About: Corallite     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : dbo:SportsEvent, within Data Space : dbpedia.demo.openlinksw.com associated with source document(s)
QRcode icon
http://dbpedia.demo.openlinksw.com/describe/?url=http%3A%2F%2Fdbpedia.org%2Fresource%2FCorallite&invfp=IFP_OFF&sas=SAME_AS_OFF

A corallite is the skeletal cup, formed by an individual stony coral polyp, in which the polyp sits and into which it can retract. The cup is composed of aragonite, a crystalline form of calcium carbonate, and is secreted by the polyp. Corallites vary in size, but in most colonial corals they are less than 3 mm (0.12 in) in diameter. The inner surface of the corallite is known as the calyx. The vertical blades inside the calyx are known as septa and in some species, these ridges continue outside the corallite wall as costae. Where there is no corallite wall, the blades are known as septocostae. The septa, costae and septocostae may have ornamentation in the form of teeth and may be thick, thin or variable in size. Sometimes there are paliform lobes, in the form of rods or blades, rising fr

AttributesValues
rdf:type
rdfs:label
  • Korallit (de)
  • Coralito (coral) (es)
  • Corallite (en)
  • Corallite (it)
  • Polypiérite (fr)
rdfs:comment
  • Ein Korallit oder Korallenkelch ist der Teil des Skeletts von Steinkorallen (Scleractinia) auf beziehungsweise in dem die Korallenpolypen sitzen. Er wird an der Basis des Polypen durch die Ausscheidung feinster Aragonitkristalle gebildet. Der Korallit gibt in seiner Struktur die Anatomie des Korallenpolypen wieder. Die genaue Feinstruktur der Koralliten ist ein wichtiges Merkmal bei der sehr schwierigen Artbestimmung der Steinkorallen. (de)
  • A corallite is the skeletal cup, formed by an individual stony coral polyp, in which the polyp sits and into which it can retract. The cup is composed of aragonite, a crystalline form of calcium carbonate, and is secreted by the polyp. Corallites vary in size, but in most colonial corals they are less than 3 mm (0.12 in) in diameter. The inner surface of the corallite is known as the calyx. The vertical blades inside the calyx are known as septa and in some species, these ridges continue outside the corallite wall as costae. Where there is no corallite wall, the blades are known as septocostae. The septa, costae and septocostae may have ornamentation in the form of teeth and may be thick, thin or variable in size. Sometimes there are paliform lobes, in the form of rods or blades, rising fr (en)
  • Coralito se denomina el exoesqueleto individual de cada pólipo de coral duro, del orden Scleractinia. También es aplicable al género Millepora, denominado comúnmente "coral de fuego", y al género Heliopora, denominado "coral azul". Todos ellos conforman los corales hermatípicos, principales contribuyentes en la formación de arrecifes. El coralito está compuesto de aragonito, que es una forma cristalina de carbonato de calcio, producido y secretado por el pólipo coralino. (es)
  • La corallite (aussi appelée polypiérite ou polypier) est une cavité de squelette calcaire sécrétée par un polype de corail dur. Ce squelette est composé d'aragonite, forme cristalline du carbonate de calcium. Pour les individus en colonie, l'ensemble des polypiérites est appelé le polypier. * Haut : zoom sur un corallite (polypiérite); Bas : polypier, squelette d'une colonie d'Astrangia * Polypes d'Acropora sortant de leurs corallites tubulaires * Corail vivant présentant des corallites en sillons, contenant les polypes rétractés (fr)
  • Un corallite è l'esoscheletro individuale, generalmente a forma di calice o coppa, dei polipi corallini dell'ordine Scleractinia, che funge da sostegno e all'interno del quale il polipo si può ritrarre. Il corallite è composto di aragonite, che è una forma cristallina di carbonato di calcio, secreto dal polipo stesso. Il termine è talora applicato anche agli octocoralli del genere Heliopora, e agli idrozoi del genere Millepora, impropriamente denominati "coralli di fuoco". (it)
foaf:depiction
  • http://commons.wikimedia.org/wiki/Special:FilePath/Coral_polyp.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Astrangia_danae.jpeg
dcterms:subject
Wikipage page ID
Wikipage revision ID
Link from a Wikipage to another Wikipage
sameAs
dbp:wikiPageUsesTemplate
thumbnail
has abstract
  • Ein Korallit oder Korallenkelch ist der Teil des Skeletts von Steinkorallen (Scleractinia) auf beziehungsweise in dem die Korallenpolypen sitzen. Er wird an der Basis des Polypen durch die Ausscheidung feinster Aragonitkristalle gebildet. Der Korallit gibt in seiner Struktur die Anatomie des Korallenpolypen wieder. Der Kelch besteht aus einer Basalplatte, die von einer Theca genannten ringförmigen Außenwand umgeben ist. Von der Theca aus erstrecken sich sechs, zwölf oder, bei vielen großpolypigen Steinkorallen auch ein Vielfaches von sechs, scharfkantige Kalksepten radiär zur Mitte des Koralliten. Setzen sich die Septen über die Korallitenwand hinaus nach außen fort, werden die außen sitzenden Teile als Costae bezeichnet. Die Anzahl der Kalksepten entsprechen der Anzahl der Mesenterien im Gastralraum der Polypen. Im Zentrum des Koralliten sitzt bei manchen Gattungen eine kleine, Collumella genannte, Kalksäule, an die alle Septen stoßen. Bei solitären Steinkorallen fehlt oft die Außenwand. Der Korallit wächst durch die Kalkproduktion am Fuß des Polypen weiter und wird immer tiefer. Sind Septen und Außenring zu hoch geworden, so wird eine neue Basalplatte, etwas höher als die alte, gebildet. Die alte Basalplatte ist jetzt zu einem Querboden im Korallenskelett geworden, der Dissepiment genannt wird. Lebendes Korallengewebe, das sich unterhalb der neuen Basalplatte befindet, stirbt ab. Bei den Hirnkorallen genannten, massiven Korallenformen entsteht die gewundene, stark gefaltete Form dadurch, dass sich mehrere Polypen einen langgestreckten Koralliten teilen, und sich zwischen den gemeinsamen Außenwänden tiefe Täler befinden. Diese Form wird auch Flabello-meandroid genannt. Die genaue Feinstruktur der Koralliten ist ein wichtiges Merkmal bei der sehr schwierigen Artbestimmung der Steinkorallen. (de)
  • A corallite is the skeletal cup, formed by an individual stony coral polyp, in which the polyp sits and into which it can retract. The cup is composed of aragonite, a crystalline form of calcium carbonate, and is secreted by the polyp. Corallites vary in size, but in most colonial corals they are less than 3 mm (0.12 in) in diameter. The inner surface of the corallite is known as the calyx. The vertical blades inside the calyx are known as septa and in some species, these ridges continue outside the corallite wall as costae. Where there is no corallite wall, the blades are known as septocostae. The septa, costae and septocostae may have ornamentation in the form of teeth and may be thick, thin or variable in size. Sometimes there are paliform lobes, in the form of rods or blades, rising from the inner margins of the septa. These may form a neat circle called the paliform crown. The septa do not usually unite in the centre of the corallite, instead they form a columella, a tangled mass of intertwined septa, or a dome-shaped or pillar-like projection. In the living coral, the lower part of the polyp is in intimate contact with the corallite, and has radial mesenteries between the septa which increase the surface area of the body cavity and aid digestion. The septa, palliform lobes and costae can often be seen through the coenosarc, the layer of living tissue that covers the coenosteum, the part of the skeleton between the corallites. In colonial species, when the corallites each have a surrounding wall, the colony is said to be plocoid. When the walls are tall and tubular, the colony is phaceloid, and when several polyps share a common wall, the colony is cerioid. Sometimes the polyps are in valleys on the surface of solid corals, they are then known as meandroid. Branching corals have two forms of corallites, axial and radial. The axial corallites tend to be shallow and are found near the tips of the branches, while the radial corallites are on the sides of the branches. Corallites can be rounded or polygonal and may be inclined (tilted obliquely to one side). As long as the colony is alive, the polyps and coenosarc deposit further calcium carbonate under the coenosarc, thus deepening the corallites. Each polyp has a fixed adult size and, when it is beginning to get submerged in the corallite, it secretes a new floor (tabula) beneath itself. Over time, a series of floors builds up below the living polyps, resulting in a thickening and lateral expansion of the coral. (en)
  • La corallite (aussi appelée polypiérite ou polypier) est une cavité de squelette calcaire sécrétée par un polype de corail dur. Ce squelette est composé d'aragonite, forme cristalline du carbonate de calcium. Pour les individus en colonie, l'ensemble des polypiérites est appelé le polypier. La taille de la cavité varie selon les espèces mais pour la majorité des coraux coloniaux, elle ne dépasse pas 3 mm de diamètre. La surface intérieure du corallite est connue sous le nom de calice. Les lames verticales, ou septa, forment des crêtes qui peuvent se prolonger chez certaines espèces, hors de la cavité. Les septa, et les crêtes peuvent être de taille et de forme variables. Selon l'espèce, les polypes peuvent par exemple se partager les parois du corallite qui forment alors un sillon. Dans le corail vivant, la partie inférieure du polype, contenant sa cavité gastrique, ne se détache jamais du corallite. Celui-ci présente des mésentères radiaux entre les septa qui augmentent la surface de sa cavité corporelle et lui facilitent la digestion. Le corallite est la loge du polype qui peut s'y rétracter ou s'allonger pour sortir ses tentacules et attraper des proies. Tant que la colonie est vivante, le polype absorbe les ions Ca2+ et HCO3– de l’eau de mer et dépose du carbonate de calcium sous son coenosarc, approfondissant ainsi la loge : chaque polype a une taille adulte fixe et, lorsqu'il commence à être submergé par la paroi de sa loge, il sécrète un nouveau plancher (tabula) sous lui-même. Au fil du temps, les planchers s'accumulent sous les polypes vivants, entraînant un épaississement et une expansion latérale du corail et de son squelette. * Haut : zoom sur un corallite (polypiérite); Bas : polypier, squelette d'une colonie d'Astrangia * Polypes d'Acropora sortant de leurs corallites tubulaires * Corail vivant présentant des corallites en sillons, contenant les polypes rétractés (fr)
  • Coralito se denomina el exoesqueleto individual de cada pólipo de coral duro, del orden Scleractinia. También es aplicable al género Millepora, denominado comúnmente "coral de fuego", y al género Heliopora, denominado "coral azul". Todos ellos conforman los corales hermatípicos, principales contribuyentes en la formación de arrecifes. En el caso de especies coloniales, la estructura esquelética de la colonia, denominada corallum, es el resultado del conjunto de coralitos individuales, dispuestos en diversas estructuras, masivas, ramificadas, laminares, esféricas, monticulares, columnares, foliáceas, incrustantes o en placas. El coralito está compuesto de aragonito, que es una forma cristalina de carbonato de calcio, producido y secretado por el pólipo coralino. (es)
  • Un corallite è l'esoscheletro individuale, generalmente a forma di calice o coppa, dei polipi corallini dell'ordine Scleractinia, che funge da sostegno e all'interno del quale il polipo si può ritrarre. Il corallite è composto di aragonite, che è una forma cristallina di carbonato di calcio, secreto dal polipo stesso. Il termine è talora applicato anche agli octocoralli del genere Heliopora, e agli idrozoi del genere Millepora, impropriamente denominati "coralli di fuoco". La struttura è tipica dei coralli ermatipici, principali contributori alla formazione delle barriere coralline. Nelle specie coloniali, i coralliti si fondono a formare strutture di forma diversa: massicce, ramificate, laminari, sferiche, monticolari, colonnari, foliacee, incrostanti o a placche. Quando i coralliti non sono a stretto contatto fra loro, la colonia è detta plocoide, mentre quando i coralliti sono posti a diretto contatto la colonia è detta cerioide. In una colonia plocoide i corralliti sono tipicamente cilindrici con pareti distinte separate fra loro dal cenosteo. Quando la sua conformazione è allungata, a forma di tubo, la colonia è detta faceloide. Talora i coralliti sono disposti, in serie più o meno allungate, in avvallamenti della superficie della colonia: in tali casi la colonia è detta meandroide, mentre se i coralliti sono disposti a formare delle protuberanze (monticule) la colonia è detta idnoforoide. Nei coralli ramificati, come per esempio quelli del genere Acropora, sono presenti due forme di coralliti, assiali e radiali. I coralliti assiali sono più superficiali e si trovano in prossimità degli apici delle ramificazioni, mentre i coralliti radiali occupano le parti laterali delle ramificazioni. (it)
gold:hypernym
prov:wasDerivedFrom
page length (characters) of wiki page
foaf:isPrimaryTopicOf
is differentFrom of
is Link from a Wikipage to another Wikipage of
Faceted Search & Find service v1.17_git139 as of Feb 29 2024


Alternative Linked Data Documents: ODE     Content Formats:   [cxml] [csv]     RDF   [text] [turtle] [ld+json] [rdf+json] [rdf+xml]     ODATA   [atom+xml] [odata+json]     Microdata   [microdata+json] [html]    About   
This material is Open Knowledge   W3C Semantic Web Technology [RDF Data] Valid XHTML + RDFa
OpenLink Virtuoso version 08.03.3330 as of Mar 19 2024, on Linux (x86_64-generic-linux-glibc212), Single-Server Edition (378 GB total memory, 67 GB memory in use)
Data on this page belongs to its respective rights holders.
Virtuoso Faceted Browser Copyright © 2009-2024 OpenLink Software