Its scientific name, posidonia, is a reference to Poseidon, Greek God of the Sea. Quick facts. The genus Posidonia is named after Poseidon, the Greek god of the seas, while oceanica refers to its former wide distribution. In spite of what the name may suggest, it is an endemic plant of the Mediterranean Sea, that is, it is present exclusively in this territory. Zostera oceanica L. Homonyms Posidonia oceanica Delile The Plants Database includes the following 1 species of Posidonia . Accumulation of Posidonia on the beach, Archipelago of La Maddalena National Park (SS). Scientists studying Posidonia oceanica meadows in the Mediterranean Sea estimate that the largest clone, which stretches more than nine miles, has … What follows is an explanation of the Posidonia oceanica, its ecosystem, and its impact on related … The species name oceanica appears to refer to the wide distribution of this plant that is now only found in the Mediterranean Sea. The leaf terminus is rounded or sometimes absent because of damage. Description: Grass green to blue-green, 10-400 mm wide.Velvety surface firm to touch, solid and spherical when young; maturing to form undulating, converging growths. However, residues of seagrass Posidonia oceanica beached in tourist zones represent often a problem in the Mediterranean. The APG system (1998) and APG II system (2003) accept the genus as constituting the sole genus in the family Posidoniaceae, which it places in the order Alismatales, in the clade monocots. [4], In 2006 a huge clonal colony of P. oceanica was discovered south of the island of Ibiza and stretches as far south as La Savina and Es Pujols on the island of Formentera. Posidonia spheroids Distribution of the genus Posidonia . Zostera oceanica L. Higher Taxa: Taxonomy Browser Concept: Andean Bryophytes Bolivia Checklist Catalogue of New World Grasses Ecuador Catalogue Flora Mesoamericana Madagascar Catalogue Manual de Plantas de Costa Rica Moss Flora of China Peru Checklist System details P. oceanica is endemic to the Mediterranean Sea, whereas C. nodosa is also present in the northeastern Atlantic Ocean. Posidonia oceanica, commonly known as Seagrass, is an angiosperm plant, adapted to underwater life.It is a key element to preserve the Mediterranean ecosystems. oceanica. Although shoot patchiness has long been studied in Posidonia oceanica meadows, small scale spatial structure of P. oceanica meadows is poorly known, as very few studies focused on this feature. P. oceanica can form large underwater meadows and is being used as a bioindicator. Posidonia oceanica meadows are marine habitats in which Posidonia oceanica lives, a marine plant (seagrass) belonging to the Posidoniaceae family. Posidonia oceanica (L.) Delile Images from the web. Codium bursa (Olivi) C.Agardh. [10], To date 51 natural products have been reported from P. oceanica, including natural phenols, phenylmethane derivatives, phenylethane derivatives, phenylpropane derivatives and their esters, chalkones, flavonols, 5-alpha-cholestanes, and cholest-5-enes. The fruit is free floating and known in Italy as "the olive of the sea" (l'oliva di mare[2]). In light of these characteristics, we are talking about a plant and not about an alga, contrary to what common people believe! Common Name(s): Accepted Name(s): Posidonia oceanica (L.) Delile : Taxonomic Status: Current Standing: not accepted - database artifact : Data Quality Indicators: Record Credibility Rating: verified - … Posidonia ostenfeldii den Hartog; Posidonia robertsoniae Kuo and Cambridge; Posidonia sinuosa Cambridge and Kuo; The species described by Linnaeus, Posidonia oceanica, is found in the Mediterranean; the rest are located around the southern coast of Australia. Balls of fibrous material from its foliage, known as egagropili, wash up to nearby shorelines. It is sometimes referred to as fibreball weed. From the scientific point of view it belongs to the so-called marine phanerogams, also called spermatophytes (or plants bearing seeds), that is plants that have a differentiation in roots, stems and leaves, as well as having flowers and fruits. If possible, verify the text with references provided in the foreign-language article. At 8 kilometres (5.0 mi) across, and estimated at around 100,000 years old,[5] it may be one of the largest and oldest clonal colonies on Earth. [citation needed] Average leaf width is around 10 millimetres (0.39 in). Répartition du genre Posidonia Méditerranée & Sud Australie. Guala I, Nikolic V, Ivesa L, Di Carlo G, Rajkovic Z, Rodic P, Jelic K (2014): Monitoring Programme for Posidonia Beds (Posidonion oceanicae), MedMPAnet Project 1 MONITORING PROGRAMME FOR POSIDONIA OCEANICA BEDS Common chapters ENGLISH NAME (NATURA CODE) *1120 Posidonia oceanica beds (priority habitat type) Equivalents in different classifications Taenidium oceanicum (L.) Targ.Tozz. Posidonia oceanica (L.) Delile and Cymodocea nodosa (Ucria) Asch. Kernera oceanica (L.) Willd. Its uses, since ancient times, are part of our immaterial heritage. Posidonia australis is a species of seagrass that occurs in the southern waters of Australia. On hard or soft substrate, these beds constitute one of the main climax communities. Posidonia beds (Posidonion oceanicae) Beds of [Posidonia oceanica] (Linnaeus) Delile characteristic of the infralittoral zone of the Mediterranean (depth: ranging from a few dozen centimetres to 30 - 40 metres). From the scientific point of view it belongs to the so-called marine phanerogams, also called spermatophytes (or plants bearing seeds), that is plants that have a differentiation in roots, stems and leaves, as well as having flowers and fruits. Posidonia oceanica Name Synonyms Aegle fragilis Dulac Alga oceanica (L.) Kuntze Caulinia oceanica (L.) DC. Posidonia oceanica Mediterranean tapeweed Legal Status. Scientific Name Other Common Names; POOC3: Posidonia oceania (L.) Delile, database artifact: Mediterranean tapeweed In the Mediterranean Sea, the seagrass Posidonia oceanica plays a key ecological role, and is protected by a range of legislation. Carl Linnaeus gave the first botanical description of this species in Systema Naturae, although the genus was then named Zostera. of. The marine plant forms large meadows that are considered to be of high importance to the environmental conservation of the region. This arrangement of the rhizomes eventually forms a mat; the surface contains the active parts of the plant, whereas the center is a dense network of roots and decomposing stems. oceanica. On the basis of one selected species, Posidonia oceanica POMI: Meadow cover Seagrass cover (as percentage) is estimated GIG Mediterranean GIG visually for each sub-quadrat in the following classes: 0, 10, 25, 50, 75 and 100 %., indepen- dently by two divers. The rhizome type stems are found in two forms: one growing up to 150 centimetres (59 in) beneath the sand and the other rising above the sand. To find out more about the cookies we use and how to delete them, see our privacy policy. [citation needed] The leaves are bright green, perhaps turning brown with age, and have 13 to 17 parallel veins. Posidonia oceanica Recognized by Flickr BHL , iNaturalist , Flickr Group , One Species at a Time Podcasts , National Wetland Plant List USA , Biopix Nature Photos , The European Vegetation Archive (EVA) , FAO Fishery Statistics , and ecology literature The leaves are ribbon-like, appearing in tufts of 6 or 7, and up to 1.5 metres (4.9 ft) long. All stems are approximately 10 millimetres (0.39 in) thick and upright in habit. Posidonia oceanica is a plant adapted to underwater life and a key element to preserve the Mediterranean ecosystems. In the annex I the posidonia is represented as a priority habitat for conservation and of community interest: “Habitat 1120” (Posidonia oceanica meadows). Cookies used for the essential operation of this site have already been set. Among their many functions, Posidonia oceanica meadows play a part in stabilizing seabeds, breaking swells and waves, and encouraging the deposit of sedimentary particles (Boudouresque et al., 2006). Illustrazione dell'ecosistema di Posidonia oceanica Range of Posidonia genus Range of Posidonia oceanica. Posidonia oceanica (Flowers and seeds) Aegagropile . Posidonia oceanica is a flowering plant which lives in dense meadows or along channels in the sands of the Mediterranean. Posidonia oceanica is a key species of the coastal marine ecosystem, reaching an area around 3% of the entire Mediterranean (corresponding to an area of about 38,000 km2). Posidonia oceanica, commonly known as Neptune grass or Mediterranean tapeweed, is a seagrass species that is endemic to the Mediterranean Sea. Leaves are arranged in groups, with older leaves on the outside, longer and differing in form from the younger leaves they surround. Pergent, G., Semroud, R., Djellouli, A., Langar, H. & Duarte, C. 2010. This seagrass generally lives between 1 and 30 meters deep, where it colonizes the sandy or detrital bottoms to which it adheres by means of the rhizomes (modifications of the stem with reserve function) and on which it forms vast grasslands, the Posidonia meadows, which have a high density (over 700 plants per m2). It has had, nonetheless, many name, before the establishment of a systematic nomenclature by Linneo in the 18 th century. Posidonia leaves, which can be over 2 meters high and up to 20 meters wide, also form compact and resistant structures along shores that provide a very effective protection against erosion. Subsurface rhizomes and roots stabilize the plant while erect rhizomes and leaves reduce silt accumulation. It is found at depths from 1–35 metres (3.3–114.8 ft),[citation needed] according to water clarity. This corresponds to a surface area of about 38,000 square kilometres (15,000 sq mi). In light of these characteristics, This seagrass generally lives between 1 and 30 meters deep, where it colonizes the sandy or detrital bottoms to which it adheres by means of the rhizomes (modifications of the stem with reserve function) and on which it forms vast grasslands, the, The fallen leaves of the plant accumulate in the same prairie, but the winter wave carries them and accumulates them along the beaches, causing the known accumulations called ". Posidonia oceanica is a flowering plant which lives in dense meadows or along channels in the sands of the Mediterranean. Its flowers indicate that this plant was once a land plant that adapted to living under the sea as, under the sea, flowers do not need to … are the most common species found in the Mediterranean Sea. [11], Media related to Posidonia oceanica at Wikimedia Commons. [3] Earlier systems classified this genus in the family Potamogetonaceae or in the family Posidoniaceae but belonging to order Zosterales. The posidonia oceanica is linked to Mediterranean culture. Photo M. Miozzo. [9] The presence of Posidonia can be detected by the masses of decomposing leaves on beaches. Posidonia grows best in clean waters, and its presence is a marker for lack of pollution. In spite of what the name may suggest, it is an endemic plant of the Mediterranean Sea, that is, it is present exclusively in this territory. It is found at depths from 1–35 metres (3.3–114.8 ft), according to water clarity. Posidonia oceanica is a higher plant species and it differs from algae in that it has leaves, stalks and roots as well as flowers and fruit. The fallen leaves of the plant accumulate in the same prairie, but the winter wave carries them and accumulates them along the beaches, causing the known accumulations called "banquettes". Subsurface rhizomes and roots stabilize the plant while erect rhizomes and leaves reduce silt accumulation. The Angiosperm Phylogeny Website concludes that the three families Cymodoceaceae, Posidoniaceae and Ruppiaceae form a monophyletic group. It forms large underwater meadows that are an important part of the ecosystem. Posidonia. The genus name Posidonia is after Poseidon, the Greek god of the seas. Posidonia's experience started with Mr. Enrico Ardito, Mr. Giuseppe Ardito, Mr. Cesare Livraghi before the second world war, under the name of 'Neptunia'. Do not translate text that appears unreliable or low-quality. Also known as Green Sponge Ball or Ball Alga (English) or Basque Beret (French).. Balls of decomposing detritus from the foliage of the plant are found along nearby shore-lines. Threat status Europe: Not Evaluated ... Common names and synonyms. This page was last edited on 27 August 2020, at 04:07. Posidonia oceanica (L.) Delile is an endemic Mediterranean sea-grass distributed in the infralittoral zones, where it forms meadows playing a recognized ecological role in the coastal marine habitat. Such plant material has been used for composting, but Italian laws prohibit the use of marine algae and plants for this purpose. Posidonia Mooring and towing marine equipment, proving house for anchors and chains. Click below on a thumbnail map or name for species profiles. The Habitats Directive of the European Union (92/43 EEC of 21/05/1992), and the adaptation with the Directive 97/62/EC of 27 October 1997. [citation needed], The flowering plant's common name is Neptune grass. Common Name(s): Mediterranean tapeweed [English] Taxonomic Status: Current Standing: accepted Data Quality Indicators: Record Credibility Rating: verified - standards met català: Posidònia corsu: Arba marina Deutsch: Neptungras English: Neptune Grass español: Alga de vidrieros français: Posidonie de Méditerranée magyar: Neptunfű Nederlands: Neptunusgras Wetland Status. Although its use as a traditional herbal remedy is poorly documented, recent literature reports interesting pharmacological activities as antidiabetic, antioxidant and vasoprotective. These clusters of vegetable residues, unjustly detested by swimmers, on the contrary perform a positive function as they attenuate the force of the wave motion and hinder the mechanisms of coastal erosion, thus protecting the sandy coasts. We use cookies to improve our website and your experience when using it. Native Introduced Native and Introduced. Learn how and when to remove this template message, "Portuguese scientists discover world's oldest living organism", "Implications of Extreme Life Span in Clonal Organisms: Millenary Clones in Meadows of the Threatened Seagrass Posidonia oceanica", http://www.tirsavplus.eu/documenti/normativa/D_lgs_75_2010%20normativa_fertilizzanti.pdf, https://en.wikipedia.org/w/index.php?title=Posidonia_oceanica&oldid=975171594, Articles needing translation from Italian Wikipedia, Articles needing additional references from August 2019, All articles needing additional references, Articles with unsourced statements from August 2019, Creative Commons Attribution-ShareAlike License. Drifting vegetation of Posidonia forming banquettes along the beaches is a common feature of many coasts. Posidonia caulini K.D.Koenig Posidonia oceania (L.) Delile Taenidium acuminatum Targ.Tozz. Many of the compounds reported for P. oceanica were, however, not detected by appropriate phytochemical methods and some most probably represent artifacts and are not genuine natural products of P. Posidonia oceanica is common plant in the White Mediterranean Sea the phenolic compounds as biotic and abiotic resistant agents kill Staphylococcus aureus, Salmonella typhi, Pseudomonas aeruginosa, Proteus mirabilis, Klebsiella 2.1 Posidonia oceanica at 60 ºC for 48 hours. Posidonia oceanica meadows are marine habitats in which Posidonia oceanica lives, a marine plant (seagrass) belonging to the Posidoniaceae family. This study experimentally determined the impact of food source type on turnover rate and trophic enrichment factors (TEFs or ∆) of δ 13 C and δ 15 N, as well as on respiration rate, in captive populations of the marine amphipod Gammarus aequicauda. [6][7][8], This species is found only in the Mediterranean Sea where it is in decline, occupying an area of about 3% of the basin.

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