls. The colors of these algae are most typically pink, or some other shade of red, but some species can be purple, yellow, blue, white, or gray-green. Coralline algae play an important role in the ecology of coral reefs. Sea urchins, parrot fish, and limpets and chitons (both mollusks) feed on coralline algae. In the temperate Mediterranean Sea, coralline algae are the main builders of a typical algal reef, the ''Coralligène'' ("coralligenous"). Many are typically encrusting and rock-like, found in marine waters all over the world. Only one species lives in freshwater. Unattached specimens ( maerl, rhodoliths) may form relatively smooth compact balls to warty or fruticose thalli. A close look at almost any intertidal rocky shore or coral reef will reveal an abundance of pink to pinkish-grey patches, distributed t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hapalidiaceae
Hapalidiaceae is a family of red alga belonging to the order Corallinales Coralline algae are red algae in the order Corallinales. They are characterized by a thallus that is hard because of calcareous deposits contained within the cell walls. The colors of these algae are most typically pink, or some other shade of re .... Subtaxa * Genus '' Aethesolithon'' J.H.Johnson, 1964 * Genus '' Callilithophytum'' P.W.Gabrielson, W.H.Adey, G.P.Johnson & Hernández-Kantún, 2015 * Genus '' Nullipora'' J.B.de Lamarck, 1801, nom. rejic. (currently regarded as a synonym of '' Phymatolithon'') * Genus '' Tectolithon'' Bahia, Jesionek & Amado-Filho, 2020 *Subfamily 1. Austrolithoideae A.S.Harvey & Woelkerling, 1995 :Genera: '' Austrolithon'', '' Boreolithon'', '' Epulo''. *Subfamíly 2. Choreonematoideae Woelkerling, 1987 :Genera: '' Choreonema''. *Subfamíly 3. Melobesioideae Bizzozero, 1885 :Genera: '' Crustaphytum'', '' Epilithon'', '' Exilicrusta'', '' Mastophoropsis'', '' Melob ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sporolithaceae
The Sporolithaceae is the only known family of algae in the Sporolithales order.Kamiya, M., Lindstrom, S.C., Nakayama, T., Yokoyama, A., Lin, S.-M., Guiry, M.D., Gurgel, F.D.G., Huisman, J.M., Kitayama, T., Suzuki, M., Cho, T.O. & Frey, W. (2017). Rhodophyta. In: Syllabus of Plant Families, 13th ed. Part 2/2 Photoautotrophic eukaryotic Algae. (Frey, W. Eds), pp. xii, 171. Stuttgart: Borntraeger Science Publishers. Sporolithaceae was originally placed within the Corallinales order, until the creation of the Sporolithales order in 2017. They are differentiated from the Corallinaceae, by their formation of conceptacles with one or many pores. Species in the Sporolithales (and also the Sporolithaceae), have the characteristics of the Corallinophycidae, but differs from other orders (Corallinales, Rhodogorgonales) in producing tetrasporangia within calcified sporangial compartments and in having tetrasporocytes that undergo cruciate cleavage. The Graticulaceae (fossil family) ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Corallinoideae
The Corallinoideae are a subfamily of coralline algae Coralline algae are red algae in the order Corallinales. They are characterized by a thallus that is hard because of calcareous deposits contained within the cell walls. The colors of these algae are most typically pink, or some other shade of re .... The majority of genera are geniculate, but some have secondarily re-evolved into non-geniculate (crustose) forms. References Diaphoretickes subfamilies Corallinaceae {{red alga-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maerl
Maerl (also rhodolith) is a collective name for non- geniculate coralline red algae with a certain growth habit. Maerl grows at a rate of c. 1 mm per year. It accumulates as unattached particles and forms extensive beds in suitable sublittoral sites.Vize, S.; Blake, C.; Hinojosa, G. and Maggs, C.A. 2003. The distribution and composition of maerl beds in Northern Ireland. ''PMNHS Newsletter'' No.13 p.26 The term maerl originally refers to the branched growth form of Lemoine (1910) and ''rhodolith'' is a sedimentological or genetic term for both the nodular and branched growth forms (Basso et al., 2015). The terms rhodolith and maerl are used in very similar ways. A study in 2023 clarifies that maerl refers to only living, branched coralline thalli, while rhodolith includes unattached coralline red algae, both dead and alive. Description In Europe maerl beds occur throughout the Mediterranean, along most of the Atlantic coast from Portugal to Norway, and in the English Cha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crustose
Crustose is a Habit (biology), habit of some types of algae and lichens in which the organism grows tightly appressed to a substrate, forming a biological layer. ''Crustose'' adheres very closely to the Substrate (biology), substrates at all points. ''Crustose'' is found on Rock (geology), rocks and Bark (botany), tree bark. Some species of marine algae of the Rhodophyta, in particular members of the Order (biology), order Corallinales, Family (biology), family Corallinaceae, subfamily Melobesioideae with cell walls containing calcium carbonate grow to great depths in the intertidal zone, forming crusts on various substrates. The substrate can be rocks throughout the intertidal zone, or, as in the case of the Corallinales, reef-building coral reef, corals, and other living organisms including plants, such as mangroves and animals such as shelled molluscs. The coralline red algae are major members of coral reef communities, cementing the corals together with their crusts. Among the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Red Algae
Red algae, or Rhodophyta (, ; ), make up one of the oldest groups of eukaryotic algae. The Rhodophyta comprises one of the largest Phylum, phyla of algae, containing over 7,000 recognized species within over 900 Genus, genera amidst ongoing taxonomic revisions. The majority of species (6,793) are Florideophyceae, and mostly consist of multicellular, ocean, marine algae, including many notable seaweeds. Red algae are abundant in marine habitats. Approximately 5% of red algae species occur in freshwater environments, with greater concentrations in warmer areas. Except for two coastal cave dwelling species in the asexual class Cyanidiophyceae, no terrestrial species exist, which may be due to an evolutionary bottleneck in which the last common ancestor lost about 25% of its core genes and much of its evolutionary plasticity. Red algae form a distinct group characterized by eukaryotic cells without flagella and centrioles, chloroplasts without external endoplasmic reticulum or unstack ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhodophyta
Red algae, or Rhodophyta (, ; ), make up one of the oldest groups of eukaryotic algae. The Rhodophyta comprises one of the largest phyla of algae, containing over 7,000 recognized species within over 900 genera amidst ongoing taxonomic revisions. The majority of species (6,793) are Florideophyceae, and mostly consist of multicellular, marine algae, including many notable seaweeds. Red algae are abundant in marine habitats. Approximately 5% of red algae species occur in freshwater environments, with greater concentrations in warmer areas. Except for two coastal cave dwelling species in the asexual class Cyanidiophyceae, no terrestrial species exist, which may be due to an evolutionary bottleneck in which the last common ancestor lost about 25% of its core genes and much of its evolutionary plasticity. Red algae form a distinct group characterized by eukaryotic cells without flagella and centrioles, chloroplasts without external endoplasmic reticulum or unstacked (stroma) thylako ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Choreonematoideae
The Choreonematoideae are a monogeneric nongeniculate subfamily of Coralline algae Coralline algae are red algae in the order Corallinales. They are characterized by a thallus that is hard because of calcareous deposits contained within the cell walls. The colors of these algae are most typically pink, or some other shade of re .... References Diaphoretickes subfamilies Monotypic eukaryote taxa Corallinales {{red alga-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solenoporaceae
The extinct Solenoporaceae have traditionally been interpreted as a group of red algae ancestral to the Corallinales. The genus from which they take their name, ''Solenopora'', originates in the Ordovician. Unlike the Corallinaceae The Corallinaceae are one of the two extant Coralline families of red algae; they are differentiated from the morphologically similar Sporolithaceae by their formation of grouped sporangial chambers, clustered into sori. The Corallinoideae ..., this family has large vegetative cells and an undifferentiated thallus. Additionally there are external, non-calcified sporangia. The differences in structure suggest that the holotype is not an alga at all, but rather is a chaetetid sponge. Post-Palaeozoic specimens therefore require re-classification. However, some algal taxa are still classified within the genus. Some specimens of algal ''Solenopora'' retain an original pink colouration, which is banded with growth stages of the fossil; this is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Melobesioideae
The Melobesioideae are a subfamily of Corallinacean Coralline algae with multiporate conceptacle Conceptacles are specialized cavities of marine and freshwater algae that contain the reproductive organs. They are situated in the receptacle and open by a small ostiole.Boney, A.D. (1969). ''A Biology of Marine Algae''. Hutchinson Educational ...s. References Diaphoretickes subfamilies Corallinales {{rhodophyta-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Austrolithoideae
The Austrolithoideae are a subfamily of coralline algae Coralline algae are red algae in the order Corallinales. They are characterized by a thallus that is hard because of calcareous deposits contained within the cell walls. The colors of these algae are most typically pink, or some other shade of re .... References Corallinaceae {{rhodophyta-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
